CN114858645A - Method for measuring content of metal materials in steel slag crude slag by magnetic separation and melting method - Google Patents
Method for measuring content of metal materials in steel slag crude slag by magnetic separation and melting method Download PDFInfo
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- CN114858645A CN114858645A CN202210549772.5A CN202210549772A CN114858645A CN 114858645 A CN114858645 A CN 114858645A CN 202210549772 A CN202210549772 A CN 202210549772A CN 114858645 A CN114858645 A CN 114858645A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a method for measuring the content of metal materials in steel slag by a magnetic separation and melting method, which comprises the following steps: weighing about 50Kg of steel slag raw slag, crushing the steel slag raw slag to below 10mm by using a jaw crusher (metal blocks larger than the rated size of the crusher are picked out and are merged into the raw steel slag when four parts are reduced), entering four parts, and grinding a part of (5-12) Kg of steel slag raw slag by using a sealed crusher (visual inspection of slag to form powder); weighing M by electronic scale 0 (5-10) Kg steel slag sample is put into magnetic separation flushing equipment, most slag powder is removed by flushing with water, then the steel slag sample is dried and put into a graphite crucible, the graphite crucible with the sample is arranged in an induction intermediate frequency furnace for test to be melted, the induction intermediate frequency furnace is closed after the steel slag sample is completely melted into molten steel, and the graphite crucible is taken out after the sample is cooled, and a metal block is taken out. The invention can be scientifically, simply and quickly crushed, ground and melted by the intermediate frequency furnace by utilizing a four-division methodAnd calculating the metal material content of the steel slag raw slag.
Description
Technical Field
The invention relates to the technical field of determination of metal material content in steel slag raw slag, in particular to a method for determining the metal material content in the steel slag raw slag by a magnetic separation and melting method.
Background
The steel industry slag raw slag is unprocessed smelting waste slag discharged in a steel making process. The steel enterprises generally need to select slag steel and magnetic separation powder in the steel enterprises through crushing, screening, magnetic separation and other modes to return to steel making or sintering for use. Because the steel slag raw slag not only contains slag steel with different grain sizes, but also selects magnetic separation powder with finer grain sizes in the processing process, and the residual tailings also need to evaluate the residual metal content, how to simply and quickly measure the metal content of the steel slag raw slag is also a big problem in the metallurgical industry.
The existing measuring method adopts crushing, magnetic separation and the like, then calculation is carried out, continuous sampling measurement is needed after the magnetic separation is adopted in the method, then registration records are marked, thus the trouble is large, the method is more complicated, errors exist, and meanwhile, during the final calculation, because the data marked and recorded in the front are more, the trouble is more in calculation, and the errors are easy to occur.
Therefore, a method for measuring the content of the metal materials in the steel slag crude slag by a magnetic separation and melting method is provided to solve the problems.
Disclosure of Invention
The invention aims to provide a method for measuring the content of metal materials in steel slag by a magnetic separation and melting method, which solves the problems in the background technology by combining the magnetic separation and the melting mode.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for measuring the content of metal materials in steel slag by a magnetic separation and melting method mainly comprises the following steps: crushing raw materials, crushing when four fractions enter, carrying out magnetic separation washing, drying, melting and weighing after crushing;
the equipment required by the determination method comprises: a jaw crusher, a sealed crusher, a magnetic separation washing device, a drying oven, a graphite crucible, an induction intermediate frequency furnace, an electronic scale and the like,
the determination method comprises the following steps: weighing about 50Kg of steel slag raw slag, crushing the steel slag raw slag to below 10mm by using a jaw crusher (metal blocks larger than the rated size of the crusher are selected out and are merged into the raw steel slag when in four-division), entering the four-division, and taking about one part of (A)5-12) Kg of steel slag raw slag is ground by a sealed grinder (the slag is visually inspected to be powdery); weighing M by electronic scale 0 (5-10) Kg steel slag sample is put into a magnetic separation washing device, most slag powder is washed by water, then the steel slag sample is dried and put into a graphite crucible, the graphite crucible with the sample is arranged in an induction intermediate frequency furnace for test to be melted, the induction intermediate frequency furnace is closed after the steel slag sample is completely melted into molten steel, the graphite crucible is taken out after the sample is cooled, a metal block is taken out, and weighing is carried out (M) 1 ）。
In a further embodiment, the (M) is added in advance in the melting step if the amount of slag is large enough to avoid incomplete melting in the intermediate frequency furnace 2 ) Melting about 2Kg of clean steel block, adding steel slag in batches for melting, and fishing out slag in time, deducting (M) in calculation 2 ) The weight of (c).
