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A crushing and grinding process for processing nickel-copper sulfide ore

An ore, nickel-copper technology, applied in the field of grinding process for nickel-copper sulfide ore processing, can solve the problems of large number of equipment, impact on personnel health, and high production costs

Active Publication Date: 2020-12-11
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 2. The number of equipment is large, the management is difficult, the energy consumption is large, and the production cost is high
[0009] 3. In the crushing stage, a large amount of dust is generated during the transportation, crushing and screening of ore, which has a great impact on the health of personnel

Method used

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  • A crushing and grinding process for processing nickel-copper sulfide ore
  • A crushing and grinding process for processing nickel-copper sulfide ore
  • A crushing and grinding process for processing nickel-copper sulfide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The ore feeding rate is 460 tons / hour, the ore feeding particle size is 100-250 mm, accounting for 30%, the nickel grade of the ore is 0.85%, and the Platinum hardness of the ore is 12.5.

[0033] Step (1): First, the nickel-copper sulfide ore with the above particle size and hardness is fed into the semi-autogenous mill for grinding with a belt conveyor. The grinding power index is 17.65 Kwh / t, and the medium filling rate is 15%. The water supply pressure is 0.45Mpa. Output semi-autogenous mill discharge ore, the semi-autogenous mill discharge ore is the pulp with a weight percentage concentration of 70%;

[0034] Step (2): The semi-autogenous mill in step (1) is fed into the wet sieving machine for sieving. On the sieve are hard stones that are difficult to grind, and on the sieve are fine-grained products. Among the fine-grained products Ore particles with particle size ≤ 6mm accounted for 80%;

[0035] Step (3): Feed the cobblestone (amount on the sieve) in step (...

Embodiment 2

[0043] The ore feeding rate is 460 tons / hour, the ore feeding particle size is 100-250 mm, accounting for 25%, the nickel grade of the ore is 0.78%, and the Platinum hardness of the ore is 12.

[0044] Step (1): First, the nickel-copper sulfide ore with the above particle size and hardness is fed into the semi-autogenous mill for grinding with a belt conveyor. The grinding power index is 16.7 Kwh / t, and the medium filling rate is 12%. The water supply pressure is 0.43Mpa. Output semi-autogenous mill discharge ore, the semi-autogenous mill discharge ore is a slurry with a concentration of 68% by weight;

[0045] Step (2): The semi-autogenous mill in step (1) is fed into the wet sieving machine for sieving. On the sieve are hard stones that are difficult to grind, and on the sieve are fine-grained products. Among the fine-grained products Ore particles with particle size ≤ 6mm accounted for 85%;

[0046]Step (3): Feed the cobblestone (amount on the sieve) in step (2) into the ...

Embodiment 3

[0054] The ore feeding rate is 460 tons / hour, the ore feeding particle size is 100-250 mm, accounting for 20%, the nickel grade of the ore is 0.65%, and the Platinum hardness of the ore is 11.7.

[0055] Step (1): First, the nickel-copper sulfide ore with the above particle size and hardness is fed into the semi-autogenous mill for grinding with a belt conveyor. The grinding power index is 17.65 Kwh / t, and the medium filling rate is 10%. The water supply pressure is 0.41Mpa. Output semi-autogenous mill discharge ore, the semi-autogenous mill discharge ore is a slurry with a concentration of 65% by weight;

[0056] Step (2): The semi-autogenous mill in step (1) is fed into the wet sieving machine for sieving. On the sieve are hard stones that are difficult to grind, and on the sieve are fine-grained products. Among the fine-grained products Ore particles with particle size ≤ 6mm accounted for 90%;

[0057] Step (3): Feed the cobblestone (the amount on the sieve) in step (2) i...

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Abstract

The invention discloses a crushing and grinding process for treating nickel copper sulfide ore, and belongs to the technical field of metal mineral processing. The crushing and grinding process comprises the specific process steps of semi-autogenous grinding, wet-type screening, insensate stone crushing, cyclone classification and ball-milling classification. According to the crushing and grindingprocess for treating the nickel copper sulfide ore, semi-autogenous grinding equipment is used for crushing, an original crushing way of ore is changed, the production process is simplified, comparedwith a conventional crushing and grinding process of nickel copper sulfide ore, the particle size of grinding products is stable, particle grade distribution is more reasonable, excessive crushing ofmetal minerals is reduced, pollution of iron to useful minerals is reduced, more powerful conditions for flotation are created, and the content of the particle grade being -74 to +10 [mu]m suitable for enrichment and recovery of the flotation process is increased by 14%, while the content of the particle grade being -10 [mu]m not suitable for flotation process treatment is decreased by about 5%;the number of equipment is less, and the production cost is low; and back-and-forth transport of the ore in a production link is reduced, dust pollution to the working environment of staff is avoided,and the risk of occupational disease of personnel is reduced.

Description

technical field [0001] The invention relates to the technical field of metal mineral processing, in particular to a new ore crushing and grinding process, in particular to a crushing and grinding process for processing nickel-copper sulfide ores. Background technique [0002] The purpose of mineral processing is to maximize the enrichment and recovery of useful minerals from primary ores. In the traditional mineral processing process, the main crushing and grinding process is: crushing and screening + grinding and grading. Therefore, the crushing degree of ore directly affects the technical and economic indicators of beneficiation. If the particle size is too coarse, the target mineral cannot be fully dissociated from the gangue mineral, and cannot meet the technical requirements of subsequent separation; if the crushed particle size is too fine, the target mineral is too crushed, and enters the separation operation together with the gangue mineral , so that the target min...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C21/00B02C23/08
CPCB02C21/00B02C23/08
Inventor 崔忠远王玛斗张玮昌江敏王虹陈伟高泽东李建博马红
Owner JINCHUAN GROUP LIMITED
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