CN110631379A - A composite cooling kiln with air cooling and water cooling - Google Patents

Abstract

The invention discloses a compound cooling kiln with air cooling and water cooling, which includes a kiln body and a driving device, and also includes a water cooling device and an air cooling device. The water cooling device includes a spray pipe, a water collection tank and a water delivery pump. The pipe is arranged above the discharge section of the kiln body, the water collection tank and the water delivery pump are arranged under the kiln body, and the water delivery pump transports the water in the water collection box to the spray pipe through the water delivery pipe; the air cooling device includes a blower, a blower pipe, a blower The air channel and the main outlet pipe, the blower and the blast pipe are arranged at the discharge end of the kiln body, the main air outlet pipe is arranged at the feed end of the kiln body, the blast channel is arranged in the kiln body, and the blast channel includes the resistant The hot gas pipe and the annular passage located in the feed section, the annular passage is formed by the distance between the jacket of the feed section and the kiln body, and the blower, the blast pipe, the heat-resistant air pipe, the annular passage and the total air outlet pipe are connected in sequence. During the production process of lithium hydroxide, the material can be cooled quickly, the cooling effect is good, the equipment investment is small, and the cost is low.

Description

A composite cooling kiln with air cooling and water cooling

technical field

The invention relates to the technical field of lithium hydroxide production equipment, in particular to a composite cooling kiln with air cooling and water cooling.

Background technique

Lithium hydroxide is a white crystalline powder, soluble in water, slightly soluble in organic solvents such as alcohol, and has been widely used in the fields of batteries, chemicals, energy, metallurgy, ceramics, semiconductors, etc. At present, the main method of producing lithium hydroxide is obtained by using spodumene as raw material, through high-temperature calcination transformation, acidification roasting, freezing and separation of sodium sulfate, evaporation, and low-temperature recrystallization. In the production process, a cooling kiln is used to cool the calcined material. However, in the process of use, it was found that due to the slow cooling speed of the conventional cooling kiln, the effect is poor. At the same time, in order to match the output of the calcining kiln, the cooling kiln needs to be lengthened or equipped with multiple cooling kilns, which increases equipment investment and operating costs. A large number of sites, therefore, urgently need to develop a kind of cooling kiln that solves above-mentioned problem.

Contents of the invention

Aiming at the problems in the prior art, the present invention provides a composite cooling kiln with air cooling and water cooling. The cooling kiln can quickly cool the materials during the lithium hydroxide production process, with good cooling effect and low equipment investment. low cost.

The technical solution adopted in the present invention is: to provide a combined cooling kiln with air cooling and water cooling, including a kiln body and a driving device, the kiln body is installed on a rotating support, and the kiln body includes a feeding section and an outlet The material section, the kiln body and the driving device are connected, and the driving device drives the kiln body to rotate on the rotating support. The cooling kiln also includes a water cooling device and an air cooling device. The water cooling device includes a spray pipe, a water collection tank and a water delivery pump. , the spray pipe is set above the discharge section of the kiln body, the spray port of the spray pipe faces the kiln body, the water collection tank and the water delivery pump are arranged under the kiln body, and the water delivery pump transports the water in the water collection box to the spray nozzle through the water delivery pipe Shower;

The air-cooling device includes a blower, a blast pipe, a blast channel and a total outlet pipe, the blower and the blast pipe are arranged at the discharge end of the kiln body, the total air outlet pipe is arranged at the feed end of the kiln body, and the air blast The channel is set in the kiln body. The blast channel includes a heat-resistant air pipe in the discharge section and an annular channel in the feed section. The annular channel is formed by the distance between the jacket of the feed section and the kiln body. The blower, blast pipe , the heat-resistant air pipe, the annular channel and the total air outlet pipe are connected in sequence, the blast pipe and the heat-resistant air pipe are connected in rotation, and the connection structure between the heat-resistant air pipe and the annular channel is: a plurality of connecting pipes are arranged circularly on the outer wall of the heat-resistant air pipe, and the connecting pipes The heat-resistant air pipe is connected with the annular passage, and the connection structure between the annular passage and the main air outlet pipe is as follows: multiple connection pipes are annularly arranged on the outer wall of the main air outlet pipe, and the connecting pipes communicate the annular passage with the main air outlet pipe.

As a further preference of this technical solution, a feed hopper is provided at the feed end of the kiln body, and two feed troughs are provided at the lower end of the feed hopper, and the feed troughs are respectively arranged on both sides of the main air outlet pipe.

