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Flotation method of lead-zinc sulfide ore and sphalerite combined inhibitor

A combined inhibitor and lead-zinc sulfide technology, applied in flotation, solid separation and other directions, can solve the problems of incomplete inhibition of sphalerite, high cost of chemicals, and floating of sphalerite, and achieve strong adaptability, low price, good selective effect

Active Publication Date: 2021-01-22
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the above several chemical systems, the dosage of the chemical is relatively large, the cost of the chemical is hig...

Method used

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  • Flotation method of lead-zinc sulfide ore and sphalerite combined inhibitor

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Embodiment 1

[0044] A flotation study was carried out on a lead-zinc mine in Shaanxi Province. The main metal minerals are sphalerite, galena and pyrite. The grade of zinc is 3.28%, the grade of lead is 1.35%, and the grade of sulfur is 7.4%, which belongs to low Sulfur lead zinc ore. The rest of the metal minerals are low in content. Gangue minerals are mainly quartz and calcite.

[0045] Adopt zinc inhibitor of the present invention to carry out flotation to certain lead-zinc ore in Shaanxi, as Figure 5 shown, including the following steps:

[0046] (1) Grinding: Grinding the raw ore to a fineness of -0.074mm accounting for 80%;

[0047] (2) Slurry: add lime 1000g / t, stir for 3min, obtain the ore pulp after slurry;

[0048] (3) Lead flotation: add sphalerite combination inhibitor 100g / t, add collector 40g / t xanthate and No. 2 oil foaming agent 20g / t after 2min for rough separation of lead; flotation lead coarse and fine The ore is subjected to two beneficiation to obtain le...

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Abstract

The invention discloses a flotation method of lead-zinc sulfide ore and a sphalerite combined inhibitor. Theflotation method comprises the following steps: grinding raw ore to obtain ore pulp with preset fineness; adding lime into the ore pulp with the preset fineness for pulp mixing to prepare the blended ore pulp; taking copper sulfate and pectin as a sphalerite combined inhibitor, and carryingout lead flotation operation on the blended ore pulp to obtain lead concentrate and lead flotation tailings; carrying out zinc flotation operation on the lead flotation tailings to obtain the zinc concentrate and tailings. According to the method, the adopted sphalerite combined inhibitor has a strong selective inhibition effect on sphalerite flotation, pectin is taken from peels of citrus, lemon,grapefruit, apple and the like, is low in cost, can be naturally degraded, does not pollute the environment, is used as a naturally-degradable cleaning agent, is less in dosage in the flotation process, and is environment-friendly and pollution-free. Therefore, efficient separation of lead and zinc can be achieved, and excellent flotation indexes are obtained.

Description

technical field [0001] The invention belongs to the field of sulfide ore flotation reagents, and relates to a flotation method of lead-zinc sulfide ore and a sphalerite combined inhibitor. Background technique [0002] Lead and zinc are very important non-ferrous metals, and galena and sphalerite are the main carrier minerals of lead and zinc. During the mineralization process, galena is usually symbiotic or associated with sphalerite, forming a closely symbiotic / associated lead-zinc sulfide ore. However, both have good natural floatability, no matter in the preferential flotation or mixed flotation process, it is necessary to add inhibitors to achieve the selective separation of galena and sphalerite. [0003] In the prior art, zinc sulfate is the most common sphalerite inhibitor, and commonly used combined inhibitors include sodium carbonate+zinc sulfate, sodium sulfite+zinc sulfate, sodium thiram+zinc sulfate, etc. However, in the above several chemical systems, the dos...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/06B03D101/02B03D101/04B03D103/02
CPCB03D1/018B03D2201/02B03D2201/04B03D2201/06B03D2203/02
Inventor 王长涛刘润清孙伟荆念文谢菲菲胡岳华
Owner CENT SOUTH UNIV
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