WO2007118369A1 - A short-flow system and method for producing cement with metallurgy slag - Google Patents

Abstract

A short-flow system for producing cement with metallurgy slag comprises a slag granulation device located at one side of railway for slag car and a railway for slag chute car at the other side, wherein a slag chute is mounted on the slag chute car, and inlet and outlet of the chute are connected with slag outlet of steel-making furnace and chute of slag granulation device respectively; a pool located at outlet of the slag granulation device, a device for lifting and dewatering the granulated slag located in the pool, and the granulated slag conveyor mounted at outlet of the device, wherein outlet of the conveyor is disposed above inlet of primary magnetic separator, slag tails outlet of the primary magnetic separator is connected with inlet of coarse grinding machine via slag tails conveyor, outlet of coarse grinding machine is connected with inlet of secondary magnetic separator, the fine powder slag outlet and slag tails outlet of the secondary magnetic separator are connected with fine powder slag conveyor and inlet of ultra-fine grinding machine respectively, and outlet of ultra-fine grinding machine is connected with cement conveyor.

Description

 Metallurgical slag production cement short process system and method

 Technical field

 The invention relates to a metallurgical slag production cement short process system and method, which can perform ultrafine powder treatment on steel slag or non-ferrous metal slag to separate metal particles from non-metal particles. The system has short process, no explosion, safety and environmental protection. It can realize the real online direct treatment of metallurgical slag and is processed into fine cement by magnetic separation or jigging, and the metallurgical slag treatment rate reaches 100%.

 Background technique

 In the metallurgical industry of the world, about 130kg of steel slag, 300kg of iron powder slag and other wastes are emitted for every ton of crude steel produced. The annual discharge of steel slag in the world is about 1-1.500 million tons. China has accumulated more than 100 million tons of steel slag, steel slag containing about 10% of steel, that is, 10 million tons of steel is precipitated in the waste slag, and the annual slag discharge is increasing by nearly 10 million tons. The utilization rate of steel slag is low. It is 10%. The traditional steel slag treatment process is hot or hot suffocation method (Baosteel, Shougang and Angang, this method), that is, the liquid steel slag is poured into the slag slag tank, water is cooled and then transported to the slag mountain twice, crushed and then sorted. The shortcomings are long process, high cost, occupation of land, pollution of the environment, waste of resources, and affecting the sustainable development of the steel industry. Therefore, it is necessary to study the reduction, resource utilization and high-value comprehensive utilization of steel slag.

Steel slag is the slag discharged during the steel making process. The steel slag is mainly an oxide formed by oxidation of various elements in the metal charge, an eroded lining material and a furnace material, impurities introduced by the metal charge, and limestone, dolomite, iron ore specially added for adjusting the properties of the steel slag. Slag-forming materials such as silica. Some iron particles are entrained in the steel slag, and the hardness is large. The main chemical composition (mass fraction/%) of the steel slag is: Ca0, S i0 ₂ , KO, , Fe ₂ 0 _:i , Mg0, P ₂ 0 ₅ , fCaO; Containing V ₂ 0 _:i , Ti0 _{2 ,} etc., the composition has a wide range of fluctuations. Steel slag is characterized by the presence of Fe oxide in the form of FeO and Fe ₂ 0 _:i ; and FeO-based, the total amount is below 25%.

 The steel slag contains dicalcium silicate (C2S) and tricalcium silicate (C3S) similar to Portland cement clinker. The mass fraction of the high alkalinity converter steel slag is above 50%, medium and low alkalinity. The mass fraction of the steel slag is below 50%, and the medium and low alkalinity steel slag is mainly dicalcium silicate (C2S). The steel slag is formed at a temperature above 1560 ,, and the Portland cement clinker has a firing temperature of about 1400 。. The steel slag has a high formation temperature, a dense crystal, a large crystal grain, and a slow hydration speed. Therefore, the steel slag can be referred to as over-fired Portland cement clinker.

 It can be seen that steel slag is not only a waste, but also a very good cement raw material, especially using its low hydration heat and micro-expansion characteristics to produce a concrete material suitable for waterproofing and anti-leakage concrete, such as damming and The large amount of underground concrete works can completely achieve the "zero" emission of steel slag.