As a further preference of this technical solution, the water cooling device further includes a plurality of water baffles and water flume plates, the water flume plates are arranged evenly on the outer wall of the kiln body along the axial direction of the kiln body, and the water baffles are arranged on the kiln body On the outer circumference in the radial direction and vertically connected with the kiln body, the water retaining plate and the flume plate form a water storage area.

As a further preference of the technical solution, the water tank plate is provided with a plurality of hydrophobic pores, which can prevent the water between the water tank plates from leaving too quickly.

After adopting the structure, the cooling kiln of the present invention is equipped with water cooling device and air cooling device, the cooling speed is fast and the efficiency is high, and in the feeding section and the discharging section of the kiln body, different cooling devices are set according to the temperature characteristics of the material for cooling. The cooling effect is good, the structure of the invention is simple, the cooling water can be recycled, and the input cost is low.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic cross-sectional view of the kiln body of the present invention.

Fig. 3 is a schematic diagram of the feed structure of the feed end of the kiln body of the present invention.

Fig. 4 is a left side view of Fig. 3 .

In the figure, 1-kiln body, 2-spray pipe, 3-annular channel, 4-water baffle, 5-rotating support, 6-water collection tank, 7-water delivery pump, 8-driving device, 9-blower, 10-flume plate, 11-heat-resistant air pipe, 12-blast pipe, 13-general air outlet pipe, 14-feed hopper, 15-feeding chute.

Detailed ways

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

As shown in Figures 1 to 4, the air-cooled and water-cooled cooling kiln of the present invention includes a kiln body 1 and a driving device 8. The kiln body 1 is installed on a rotating support 5, and the rotating support 5 is a rotating supporting wheel. There is an aperture on the body 1, and the aperture is in rotational contact with the rotating supporting wheel. The kiln body 1 includes a feeding section and a discharging section. The kiln body 1 is connected to a driving device 8, and the driving device 8 drives the kiln body 1 to rotate on the rotating support In addition, the present invention also includes a water cooling device and an air cooling device. The water cooling device includes a spray pipe 2, a water collection tank 6 and a water pump 7. The spray pipe 2 is arranged above the discharge section of the kiln body 1, along the length of the kiln body 1. The direction is set, the spray port of the spray pipe 2 faces the kiln body 1, the water collection tank 6 and the water delivery pump 7 are arranged under the kiln body 1, and the water delivery pump 7 transports the water in the water collection box 6 to the spray pipe 2 through the water delivery pipe. The outer wall of the kiln body 1 is also provided with a plurality of water retaining plates 4 and flume plates 10, the water flume plates 10 are arranged evenly on the outer wall of the kiln body 1 along the axial direction of the kiln body 1, and the water retaining plates 4 are arranged in the radial direction of the kiln body 1 On the outer circumference of the kiln body 1 and vertically connected to the kiln body 1, the water retaining plate 4 is arranged at the tail end of the water tank plate 10, which is the lower end of the kiln body 1, that is, the water retaining plate 4 divides the water tank plate 10 into several sections, and the water retaining plate 4 The plates 4 block the spray water in the space between the sink plates 10 to form a water storage area.

The air cooling device of the present invention comprises a blower 9, a blast pipe 12, a blast channel and a total outlet pipe 13, the blower 9 and the blast pipe 12 are arranged outside the kiln body 1 and at the discharge end of the kiln body 1, and the total outlet pipe 13 is located at the feed end of the kiln body 1, and the blast channel is located in the kiln body 1. The blast channel includes a heat-resistant air pipe 11 located at the discharge section and an annular channel 3 located at the feed section. The annular channel 3 is formed by the inlet The distance between the jacket of the material section and the kiln body 1 is formed. The jacket is a cover with a diameter larger than the kiln body 1 and set at a certain distance outside the kiln body 1. The blower 9, the blast pipe 12, the heat-resistant air pipe 11, and the annular channel 3 and the total air outlet pipe 13 are connected sequentially, the air blast pipe 12 and the heat-resistant air pipe 11 are connected in rotation, that is, the diameter of the heat-resistant air pipe 11 is slightly smaller than the diameter of the air blast pipe 12, and a sealed asbestos is arranged between the two, and the heat-resistant air pipe 11 and the ring The connection structure of channel 3 is: on the outer wall of heat-resistant air pipe 11, a plurality of connecting pipes are arranged circularly, and the connecting pipes connect heat-resistant air pipe 11 and annular channel 3, and the connection structure of annular channel 3 and total air outlet pipe 13 is: total air outlet pipe 13 A plurality of connecting pipes are annularly arranged on the outer wall, and the connecting pipes communicate the annular channel 3 with the total air outlet pipe 13 . Specifically: one end of the blast pipe 12 is connected to the air outlet of the blower 9, and the other end is rotationally connected to the heat-resistant air pipe 11. The heat-resistant air pipe 11 extends from the discharge end of the kiln body 1 to the annular channel 3, where the heat-resistant The end of the gas pipe 11 is closed, and the outer wall of the heat-resistant gas pipe 11 is connected with a plurality of connecting pipes in a circular arrangement. Connecting pipe, the connecting pipe connects the annular channel 3 with the total air outlet pipe 13.

