Process for separating copper from waste micro/fine-particle zinc tailing

A technology for fine particles and tailings, which can be used in flotation, solid separation, etc., and can solve problems such as waste.

Active Publication Date: 2012-06-27
ZIJIN MINING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the advancement of technology, its potential value will far exceed the value of metal ele

Method used

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  • Process for separating copper from waste micro/fine-particle zinc tailing
  • Process for separating copper from waste micro/fine-particle zinc tailing
  • Process for separating copper from waste micro/fine-particle zinc tailing

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Example 1: According to the dry weight of zinc tailings per ton, add 4kg / t of industrial lime to the zinc-selected tailings to adjust the pH value to about 10, and add 2.0kg / t of zinc sulfate+2.0kg / t of sodium sulfite at the same time, and stir 3 minutes, then add 100g / t of butyl xanthate + 50g / t of ethiazide + 100g / t of Z-200 and 25g / t of foaming agent pinitol oil at the same time, stir for 2 minutes, and carry out flotation Selection; at the same time, add butyl xanthate dosage 50g / t+ ethylthiazide dosage 25g / t+Z-200 dosage 50g / t and foaming agent terpineol oil dosage 15g / t, stir for 2 minutes, and carry out the first sweeping ; Do not add any chemicals in the second sweeping; use a ball mill to finely grind the rough concentrate to a fineness of -0.02mm 80%, add new water to adjust the slurry to a pulp concentration of 10%, add water glass in an amount of 1kg / t, and stir For 2 minutes, add 1 kg / t of zinc sulfate + 1 kg / t of sodium sulfite at the same time, stir for 2...

Embodiment 2

[0018] Embodiment 2: Embodiment 2 (optimum condition medicament dosage upper limit) has only individual process parameter and medicament dosage different from embodiment 1 (optimum condition medicament dosage lower limit), and other conditions are substantially the same as both of the implementation process. According to the dry weight of each ton of zinc tailings, add 4.5kg / t of industrial lime to the zinc-selected tailings to adjust the pH value to about 11. At the same time, add 2.5kg / t of zinc sulfate + 2.5kg / t of sodium sulfite, and stir for 3 minutes. Then add butyl xanthate dosage 120g / t+ ethiazide dosage 60g / t+Z-200 dosage 120g / t and foaming agent terpineol oil dosage 30g / t simultaneously, stir 2 minutes, carry out flotation rough selection; Add 60g / t of butyl xanthate + 30g / t of ethionate + 60g / t of Z-200 and 15g / t of foaming agent terpineol oil, stir for 2 minutes, and perform the first sweep; Do not add any chemical agent for the second sweeping; use a ball mill to ...

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Abstract

The invention discloses a process for separating copper from waste micro/fine-particle zinc tailing and adopts a technical scheme based on the flotation rate characteristics of micro/fine-particle copper minerals. The process comprises the following steps: firstly separating effectively-activated micro/fine-particle copper minerals by using a high-efficiency floatation agent in the floatation rough-separation stage, and enhancing recovery of liberated copper minerals and copper mineral combinations; and then grinding the crude concentrate until the content of 0.02 mm particles is 80 to 90% todestroy the copper mineral combinations and increase the degree of liberation of the copper mineral monomers; and finally removing impurities and recovering copper minerals by concentration for 2 to 3 times under the conditions of low concentration, high inhibitor consumption and high dispersant, to obtain qualified copper concentrate.

Description

1. Technical field [0001] The invention relates to a tailings re-election process, in particular to a flotation process for reclaiming fine grains of refractory copper from zinc-selected tailings separated from copper and zinc. 2. Background technology [0002] my country is a developing country with poor per capita resources. 80% of my country's mineral resources are associated mines. Due to the late start of my country's mining industry and unbalanced technological development, there is a large gap in dressing and smelting technology in different periods, and a large number of valuable resources remain in the tailings. middle. With the advancement of technology, its potential value will far exceed the value of metal elements. If these tailings resources cannot be comprehensively recycled, it will cause huge waste. The flotation and separation of copper-zinc-sulfur polymetallic ores has always been a difficult problem in the mineral processing industry, especially the coppe...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/018B03B1/00B03D101/02B03D103/02
Inventor 李广鲁军巫銮东阮仁满
Owner ZIJIN MINING GROUP
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