Flotation method for zinc-copper sulphide ore

A copper-zinc sulfide roughing technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of index fluctuation, zinc loss, etc. Effect

Active Publication Date: 2017-12-01
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ultimately leading to index fluctuations a...

Method used

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  • Flotation method for zinc-copper sulphide ore
  • Flotation method for zinc-copper sulphide ore
  • Flotation method for zinc-copper sulphide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) The 2.5%-4.5% zinc-containing copper-zinc sulfide ore is preferentially selected for copper, and copper tailings are left after copper selection;

[0029] 2) Add activator X-43, collector, and foaming agent 2# oil to the copper tailings described in step 1), and add activator X-43 according to the amount of 100g / t-500g / t per ton of raw ore t g, the amount of collector is 10g / t-30g / t, the amount of foaming agent 2# oil is 0g / t-30g / t, and the collector is composed of ethyl xanthate, 206 xanthate and butyl ammonium black The medicine is formulated according to the ratio of (5-12): (8-15): (1-5). In this embodiment, the consumption of activator X-43 is 100g / t, the consumption of collector is 10g / t, the consumption of foaming agent 2# oil is 2g / t, ethyl xanthate and 206 xanthate in collector Prepare with butylammonium black medicine in a ratio of 5:8:1. Then stir and adjust the thickness of the foam layer, and after obtaining a stable foam layer, perform rapid roughing ...

Embodiment 2

[0038] The raw ore is still zinc-containing 2.5%-4.5% copper-zinc sulfide ore, and with respect to embodiment 1, change process parameters and agent parameters and carry out process test, specifically as follows:

[0039] In step 2), the consumption of activator X-43 is 300g / t, and the consumption of collector is 20g / t, and foaming agent 2# oil consumption is 15g / t, and the ethyl xanthate in collector, 206 yellow Medicine and butyl ammonium black medicine are prepared in the ratio of 8:11:2;

[0040] In step 3), collector is 10g / t;

[0041] Step 5) according to per ton of raw ore lime consumption 500g / t;

[0042] In step 7), the selected lime consumption selected 1, selected 2, and selected 3 operating amounts are respectively 500g / t, 400g / t and 300g / t;

[0043] The test results of this embodiment show that the zinc concentrate grade of the process of the present invention is 46.08%, and the zinc recovery rate is 91.67%.

Embodiment 3

[0045] The raw ore is still zinc-containing 2.5%-4.5% copper-zinc sulfide ore, and with respect to embodiment 1, change process parameters and agent parameters and carry out process test, specifically as follows:

[0046] In step 2), the consumption of activator X-43 is 500g / t, and the consumption of collector is 30g / t, and foaming agent 2# oil consumption is 30g / t, and the ethyl xanthate in collector, 206 yellow Medicine and butyl ammonium black medicine are prepared in the ratio of 12:15:5;

[0047] In step 3), collector is 15g / t;

[0048] Step 5) according to per ton of raw ore lime consumption 600g / t;

[0049] In step 7), the amount of selected lime used in the selection 1, selection 2, and selection 3 operations are respectively 600g / t, 500g / t and 400g / t.

[0050] The test results of this embodiment show that the zinc concentrate grade of the process of the present invention is 45.78%, and the zinc recovery rate is 90.21%.

[0051] It can be seen from the above three e...

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Abstract

The invention discloses a flotation method for zinc-copper sulphide ore. The method includes the steps that copper separation is conducted on raw zinc-copper sulphide ore at first and then copper milltailings are subjected to bulk flotation; the copper milltailings are added with chemicals and stirred during bulk flotation, and fast roughing flotation is performed within the time of not exceeding one minute on the premise of obtaining a stable foaming layer, so that fast zinc roughing concentrate and zinc-sulfur conjuncture mineral are obtained; and the fast roughing concentrate is subjected tozinc selection directly, the zinc-sulfur conjuncture mineral is subjected to low-speed roughing, and obtained low-speed roughing concentrate is subjected to zinc selection after being subjected to ore grinding. By the adoption of the flotation method, after part of sulphide ore monomer mineral with good floatability is subjected to fast flotation enriching, the sulphide ore monomer mineral is directly subjected to selection operation without regrinding, recovery and early recovery are achieved, the monomer mineral is not reground any more, the over-crushing phenomenon in the regrinding process can be avoided, selective ore grinding is realized, and the degree of dissociation of ore grinding products is increased. Therefore, the concentrate grade and concentrate recovery rate can be increased through the method.

Description

technical field [0001] The invention relates to a flotation method of copper-zinc sulfide ore. Background technique [0002] Polymetallic copper sulfide zinc ore is one of the complex and refractory minerals in my country, and most of the zinc metal comes from sulfide ore resources. Zinc metal is widely used in galvanizing, battery manufacturing and other fields. In view of the insufficient domestic supply, my country needs to import a large amount of zinc every year Metals can meet the needs of economic development. There are many zinc sulfide ore resources in my country, usually associated with precious metals such as gold and silver, and rare metals such as indium, cadmium, cobalt, etc., but most of them are high-sulfur, complex structures, disseminated and dense massive refractory ores. Due to the ore is easy to oxidize, dense symbiosis, sphalerite is easy to be destroyed by Cu 2+ Ion activation, high sulfur content and other reasons usually cause difficulties in flotat...

Claims

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Application Information

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IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 欧乐明冯其明曾令明张国范石睛卢毅屏
Owner CENT SOUTH UNIV
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