In further embodiment, magnetic separation flushing device is including bearing the base, being in the plastics cup that bears on the base, being used for washing the water source of slag and being in the magnetic separation structure of plastics cup bottom, and this magnetic separation structure is arranged in separating the metal material and the nonmetal material in the slag stoste, magnetic separation flushing device is still including the recovery structure that is used for collecting nonmetal material and accelerating the vibration structure of magnetic separation speed, retrieve the outside of structure parcel at the plastics cup, and swing joint between the two, the vibration structure is inside the magnetic separation structure.
In a further embodiment, the bottom of the plastic cup is in an upwardly convex configuration.
In a further embodiment, the inner bottom of the plastic cup is paved with filter cloth, the bottom of the plastic cup is provided with a plurality of water outlet valves, the outlet ends of the water outlet valves are connected with a uniform annular water collecting pipe, and the outlet end of the water collecting pipe is connected with a water outlet pipe for discharging water.
In a further embodiment, the outer rim of the inlet end of the plastic cup is provided with a skirt for draining.
In a further embodiment, the magnetic separation structure is a conical permanent magnet, and the conical permanent magnet is connected with the bearing base through screws.
In a further embodiment, the recycling structure is an inner-outer double-layer hollow transparent cup, the upper end of the inner-outer double-layer hollow transparent cup is provided with a filter, and one side of the inner-outer double-layer hollow transparent cup is connected with a drain pipe.
In a further embodiment, the filter is in the form of an arc-shaped structure and is placed directly on the upper end of the transparent cup.
In a further embodiment, the vibrating structure is a vibrating motor.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through crushing, grinding and intermediate frequency furnace melting, and by utilizing a four-division method, the metal material content of the steel slag raw slag can be scientifically, simply and quickly calculated, the problem of measuring the metal content of the steel slag raw slag in the metallurgical industry is solved, the metal content in the steel slag raw slag can be simply and quickly obtained, compared with the existing mode, the magnetic separation is simple, repeated sampling marking is not needed after the magnetic separation, and the calculation result is simple.
2. The magnetic separation flushing device can accelerate the magnetic separation speed, avoid part of metal materials from being separated out or avoid part of non-metal materials from remaining in the metal materials to influence the final measurement result, greatly reduce the error and collect the non-metal materials at the same time.
Drawings
FIG. 1 is a front view of a process for determining the content of metal materials in steel slag by a magnetic separation and melting method;
FIG. 2 is a schematic view of a magnetic separation washing apparatus according to the present invention;
FIG. 3 is a schematic sectional view of the magnetic separation washing apparatus of the present invention
FIG. 4 is a schematic side view of the magnetic separation washing apparatus of the present invention;
FIG. 5 is a schematic view of a header pipe according to the present invention;
FIG. 6 is a schematic view showing the relationship between the plastic cup and the transparent cup in the present invention.
In the figure: 1. a jaw crusher; 2. a sealed pulverizer; 3. magnetic separation flushing equipment; 4. a dry oven; 5. a graphite crucible; 6. induction medium frequency furnace; 31. a load bearing base; 32. a plastic cup; 33. a vibration motor; 34. a water source; 35. a transparent cup; 36. a filter; 37. a permanent magnet; 38. a water outlet valve; 39. filtering cloth; 310. a water collection pipe; 311. a drain pipe; 312. a water outlet pipe; 321. a skirt.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a method for determining the content of metal materials in steel slag by magnetic separation and melting method, which comprisesThe determination method mainly comprises the following steps: the raw materials are crushed and crushed when entering the four-component separation, and then are subjected to magnetic separation washing, drying, melting and weighing, and the method comprises the following specific steps: weighing about 50Kg of steel slag raw slag, crushing the steel slag raw slag to below 10mm (metal blocks larger than the rated size of the crusher are picked out and are merged into the raw steel slag when in four-division) by using a jaw crusher 1, entering the four-division, and grinding (visual inspection of slag to be pulverized) a part of about 5-12 Kg of steel slag raw slag by using a sealed crusher 2; weighing M by electronic scale 0 (5-10) Kg steel slag sample is put into a magnetic separation washing device 3, most slag powder is washed by water, then the steel slag sample is dried and put into a graphite crucible 5, the graphite crucible 5 with the sample is put into an induction intermediate frequency furnace 6 for test to be melted, after the steel slag sample is completely melted into molten steel, the induction intermediate frequency furnace 6 is closed, after the sample is cooled, the graphite crucible 5 is taken out, a metal block is taken out, and the steel slag sample is weighed (M) 1 ) In the melting step, if the amount of slag is large enough to avoid complete melting in the intermediate frequency furnace, the (M) is added in advance 2 ) Melting about 2Kg of clean steel block, adding steel slag in batches for melting, and fishing out slag in time, deducting (M) in calculation 2 ) The weight of (c).
