CN119634002A - A high-grade nickel matte fine grinding pulping system and use method - Google Patents
A high-grade nickel matte fine grinding pulping system and use method Download PDFInfo
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- CN119634002A CN119634002A CN202411846048.4A CN202411846048A CN119634002A CN 119634002 A CN119634002 A CN 119634002A CN 202411846048 A CN202411846048 A CN 202411846048A CN 119634002 A CN119634002 A CN 119634002A
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Abstract
The invention relates to the technical field of high nickel matte pulping, and particularly discloses a high nickel matte fine grinding pulping system which comprises a horizontal ball mill, a spiral classifier and a stirring fine mill, wherein the horizontal ball mill is used for coarse grinding of ore pulp, the stirring fine mill is used for fine grinding of ore pulp, the spiral classifier is arranged on one side of the horizontal ball mill, a discharge port of the horizontal ball mill is communicated with a feed inlet of the spiral classifier through a connecting pipe, and a return port of the spiral classifier is communicated with the feed inlet of the horizontal ball mill.
Description
Technical Field
The invention relates to the technical field of high nickel matte pulping, in particular to a high nickel matte fine grinding pulping system.
Background
The high nickel matte in the nickel intermediate product is the most economical raw material for producing nickel sulfate, but the nickel content in nickel sulfur is greatly changed and the blowing vulcanization degree is inconsistent due to the influence of the raw material components and the smelting process, the nickel-iron alloy content is greatly changed, and the ultra-fine high-concentration slurry is difficult to economically and efficiently prepare for producing the battery-grade nickel sulfate.
The process has several difficult technical problems that the ① raw materials contain high nickel, cobalt and iron content, especially contain 3-15 mm alloy particles, have excellent toughness and ductility and are difficult to crush, and the particle fineness in ② slurry meets the requirement that the particle fineness is more than or equal to 90 percent of minus 280 meshes, so that the leaching speed and the leaching completion rate in nickel wet smelting are ensured. ③ In the subsequent wet nickel extraction, the stability requirements on slurry concentration, granularity and volume are strict, generally 50% +/-2%, the general wet superfine pulping process and device are difficult to achieve, and alloy materials in ④ high-nickel materials are easy to roll into flake shapes in the crushing process, so that a mineral discharge port and a pipeline are blocked, and the production smoothness is hindered.
In view of the above technical problems, a system and a method for fine grinding and pulping of high nickel matte are needed to be specially used for producing high nickel matte pulp in nickel intermediate products.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a high nickel matte fine grinding pulping system.
The high nickel matte fine grinding pulping system comprises a horizontal ball mill, a spiral classifier and a stirring fine mill, wherein the horizontal ball mill is used for coarse grinding of ore pulp; the stirring fine mill is used for finely grinding ore pulp, the spiral classifier is arranged on one side of the horizontal ball mill, the discharge port of the horizontal ball mill is communicated with the feed inlet of the spiral classifier through a connecting pipe, and the return port of the spiral classifier is communicated with the feed inlet of the horizontal ball mill;
The discharge port of the spiral classifier is communicated with a storage mechanism, and the storage mechanism is connected with a feed port at the bottom of the stirring fine mill through a guide pipe;
The storage mechanism comprises a first storage container and a second storage container, wherein the first storage container is used for storing ore pulp discharged by the spiral classifier and adjusting the ore pulp level in the spiral classifier, so that the stability of the ore pulp level of the ore grinding system is ensured, and the stable feeding effect of the stirring fine mill is maintained.
The stirring fine mill comprises a stirring container, wherein the interior of the stirring container forms a grinding area positioned at the lower end and a sedimentation area positioned at the upper end through a grading ring baffle;
the stirring fine mill is provided with a stirrer at the center, the stirrer is provided with a grading wheel, the grading wheel is positioned below the grading ring baffle, and the diameter of the grading wheel is larger than the diameter of the inner hole of the grading ring baffle.
The stirring fine mill adopts a low-chromium or medium-chromium steel ball medium with the diameter of 10-30 mm and is proportioned according to a proper proportion, so that sufficient energy density can be provided to ensure that the ore discharge granularity of the stirring fine mill, namely-280 meshes, is more than or equal to 90 percent;
The stirring fine mill is designed with a variable frequency control device, the running frequency is 30-50 Hz, the edge linear speed of the stirrer is 4-5 m/s, and the crushing force requirement of materials below 1mm is met.
The second storage container is communicated with the first storage container, and the height difference between the discharge hole of the second storage container and the stirring fine mill is larger than 4m.
The classifying wheel is provided with a gap of 3 mm-10 mm.