There are many kinds of metallurgical slag treatment methods in the prior art, and FIG. 1 shows a schematic diagram of the steel slag transportation arrangement in the prior art. In the figure, the left side of the steel furnace 1 is a ladle 2, and the right side of the steel furnace It is a slag tank 3, and the ladle and the slag tank are reciprocated along a linear track 4, respectively. The usual practice is to first introduce slag into the slag. The tank, the slag tank is driven away from the steel furnace, and the slag tank is transported to the granulating device by a lifting device for granulation treatment. Chinese Patent No. 02135756 discloses a tilting steel slag water quenching treatment method, which is provided with a water quenching tank, a column is installed at the edge of the water quenching tank, and a granulator is installed on one side of the column body, and when the molten steel slag is poured into the slag tank car After being placed in the slag tank, the slag tank is tilted by the hook of the hoist and the lifting lug on the slag tank, and the tilting guide arm on the slag tank falls on the cylinder when rotated to a certain angle. The slag tank is rotated slowly around the rotating shaft of the cylinder to tilt the steel slag into the water quenching tank. At the same time, the pressurized water of the granulator has been sprayed to form a water curtain, so that the steel slag enters the water curtain and then granulates, and then enters the water quenching tank. The steel slag after water quenching can be placed in the slag yard. The method of the patent belongs to the offline processing method, the process of the method is long, and only the steel slag is processed into granulated slag, and the "zero" emission of the steel slag is not completed. Therefore, it is necessary to propose a metallurgical slag production cement short flow system and method. .

 Summary of the invention

 SUMMARY OF THE INVENTION It is an object of the present invention to provide a metallurgical slag production cement short flow system and method which can perform ultrafine powder treatment of steel slag or non-ferrous slag to separate metal particles from non-metallic particles. The system has short process, no explosion, safety and environmental protection. It can realize on-line direct treatment of metallurgical slag. After magnetic separation or jigging, it can be processed into ultra-fine grinding into cement to achieve 100% metallurgical slag treatment rate.

 The object of the present invention is achieved by the following technical solutions: a metallurgical slag cement short-flow production system, including a pre-furnace slag tanker traveling track, a slag granulating device disposed on a slag tanker traveling track side, and a slag tanker traveling track One side is provided with a slag aqueduct traveling track, one end of the slag aqueduct traveling track meets with the slag tank traveling track, and the slag aqueduct is mounted with a steering slag aqueduct, and the inlet end of the slag aqueduct can be The steel furnace slag outlet is docked, and the outlet end of the slag aqueduct can be docked with the chute of the slag granulation device; the granulation outlet of the slag granulation device is provided with a sump, and the sump is provided with granulation a slag lifting and dewatering device, wherein the discharge end of the lifting and dewatering device is provided with a granulated slag conveyor, and a discharge end of the granulated slag conveyor is disposed above the inlet of the first-stage magnetic separator, and the particle steel output port of the magnetic separator The particle steel steel conveyor is connected with the steel material collecting bin, and the tailings output port of the magnetic separator is connected with the inlet end of the coarse grinding machine through the tail slag conveyor, the discharge port of the coarse grinding machine and the inlet port of the secondary magnetic separator connection The slag fine powder outlet of the secondary magnetic separator is connected with the fine powder conveyor, the tail slag outlet of the secondary magnetic separator is connected with the inlet of the ultrafine mill, the steel slag cement outlet of the ultrafine mill and the cement conveyor connection.

The object of the present invention can also be achieved by another technical solution: a metallurgical slag cement short-flow production system, including a pre-furnace slag tanker traveling track, and a slag granulation device disposed on a side of the slag tanker traveling track, the slag granulation device a slag tank tipping device is disposed at the device, and an inlet end of the slag granulating device is docked with a slag tapping port of the slag slag tank; a sump is provided at a granulation outlet of the slag granulating device, the set A granulated slag lifting and dewatering device is arranged in the pool, and a granulated slag conveyor is arranged at the discharge end of the lifting and dewatering device, and a discharge end of the granulated slag conveyor is arranged above the inlet of the primary magnetic separator, the magnetic separator Particle steel outlet through particles The steel conveyor is connected with the steel material collecting bin, and the tailings output port of the magnetic separator is connected with the inlet end of the coarse grinding machine through the tailings conveyor, and the discharging port of the coarse grinding machine is connected with the inlet port of the secondary magnetic separator. The slag fine powder outlet of the secondary magnetic separator is connected with the fine powder conveyor, the tail slag outlet of the secondary magnetic separator is connected with the inlet of the ultrafine mill, the steel slag cement outlet of the ultrafine mill and the cement conveyor connection.