Example 1
The method comprises the steps of taking 51kg of steel slag as it is, crushing the steel slag to be less than 10mm by a jaw crusher 1 (metal blocks larger than the rated size of the crusher are picked out and are merged into the original steel slag when four parts are reduced), entering the four parts to be reduced, and taking 8kg of the steel slag to be ground by a sealed crusher 2 (the slag is visually inspected to be powdered). Weighing M by electronic scale 0 Putting a steel slag sample of which the volume is not less than 5.852Kg into a 5000ml plastic cup 32, filling a permanent magnet 37 on the outer bottom of the plastic cup 32 to absorb metal materials, washing most slag powder with water, drying and putting the steel slag sample into a graphite crucible 5, putting the graphite crucible 5 with the sample into an induction intermediate frequency furnace 6 for testing to melt, closing the induction intermediate frequency furnace 6 after the steel slag is completely melted into molten steel, taking out the graphite crucible 5 after the sample is cooled, taking out a metal block, weighing M by using an electronic scale 1 =2.417 kg, metal content =2.417/5.852 × 100% = 41.30%.
Example 2
Taking 53kg of original steel slag, crushing by a jaw crusher 1And (3) the thickness is less than 10mm (the metal blocks with the size larger than the rated size of the crusher are picked out and are merged into the original steel slag when the four parts are divided), the steel slag enters the four parts to be divided, and a part of 10kg of the steel slag is ground by a sealed grinder 2 (the slag is ground by visual inspection). Weighing M by electronic scale 0 Putting the steel slag sample of which the volume is 6.000Kg into a 5000ml plastic cup 32, padding a permanent magnet 37 at the outer bottom of the plastic cup 32 to absorb metal materials, washing most slag powder by water, and drying. Putting an M2=1.85kg steel bar sample into a crucible to melt in an intermediate frequency furnace, then putting the dried steel slag into a graphite crucible 5 in 3 batches to melt, closing an induction intermediate frequency furnace 6 after the steel slag is completely melted into molten steel, taking out the graphite crucible 5 after the sample is cooled, taking out a metal block, and weighing M by using an electronic scale 1 =3.383kg, metal content = (3.383-1.85)/6 × 100% = 25.55%.
Referring to FIGS. 1-5, the apparatus required for the assay method includes: jaw breaker 1, sealed rubbing crusher 2, magnetic separation flushing device 3, dry formula oven 4, graphite crucible 5, induction intermediate frequency furnace 6 and electronic scale etc. above jaw breaker 1, sealed rubbing crusher 2, dry formula oven 4, graphite crucible 5, induction intermediate frequency furnace 6 and electronic scale etc. all purchase in current product, and in order to accelerate the speed that the magnetic separation washed and guarantee the precision of magnetic separation, magnetic separation equipment has improved.
Specifically, referring to fig. 2-5, the magnetic separation flushing device 3 is roughly composed of a bearing base 31, a plastic cup 32 on the bearing base 31, a water source 34 for flushing steel slag, and a magnetic separation structure at the bottom of the plastic cup 32, the magnetic separation structure is used for separating metal materials and non-metal materials in raw steel slag, the magnetic separation flushing device 3 further includes a recovery structure for collecting non-metal materials and a vibration structure for accelerating the speed of magnetic separation, the recovery structure is wrapped outside the plastic cup 32 and is movably connected with the plastic cup, the vibration structure is inside the magnetic separation structure, when a weighed steel slag sample is placed in the plastic cup 32, water is filled in the water source 34, a pair of samples is impacted and dispersed, at this time, the metal materials are adsorbed at the bottom of the plastic cup 32 by the magnetic separation structure at the bottom, and the non-metal materials float up with the increase of water, spread into the recovery structure and in order to speed up the vibration structure can speed up the separation of the metal material and the non-metal material.
Referring to fig. 2-4, in order to ensure that the effect of separating the metal material from the nonmetal material is better during the magnetic separation, the bottom of the plastic cup 32 is arranged to be convex upward, and the conical permanent magnet 37 is attached to the bottom of the cup, so that the range of the metal material attracted by the magnetism is enlarged, the metal material can be magnetically separated during the descending process of the cup, instead of being magnetically separated when falling into the bottom of the cup, the attachment area of the metal material can be increased, and the nonmetal material is reduced from being clamped in the metal material.