The horizontal ball mill has the function of automatically adjusting the water quantity, ensures that the mass concentration of slurry in the cylinder is stabilized within a range of 40% -50%, ensures that the discharge granularity is stabilized below-1 mm, and ensures that high nickel matte pulp has better fluidity.
The horizontal ball mill equipment is provided with a low-chromium or medium-chromium steel ball medium with the thickness of 60 mm-120 mm, and the low-chromium or medium-chromium steel ball medium is proportioned according to a proper proportion.
Using method of high nickel matte fine grinding pulping system
S1, inputting coarse-particle high-nickel matte raw materials with the diameter of 1 mm-15 mm into a horizontal ball mill;
s2, grinding the coarse particle raw materials by a horizontal ball mill, discharging the coarse particle raw materials into a spiral classifier for classification, overflowing ore pulp with the granularity of less than 1mm from the spiral classifier to a first storage container, and returning the ore pulp with the granularity of more than 1mm into the horizontal ball mill for grinding again by a return port under the drive of a spiral blade of the spiral classifier;
S3, conveying the ore pulp in the first storage container to a second storage container, and enabling the ore pulp in the second storage container to enter a grinding area in the stirring fine mill from a feed inlet at the bottom of the stirring fine mill by gravity forced self-flow;
S4, ore pulp in the grinding area of the stirring fine grinder is subjected to rotation of a stirrer, is further crushed by matching with steel ball media, and is discharged from a sedimentation opening in a sedimentation area under the screening of a classification wheel and a classification ring baffle.
Compared with the prior art, the invention has the following beneficial effects:
1. The high nickel matte fine grinding system can be suitable for coarse alloy particles with the toughness of 3-15 mm and the ductility of the coarse alloy particles, can carry out high-efficiency and energy-saving crushing and grinding on the materials, solves the problem that the alloy is difficult to grind in the general pulping process to cause the blockage of a mineral discharge port and a pipeline, and has smooth and steady operation in the production process.
2. The slurry concentration, granularity and volume of the high nickel matte fine grinding system are very stable, fluctuation is small, the problem of large fluctuation of general wet superfine pulping is solved, the particle fineness of-280 meshes in the high nickel matte discharging slurry is more than or equal to 90%, the problem of superfine particles in the high nickel matte slurry is solved, and the leaching speed and the leaching completion rate of nickel in the nickel hydrometallurgical system are effectively ensured.
3. According to the invention, the stirring fine mill is simple and convenient to operate, small in occupied area, few in equipment vulnerable parts, easy to maintain, and about 30% higher in ore grinding efficiency than the horizontal ball mill, and about 30% -50% lower in energy consumption. In the invention, the comprehensive energy consumption of the high nickel matte fine grinding system is about 30% -50% lower than that of a general wet superfine pulping system, and the problem of high energy consumption in the high nickel matte superfine grinding process is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of a system architecture of the present invention;
FIG. 2 is a schematic view of the structure of the stirring fine mill of the present invention.
In the figure, 1, a horizontal ball mill, 2, a spiral classifier, 3, a stirring fine mill, 31, a grinding area, 32, a sedimentation area, 33, a stirrer, 34, a classifying wheel, 35, a classifying ring baffle plate and 36, and a stirring container;
4. And 5, a first storage container and a second storage container.
Detailed Description
Various embodiments of the present invention are disclosed in the following drawings, in which details are set forth in the following description for the sake of clarity. However, it should be understood that these physical details should not be used to limit the invention. That is, in some embodiments of the present invention, these physical details are not necessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.
In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the invention solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Referring to fig. 1-2, the high nickel matte fine grinding pulping system comprises a horizontal ball mill 1, a spiral classifier 2 and a stirring fine mill 3, wherein the horizontal ball mill 1 is used for coarse grinding of ore pulp, the stirring fine mill 3 is used for fine grinding of ore pulp, the spiral classifier 2 is arranged on one side of the horizontal ball mill 1, a discharge port of the horizontal ball mill 1 is communicated with a feed inlet of the spiral classifier 2 through a connecting pipe, and a return port of the spiral classifier 2 is communicated with the feed inlet of the horizontal ball mill 1;
A discharge hole of the spiral classifier 2 is communicated with a storage mechanism, and the storage mechanism is connected with a feed inlet at the bottom of the stirring fine mill 3 through a guide pipe;
The storage mechanism comprises a first storage container 4 and a second storage container 5, wherein the first storage container 4 is used for storing ore pulp discharged by the spiral classifier 2, adjusting the ore pulp level in the spiral classifier 2, ensuring the stability of the ore pulp level of the ore grinding system and maintaining the stable feeding effect of the stirring fine mill 3.
