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A carbon inhibitor in the flotation process of lead-zinc sulfide ore and its application

A lead-zinc sulfide, flotation process technology, applied in flotation, solid separation and other directions, can solve the problem of difficult inhibition of carbonaceous gangue minerals, and achieve the effect of reducing collector consumption and fully inhibiting

Active Publication Date: 2021-06-15
CENT SOUTH UNIV
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Problems solved by technology

[0004] In view of the technical problem that carbonaceous gangue minerals are more difficult to suppress during the flotation of lead-zinc ore in the prior art, the purpose of the present invention is to provide a carbon inhibitor in the flotation process of lead-zinc ore and its application, The carbon inhibitor has strong selective inhibition to realize the separation of lead-zinc sulfide ore and carbonaceous

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  • A carbon inhibitor in the flotation process of lead-zinc sulfide ore and its application
  • A carbon inhibitor in the flotation process of lead-zinc sulfide ore and its application
  • A carbon inhibitor in the flotation process of lead-zinc sulfide ore and its application

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Embodiment 1-3

[0032] A flotation study was carried out on a carbon-bearing lead-zinc mine in Inner Mongolia. The main metal minerals are sphalerite, galena and pyrite, and the grade of zinc is 5.28%, the grade of lead is 2.23%, and the grade of iron is 8.3%. The rest of the metal minerals are low in content. Gangue minerals are mainly dolomite, calcite and organic carbon. The carbon content in the ore reaches 4.75%. The nature of the ore is complex, the symbiotic relationship between lead and zinc is close, the useful minerals lead, zinc and carbon are closely related, and the ore contains a large amount of organic carbon. These carbons have good floatability. If lead and zinc are directly flotationd during the flotation process, the carbon will inevitably enter the lead concentrate and zinc concentrate and affect the concentrate grade. Therefore, the key to solving this ore flotation lies in effective Separation of galena, sphalerite and organic carbon.

[0033] Adopt carbon depressant ...

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Abstract

The invention discloses a carbon inhibitor in the flotation process of sulfide lead-zinc ore and its application, and belongs to the field of flotation agents for sulfide ore. The structural formula of the carbon inhibitor is as follows: wherein, R is an oxygen-containing hydrophilic group, n The value ranges from 4 to 10. The carbon depressant provided by the present invention uses nonylphenol as the carbophilic group, and polyoxyethylene ether and sulfonic acid group / carboxymethyl group as the hydrophilic group. During the flotation of carbonaceous lead-zinc ore, the The use of inhibitors can effectively inhibit the flotation of carbon, reduce the consumption of collectors by carbon impurities, reduce the carbon content in concentrate products, and help improve the beneficiation index of lead-zinc concentrate.

Description

technical field [0001] The invention belongs to the field of flotation reagents for sulfide ore, and relates to a carbon inhibitor in the flotation process and its application, in particular to a carbon inhibitor in the flotation process of lead-zinc sulfide ore and its application. Background technique [0002] In the flotation process of non-ferrous metals, especially for polymetallic lead-zinc sulfide ores, it is usually necessary to add inhibitors to selectively inhibit the flotation of gangue minerals. Lead-zinc sulfide ore contains many kinds of metals such as lead, zinc, silver, sulfur and tin. The ore reserves of this mine are large, mainly concentrated in Yunnan, Inner Mongolia, Gansu, Guangdong, Hunan and Guangxi. Its economic value is high, but the intercalation of minerals The grain size is fine, and the carbonaceous content in the gangue is high, which is a refractory ore. [0003] The purpose of flotation is to separate useful minerals from gangue minerals, es...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/008B03D1/012B03D1/02B03D1/08B03D101/06B03D103/02
CPCB03D1/008B03D1/012B03D1/02B03D1/08B03D2201/06B03D2203/02
Inventor 王长涛刘润清孙伟谢菲菲荆念文唐鸿鹄
Owner CENT SOUTH UNIV
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