Organic lead inhibitor and application thereof

An organic lead and inhibitor technology, applied in solid separation, flotation, etc., can solve problems such as environmental pollution, difficult wastewater treatment, poor operating environment, etc., and achieve the effect of solving poor operating environment and convenient use

Active Publication Date: 2015-12-02
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides an organic lead inhibitor and its application, which not only can effectively inhibit galena, but also is safe, low-toxic, easy to use, and can effectively solve the problem of existing lead inhibitors. Poor operating environment, difficult wastewater treatment, serious environmental pollution and other problems caused by the

Method used

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  • Organic lead inhibitor and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Dissolve 71.0g of polyacrylamide with an average molecular weight of 20,000 in 200ml of water, add 22.8g of carbon disulfide, stir and mix thoroughly, and then add dropwise 40.0g of sodium hydroxide solution with a mass concentration of 30% to the above solution; the addition is complete Afterwards, the temperature was raised to 30° C., and the reaction was fully performed for 6 hours to obtain an orange-red organic lead inhibitor with a substitution degree of about 30% and a mass concentration of about 30%.

[0050] Utilize the organic lead inhibitor obtained in the above-mentioned embodiment 1 to carry out copper-lead separation test: the raw material is the copper-lead mixed concentrate obtained after the copper-lead mixed flotation operation of a certain copper-lead sulfide ore, the copper in the copper-lead mixed concentrate The grade of lead is 7.90%, and the grade of lead is 14.15%. After going through the "one rough, two sweeps and three fine" flotation processe...

Embodiment 2

[0053] Dissolve 71.0g of polyacrylamide with an average molecular weight of 100,000 in 200ml of water, add 38.0g of carbon disulfide, stir and mix thoroughly, then add 66.7g of sodium hydroxide solution with a mass concentration of 30% to the above solution dropwise; the addition is complete Afterwards, the temperature was raised to 30° C., and the reaction was fully performed for 8 hours to obtain an orange-red organic lead inhibitor with a substitution degree of about 50% and a mass concentration of 31.0-32.0%.

[0054] Utilize the organic lead inhibitor obtained in the above-mentioned embodiment 2 to carry out copper-lead separation test: raw material is the copper-lead mixed concentrate obtained after copper-lead mixed flotation operation of certain copper-lead sulfide ore, the copper in this copper-lead mixed concentrate The grade of lead is 7.90%, and the grade of lead is 14.15%. After going through the "one rough, two sweeps and three fine" flotation process described i...

Embodiment 3

[0057] Dissolve 71.2g of acrylamide-acrylic acid copolymer (in this acrylamide-acrylic acid copolymer, the molar ratio of acrylamide to acrylic acid is 8:2, the molecular weight is about 200000) in 200ml of water, and add 18.24g of carbon disulfide, stir well Mix, and then dropwise add 58.7g of sodium hydroxide solution with a mass concentration of 30% to the above solution; after the dropwise addition, the temperature is raised to 40°C, and the reaction is sufficient for 6 hours to obtain a degree of substitution of about 24%, and a mass concentration of 28.0 to 29.0 % of orange-red organic lead inhibitors.

[0058] Utilize the organic lead inhibitor obtained in the above-mentioned embodiment 3 to carry out copper-lead separation test: raw material is the copper-lead mixed concentrate obtained after copper-lead mixed flotation operation of certain copper-lead sulfide ore, the copper in this copper-lead mixed concentrate The grade of lead is 19.60%, and the grade of lead is 16...

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Abstract

The invention discloses an organic lead inhibitor and application thereof. A preparation method of the organic lead inhibitor includes the steps that polyacrylamide with the molecular weight ranging from 200 to 1000000 is reacted with carbon disulfide for 1-12 h at 20-80 DEG C in the presence of alkali, and the organic lead inhibitor is obtained after reaction, wherein the amount of substance of the carbon disulfide is larger than 0 and equal to or small than that of acrylamide monomers in the polyacrylamide, and the molar ratio of the alkali to the carbon disulfide is 1-1.2:1. The organic lead inhibitor can be applied to copper-lead separation or copper-zinc separation or copper-lead-zinc separation. The embodiment of the organic lead inhibitor can effectively inhibit lead ore and is safe, low in toxicity, convenient to use and capable of effectively solving the problems of poor operating environment, difficult wastewater treatment and serious environmental pollution caused by an existing lead inhibitor.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to an organic lead inhibitor and its application. Background technique [0002] my country's mineral resources have the characteristics of few rich ores that are single and easy to select, and many poor, fine, miscellaneous, and difficult-to-separate co-associated ores. For copper-lead-zinc polymetallic minerals, the grade of copper minerals in the ore is generally low, and the floatability of copper minerals and lead minerals is similar, so copper-lead-zinc polymetallic sulfide minerals are mostly used in flotation. Mixed flotation process, but the copper-lead mixed flotation process obtains copper-lead mixed concentrate, which brings great difficulties to the subsequent separation of copper and lead. [0003] At present, there are mainly two flotation processes for copper-lead separation: copper-suppressed floating lead and lead-suppressed floating copper. However, bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/016B03D101/06B03D103/02
Inventor 张行荣郑桂兵朱阳戈刘崇峻艾晶尚衍波吴卫国
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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