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A method for separating arsenic and recovering antimony by a high-arsenic and antimony fume sulfidation method

A high-arsenic antimony fume and arsenic fume technology is applied in the field of comprehensive resource recycling and environmental protection. It can solve the problems of long antimony separation process and poor separation effect, and achieve the effect of cheap process control, good effect and simple process flow.

Active Publication Date: 2018-07-24
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, antimony white with commercial application value is obtained, on the other hand, it solves the problems of traditional arsenic and antimony separation process such as long process and poor separation effect, which is of great significance to the efficient and comprehensive utilization of high arsenic and antimony dust

Method used

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  • A method for separating arsenic and recovering antimony by a high-arsenic and antimony fume sulfidation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 Shown, this high arsenic antimony soot vulcanization method separates arsenic and reclaims the method for antimony, concrete steps are as follows:

[0027] (1) First, high arsenic and antimony dust (the mass percentage content of As is 34.86%, the mass percentage content of Sb is 28.72%), vulcanizing agent (sulfur, the amount of sulfur added is 20% of the mass of high arsenic and antimony dust) to the particle size Mix evenly for 75um, under the protection of nitrogen inert gas with a gas flow rate of 0.4L / min, vulcanize and roast at a temperature of 350°C for 90min, volatilize and remove arsenic to obtain arsenic-containing smoke, the concentration of arsenic-containing smoke is 40g / L The NaOH is absorbed;

[0028] (2) After the arsenic removal is completed, continue to heat up to 700°C to volatilize for 60 minutes to recover antimony, and collect dust from the flue gas at this stage to complete the recovery of antimony

[0029] After analysis and de...

Embodiment 2

[0031] Such as figure 1 Shown, this high arsenic antimony soot vulcanization method separates arsenic and reclaims the method for antimony, concrete steps are as follows:

[0032] (1) Firstly, high arsenic and antimony dust (the mass percentage content of As is 34.86%, and the mass percentage content of Sb is 28.72%), vulcanizing agent (sulfur, the amount of sulfur added is 30% of the mass of high arsenic and antimony dust) is ground to the particle size Mix evenly for 75um, under the protection of nitrogen inert gas with a gas flow rate of 0.4L / min, vulcanize and roast at a temperature of 400°C for 60min, volatilize and remove arsenic to obtain arsenic-containing smoke, the concentration of arsenic-containing smoke is 40g / L The NaOH is absorbed;

[0033] (2) After the arsenic removal is completed, continue to heat up to 800°C to volatilize for 80 minutes to recover antimony, and collect dust from the flue gas at this stage to complete the recovery of antimony

[0034] After...

Embodiment 3

[0036] Such as figure 1 Shown, this high arsenic antimony soot vulcanization method separates arsenic and reclaims the method for antimony, concrete steps are as follows:

[0037] (1) Firstly, high arsenic and antimony dust (the mass percentage content of As is 34.86%, and the mass percentage content of Sb is 28.72%), vulcanizing agent (sulfur, the amount of sulfur added is 110% of the mass of high arsenic and antimony dust) is ground to the particle size Mix evenly for 75um, under the protection of nitrogen inert gas with a gas flow rate of 0.4l / min, vulcanize and roast at a temperature of 400°C for 150min, volatilize and remove arsenic to obtain arsenic-containing smoke, the concentration of arsenic-containing smoke is 40g / L The NaOH is absorbed;

[0038] (2) After the completion of arsenic removal, continue to heat up to 900°C to volatilize for 100 minutes to recover antimony, and collect dust from the flue gas at this stage to complete the recovery of antimony

[0039] A...

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Abstract

The invention relates to a method for separating arsenic and recycling stibium with a high-arsenic and stibium smoke vulcanization method, which belongs to the technical field of comprehensive recycling and utilization of resources and environmental protection. The method for separating arsenic and recycling stibium with the high-arsenic and stibium smoke vulcanization method comprises the steps of grinding high-arsenic and stibium smoke and vulcanizing agents, then uniformly mixing, vulcanizing and calcining under inert gas protection so as to volatilize to remove arsenic, so that arsenic containing smoke is obtained, continuously heating after arsenic is removed, so that stibium is recycled, and performing dust collection on the smoke in the stage, so that stibium recycling is completed. According to the method, hydrophobicity and hydrophilicity of arsenic and stibium and the characteristics of different volatilities of sulfides and oxides are fully used, so that the problem of separating arsenic and stibium from the high-arsenic and stibium smoke is solved.

Description

technical field [0001] The invention relates to a method for separating arsenic and recovering antimony by a high-arsenic and antimony fume sulfidation method, belonging to the technical fields 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 ten years,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/02C22B30/02C22B1/02
CPCC22B1/02C22B7/02C22B30/02Y02P10/20
Inventor 李磊谈诚王华钟大鹏王富友
Owner KUNMING UNIV OF SCI & TECH