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High copper-to-nickel-ratio mineral flotation method

A technology of copper-nickel ore and beneficiation method, applied in flotation, chemical instruments and methods, wet separation, etc., can solve the problem of low copper concentrate grade and recovery rate, recovery rate less than 30%, copper recovery rate is not high, etc. problems, to achieve the effect of increasing the effective utilization rate, improving the grade of copper concentrate, and improving the pharmaceutical process

Active Publication Date: 2017-10-10
JINCHUAN GROUP LIMITED
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, its floatability is very poor in conventional flotation, and the recovery rate is less than 30%, which is also one of the reasons for the low recovery rate of copper in the flotation process.
In addition, copper-nickel ore is mainly selected for nickel, and the buoyancy of copper ore is similar to that of nickel ore. Copper ore is recovered during the process of nickel ore selection. Therefore, copper in the copper-nickel mixed concentrate produced Concentrate grades and recoveries have been low

Method used

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  • High copper-to-nickel-ratio mineral flotation method

Examples

Experimental program
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Effect test

example 1

[0043] Example 1: Taking the raw ore containing 1.32% copper, 1.48% nickel, and a copper-nickel ratio of 0.89 as an example, go through the following beneficiation methods:

[0044] A raw material pretreatment

[0045] A.1 Crushing and screening: crush the copper-nickel ore with a high copper-nickel ratio, and obtain a finely crushed product with a particle size of -10 mm through inspection and screening;

[0046] A.2 Grinding and classification

[0047] A.2.1 One-stage grinding: The finely crushed product obtained in step A.1 is subjected to one-stage grinding, and two-stage closed-circuit grinding operations are performed to obtain pulp A1 with a -200 mesh content > 65%, which is used as a raw material for one-stage flotation;

[0048] A.3 Dosing, mixing and stirring

[0049] A.3.1 Put the primary flotation raw material A1 obtained in step A.2.1 into the stirring tank, add ammonium sulfate 800g / t to make the pH value of the pulp reach 8.5; add water to adjust the concentra...

example 2

[0066] Example 2: The raw ore contains 1.136% copper, 1.316% nickel, and a copper-nickel ratio of 0.86, through the following beneficiation methods:

[0067] A raw material pretreatment

[0068] A.1 Crushing and screening: crush the copper-nickel ore with a high copper-nickel ratio, and obtain a finely crushed product with a particle size of -10 mm through inspection and screening;

[0069] A.2 Grinding and classification

[0070] A.2.1 One-stage grinding: The finely crushed product obtained in step A.1 is subjected to one-stage grinding, and two-stage closed-circuit grinding operations are performed to obtain pulp A1 with a -200 mesh content > 65%, which is used as a raw material for one-stage flotation;

[0071] A.3 Dosing, mixing and stirring

[0072] A.3.1 Put the primary flotation raw material A1 obtained in step A.2.1 into the stirring tank, add ammonium sulfate 1000g / t, and make the pH value of the pulp reach 9.0; add water to adjust the concentration of the pulp to 3...

example 3

[0089] Example 3: The raw ore contains 1.02% copper, 1.29% nickel, and a copper-nickel ratio of 0.79, through the following beneficiation methods:

[0090] A raw material pretreatment

[0091] A.1 Crushing and screening: crush the copper-nickel ore with a high copper-nickel ratio, and obtain a finely crushed product with a particle size of -10 mm through inspection and screening;

[0092] A.2 Grinding and classification

[0093] A.2.1 One-stage grinding: The finely crushed product obtained in step A.1 is subjected to one-stage grinding, and two-stage closed-circuit grinding operations are performed to obtain pulp A1 with a -200 mesh content > 65%, which is used as a raw material for one-stage flotation;

[0094] A.3 Dosing, mixing and stirring

[0095] A.3.1 Put the primary flotation raw material A1 obtained in step A.2.1 into the stirring tank, add ammonium sulfate 900g / t to make the pH value of the pulp reach 8.7; add water to adjust the concentration of the pulp to 35%, a...

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Abstract

The invention discloses a high copper-to-nickel-ratio mineral flotation method. The high copper-to-nickel-ratio mineral flotation method comprises the following steps of A, pretreatment of raw materials, and A.2, mineral grinding for grading; A.2.1, primary mineral grinding; A.3, powder adding, slurry mixing and stirring; B.1, the primary rough concentration process; B.2, primary first-time concentrating; B.3, primary second-time concentrating; C, the secondary rough concentration process, and C.1, secondary mineral grinding; C.3, the secondary rough concentration process; C.4, secondary one-time concentrating; C.5, secondary second-time concentrating; C.6, secondary one-time scavenging; C.7, secondary second-time scavenging; and D.1, graded regrinding of part products in the secondary process. According to the high copper-to-nickel-ratio mineral flotation method, the mineral processing process is adopted, the fine grinding and concentrating operation efficiency is strengthened, and the requirement for quick selection and early collecting of copper nickel is met; after implementation, the copper recovering rate of high copper-to-nickel-ratio sulfide copper-nickel mineral is improved by about 1% or more, the copper concentrate grade is improved by about 0.5%, and the copper metal output amount is obviously improved. What's more, an economical and applicable beneficiation method is provided for sorting same-class joined and accompanied mineral, and the high application and popularization value is achieved.

Description

technical field [0001] The invention belongs to the technical field of mineral processing and relates to a flotation method for minerals with a high copper-nickel ratio. Background technique [0002] In recent years, with the deep mining of copper-nickel ore in mines, the ratio of copper and nickel content has changed, the copper content has increased, and the copper-nickel ratio has been increased from the original 0.7 to about 0.8. The ore is called a high copper-nickel ratio mineral. Nickel mainly exists in the form of pentlandite, and copper mainly exists in the form of chalcopyrite, followed by chalcopyrite, chalcopyrite and other mineral forms. In addition to nickel-copper sulfide, there are more iron sulfide minerals distributed in the ore, such as pyrrhotite and trace pyrite. [0003] From the analysis of process mineralogy, because the chalcopyrite and chalcopyrite in the ore are much finer than the pentlandite, a part of the chalcopyrite in the gangue minerals is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D1/002B03B1/00B03B7/00B03D101/02B03D103/02
CPCB03B1/00B03B7/00B03D1/002B03D1/012B03D2201/007B03D2201/02B03D2203/02
Inventor 张明李金智崔忠远李正录甄继峰刘钊朱砚
Owner JINCHUAN GROUP LIMITED
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