In the present invention, a feed hopper 14 is arranged at the feed end of the kiln body 1, and two feed troughs 15 are arranged at the lower end of the feed hopper 14, and the feed troughs 15 are respectively arranged on both sides of the total air outlet pipe 13, so that the total air outlet pipe 13 is not affected. The rotation and unobstructed feeding.

The water tank plate 10 in this embodiment is provided with a plurality of hydrophobic pores. The hydrophobic fine holes can make the water between the sink plates 10 slowly penetrate into the adjacent sink plates 10 when the water is spraying, so as to avoid water falling rapidly during the rotation of the kiln body 1 and enhance the cooling effect.

In the specific use process of the present invention, the water delivery pump 7 transports the water to the spray pipe 2 and sprays it to the kiln body 1 for cooling. The spray 2 water stays between the water tank plates 10 for a short time, and the water sprayed after the kiln body 1 rotates Dropped into the water collection tank 6 to be recycled again. Another cooling method of the kiln body 1 is to pass cold air into the kiln body 1 for cooling. The invention has the advantages of simple structure, greatly improved cooling efficiency, good cooling effect and low investment cost.

Claims (4)

1. A compound cooling kiln with air cooling and water cooling, comprising a kiln body and a driving device, the kiln body is installed on a rotating support, the kiln body includes a feeding section and a discharging section, a kiln body and a driving device connection, the driving device drives the kiln body to rotate on the rotating support, and is characterized in that it also includes a water cooling device and an air cooling device, The water cooling device includes a spray pipe, a water collection tank and a water delivery pump, the spray pipe is arranged above the discharge section of the kiln body, the spray port of the spray pipe faces the kiln body, and the water collection tank and the water delivery pump are arranged under the kiln body , the water transfer pump transfers the water in the water collection tank to the spray pipe through the water transfer pipe; The air-cooling device includes a blower, a blast pipe, a blast channel and a total outlet pipe, the blower and the blast pipe are arranged at the discharge end of the kiln body, the total air outlet pipe is arranged at the feed end of the kiln body, and the air blast The channel is set in the kiln body. The blast channel includes a heat-resistant air pipe in the discharge section and an annular channel in the feed section. The annular channel is formed by the distance between the jacket of the feed section and the kiln body. The blower, blast pipe , the heat-resistant air pipe, the annular channel and the total air outlet pipe are connected in sequence, the blast pipe and the heat-resistant air pipe are connected in rotation, and the connection structure between the heat-resistant air pipe and the annular channel is: a plurality of connecting pipes are arranged circularly on the outer wall of the heat-resistant air pipe, and the connecting pipes The heat-resistant air pipe is connected with the annular passage, and the connection structure between the annular passage and the main air outlet pipe is as follows: multiple connection pipes are annularly arranged on the outer wall of the main air outlet pipe, and the connecting pipes communicate the annular passage with the main air outlet pipe. 2. The combined air-cooled and water-cooled cooling kiln according to claim 1, characterized in that: a feeding hopper is arranged at the feeding end of the kiln body, and two feeding troughs are arranged at the lower end of the feeding hopper, and the The lower troughs are respectively set on both sides of the total outlet pipe. 3. The composite cooling kiln with air cooling and water cooling according to claim 2, characterized in that: the water cooling device also includes a plurality of water baffles and water tank plates, and the water tank plates are along the axis of the kiln body It is evenly arranged on the outer wall of the kiln body, the water retaining plate is arranged on the outer circumference of the kiln body in the radial direction and is vertically connected with the kiln body, and the water retaining plate and the water tank plate form a water storage area. 4. The combined air-cooled and water-cooled cooling kiln according to claim 3, characterized in that: the water tank plate is provided with a plurality of hydrophobic pores.

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