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Process for treating multi-metal complex sulphide ores containing carbon, lead and zinc

A polymetallic and sulfide ore technology, applied in chemical instruments and methods, solid separation, wet separation, etc., can solve problems such as loss of valuable metals, and achieve the effects of good economic benefits, high technical indicators, and simple process equipment

Inactive Publication Date: 2012-03-14
有研资源环境技术研究院(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The weakness of this method is that when floating carbon, it is inevitable to lose valuable metals

Method used

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  • Process for treating multi-metal complex sulphide ores containing carbon, lead and zinc
  • Process for treating multi-metal complex sulphide ores containing carbon, lead and zinc
  • Process for treating multi-metal complex sulphide ores containing carbon, lead and zinc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A carbon-lead-zinc polymetallic complex sulfide ore, the ore is mainly useful minerals galena and sphalerite. In addition to these useful minerals composed of beneficial elements, there are also a large number of gangue minerals quartz, feldspar and clay minerals in the ore.

[0023] The ore contains 3.5% lead, 2.8% zinc and 3% carbon.

[0024] Using the method of the present invention, the ore is about to be ground to -74μm65%, and O-isopropyl-N-ethylthiocarbamate+ethyl xanthate sodium (ratio 1:1) is used to carry out flotation, and the medicament The total dosage is 55g / t, the concentration of flotation pulp is 30%, and the flotation time of mixed flotation is 14 minutes. 15%. Gravity separation concentrates are lead concentrates, gravity separation concentrates are zinc concentrates, and gravity separation shaker tailings are carbon. See figure 1 , the test results are shown in Table 1.

[0025] Using the traditional process of first selecting lead and then sele...

Embodiment 2

[0028] Ore source is with embodiment 1.

[0029] Using the method of the present invention, the raw ore is about to be ground to -74 μm 70%, and O-isopropyl-N-ethyl thiocarbamate is used to carry out flotation. The dosage of the agent is 55g / t, and the concentration of the flotation pulp is 25%. The flotation time of the flotation is 14 minutes, and the obtained mixed concentrate is re-separated by using a shaking table, and the drug is removed and stirred for 20 minutes before the re-separation, and the concentration of the re-separation is 10%. Gravity separation concentrates are lead concentrates, gravity separation concentrates are zinc concentrates, and gravity separation shaker tailings are carbon. The test results are shown in Table 1.

[0030] Table 1 Different process results

[0031]

[0032] As can be seen from Table 1, no matter it is Example 1 or Example 2, the process provided by the present invention can be used to obtain lead concentrate and zinc concentra...

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Abstract

The invention relates to a process for treating multi-metal complex sulphide ores containing carbon, lead and zinc. In the process, the multi-metal complex sulphide ores containing carbon, lead and zinc are treated by a flotation-reselection combined process, and the process comprises the following steps of: grinding raw ores to form grains with certain granularity, obtaining mixed concentrate containing carbon, lead and zinc by a flotation method, separating flotation mixed concentrate by using specific gravity difference and a reselection method, removing reagents before reselection, and recovering lead with larger specific gravity to obtain qualified lead concentrate, reselected middling serving as zinc concentrate and reselected tailings serving as carbon. By the process, equipment issimple, high technical indexes can be obtained and great economic benefit is brought to an enterprise.

Description

technical field [0001] The invention relates to a process for treating carbon-containing, lead-zinc and polymetallic complex sulfide ores. The lead-zinc referred to in the present invention refers to galena and easily floating sphalerite. Background technique [0002] The separation of polymetallic sulfide ores containing galena and sphalerite is very difficult. The separation of such ores at home and abroad often adopts the process of preferentially flotation galena and then sphalerite. The mixed concentrate of lead and zinc can be obtained by direct mixing, but the economic benefit of the mixed concentrate is worse than that of the single concentrate. When there is carbon in the ore, the sorting of the ore is more difficult, and the obtained concentrate is difficult to meet the requirements of smelting. [0003] In the existing treatment process of carbon-containing polymetallic sulfide ores, some weak collectors such as kerosene are used to first remove carbon by flotat...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B1/00B03B5/00B03D1/001B03D103/02
Inventor 宋永胜李文娟周桂英屈伟刘爽
Owner 有研资源环境技术研究院(北京)有限公司
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