 A metallurgical slag cement short-flow production method, the steps of which are:

 Sending a slag aqueduct to the steel furnace dumping position, the inlet end of the slag aqueduct is docked with the steel furnace slag outlet, and the outlet end of the slag aqueduct is docked with the chute of the slag granulation device;

 The steel furnace tipping device is started to pour the steel slag into the slag aqueduct and is input into a metallurgical granulating device through the aqueduct, and processed by the granulating device to form granulated slag;

 The granulated slag lifting and dewatering device and the conveyor belt device are used to transport the granulated slag to a drying chamber, and the waste heat of the steelmaking converter is used for continuous drying, and the drying temperature is 200-30 (TC, the drying time is 0. 5-1 minutes;

 The conveyor belt device transports the dried granulated slag to a primary magnetic separator for magnetic separation processing, and the magnetically selected particle steel is transported to the collection bin, and the tail slag of the first-order magnetic separator is conveyed and coarsely ground. The grinding process is carried out in the machine, and the coarsely pulverized tail slag is sent to the secondary magnetic separator, the secondary magnetic separation slag fine powder is sent to the collection bin, and the secondary magnetic slag discharged tail slag enters the ultrafine mill for grinding treatment. Excipients are added to the grinding process to produce steel slag cement.

 Compared with the prior art, the invention has the following advantages:

 1. The invention can greatly shorten the slag treatment process, and can directly convert the metallurgical slag from a molten state into a cement.

 2. The invention adopts two-stage magnetic separation or jigging separation, which can improve the recovery rate of metal.

 3. Since the invention uses the residual heat of the steelmaking converter to dry the slag particles, energy can be saved.

4. The invention can realize the on-line direct treatment of the metallurgical slag and is processed into cement by ultra-fine grinding after screening and separation.

 5. The treatment rate of the metallurgical slag reaches 100%, and the metallurgical slag has zero discharge, and the whole process has no secondary pollution, which is beneficial to environmental protection.

 6. The invention can utilize the smelter sewage to carry out slag treatment, save water resources and smelt sewage. DRAWINGS

 The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

 Figure 1. Schematic diagram of steel slag transportation arrangement in the prior art

 Figure 2. Schematic diagram of the system of the present invention

Figure 3 is a schematic view of the steel slag treatment arrangement of the present invention (top view) Figure 4 is a schematic view showing the structure of the steel slag processing apparatus of the present invention (cross-sectional view taken along line A-A of Figure 3). Figure 5 is a second embodiment of the steel slag processing apparatus of the present invention.

 Figure 6. Embodiment 3 of the steel slag processing apparatus of the present invention

 Figure 7 is a structural view of a third steel slag processing apparatus according to an embodiment of the present invention (B-B sectional view of Fig. 6). Fig. 8. Embodiment 4 of the steel slag processing apparatus of the present invention

 Figure 9. Embodiment 5 of the steel slag processing apparatus of the present invention

 Figure 10 is a sixth embodiment of the steel slag processing apparatus of the present invention

