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Combined inhibitor for copper-nickel/copper-cobalt separation and application thereof

A combination inhibitor, copper and cobalt technology, applied in the direction of solid separation, flotation, etc., can solve the problems of unfriendly environment, high pH of ore pulp, large amount of calcium oxide, etc.

Active Publication Date: 2021-08-06
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a combination inhibitor for copper-nickel / copper-cobalt separation and its application, to solve the problem of using calcium oxide as the copper-nickel / copper-cobalt separation inhibitor in the prior art. , not friendly enough to the environment, etc.

Method used

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  • Combined inhibitor for copper-nickel/copper-cobalt separation and application thereof
  • Combined inhibitor for copper-nickel/copper-cobalt separation and application thereof
  • Combined inhibitor for copper-nickel/copper-cobalt separation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A copper-nickel mixed concentrate contains 6.93% copper and 15.59% nickel.

[0035] Add calcium oxide 4000g / (t mixed concentrate) to the mixed concentrate pulp, adjust the pH value to about 11.6, add sodium percarbonate 4000g / (t mixed concentrate), carboxymethyl cellulose sodium 400g / (t mixed Concentrate), stirred for 20min, then added thiocarbamate 40g / (t mixed concentrate), stirred for 3min, and then carried out copper-nickel separation and roughing to obtain copper rough concentrate and nickel rough concentrate. The copper rough concentrate is refined twice to obtain the final copper concentrate. Among them, copper beneficiation I added calcium oxide 500g / (t mixed concentrate), sodium percarbonate 400g / (t mixed concentrate), carboxymethyl cellulose sodium 40g / (t mixed concentrate); copper beneficiation II was Blank Featured. The nickel rough concentrate is subjected to two times of copper scavenging to obtain the final nickel concentrate. Among them, copper scaven...

Embodiment 2

[0037] The difference from Example 1 is that the mixed concentrate contains 8.87% copper and 10.20% nickel. The amount of calcium oxide added to the mixed concentrate pulp is 4500g / t, the pH value is adjusted to pH 11.8, the amount of sodium percarbonate is 3500g / t, and the amount of sodium carboxymethylcellulose is 350g / t.

Embodiment 3

[0039] The difference from Example 1 is that the mixed concentrate contains 4.59% copper and 5.45% nickel. The amount of calcium oxide added to the mixed concentrate pulp is 3000g / t, the pH value is adjusted to pH 11.2, the amount of sodium percarbonate is 2000g / t, and the amount of sodium carboxymethylcellulose is 200g / t.

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Abstract

The invention discloses a combined inhibitor for copper-nickel / copper-cobalt separation and application of the combined inhibitor. The combined inhibitor comprises calcium oxide, sodium percarbonate and sodium carboxymethyl cellulose, and the ratio of the sodium percarbonate to the sodium carboxymethyl cellulose is (10-15): 1. The application of the combined inhibitor comprises the following steps: before copper-nickel / copper-cobalt separation and roughing, adding the calcium oxide into ore pulp, and adjusting the pH value of the ore pulp to 11.0-12.0; and adding the sodium percarbonate and the sodium carboxymethyl cellulose according to the ratio, and stirring. According to the method, high-efficiency separation of copper-nickel / copper-cobalt can be realized under low alkalinity; and the use amount of calcium oxide can be greatly reduced, and sodium percarbonate and sodium carboxymethyl cellulose in the combined inhibitor are environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of beneficiation technology, in particular to a combined inhibitor for copper-nickel / copper-cobalt separation that can achieve low alkalinity and has a cleaning effect and an application thereof. Background technique [0002] The main sources of nickel are pentlandite, purple sulfur nickel ore and laterite nickel ore, etc., and about 60% of the world's metallic nickel comes from copper-nickel sulfide deposits. The development and utilization of copper-nickel sulfide ore is facing the problem of copper-nickel separation. There are two main methods for copper-nickel separation of copper-nickel sulfide ore: one is to obtain copper-nickel mixed concentrate by flotation first, then smelt it to form high nickel matte, and then grind and flotation to realize copper-nickel separation; the other is direct flotation Separation to obtain copper concentrate and nickel concentrate. Since copper sulfide ore has better b...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/06B03D101/02B03D103/02
CPCB03D1/018B03D2201/06B03D2201/02B03D2203/02Y02P10/20
Inventor 刘志国于传兵王传龙邓朝安康金星王亚运
Owner CHINA ENFI ENGINEERING CORPORATION