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Flotation method for copper-containing nickel sulfide ore

A nickel sulfide ore roughing technology, which is applied in flotation, solid separation, etc., can solve the problems of reducing the nickel recovery rate and the buoyancy of nickel minerals, and achieve the improvement of nickel recovery rate, copper recovery rate, and prevention of oxidation. Effect

Inactive Publication Date: 2012-04-25
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual process of flotation of copper-containing nickel sulfide ore, collectors and foaming agents of conventional copper sulfide minerals such as butyl xanthate and No. 2 oil are usually used in flotation. If the process is affected, a certain amount of slime dispersant such as sodium silicate is also added to the flotation machine for stirring and aerated flotation. No matter what type of flotation machine, the function of stirring is to stir the pulp evenly for flotation The interaction between agents, the role of aeration is to form bubbles of moderate size to carry useful minerals out to form mineralized foam (foam concentrate), because copper sulfide ore is not easily oxidized in an aerobic system, and nickel-containing sulfide minerals such as magnetic Pyrite and pentlandite are easily oxidized and hydrophilic. In actual production operations, the flotation separation of copper sulfide minerals is often achieved by strong aeration stirring or excessive aeration. This method is used for nickel ore flotation. It will inevitably lead to a decrease in the buoyancy of nickel minerals and a reduction in the recovery rate of nickel

Method used

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  • Flotation method for copper-containing nickel sulfide ore
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  • Flotation method for copper-containing nickel sulfide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: this copper-containing nickel sulfide ore flotation method, the specific operation steps are as follows:

[0026] The properties of copper-containing nickel sulfide ore raw samples are as follows: Cu 0.17% (mass percentage, the same below), oxidation rate 8.96%; Ni 0.22%, oxidation rate 25%; CaO 2.57%; MgO 30.90%; Al 2 o 3 2.16%; SiO 2 35.93%; Fe 2 o 3 6.63%; Pt 1.7 g / t, Pd 2.32 g / t.

[0027] The first group of tests is to wet-grind the copper-containing nickel sulfide ore to -200 mesh weight ratio accounting for 90%, and add 500 g / ton of sodium sulfite during the grinding process, and add it when stirring and slurrying before roughing and sweeping. The total amount of sodium silicate is 1500 g / ton, and the total amount of copper sulfate is 500 g / ton, and the collector combined with conventional butyl xanthate and butyl ammonium black drug (butyl xanthate: butyl ammonium black drug=4:1 ) with a total amount of 200 g / ton and foaming agent No. 2 ...

Embodiment 2

[0033] Embodiment 2: this copper-containing nickel sulfide ore flotation method, the specific operation steps are as follows:

[0034] The properties of copper-containing nickel sulfide ore raw samples are as follows: Cu 0.38% (mass percentage, the same below), oxidation rate 15.12%; Ni 0.58%, oxidation rate 12%; CaO 9.15%; MgO 12.39%; Al 2 o 3 8.69%; SiO 2 43%; Fe 2 o 3 6.63%; Pt 2.13g / t, Pd 2.39g / t.

[0035]The first group of tests is to wet-grind the above-mentioned copper-containing nickel sulfide ore to -200 mesh weight ratio accounting for 80%, and add 500 g / ton of sodium sulfite during the grinding process, and add it when stirring and slurrying before roughing and sweeping The total amount of sodium silicate is 1200 g / ton, and the total amount of activator ammonium sulfate is 500 g / ton, and the collector of conventional butyl xanthate and butyl ammonium black drug (butyl xanthate: butyl ammonium black drug=4 : 1) Flotation with a total amount of 150 g / ton a...

Embodiment 3

[0040] Embodiment 3: this copper-containing nickel sulfide ore flotation method, the specific operation steps are as follows:

[0041] The properties of copper-containing nickel sulfide ore raw samples are as follows: Cu 0.25% (mass percentage, the same below), oxidation rate 10.21%; Ni 0.35%, oxidation rate 20%; CaO 5.57%; MgO 21.90%; Al 2 o 3 4.16%; SiO 2 39.93%; Fe 2 o 3 6.63%; Pt 2.1 g / t, Pd 2.34 g / t.

[0042] The first group of tests is to wet-grind the above-mentioned copper-containing nickel sulfide ore to -200 mesh, accounting for 85% by weight, and add 750 g / ton of sodium metasulfite during the grinding process. Add a total of 1000 g / ton of sodium hexametaphosphate, then add an equal weight of activator copper sulfate 750 g / ton, a collector combined with conventional butylxanthate and butylammonium black medicine (butylxanthate: butylammonium black Drug = 4: 1) The total amount is 180 g / ton, and the total amount of foaming agent No. 2 oil is 60 g / ton for flota...

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Abstract

The invention discloses a flotation method for a copper-containing nickel sulfide ore. In order to solve the problem that nickel-containing sulfide is easily oxidized in the flotation process, the invention provides a flotation method which can ensure that the nickel-containing sulfide is not oxidized and can make a part of oxidized nickel ore activated, namely sulfite serving as an antioxidant of nickel sulfide is added during grinding operation of the copper-containing nickel sulfide ore, and sulfate serving as an activating agent with the same weight as the sulfite is added before flotation operation, so that the using amount of the antioxidant is sufficient, the requirement of preventing or delaying the nickel sulfide from being oxidized is met, and the nickel-containing sulfide such as pentlandite and the like is activated. Compared with the conventional flotation method in which the antioxidant is not added, the anti-oxidation method has the advantages that: the grade of a copper-nickel mixed concentrate can be improved by about 1 percent, the recovery rate of copper can be improved by 0 to 2 percent, and the recovery rate of nickel can be improved by 4 to 6 percent.

Description

technical field [0001] The invention relates to a flotation method of copper-containing nickel sulfide ore, which belongs to the field of ore dressing. Background technique [0002] The main characteristic of my country's nickel ore resources is that the distribution of reserves is highly concentrated. The reserves of the Jinchuan nickel mine in Gansu alone account for 63.9% of the country's total reserves. 12.2% of the total reserves. my country's nickel ore is mainly copper-nickel sulfide ore, accounting for 86% of the country's total reserves, followed by laterite nickel ore, accounting for 9.6% of the country's total reserves. About 50 kinds of nickel-containing minerals are known, the most important nickel-containing sulfides are pentlandite, purple sulfur nickel ore, red arsenic nickel ore, etc., and a considerable part of nickel occurs in pyrrhotite in the same quality and isomorphism Among them, nickel sulfide deposits generally contain copper, and are often called ...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03B1/00B03D1/004B03D101/02B03D101/04
Inventor 刘四清刘方舟童雄宋宝旭
Owner KUNMING UNIV OF SCI & TECH
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