 Figure 11. Schematic diagram of the eighth embodiment of the present invention

 detailed description

 Embodiment 1 - Referring to FIG. 2, FIG. 3, FIG. 4, a metallurgical slag cement short-flow production system, including a steel furnace 1 (the steel furnace can be a converter or a non-ferrous metal melting furnace), a pre-slag slag tanker traveling track 4 a slag granulating device 40 is disposed on a side of the slag tanker traveling rail, and a slag aqueduct traveling rail 102 is disposed on the other side of the slag tanker traveling rail, and one end of the slag aqueduct traveling track meets with the slag tank traveling track, A slag slag aqueduct 101 is installed on the slag aqueduct vehicle 10. In this embodiment, a slag granulation device is disposed on the left side, and a slag aqueduct vehicle is disposed on the right side. The steering slag aqueduct is a 90 ° steering aqueduct. The traveling track of the slag aqueduct vehicle and the walking track of the slag tanker are arranged orthogonally. The inlet end of the slag aqueduct can be docked with the slag outlet of the steel furnace 1 (since the conventional structure, the slag opening is not shown), the outlet end of the slag aqueduct and the chute 30 of the slag granulation device The slag granulation device is provided with a gas collecting device 50. The granulation outlet of the slag granulating device is provided with a sump 70, and the sump is provided with a granulated slag lifting and dewatering device 60. Form a steel slag treatment device. The discharge end of the lifting and dewatering device is provided with a granulated slag conveyor 80. The discharge end of the granulated slag conveyor is disposed above the inlet of the primary magnetic separator 90, and the granulated slag conveyor can pass through a continuous Drying chamber 801, on-line drying of granulated slag, the particle steel output port of the magnetic separator is connected with the steel material collecting bin 100 through a particle steel conveyor, and the tailings output port of the magnetic separator passes through the tail slag conveyor Connected to the inlet end of the coarse grinding machine 110, the discharge port of the coarse grinding machine is connected with the inlet of the secondary magnetic separator 120, and the slag fine powder outlet of the secondary magnetic separator is connected with the fine powder conveyor 130, the secondary magnetic separation The tail slag outlet of the machine is connected to the inlet of the ultrafine mill 140, and the steel slag cement outlet of the ultrafine mill is connected with the cement conveyor 150 to send the steel slag cement into the warehouse.

In this embodiment, the steering slag aqueduct is a mobile steel slag chute. In order to transport the steel slag into the granulation device on the side of the steel furnace, the chute adopts a curved flow passage design, that is, a chute outlet and The inlet is not in a straight line, but is deflected by a certain angle. In this embodiment, the steering slag aqueduct is a 90 ° steering aqueduct; in another embodiment, the steering slag aqueduct may be a A 30° to 60° steering aqueduct (not shown).

 In this embodiment, the lifting and dewatering device may adopt a conventional bucket elevator, which adopts a grid structure for dehydration of the granulated slag, which is not further described as a conventional device. The primary magnetic separator and the secondary magnetic separator can adopt conventional equipment, such as the roller magnetic separator involved in Chinese Patent No. 200320110040. 9, and can also use the integrated magnetic paper of Chinese Patent 200420084518. Machine selection. The coarse grinding machine and the ultra-fine grinding machine can use a conventional grinding machine for cement production, for example, the Portland cement mill involved in Chinese Patent No. 200410077444. 1, and other structures of the grinding machine can also be used. Conventional equipment is not further described.

 In the present embodiment, the original slag tanker is used to transport non-granulated waste slag or to transport steel furnace slag when the granulation apparatus is overhauled. When the slag tanker is activated, the slag aqueduct is parked on the right side of the slag tanker's travel track. The production process of this embodiment can employ the process described in the eighth embodiment.

 Embodiment 2:

 Referring to FIG. 5, the embodiment is an improvement based on the first embodiment. In the embodiment, the steering slag aqueduct is a 90° steering aqueduct, the slag aqueduct traveling track and the slag tanker The walking track is skewed. That is, the walking track of the slag aqueduct vehicle and the walking track of the slag tanker are inclined at an angle of 30 ° ~ 60 °. The advantage of the skew setting is to reduce the area of use of the device.

