Method for separating arsenic and further recycling antimony and tin with copper anode slime reduction-organic vulcanization 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 process flow of antimony separation, and achieve the effect of easy control, less additive dosage and simple process flow

Active Publication Date: 2018-03-23
ZHAOQING FEINAN METAL
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  • Abstract
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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

Method used

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  • Method for separating arsenic and further recycling antimony and tin with copper anode slime reduction-organic vulcanization method

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0039] Example 1

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

[0041] Step 1. First, the copper anode slime (where the As mass percentage content is 9.91%, the Sb mass percentage content is 6.34%, the Sn mass percentage content is 13.34%, and also contains the following mass percentages of metal elements: also contains the following mass percentages of metal Elements: Cu 11.62%, Ni 5.8%, Pb 1.54%), reducing agent (reducing agent is carbon powder, the amount of reducing agent added is 5% of the mass of copper anode slime) are ground to a particle size of 74μm and then mixed uniformly. The inlet gas flow rate is 0.4L / min under the protection of nitrogen inert gas, and the arsenic-containing smoke is obtained by reducing and roasting at a temperature of 600℃ for 90 minutes to volatilize and remove arsenic to obtain arsenic-containing smoke and a substrat...

Example Embodiment

[0045] Example 2

[0046] Such as figure 1 As shown, the copper anode slime reduction-organic sulfide method separates arsenic and recovers antimony and tin. The specific steps are as follows:

[0047] Step 1. First, the copper anode slime (where the As mass percentage content is 9.91%, the Sb mass percentage content is 6.34%, the Sn mass percentage content is 13.34%, and also contains the following mass percentages of metal elements: also contains the following mass percentages of metal Elements: Cu 11.62%, Ni 5.8%, Pb 1.54%), reducing agent (reducing agent is coke, the amount of reducing agent added is 10% of the mass of copper anode slime) are ground to a particle size of 74μm and then mixed uniformly. With a gas flow of 0.4L / min, under the protection of nitrogen inert gas, reduce and roast at a temperature of 700℃ for 60min to volatilize arsenic to obtain arsenic-containing smoke and a section of substrate. The arsenic-containing smoke is absorbed by NaOH with a concentration ...

Example Embodiment

[0051] Example 3

[0052] Such as figure 1 As shown, the copper anode slime reduction-organic sulfide method separates arsenic and recovers antimony and tin. The specific steps are as follows:

[0053] Step 1. First, the copper anode slime (where the As mass percentage content is 9.91%, the Sb mass percentage content is 6.34%, the Sn mass percentage content is 13.34%, and also contains the following mass percentages of metal elements: also contains the following mass percentages of metal Elements: Cu 11.62%, Ni 5.8%, Pb 1.54%), reducing agent (the reducing agent is anthracite, the amount of reducing agent added is 8% of the copper anode slime mass), respectively, are ground to a particle size of 74 μm and then mixed uniformly. The inlet gas flow rate is 0.4 L / min. Under the protection of nitrogen inert gas, the arsenic-containing fumes and a substrate are obtained by reducing and roasting at a temperature of 800 ℃ for 90 minutes to obtain arsenic-containing fumes and a substrate. ...

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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 copper anode slime reduction-organic vulcanization, and belongs to the technical field of resource comprehensive recycling and environmental protection. Background technique [0002] Under the premise of continuous progress in material science and technology, the scope of application of antimony continues to expand. The European Union has listed 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 2010 report by a British mining consulting company, China has no antimony deposits that can be 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 exhausted in more than te...

Claims

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Application Information

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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
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