Method for comprehensively recovering iron and germanium from zinc calcine containing high iron and high indium

A technology of zinc calcine and iron recovery, which is applied to the improvement of process efficiency, photography technology, instruments, etc., can solve the problems of unrecyclable tailings, complicated operation process, high cost, etc., and achieve easy operation, short process flow and low emission The effect of less pollutants

Inactive Publication Date: 2012-10-03
GUANGXI JINSHAN INDIUM & GERMANIUM METALLURGICAL CHEM
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  • Abstract
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Problems solved by technology

[0010] The deficiencies in the above-mentioned documents are that some of them use substances that are easy to pollute the environment, some need to be carried out under high temperature and high pressure conditions, some have complicated operation processes, and the cost is too high. The slag or tailings cannot be recycled, so the minerals with low germanium content are restricted to a certain extent

Method used

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  • Method for comprehensively recovering iron and germanium from zinc calcine containing high iron and high indium

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Experimental program
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Effect test

Embodiment 1

[0045] 1. Add 23m3 of waste electrolyte containing 145g / L of sulfuric acid and 48g / L of zinc into the reactor, and then put in zinc containing 12.8% Fe, 0.086% In, 0.019% Ge and 54.5% zinc 3000kg of calcined sand is subjected to neutral leaching, the temperature is 68°C, the leaching time is 2 hours, and the pH of the leaching end point is 5.2; 20m3 neutral leaching solution containing 142g / L zinc is produced, and zinc powder is added for purification to produce electrolytic zinc by electrolysis. 1783 kg of neutral leaching residue with a moisture content of 15% was produced.

[0046] 2. Leach 1,783kg of the neutral leaching residue with a sulfuric acid solution containing 55g / L of acid at a liquid-solid ratio of 3 / 1, at a temperature of 60°C, for 2 hours of leaching time, at the end of leaching pH=4.8, and produce zinc-containing 5.3m3 of 65g / L low-acid leach solution and 1458kg of low-acid leach residue with 15% moisture content.

[0047] 3. Add 1458kg of the lo...

Embodiment 2

[0052] 1. Add 23m3 of waste electrolyte containing 145g / L of sulfuric acid and 48g / L of zinc into the reaction tank, and then put in zinc containing 18.4% Fe, 0.152% In, 0.025% Ge and 56.7% zinc 3000kg of calcined sand is subjected to neutral leaching, the temperature is 70°C, the leaching time is 2 hours, and the pH of the leaching end point is 5.2; 20m3 neutral leaching solution containing 136g / L of zinc is produced, and the neutral leaching solution is added with zinc powder for purification and electrolysis to produce electricity Zinc, while producing 1756kg of neutral leaching slag with a moisture content of 18%.

[0053] 2. Leach 1,756kg of the neutral leaching residue with a sulfuric acid solution containing 60g / L of acid at a liquid-solid ratio of 3 / 1, at a temperature of 60°C, for 2 hours of leaching time, at the end of leaching pH=4.8, and produce zinc-containing 4.8m3 of 68g / L low-acid leaching solution and 1667kg of low-acid leaching residue with a moistur...

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Abstract

The invention discloses a method for comprehensively recovering iron and germanium from zinc calcine containing high iron and high indium. The method comprises the following steps of: leaching the zinc calcine containing the indium, the germanium and zinc by using a sulfuric acid, sending a solution to electrolyze the zinc, leaching a leaching residue by using a low acid, merging with a high-lead residue together to leach by using a high-temperature high acid, adding a hydroximic acid and P204 kerosene to synergistically extract the indium and the germanium to respectively acquire an indium ingot and a germanium concentrate, and recycling extracting liquid after the iron is recovered. By using the method, the germanium and the indium can be extracted from slag with a lower grade; a procedure is simple; the operation is easy; and fewer pollutants are discharged.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metallurgy, and in particular relates to a method for comprehensively recovering iron and germanium from zinc calcine containing high iron and high indium. Background technique [0002] Germanium, element symbol: Ge, is a raw material for the semiconductor industry that is widely used in modern science. Although the content of germanium in the earth's crust is more than that of arsenic, uranium, mercury, iodine, silver, gold and other elements, it is very scattered, so , known as "scattered metals", China is the main producer of germanium. China's germanium reserves account for 41% of the world's total, but its production accounts for about 67%. Therefore, China is the main supplier of indium and germanium in the world. Indium is mainly associated with lead-zinc mines. In China, it is mainly distributed in Yunnan (40%), Guangxi (31%), Qinghai (8%), Inner Mongolia (8%), and Guangdong (7%). [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/08C22B3/26C22B3/46C22B3/44C22B15/00C22B41/00C22B58/00C22B13/00C22B11/00C25C1/16
CPCY02P10/20
Inventor 邓金卓王振峰高军段志勇刘运生戴伟明莫文俊杨永明吴军
Owner GUANGXI JINSHAN INDIUM & GERMANIUM METALLURGICAL CHEM
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