 Embodiment 3:

Referring to Figures 6 and 7, this embodiment is an improvement on the basis of the first embodiment. In the production system of the embodiment, including a steel furnace 1, a pre-slag slag tanker traveling rail 4, a slag granulation device 40 is disposed on a side of the slag tanker traveling rail, and a slag aqueduct vehicle is disposed on the other side of the slag tanker traveling rail. The track 102, one end of the slag aqueduct traveling track meets with the slag tank travel track, and the slag aqueduct 10 is provided with a steering slag aqueduct 101. In this embodiment, a slag granulation device is disposed on the left side, right The slag aqueduct is disposed on the side, and the steering slag aqueduct is a 90° steering aqueduct, and the slag aqueduct traveling track and the slag tanker traveling track are orthogonally disposed. A slag buffer tank 20 is disposed at the slag granulation chute 30, and the slag buffer tank is mounted on a tilting device 201, and the outlet end of the slag aqueduct and the slag of the slag buffer tank The entrance end is docked. The inlet end of the slag aqueduct can be docked with the slag outlet of the steel furnace 1, and the slag outlet of the slag buffer tank is docked with the chute 30 of the slag granulation device; the granulation outlet of the slag granulation device There is a sump 70 in which a granulated slag lifting and dewatering device 60 is disposed, and the above equipment constitutes a steel slag treatment device. The discharge end of the lifting and dewatering device is provided with a granulated slag conveyor 80 (hereinafter, see FIG. 2). The discharge end of the granulated slag conveyor is disposed above the inlet of the primary magnetic separator 90, the magnetic separator The particle steel output port is connected to the steel material collection bin 100 through a particle steel conveyor, and the tailings output port of the magnetic separator is connected to the inlet end of the coarse grinding machine 110 through the tail slag conveyor, the outlet of the coarse grinding machine and the second Stage magnetic separator 120 The inlet port is connected, the slag fine powder outlet of the secondary magnetic separator is connected with the fine powder conveyor 130, the tail slag outlet of the secondary magnetic separator is connected with the inlet of the ultrafine mill 140, and the steel slag cement of the ultrafine mill The output port is connected to the cement conveyor 150. In the present embodiment, the tilting device belongs to the prior art and will not be described in detail herein. Reference may be made to the steel furnace tilting device or the structure described in Chinese Patent No. 02135756 and 200410070342.

 Referring to FIG. 8, the fourth embodiment is an improvement on the basis of the third embodiment. In this embodiment, the traveling track of the melted aqueduct vehicle is obliquely disposed with the traveling track of the slag tanker. That is, the walking track of the slag aqueduct vehicle and the traveling track of the slag tanker are inclined at an angle of 30 ° ^ 60 °.

 Embodiment 5:

 Referring to FIG. 9, the embodiment is an improvement based on the third embodiment or the first embodiment. In the embodiment, the high-pressure water pipe or the pool of the slag granulation device is connected with the steelmaking plant sewage pool, and the steelmaking is used. The plant sewage is subjected to water quenching, and a condensing recovery device 501 is disposed above the slag granulating device, and the purified water outlet of the condensing recovery device is in communication with a purified water collector 502.

 Example 6:

 Referring to Fig. 10, a metallurgical slag cement short-flow production system includes a pre-slag slag tanker traveling rail 4, the slag tank car 3 is run on the traveling rail, a slag tank 401 is arranged on the slag tanker, and a melting is arranged on the side of the slag tanker traveling rail. a slag granulation device 40, wherein the slag granulation device is provided with a slag tank tilting device 402, and the slag tank truck can be transported by a crane to a slag tank tilting device, and the inlet end of the slag granulating device can be The slag granulation device is connected to the slag outlet; the granulation outlet of the slag granulation device is provided with a sump 70, and the sump is provided with a granulated slag lifting and dewatering device 60, and the lifting and dewatering device is provided at the discharge end a granulated slag conveyor, the discharge end of the granulated slag conveyor is arranged above the inlet of the primary magnetic separator, and the particle steel output port of the magnetic separator is connected to the steel collection bin through a particle steel conveyor, the magnetic The tailings output port of the machine is connected to the inlet end of the coarse grinding machine through the tail slag conveyor, the discharge port of the coarse grinding machine is connected with the inlet of the secondary magnetic separator, and the slag fine powder outlet of the secondary magnetic separator is refined. Powder conveyor connection, secondary magnetic separator Ultrafine slag and the outlet end of the feed inlet connection mill, ultrafine mill slag cement and cement output port connected to the conveyor.

