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A method for separating arsenic and recovering antimony and tin by copper anode slime reduction-organic sulfide method

A copper anode slime and organic technology, which is applied in the field of comprehensive resource recycling and environmental protection, can solve the problems of poor separation effect and long antimony separation process, and achieve the effect of easy control, less additive dosage and good separation effect

Active Publication Date: 2019-12-03
ZHAOQING FEINAN METAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the one hand, antimony white and tin dioxide with commercial application value are obtained, on the other hand, the problems of long separation process and poor separation effect of traditional arsenic and antimony are solved, which is of great significance to the efficient and comprehensive utilization of copper anode slime

Method used

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  • A method for separating arsenic and recovering antimony and tin by copper anode slime reduction-organic sulfide method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 1 As shown, the copper anode slime reduction-organic sulfide method separates arsenic and recovers antimony and tin, and the specific steps are as follows:

[0041] Step 1. First, the copper anode slime (in which the mass percentage content of As is 9.91%, the mass percentage content of Sb is 6.34%, and the mass percentage content of Sn is 13.34%, and also contains the following mass percentages of metal elements: also contains the following mass percentages of metals Elements: Cu 11.62%, Ni 5.8%, Pb 1.54%), reducing agent (the reducing agent is carbon powder, and the amount of reducing agent added is 5% of the mass of copper anode slime) respectively ground to a particle size of 74 μm and then mixed uniformly. Under the protection of nitrogen inert gas at a flow rate of 0.4L / min, the arsenic-containing fume and a substrate were obtained by reducing and roasting for 90 minutes at a temperature of 600 °C to obtain arsenic-containing fume and a first-stage sub...

Embodiment 2

[0046] like figure 1 Shown, this copper anode slime reduction-organic vulcanization method separates arsenic and reclaims the method for antimony, tin, and its specific steps are as follows:

[0047] Step 1, first copper anode slime (wherein As mass percentage content is 9.91%, Sb mass percentage content is 6.34%, Sn mass percentage content is 13.34%, also comprises the metal element of following mass percentage: also comprises the following mass percentage of metal Elements: Cu 11.62%, Ni 5.8%, Pb 1.54%), reducing agent (the reducing agent is coke, and the amount of reducing agent added is 10% of the mass of copper anode slime) respectively ground to a particle size of 74 μm and mixed evenly, The gas flow rate is 0.4L / min, under the protection of nitrogen inert gas, reduction roasting at 700°C for 60 minutes to volatilize and remove arsenic to obtain arsenic-containing fumes and a substrate, and the arsenic-containing fumes are absorbed by NaOH with a concentration of 20g / L; ...

Embodiment 3

[0052] like figure 1 Shown, this copper anode slime reduction-organic vulcanization method separates arsenic and reclaims the method for antimony, tin, and its specific steps are as follows:

[0053] Step 1, first copper anode slime (wherein As mass percentage content is 9.91%, Sb mass percentage content is 6.34%, Sn mass percentage content is 13.34%, also comprises the metal element of following mass percentage: also comprises the following mass percentage of metal Elements: Cu 11.62%, Ni 5.8%, Pb 1.54%), reducing agent (the reducing agent is anthracite, and the amount of reducing agent added is 8% of the mass of the copper anode slime) were respectively ground to a particle size of 74 μm, mixed evenly, and passed through The inflow gas flow rate is 0.4L / min under the protection of nitrogen inert gas, and the temperature is 800 ° C for 90 minutes to volatilize and remove arsenic to obtain arsenic-containing fumes and a substrate. The arsenic-containing fumes are treated with ...

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Abstract

The invention relates to a method for separating arsenic and further recycling antimony and tin with a copper anode slime reduction-organic vulcanization method, and belongs to the technical field ofresource comprehensive recovery, utilization and environmental protection. The method includes the steps that copper anode slime and a reducing agent are evenly mixed after being ground at first, andreduction roasting volatilization arsenic removing is conducted under the inert gas shielding condition to obtain arsenic-containing soot and a first section of substrate; the obtained first section of the substrate and the reducing agent are evenly mixed after being ground, and reduction roasting is performed under the inert gas shielding condition to obtain the volatile product of antimony oxideand a second section of substrate; and the obtained second section of the substrate and an organic vulcanizing agent are evenly mixed after being ground, and reduction roasting is conducted under theinert gas shielding condition to obtain tin sulfide and a third section of substrate. The main phases of arsenic, antimony and tin in anode slime include As2O5, Cu3(AsO4)2, Sb2O4 and SnO2. By adoption of the method, the characteristics that high-value arsenic and antimony can be reduced easily and the oxide of the arsenic and antimony has different volatilities are fully utilized, and the arsenicand antimony separation problem of the copper anode slime is solved; and meanwhile the characteristics that the tin can be vulcanized easily and tin sulfide can volatilize easily are used for volatile recycling of the tin in the substrate.

Description

technical field [0001] The invention relates to a method for separating arsenic and recovering antimony and tin by reduction-organic sulfide method of copper anode slime, belonging to the technical field of comprehensive resource recovery and utilization and environmental protection. Background technique [0002] Under the premise of continuous advancement of materials science and technology, the application range of antimony has been continuously expanded. The EU lists antimony as one of the 14 key raw materials, and the demand for antimony is increasing day by day. However, in recent years, my country's antimony production has shown a downward trend. According to a report in 2010 by a British mining consulting company, China has no antimony deposits that have been continuously developed for more than ten years. Statistics from the US Geological Survey also show that if no important antimony deposits are found in the future, The world's antimony ore resources will be exhaust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B1/02C22B25/06C22B25/02C22B30/02C22B30/04
CPCC22B1/02C22B7/001C22B25/02C22B25/06C22B30/02C22B30/04Y02P10/20
Inventor 王华李磊钟大鹏谈诚于勇王加运
Owner ZHAOQING FEINAN METAL