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Combined inhibitor used for flotation of low-grade nickel ore with high content of sliding magnesium rock

A low-grade nickel ore, combined inhibitor technology, applied in flotation, solid separation and other directions, can solve the problems of complex process, low flotation recovery rate, affecting nickel flotation index and metal recovery rate, etc., and achieve high recovery rate , the effect of effective flotation

Inactive Publication Date: 2012-10-10
陕西煎茶岭镍业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Low-grade nickel ore is generally difficult to select, with complex process and low flotation recovery rate; especially low-grade nickel ore with high content of talcite, gangue minerals such as talc and serpentine in the ore have good buoyancy and fine The ore nickel grade is 3.5%-4.5%, and the nickel recovery rate is 68%-75%, which seriously affects the flotation index and metal recovery rate of nickel

Method used

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  • Combined inhibitor used for flotation of low-grade nickel ore with high content of sliding magnesium rock

Examples

Experimental program
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Effect test

Embodiment 1

[0043] According to the combination inhibitor prepared in the following ratio, the dosage of each component per ton of raw ore is: sodium hexametaphosphate: 500g / t ore, sodium carboxymethylcellulose: 700g / t ore, sodium carbonate: 300g / t ore, sulfuric acid Amine: 360g / t ore, copper sulfate: 300g / t ore, xanthate: 380g / t ore, MIBC: 150g / t ore; first prepare sodium hexametaphosphate and sodium carboxymethylcellulose into an aqueous solution, in which hexametaphosphate The mass concentration of sodium phosphate is 5%.

[0044] First, sodium carboxymethyl cellulose and sodium hexametaphosphate need to be formulated into an aqueous solution, which is added to the pulp in proportion and stirred for 5 minutes, then sodium carbonate, ammonium sulfate, and copper sulfate are added in turn in proportion to stir for 5 minutes, and then amyl Xanthate and MIBC are stirred for 3 to 5 minutes and then enter the flotation machine for flotation.

[0045] Each component is added to the pulp and ...

Embodiment 2

[0047] Flotation process is identical with embodiment 1, and its difference is the difference of the addition amount of combined inhibitor, and after each component is formulated into working liquid, then joins in the ore pulp and carries out flotation after fully stirring:

[0048]The amount of each component per ton of raw ore is: sodium carboxymethyl cellulose: 780g / t ore, sodium hexametaphosphate: 600g / t ore, sodium carbonate: 350g / t ore, ammonium sulfate: 300g / t ore, copper sulfate : 200g / t ore, xanthate: 280g / t ore, MIBC: 100g / t ore; the mass concentration of sodium hexametaphosphate in the working fluid is 4.5%.

[0049] Each component is added to the pulp and enters the flotation machine, according to figure 1 The flotation process shown in the figure; flotation of nickel ore with a content of 49.64% stalbeite and a nickel grade of 0.43% in the raw ore, resulting in a concentrate with a nickel grade of 5.1% and a nickel recovery rate of 76.2%.

Embodiment 3

[0051] Flotation process is identical with embodiment 1, and its difference is the difference of the addition of combination depressant:

[0052] The dosage of each component per ton of raw ore is: sodium carboxymethyl cellulose: 800g / t ore, sodium hexametaphosphate: 650g / t ore, sodium carbonate 400g / t ore, ammonium sulfate: 380g / t ore, copper sulfate: 260g / t ore, xanthate: 300g / t ore, MIBC: 120g / t ore.

[0053] Each component is added to the pulp and enters the flotation machine, according to figure 1 The flotation process shown in the figure adopts the flotation process of secondary roughing, secondary sweeping, and secondary beneficiation; flotation is carried out on the nickel ore with a content of 49.64% stalciteite and a nickel grade of 0.53% in the original ore, and the result is obtained The concentrate nickel grade was 5.6%, and the nickel recovery rate was 78.8%.

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Abstract

The invention discloses a combined inhibitor used for flotation of low-grade nickel ore with high content of sliding magnesium rock. The combined inhibitor comprises carboxymethylcellulose salt, hexametaphosphate, a flotation regulator, a collecting agent, an activating agent and a foaming agent, wherein the mass ratio of carboxymethylcellulose to hexametaphosphate is equal to 1:(0.6-1); the carboxymethylcellulose and the hexametaphosphate are selected as the main components for the flotation for restraining interference ores; the main components are matched with the flotation regulator, the collecting agent, the activating agent and the foaming agent; and after a working solution is prepared, the interferences of easily floating gangue ores, such as soapstone, serpentine, and carbonate, to the flotation of the nickel ore are restrained. A use effect shows that the 5.0%-6.0% nickel concentrate grade is obtained after the flotation working solution is used for selectively floating the raw ore with 0.40%-0.60% nickel grade, and the recovery rate of nickel is 75%-80%, so that the flotation for the low-grade nickel ore with high content of sliding magnesium rock is realized, the concentration ratio of concentrates is more than 10 and the recovery rate is high.

Description

technical field [0001] The invention belongs to the technical field of screening low-grade nickel sulfide ore, and relates to a combined inhibitor used for flotation of high-content talcite-type low-grade nickel ore. Background technique [0002] Nickel resources include nickel sulfide ore, laterite nickel ore and nickel oxide ore and seabed manganese nodules. At present, nickel sulfide ore is mainly mined in the world. Due to the decrease of high-grade nickel ore, low-grade nickel sulfide ore has also attracted the attention of various countries. [0003] The countries in the world that process a large number of low-grade nickel sulfide ores are mainly Russia and Australia. At present, the world-recognized most advanced nickel beneficiation is the Manteken concentrator in Australia. The ore beneficiation index is 0.70% raw ore, and the recovery rate is about 72%. Russia's Rorilsk Nickel Company also processes a large amount of low-grade nickel ore, with a nickel grade of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D1/004B03D1/006B03B1/04B03D101/06B03D101/02B03D101/04B03D103/02
Inventor 魏晔邱文琴彭先淦李明博
Owner 陕西煎茶岭镍业有限公司
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