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Separation method of nickel-copper mixed concentrate containing platinum-palladium mineral

A technology of mixing concentrate and separation method, applied in the field of separation, can solve the problems of uneconomical smelting, unstable sorting process, large amount of lime, etc.

Inactive Publication Date: 2012-10-24
GUANGZHOU RES INST OF NON FERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this process, from copper-nickel mixed flotation to copper-nickel flotation separation process, the medium changes from acidic to strong alkaline, and there is a shortage of large amount of lime, and under the condition of strong alkali, the secondary slime is easy to produce strong non-selectivity Agglomeration, resulting in an unstable sorting process
At the same time, the nickel grade content in the copper concentrate is higher than 2%, making subsequent smelting uneconomical

Method used

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  • Separation method of nickel-copper mixed concentrate containing platinum-palladium mineral
  • Separation method of nickel-copper mixed concentrate containing platinum-palladium mineral

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0016] Table 1 embodiment 1~6 medicament dosage (gram / ton · containing platinum palladium mineral nickel-copper mixed concentrate)

[0017]

Embodiment 1

[0019] Add 800 g / t of activated carbon to the nickel-copper mixed concentrate containing platinum-palladium minerals, grind to -0.043mm, accounting for 85%, and thicken dehydration; add water until the pulp concentration is 35%; add pulp regulator lime to adjust the pH value of the pulp to 12 , operate according to the amount of reagents listed in Table 1 to obtain copper concentrate and nickel concentrate; Palladium 12.51g / t, nickel grade of nickel concentrate is 3.21%, nickel recovery rate is 96.26%, copper content is 1.14%, platinum content is 10.32g / t, platinum recovery rate is 86.18%, palladium content is 23.72g / t, palladium recovery rate 94.45%.

Embodiment 2

[0021] Add 1000 g / t of activated carbon to the nickel-copper mixed concentrate containing platinum-palladium minerals, grind the ore to -0.043mm, account for 90%, and dehydrate it densely; add water to the pulp concentration of 36%; add pulp regulator lime to adjust the pH value of the pulp to 11 , operate according to the amount of reagents listed in Table 1, and obtain copper concentrate and nickel concentrate; Palladium 11.90g / t, nickel grade of nickel concentrate is 3.21%, nickel recovery rate is 96.39%, copper content is 1.07%, platinum content is 10.44g / t, platinum recovery rate is 87.23%, palladium content is 23.79g / t, palladium recovery rate 94.72%.

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Abstract

The invention relates to a separation method of nickel-copper mixed concentrates containing platinum-palladium minerals. The separation method is characterized by comprising the following steps of: adding active carbon to the nickel-copper mixed concentrates containing the platinum-palladium minerals for ore grinding; mixing size; and adding an ore pulp regulating agent, an inhibiting agent, a collecting agent and a foaming agent to carry out nickel-copper flotation separation to obtain copper concentrates and nickel concentrates. The copper concentrates obtained through the separation method contain copper with a grade more than 20 percent and nickel with the grade lower than 2 percent; the nickel concentrates contain the nickel with the grade more than 3 percent, and the recovery rate of the nickel is more than 95 percent; platinum-palladium elements are gathered into the nickel concentrates, the recovery rate of platinum is more than 86 percent, and the recovery rate of palladium is more than 93 percent. The separation method has the advantages of simple process, good separation effect, high sorting index and economic rationality.

Description

technical field [0001] The invention relates to a separation method, in particular to a separation method of platinum-palladium-containing mineral nickel-copper mixed concentrate. Background technique [0002] In the platinum-palladium-copper-nickel sulfide ores, purple sulfur nickelite and chalcopyrite are generally closely symbiotic, and some exist in the form of aggregates, with fine and uneven embedded particle size, complex mineral composition, and easy-floating veins Stone minerals and other characteristics. It is difficult to obtain qualified copper concentrate with a nickel grade of less than 2% by directly separating nickel minerals and copper minerals by flotation, so it can only be produced by producing copper-nickel mixed concentrate containing copper, nickel, platinum, palladium and other metal elements. The ore is pyro-smelted into high nickel matte, and then copper-nickel flotation separation is carried out to realize the separation of copper and nickel, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03B1/00B03B1/04
Inventor 邱显扬胡真王成行李汉文叶富兴汤玉和何晓娟汪泰宋宝旭邹坚坚
Owner GUANGZHOU RES INST OF NON FERROUS METALS
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