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Combined lead inhibitor for micro-fine particle galena and application of combined lead inhibitor

A combined inhibitor and inhibitor technology, applied in solid separation, flotation, etc., can solve the problems of incomplete suppression of fine-grained lead, low lead recovery rate, and large dosage of chemicals, so as to improve the separation efficiency of copper and lead and reduce the cost of chemicals. Low, reduce the effect of mutual inclusion

Active Publication Date: 2020-09-29
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a combination lead inhibitor of high-efficiency green, economical and environment-friendly fine-grained galena and its application, which is used to solve the problem of incomplete suppression of fine-grained lead in the copper-lead flotation separation system and the problem of copper concentrate products. The problem of high lead content in medium, large amount of medicament, and low lead recovery rate

Method used

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  • Combined lead inhibitor for micro-fine particle galena and application of combined lead inhibitor
  • Combined lead inhibitor for micro-fine particle galena and application of combined lead inhibitor
  • Combined lead inhibitor for micro-fine particle galena and application of combined lead inhibitor

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Embodiment 1

[0032] The copper-lead mixed concentrate sample was taken from the slurry at the overflow port of the regrinder before the separation of copper and lead in a concentrator in Dongshengmiao, Inner Mongolia. The copper-lead concentrate sample contains 8.56% copper and 38.67% lead. Among them, copper and lead mainly exist in the form of chalcopyrite and galena. Contains a small amount of pyrite, and small amounts of gangue minerals such as quartz, talc and mica. The particle size composition of copper-lead mixed concentrate is shown in Table 1. It can be seen from Table 1 that the regrind fineness is -0.045mm, accounting for 82.10%. Obviously, -19μm galena accounts for 48.60%. The effective suppression of is the difficulty in the separation of copper and lead in this ore. The particle size composition of copper-lead mixed concentrate is shown in Table 1.

[0033] Table 1 Copper-lead mixed concentrate particle size composition / %

[0034]

[0035] In this embodiment, the flot...

Embodiment 2

[0072] A complex copper-lead-zinc-silver-tin polymetallic mine in Xinjiang, the raw ore contains 0.21% copper, 1.41% Pb, 3.35% zinc, 4.71% sulfur, 127.3g / t silver, and 0.079% tin. The main metals in the ore are Minerals are pyrite, galena, sphalerite, arsenopyrite and a small amount of chalcopyrite, pyrrhotite, cassiterite, gangue minerals are mainly quartz, followed by muscovite, chlorite and dolomite. The mine is a silver-rich lead-zinc mine with high economic value. According to the results of the scheme exploration test, it is determined to adopt the scheme of "copper-lead mixed flotation-copper-lead mixed concentrate separation", and the selection process is as follows figure 2 shown. Raw ore grinding fineness -0.074mm accounts for 70%. Copper-lead mixed concentrate and copper-lead mixed floating tailings are obtained by adopting a process of first roughing, second sweeping and third refining. The quality and grade of the flotation concentrate and flotation tailings ob...

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Abstract

The invention discloses a combined lead inhibitor for micro-fine particle galena and application of the combined lead inhibitor. The active components of the combined lead inhibitor are composed of polymaleic acid, water glass and carboxyethyl cellulose, and a mass ratio of the polymaleic acid to the water glass to the carboxyethyl cellulose is (1-6): (2-5): (0.25-2). According to the invention, the organic inhibitors including the polymaleic acid and the carboxyethyl cellulose and the inorganic inhibitor water glass are combined according to the certain mass ratio, and through the synergisticeffect of the agents, the dosage of the combined lead inhibitor is reduced compared with the dosage of the agents used alone, and the inhibition performanceof the combined lead inhibitor is also significantly enhanced. The combined inhibitor can efficiently and selectively inhibit coarse and medium-sized galena, has a good inhibition effect on micro-fine particle galena, basically does not influence flotation of chalcopyrite, and achieves the purpose of selective separation. The combined inhibitor is formed by combining water-soluble micromolecular carboxylic acid, high-molecular organic matter CEC and conventional inhibitors, and is simple to prepare and easy to industrially implement; and meanwhile, HPMA is an excellent water treatment agent and can be used for complexing heavy metal ions in beneficiation wastewater, so wastewater recycling difficulty is greatly reduced.

Description

technical field [0001] The invention belongs to the field of mineral processing, and in particular relates to a combined lead inhibitor of fine-grained galena and an application thereof. Background technique [0002] Complex copper-lead-zinc polymetallic sulfide ores have complex ore properties and dense symbiosis of useful minerals. Therefore, complex beneficiation processes must be selected according to the properties of the original ore to process this type of ore. The beneficiation process usually includes priority flotation process, partial mixed flotation process, copper-lead-zinc mixed flotation process, etc. Since chalcopyrite and galena have very similar floatability, the copper-lead separation process after copper-lead mixed flotation is the most widely used. Copper and lead are separated, and zinc and sulfur are re-selected from the tailings. In the separation process of copper-lead mixed concentrate, according to the principle of "suppress more and float less",...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/018B03D101/06B03D101/02B03D101/04B03D103/02
CPCB03D1/00B03D1/018B03D2201/02B03D2201/04B03D2201/06B03D2203/02
Inventor 魏茜焦芬覃文庆杨聪仁刘维韩俊伟董留洋崔艳芳
Owner CENT SOUTH UNIV
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