Method of comprehensively recovering lead and zinc in high mud carbonate lead-zinc oxide ores

A carbonate-type, lead-zinc oxide technology, applied to the improvement of process efficiency, photography technology, instruments, etc., can solve the problems of high lead-zinc mutual content rate, difficult separation, lead-zinc separation difficulty, etc., to shorten the processing time process, energy consumption avoidance, pollution reduction effect

Active Publication Date: 2018-07-03
有研资源环境技术研究院(北京)有限公司
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Problems solved by technology

[0002] Zinc is one of the important raw materials for the construction of the national economy. With the development of the national economy, the demand for zinc continues to increase, and the ore grade of zinc mining is also declining. Zinc ore cannot be economically processed and recovered by traditional dressing and smelting processes
At present, in the beneficiation and smelting process of high-sludge carbonate-type lead-zinc oxide ore, it is difficult to separate lead and zinc by traditional sulfidation flotation or gravity separation, and the lead-zinc mutual content rate in the product is high, which is difficult to meet the needs of later smelting
[0003] Therefore, for high-mud carbonate-type lead-zinc oxide ore, it is necessary to solve the problems of enriching lead and reducing zinc content in lead concentrate before lead smelting. Very serious sorting difficulties

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  • Method of comprehensively recovering lead and zinc in high mud carbonate lead-zinc oxide ores

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Embodiment 1

[0029] Such as figure 1 It shows that a lead-zinc ore in Xinjiang belongs to high-mud carbonate-type lead-zinc ore, with a zinc grade of more than 33% and a lead grade of about 7%. figure 1 Shown:

[0030] (1) Grinding: Grinding fineness of high mud carbonate type lead-zinc ore to -200 mesh 60%;

[0031] (2) Sulfuric acid leaching: Sulfuric acid leaching of high-sludge-containing carbonate-type lead-zinc ores, pulp concentration 30wt%, temperature 50°C, zinc ions in the leach solution obtained are 110g / L, and lead is mainly retained in the form of white lead ore. In the acid leaching residue, the total iron ion concentration is 6g / L, the pH is controlled between 1.3 and 1.8, and the zinc leaching rate is about 99%;

[0032] (3) Pressure filtration: press filtration leaching residue to directly obtain high-concentration zinc leachate;

[0033] (4) Iron removal by high-concentration zinc leaching solution: add zinc powder equivalent to 1.6 times of ferric iron to the high-con...

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Abstract

The invention relates to a method of comprehensively recovering lead and zinc in high mud carbonate lead-zinc oxide ores by combining beneficiation and smelting to solve the problem that zinc concentrate and lead concrete low in mutual content ratio in high mud carbonate lead-zinc oxide ores cannot be separately obtained by means of conventional vulcanization and sorting processes and the difficulty of comprehensively recovering lead and zinc is great. By means of dissolving difference of smithsonite and cerusite in the same pH region, zinc and lead are dissolved selectively so as to achieve the purpose of comprehensively recovering zinc and lead, high energy consumption of roasting and volatilization is avoided, and meanwhile, pollution of exhaust gas and dust is reduced and the processing flow is shortened.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal extraction, and relates to a method for comprehensively recovering lead and zinc in high-mud carbonate-type lead-zinc oxide ore. Background technique [0002] Zinc is one of the important raw materials for the construction of the national economy. With the development of the national economy, the demand for zinc continues to increase, and the ore grade of zinc mining is also declining. Zinc ore cannot be economically processed and recovered by traditional dressing and smelting processes. At present, in the beneficiation and smelting process of high-sludge carbonate-type lead-zinc oxide ore, it is difficult to separate lead and zinc by traditional sulfidation flotation or gravity separation, and the lead-zinc mutual content rate in the product is high, which is difficult to meet the needs of later smelting. [0003] Therefore, for high-mud carbonate-type lead-zinc oxide ore, it is necessa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/08C22B3/46C22B3/38C22B19/20C22B13/00C25C1/16
CPCC22B3/08C22B3/46C22B13/04C22B19/22C22B19/26C25C1/16C22B3/3846Y02P10/20
Inventor 刘学武彪高文成莫晓兰温建康
Owner 有研资源环境技术研究院(北京)有限公司
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