The stirring fine mill 3 comprises a stirring container 36, wherein a grinding zone 31 positioned at the lower end and a sedimentation zone 32 positioned at the upper end are formed by a grading ring baffle 35 in the stirring container 36;
the stirrer 33 is arranged in the center of the stirring fine mill 3, the classifying wheel 34 is arranged on the stirrer 33, the classifying wheel 34 is positioned below the classifying ring baffle 35, the diameter of the classifying wheel 34 is larger than the diameter of the inner hole of the classifying ring baffle 35, and a gap of 3 mm-10 mm is arranged on the classifying wheel 34.
Wherein the stirring mill is specific, the stirring mill 3 adopts a low-chromium or medium-chromium steel ball medium with the diameter of 10mm to 30mm and is proportioned according to a proper proportion, so that sufficient energy density can be provided to ensure that the ore discharging granularity of the stirring mill 3, namely-280 meshes, is more than or equal to 90 percent;
The stirring fine mill 3 is provided with a variable frequency control device, the running frequency is 30-50 Hz, the edge linear speed of the stirrer 33 is 4-5 m/s, and the crushing force requirement of materials below 1mm is met.
The second storage container 5 is communicated with the first storage container 4, and the height difference between the discharge hole of the second storage container 5 and the stirring fine mill 3 is larger than 4m, so that ore pulp in the second storage container is conveyed into the stirring fine mill 3 through dead weight, and ore pulp backflow is avoided.
The ball grinding machine has the function of automatically adjusting the water quantity, ensures that the mass concentration of slurry in the cylinder is stable by 40% -50%, ensures that the discharge granularity is stable at-1 mm, and ensures that the high nickel matte slurry has better fluidity.
The ball grinding machine equipment is provided with 60 mm-120 mm low-chromium or medium-chromium steel ball medium, and the materials are proportioned according to proper proportion,
The use method of the high nickel matte fine grinding pulping system comprises the following steps:
s1, inputting coarse-particle high-nickel matte raw materials with the diameter of 1mm to 15mm into a horizontal ball mill 1;
S2, after grinding the coarse particle raw materials by the horizontal ball mill 1, discharging the coarse particle raw materials into the spiral classifier 2 for classification, overflowing ore pulp with the granularity below 1mm from the spiral classifier 2 to the first storage container 4, and returning the ore pulp with the granularity above 1mm into the horizontal ball mill 1 for grinding again by a return port under the drive of a spiral blade of the spiral classifier 2;
s3, conveying the ore pulp in the first storage container 4 to the second storage container 5, and enabling the ore pulp in the second storage container 5 to forcedly flow automatically through gravity to enter a grinding area 31 in the stirring fine mill 3 from a feed inlet at the bottom of the stirring fine mill 3;
S4, the ore pulp in the grinding area 31 of the stirring fine grinder 3 is further crushed by the rotation of the stirrer 33 and matched with the steel ball medium, and is discharged from a sedimentation opening in the sedimentation area 32 under the screening of the classification wheel 34 and the classification ring baffle 35.
The above is merely an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is made in the content of the spirit and principle of the present invention, should be included in the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a high nickel matte fine grinding pulping system, includes horizontal ball mill (1), spiral classifier (2) and stirring fine mill (3), its characterized in that:
The device comprises a horizontal ball mill (1), a stirring fine mill (3), a spiral classifier (2), a storage mechanism, a guide pipe, a stirring fine mill (3) and a stirring fine mill (3), wherein the horizontal ball mill (1) is used for coarsely crushing ore pulp;
the storage mechanism comprises a first storage container (4) and a second storage container (5), wherein the first storage container (4) is used for storing ore pulp discharged by the spiral classifier (2) and adjusting the ore pulp level in the spiral classifier (2), so that the stability of the ore pulp level of the ore grinding system is ensured, and the stable feeding effect of the stirring fine mill (3) is maintained.
2. The fine grinding system for high nickel matte according to claim 1, wherein the stirring fine grinding machine (3) comprises a stirring container (36), and a grinding zone (31) at the lower end and a sedimentation zone (32) at the upper end are formed inside the stirring container (36) through a classification ring baffle (35);
The stirring fine grinding machine is characterized in that a stirrer (33) is arranged in the center of the stirring fine grinding machine (3), a classifying wheel (34) is arranged on the stirrer (33), the classifying wheel (34) is located below the classifying ring baffle (35), and the diameter of the classifying wheel (34) is larger than the diameter of an inner hole of the classifying ring baffle (35).