 Example 7:

Referring to FIG. 2, the embodiment is an improvement on the first embodiment, a metallurgical slag cement short-flow production system, including a pre-furnace slag tanker traveling track, and a slag granulation device, a slag tanker, is disposed on a side of the slag tanker traveling track The slag aqueduct traveling track is disposed on the other side of the traveling track, and one end of the slag aqueduct traveling track meets with the slag tank traveling track, and the slag aqueduct is mounted with a steering slag aqueduct, and the slag aqueduct inlet The end can be docked with the steel furnace slag outlet, and the outlet end of the slag aqueduct can be docked with the chute of the slag granulation device; the slag granulation device has a sump at the granulation outlet, and the sump is provided There is a granulated slag lifting device, and a discharging slag dewatering device is provided at the discharging end of the lifting device, and the discharging end of the granulated slag dewatering device is provided a granulated slag conveyor, the discharge end of the granulated slag conveyor is arranged above the inlet of the first-order magnetic separator, and the particle steel output port of the magnetic separator is connected with the steel collection bin through the particle steel conveyor, The tail slag outlet of the magnetic separator is connected to the inlet end of the coarse mill through the tail slag conveyor, the discharge port of the coarse mill is connected to the inlet of the secondary magnetic separator, and the slag fine powder outlet of the secondary magnetic separator The fine powder conveyor is connected, the tail slag outlet of the secondary magnetic separator is connected with the inlet of the ultrafine mill, and the steel slag cement outlet of the ultrafine mill is connected with the cement conveyor.

 In the present embodiment, the granulated slag lifting device may use a mud pump or a pneumatic lifting device to feed the granulated slag in the sump into the granulated slag dewatering device. The granulated slag dewatering device can be used with a conventional drum type dehydrator. The dehydrator can be referred to the dehydrator described in the specification of the wheel slag granulation device disclosed in Chinese Patent No. 97228276. or the metallurgy disclosed in Chinese Patent No. 00261532. The dehydrator described in the slag treatment device manual.

 Example 8:

 A short-flow production method of metallurgical slag cement (see Fig. 2)

 Sending a slag aqueduct to the steel furnace dumping position, the inlet end of the slag aqueduct is docked with the steel furnace slag outlet, and the outlet end of the slag aqueduct is docked with the chute of the slag granulation device;

 The steel furnace tipping device is started to pour the steel slag into the slag aqueduct and is input into a metallurgical granulating device through the aqueduct, and processed by the granulating device to form granulated slag;

 The granulated slag lifting and dewatering device and the conveyor belt device are used to transport the granulated slag to a drying chamber, and the residual heat of the steelmaking converter is used for continuous drying, the drying temperature is 200-30 CTC, and the drying time is 0. 5- 1 minute;

 The conveyor belt device transports the dried granulated slag to a primary magnetic separator for magnetic separation processing, and the magnetically selected particle steel is transported to the collection bin, and the tail slag of the first-order magnetic separator is conveyed and coarsely ground. The grinding process is carried out in the machine, and the coarsely pulverized tail slag is sent to the secondary magnetic separator, the secondary magnetic separation slag fine powder is sent to the collection bin, and the secondary magnetic slag discharged tail slag enters the ultrafine mill for grinding treatment. Excipients are added to the grinding process to produce steel slag cement.

 Example 9:

 A short-flow production method of metallurgical slag cement (see Fig. 11)

 Sending a slag aqueduct to the smelting furnace dumping position, the inlet end of the slag aqueduct is docked with the smelting furnace 1 slag opening, and the outlet end of the slag 'aqueduct 101 is docked with the chute of the slag granulation device;

 The smelting furnace tilting device is started to pour the steel slag into the slag aqueduct and is input into a metallurgical granulating device 40 through the aqueduct, and processed by the granulating device to form granulated slag;

The granulated slag lifting and dewatering device 60 and the conveyor belt device 80 are used to transport the granulated slag to a drying chamber 801, and the waste heat of the steelmaking converter is used for continuous drying, and the drying temperature is 200-300 ° C. The drying time is 0. 5 - 1 minute;

 The conveyor belt device transports the dried granulated slag to the first-stage jigging separator 91 for sorting, and the sorted particle metal is transported to the collection bin 100, and the tail slag of the first-stage jigging separator The roughing mill 110 is subjected to grinding treatment, and the coarsely ground tailings are sent to the second-stage jigging separator 121, and the slag fine powder separated by the second-stage jigging is sent to the collecting bin through the fine powder conveyor 130, The tailings separated from the jigging enter the ultrafine mill 140 for grinding treatment, and the auxiliary materials are added in the grinding process to produce steel slag cement, which is sent to the cement silo through the cement conveyor 150.