Referring to fig. 2-6, the recycling structure is a hollow transparent cup 35 with an inner layer and an outer layer, the upper end of the cup is provided with a filter 36, one side of the cup is connected with a drain pipe 311, the plastic cup 32 is inserted in the hollow part of the middle of the cup 35, the water and the non-metal materials in the plastic cup 32 spread out and flow to the filter 36 at the upper end of the cup 35, the non-metal materials are filtered on the filter 36, the water enters the cup 35 and is discharged through the drain pipe 311, and the skirt 321 at the edge of the inlet end of the plastic cup 32 guides the spread water and the non-metal materials to enter the cup 35.
Referring to fig. 2-4, the vibrating structure is a vibrating motor 33 disposed inside the permanent magnet 37 to drive the permanent magnet 37, the plastic cup 32 and the transparent cup 35 to vibrate to accelerate the separation of the metal materials from the nonmetal materials.
Referring to fig. 2, after the magnetic separation is finished, the water source 34 is turned off, the water outlet valve 38 at the bottom of the plastic cup 32 is opened, the water in the plastic cup 32 enters the water collecting pipe 310 from the water outlet valve 38, and is discharged from the water outlet pipe 312 in a unified manner, and then the plastic cup 32 is taken out from the transparent cup 35.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A method for measuring the content of metal materials in steel slag by a magnetic separation and melting method is characterized by comprising the following steps: the determination method mainly comprises the following steps: crushing raw materials, crushing when four fractions enter, carrying out magnetic separation washing, drying, melting and weighing after crushing;
the equipment required by the determination method comprises: a jaw crusher (1), a sealed crusher (2), a magnetic separation washing device (3), a drying oven (4), a graphite crucible (5), an induction intermediate frequency furnace (6), an electronic scale and the like,
the determination method comprises the following steps: weighing about 50Kg of steel slag raw slag, crushing the steel slag raw slag to below 10mm (metal blocks larger than the rated size of the crusher are picked out and are merged into the raw steel slag when the four parts are divided) by using a jaw crusher (1), entering the four parts, and grinding (visual inspection of slag to form powder) a part of about 5-12 Kg of steel slag raw slag by using a sealed crusher (2); weighing M by electronic scale 0 (5-10) Kg steel slag sample is put into a magnetic separation flushing device (3), most slag powder is flushed by water, then the steel slag sample is dried and put into a graphite crucible (5), the graphite crucible (5) with the sample is arranged in an induction intermediate frequency furnace (6) for test to be melted, after the steel slag sample is completely melted into molten steel, the induction intermediate frequency furnace (6) is closed, after the sample is cooled, the graphite crucible (5) is taken out, a metal block is taken out, and the steel slag sample is weighed (M) 1 ）。
2. According to the claimsThe method for determining the content of the metal materials in the steel slag crude slag by the magnetic separation and melting method in the step 1 is characterized by comprising the following steps: in the melting step, if the slag quantity is large to avoid the slag not being completely melted in the intermediate frequency furnace, the (M) is added in advance 2 ) Melting about 2Kg of clean steel block, adding steel slag in batches for melting, and fishing out slag in time, deducting (M) in calculation 2 ) The weight of (c).
3. The method for determining the content of the metal materials in the steel slag crude slag by the magnetic separation and melting method according to claim 1, which is characterized in that: magnetic separation flushing device (3) including bearing base (31), being in plastics cup (32) that bear on base (31), being used for washing water source (34) of slag and being in the magnetic separation structure of plastics cup (32) bottom, this magnetic separation structure is arranged in separating the metal material and the nonmetal material in the slag former sediment, magnetic separation flushing device (3) is still including the vibration structure that is used for collecting the recovery structure of nonmetal material and accelerates magnetic separation speed, retrieve the outside of structure parcel in plastics cup (32), and swing joint between the two, the vibration structure is inside the magnetic separation structure.
4. The method for determining the content of the metal materials in the steel slag crude slag by the magnetic separation and melting method according to claim 3, which is characterized in that: the bottom of the plastic cup (32) is of an upward convex structure.
5. The method for determining the content of the metal materials in the steel slag crude slag by the magnetic separation and melting method according to claim 3, which is characterized in that: the filter cloth (39) is laid at the inner bottom of the plastic cup (32), a plurality of water outlet valves (38) are installed at the bottom of the plastic cup (32), the outlet ends of the water outlet valves (38) are connected with a uniform annular water collecting pipe (310), and the outlet end of the water collecting pipe (310) is connected with a water outlet pipe (312) for discharging water.