3. The high nickel matte fine grinding pulping system according to claim 1, wherein the stirring fine grinding machine (3) adopts a low-chromium or medium-chromium steel ball medium with the diameter of 10-30 mm and is proportioned according to a proper proportion, so that sufficient energy density can be provided to ensure that the ore discharge granularity of the stirring fine grinding machine (3) is more than or equal to 90 percent of-280 meshes;
The stirring fine mill (3) is provided with a variable frequency control device, the running frequency is 30-50 Hz, the edge linear speed of the stirrer (33) is 4-5 m/s, and the crushing force requirement of materials below 1mm is met.
4. The fine grinding and pulping system with high nickel matte content according to claim 1, wherein the second storage container (5) is communicated with the first storage container (4), and the height difference between the discharge hole of the second storage container (5) and the stirring fine grinding machine (3) is larger than 4m.
5. A fine grinding system for high nickel matte according to claim 1, characterized in that the classifying wheel (34) is provided with a gap of 3-10 mm.
6. The high nickel matte fine grinding pulping system of claim 1 is characterized in that the horizontal ball mill (1) has the function of automatically adjusting water quantity, so that the mass concentration of slurry in a cylinder is ensured to be stabilized within a range of 40% -50%, the discharge granularity is ensured to be stabilized below-1 mm, and the high nickel matte pulp is ensured to have better fluidity.
7. The high nickel matte fine grinding pulping system according to claim 1, wherein the horizontal ball mill (1) is provided with 60-120 mm low-chromium or medium-chromium steel ball media, and the low-chromium or medium-chromium steel ball media are proportioned according to a proper proportion.
8. The application method of the high nickel matte fine grinding pulping system is characterized by comprising the following steps of:
S1, inputting coarse-grain high nickel matte raw materials with the diameter of 1mm to 15mm into a horizontal ball mill (1);
s2, after grinding the coarse particle raw material by the horizontal ball mill (1), discharging the coarse particle raw material into the spiral classifier (2) for classification, overflowing ore pulp with the granularity of less than 1mm from the spiral classifier (2) to the first storage container (4), and returning the ore pulp with the granularity of more than 1mm into the horizontal ball mill (1) for grinding again by a return port under the driving of a stirrer (33) in the spiral classifier (2);
S3, conveying the ore pulp in the first storage container (4) to the second storage container (5), and enabling the ore pulp in the second storage container (5) to enter a grinding area (31) in the stirring fine mill (3) from a feed inlet at the bottom of the stirring fine mill (3) through gravity forced self-flow;
S4, ore pulp in a grinding area (31) of the stirring fine grinding machine (3) is subjected to rotation of a stirrer (33), the ore pulp is further crushed by being matched with steel ball media, and the ore pulp is discharged from a sedimentation opening in a sedimentation area (32) under the screening of a classification wheel (34) and a classification ring baffle (35).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411846048.4A CN119634002B (en) | 2024-12-16 | 2024-12-16 | A high-nickel matte fine grinding pulping system and its usage method |
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| CN202411846048.4A CN119634002B (en) | 2024-12-16 | 2024-12-16 | A high-nickel matte fine grinding pulping system and its usage method |
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| CN119634002B CN119634002B (en) | 2025-10-31 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080116303A1 (en) * | 2006-11-21 | 2008-05-22 | Volker Jurgens | Method for Improved Agitator Milling of Solid Particles |
| CN114672640A (en) * | 2022-03-15 | 2022-06-28 | 金川镍钴研究设计院有限责任公司 | Process method for extracting alloy from high nickel matte |
| CN116871012A (en) * | 2023-06-26 | 2023-10-13 | 中钢天源安徽智能装备股份有限公司 | A tower mill intermittent stuffy filling grinding system and grinding method |
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- 2024-12-16 CN CN202411846048.4A patent/CN119634002B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080116303A1 (en) * | 2006-11-21 | 2008-05-22 | Volker Jurgens | Method for Improved Agitator Milling of Solid Particles |
| CN114672640A (en) * | 2022-03-15 | 2022-06-28 | 金川镍钴研究设计院有限责任公司 | Process method for extracting alloy from high nickel matte |
| CN116871012A (en) * | 2023-06-26 | 2023-10-13 | 中钢天源安徽智能装备股份有限公司 | A tower mill intermittent stuffy filling grinding system and grinding method |
Non-Patent Citations (1)
| Title |
|---|
| 高明炜等: "细磨和超细磨工艺的最新进展", 国外金属矿选矿, no. 12, 25 December 2006 (2006-12-25) * |
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