Claims

1. A metallurgical slag cement short-flow production system, comprising a pre-furnace slag tanker traveling track, characterized in that: a slag granulation device is arranged on a side of a slag tanker traveling track, and a slag aqueduct vehicle is arranged on the other side of the slag tanker traveling track a walking track, one end of the slag aqueduct traveling track meets with the slag tank traveling track, and the slag aqueduct is equipped with a steering slag aqueduct, and the inlet end of the slag aqueduct can be docked with the steel furnace slag opening, The outlet end of the slag aqueduct can be docked with the chute of the slag granulation device; the granulation outlet of the slag granulation device is provided with a sump, and the sump is provided with a granulated slag lifting and dewatering device, the lifting Right to dehydration The discharge end of the device is provided with a granulated slag conveyor, and the discharge end of the granulated slag conveyor is arranged above the inlet of the primary magnetic separator, and the particle steel output port of the magnetic separator is collected by the particle steel conveyor and the steel material The warehouse connection, the tail slag output port of the magnetic separator is connected with the inlet end of the rough mill through the tail slag conveyor, the discharge port of the coarse mill and the second request The inlet of the magnetic separator is connected, the slag fine powder outlet of the secondary magnetic separator is connected with the fine powder conveyor, and the tail slag outlet of the secondary magnetic separator is connected with the inlet of the ultrafine mill, the ultrafine mill The steel slag cement outlet is connected to the cement conveyor.  2. The metallurgical slag cement short-flow production system according to claim 1, wherein: the steering slag aqueduct is a 90° steering aqueduct, and the slag aqueduct traveling track and the slag tanker traveling track are Orthogonal settings.  3. The metallurgical slag cement short-flow production system according to claim 1, wherein: the steering slag aqueduct is a 90° steering aqueduct, and the slag aqueduct traveling track and the slag tanker traveling track are Skew setting.  4. The metallurgical slag cement short-flow production system according to claim 1, wherein: the slag granulation device chute is provided with a slag buffer tank, and the slag buffer tank is installed on a tilting device. The outlet end of the slag aqueduct may be docked with the slag inlet end of the slag buffer tank.  5. The metallurgical slag cement short-flow production system according to claim 4, wherein: the steering slag aqueduct is a 90° steering aqueduct, and the slag aqueduct traveling track and the slag tanker traveling track are inclined Set the delivery.  6. The metallurgical slag cement short-flow production system according to claim 1, wherein: the slag granulating device high-pressure water pipe is connected to a steelmaking plant sewage pool, and is subjected to water quenching using steelmaking plant sewage, the melting A condensing recovery device is disposed above the slag granulation device, and the purified water outlet of the condensing recovery device is in communication with a purified water collector. · 7. A metallurgical slag cement short-flow production system, comprising a pre-furnace slag tanker traveling track, characterized in that: a slag granulation device is arranged on a side of the slag tanker traveling track, and the slag granulation device is provided with slag a tank tipping device, the inlet end of the slag granulation device may be docked with the slag outlet of the slag tank; the granulation outlet of the slag granulation device is provided with a sump, the sump is provided with a granule The slag lifting dewatering device is provided with a granulated slag conveyor at the discharge end of the lifting dewatering device, and the discharging end of the granulated slag conveyor is arranged above the inlet of the first-order magnetic separator, and the particle steel output port of the magnetic separator The particle steel steel conveyor is connected with the steel material collecting bin, and the tailings output port of the magnetic separator is connected with the inlet end of the coarse grinding machine through the tail slag conveyor, the discharge port of the coarse grinding machine and the inlet port of the secondary magnetic separator Connection, the slag fine powder outlet of the secondary magnetic separator is connected with the fine powder conveyor, the tail slag outlet of the secondary magnetic separator is connected with the inlet of the ultrafine mill, the steel slag cement outlet of the ultrafine mill and the cement conveying Machine connection.  