6. The method for determining the content of the metal materials in the steel slag crude slag by the magnetic separation and melting method according to claim 3, which is characterized in that: the outer edge of the inlet end of the plastic cup (32) is provided with a skirt (321) for drainage.
7. The method for determining the content of the metal materials in the steel slag crude slag by the magnetic separation and melting method according to claim 3, which is characterized in that: the magnetic separation structure is a conical permanent magnet (37) which is connected with the bearing base (31) through screws.
8. The method for determining the content of the metal materials in the steel slag crude slag by the magnetic separation and melting method according to claim 3, which is characterized in that: the recycling structure is an inner-outer double-layer hollow transparent cup (35), a filter (36) is placed at the upper end of the recycling structure, and a drain pipe (311) is connected to one side of the recycling structure.
9. The method for determining the content of the metal materials in the steel slag crude slag by the magnetic separation and melting method according to claim 8, which is characterized in that: the filter (36) presents an arc-shaped structure and is placed directly on the upper end of the transparent cup (35).
10. The method for determining the content of the metal materials in the steel slag crude slag by the magnetic separation and melting method according to claim 3, which is characterized in that: the vibrating structure is a vibrating motor (33).
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| CN202210549772.5A CN114858645A (en) | 2022-05-20 | 2022-05-20 | Method for measuring content of metal materials in steel slag crude slag by magnetic separation and melting method |
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| CN202210549772.5A CN114858645A (en) | 2022-05-20 | 2022-05-20 | Method for measuring content of metal materials in steel slag crude slag by magnetic separation and melting method |
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| CN1083744A (en) * | 1992-11-26 | 1994-03-16 | 沈定方 | Water Magnetic Separator Iron Concentrator and Its Application Method |
| CN102806143A (en) * | 2012-08-16 | 2012-12-05 | 芜湖新兴铸管有限责任公司 | Screening and magnetic separation system for waste steel and steel slag and screening and magnetic separation method thereof |
| JP2018141196A (en) * | 2017-02-27 | 2018-09-13 | Ｊｆｅスチール株式会社 | Sorting method of steel slag, recycling method of steel slag, and production method of ironmaking raw material |
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| WO2021185599A1 (en) * | 2020-03-16 | 2021-09-23 | Miltenyi Biotec B.V. & Co. KG | Microfabricated sorter with magnetic sorting stage and droplet dispenser |
| US20220016638A1 (en) * | 2020-07-14 | 2022-01-20 | Cláudio Henrique Teixeira Ribeiro | Magnetic separators with stationary magnetic matrices, and methods of using the same |
| CN114196824A (en) * | 2021-11-10 | 2022-03-18 | 武汉钢铁有限公司 | Preparation method of slag steel hot-pressing block |
| CN216094233U (en) * | 2021-08-31 | 2022-03-22 | 湖北华方装备有限公司 | Mineral magnetic separator with vibration mechanism |
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2022
- 2022-05-20 CN CN202210549772.5A patent/CN114858645A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083744A (en) * | 1992-11-26 | 1994-03-16 | 沈定方 | Water Magnetic Separator Iron Concentrator and Its Application Method |
| CN102806143A (en) * | 2012-08-16 | 2012-12-05 | 芜湖新兴铸管有限责任公司 | Screening and magnetic separation system for waste steel and steel slag and screening and magnetic separation method thereof |
| JP2018141196A (en) * | 2017-02-27 | 2018-09-13 | Ｊｆｅスチール株式会社 | Sorting method of steel slag, recycling method of steel slag, and production method of ironmaking raw material |
| WO2021185599A1 (en) * | 2020-03-16 | 2021-09-23 | Miltenyi Biotec B.V. & Co. KG | Microfabricated sorter with magnetic sorting stage and droplet dispenser |
| CN111896417A (en) * | 2020-06-19 | 2020-11-06 | 马鞍山钢铁股份有限公司 | A kind of detection method of metallic iron content in briquette particle steel |
| US20220016638A1 (en) * | 2020-07-14 | 2022-01-20 | Cláudio Henrique Teixeira Ribeiro | Magnetic separators with stationary magnetic matrices, and methods of using the same |
| CN216094233U (en) * | 2021-08-31 | 2022-03-22 | 湖北华方装备有限公司 | Mineral magnetic separator with vibration mechanism |
| CN114196824A (en) * | 2021-11-10 | 2022-03-18 | 武汉钢铁有限公司 | Preparation method of slag steel hot-pressing block |
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