8. A metallurgical slag cement short-flow production system, comprising a pre-furnace slag tanker traveling track, characterized in that: a slag granulation device is arranged on a side of a slag tanker traveling track, and a slag aqueduct vehicle is arranged on the other side of the slag tanker traveling track a walking track, one end of the slag aqueduct traveling track meets with the slag tank traveling track, and the slag aqueduct is equipped with a steering slag aqueduct, and the inlet end of the slag aqueduct can be docked with the steel furnace slag opening, The outlet end of the slag aqueduct can be docked with the chute of the slag granulation device; the granulation outlet of the slag granulation device is provided with a sump, and the sump is provided with a granulated slag lifting device, the lifting device The discharge end is provided with a granulated slag dewatering device, and the discharge end of the granulated slag dewatering device is provided with a granulated slag conveyor, and the discharge end of the granulated slag conveyor is disposed above the inlet of the primary magnetic separator, the magnetic The particle steel output port of the machine is connected to the steel material collection bin through the particle steel conveyor. The tail slag output port of the magnetic separator is connected to the inlet end of the rough mill through the tail slag conveyor, and the discharge port of the coarse mill is two Level magnetic The machine inlet is connected, the slag fine powder outlet of the secondary magnetic separator is connected with the fine powder conveyor, the tail slag outlet of the secondary magnetic separator is connected with the inlet of the ultrafine mill, and the steel slag cement output of the ultrafine mill The mouth is connected to the cement conveyor.  9. A metallurgical slag cement short process production method, characterized in that:  Sending a slag aqueduct to the steel furnace dumping position, the inlet end of the slag aqueduct is docked with the steel furnace slag outlet, and the outlet end of the slag aqueduct is docked with the chute of the slag granulation device;  The steel furnace tipping device is started to pour the steel slag into the slag aqueduct and is input into a metallurgical granulating device through the aqueduct, and processed by the granulating device to form granulated slag;  The granulated slag lifting and dewatering device and the conveyor belt device are used to transport the granulated slag to a drying chamber, and the residual heat of the steelmaking converter is used for continuous drying, and the drying temperature is 200-300 ° C, and the drying time is 0. 5—1 minute; The conveyor belt device transports the dried granulated slag to a primary magnetic separator for magnetic separation processing, and the magnetically selected particle steel is transported to the collection bin, and the tail slag of the first-order magnetic separator is conveyed and coarsely ground. The grinding process is carried out in the machine, and the coarsely pulverized tail slag is sent to the secondary magnetic separator, the secondary magnetic separation slag fine powder is sent to the collection bin, and the secondary magnetic slag discharged tail slag enters the ultrafine mill for grinding treatment. Adding auxiliary materials to the grinding process to produce steel slag water Mud.  10. A metallurgical slag cement short process production method, characterized in that:  Sending a slag aqueduct car to the smelting furnace dumping position, the inlet end of the slag aqueduct is docked with the smelting furnace slag opening, and the outlet end of the slag aqueduct is docked with the chute of the slag granulation device;  The smelting furnace tilting device is started to pour the steel slag into the slag aqueduct and is input into a metallurgical granulating device through the aqueduct, and processed by the granulating device to form granulated slag;  The granulated slag lifting conveying device and the conveyor belt device are used to transport the granulated slag to a drying chamber, and the residual heat of the steelmaking converter is used for continuous drying, and the drying temperature is 200-300 ° C, and the drying time is 0. 5—1 minute;  The conveyor belt device transports the granulated slag after drying to a first-stage jigging separator for sorting treatment, and the sorted particle metal is transported to the collection bin, and the tail slag of the first-stage jigging separator is transported. Grinding is carried out in the coarse grinding machine, and the coarsely ground tailings are sent to the second-stage jigging separator. The slag fine powder separated by the second-stage jigging is sent to the collecting bin, and the tailings separated by the second-stage jigging enters the ultrafine The mill is subjected to grinding treatment, and an auxiliary material is added to the grinding treatment to produce steel slag cement.