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A method for preparing antimony oxide, arsenate and soda ash by using arsenic-alkali slag as raw material

An antimony oxide and arsenic alkali residue technology is applied in the field of comprehensive utilization of environmental protection and waste resources, which can solve the problems of unfavorable production and working environment, high solubility, and bulky arsenic-containing waste liquid, etc. Secondary pollution, good separation effect

Active Publication Date: 2021-06-11
长沙紫宸科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the zinc ammonia precipitation effect in the current technology is inferior to the ammonia magnesium precipitation effect
[0010] To sum up, the precipitation separation treatment method of the existing wet treatment process will produce a large volume of arsenic-containing waste liquid, and direct discharge will bring huge pollution to the environment. Advanced treatment is required to meet the discharge standard. High cost and high energy consumption. Even the mixed salt method such as direct crystallization of sodium arsenate soda ash needs to evaporate a large volume of arsenic-containing liquid, and the splash of arsenic-containing droplets is unavoidable during the evaporation process, and the operating environment is harsh; two, The antimony-containing slag after water leaching or oxidation water leaching is returned to the antimony smelting system, resulting in the circulation of arsenic, lead and gangue minerals, which is not conducive to production and working environments; But there is not much market space, and solidified arsenate (such as calcium arsenate solidified by lime, iron arsenate solidified by iron salt, ammonium zinc arsenate solidified by ammonia zinc complex) has high solubility in water and poor stability. High toxicity and no market value, almost all of them are disposed of in landfill

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In this example, a arsenic smelter, arsenic smelter, detecting AS 9.73%, Sb 26.18%, PB 5.79%, NA2.2.76%; use commercially available industrial grade percarbonate (active oxygen ≥13.5%), industrial grade glycerol ( The content was 98.5%), the base (96% of the chinenkine NaOH), the acid (content of 95%), liquefied carbon dioxide (content of 99%), industrial grade chloride (content of 99.1%) was raw materials, and water was tapped with tap water.

[0046] The main steps of this embodiment are as follows:

[0047] (1) Oxidation of oxidation of water: according to arsenic acid, sodium carbonate: water = 100:17.3:600 is mixed, and the powder mill is formed into a slurry of 80 μm of particle diameter, and the mixture is stirred at 80 ° C for 2 h, Separate, rich in antimony, leaching liquid A;

[0048] (2) Breaking separation of ruthenium: Based on quasi-affected slag (dry base): glycerol: Cantyl base: water = 1: 2.1:0.9:4.9 is mixed with ingredients, stirred in the mixture of 1.3H...

Embodiment 2

[0069] The arsenic smelter, arsenic smelter, was used to detect AS 11.26%, Sb 24.35%, Pb 2.77%, Na24.1%; use commercially available industrial grade percarbonate (active oxygen ≥13.5%), industrial grade glycerol (content of 98.5%) ), The base (96% of the chinenkine NaOH), phytic acid (content of 95%), liquefied carbon dioxide (content of 99%), nickel chloride (content of 98.5%) is a raw material, and water is tapped by tap water. Implementing the antimony, arside and pure base as a raw material as follows, the main steps are as follows:

[0070] (1) Oxidation of oxidation of water: set arsenic alkali-grazing ingredient ratio of arsenine: sodium carbonate: water = 100: 22: 700, the thin-thin temperature is 90 ° C, which is separated by three levels. First, according to arsenic acid: sodium carbonate: water = 100: 15: 200% compared to ingredient mixed powder milling of particle diameter <= 74 μm slurry, arsenic, alkali slurry, etc., is sent to three solubble tanks Inside, the ingred...

Embodiment 3

[0093] Choose arsenoid smelter with a bismuth smelter, test: AS 17.84%, Sb 14.87%, PB 3.42%, Na26.70%; use commercially available industrial grade carbonate (active oxygen ≥13.5%), industrial grade glycerol (content 98.5 %), Amphorizens (96% of the chinenkine NaOH), phytic acid (content of 95%), liquefied carbon dioxide (content of 99%), chloride (content of 98.5%) is raw material, and water is tapped by tap water. Implementing the antimony, arside and pure base as a raw material as follows, the main steps are as follows:

[0094] (1) Oxidation of oxidation of water: set arsenic alkali residue and dissolved ingredient ratio of arsenine: sodium carbonate: water = 100: 25: 400, the thin-thin temperature of 95 ° C, three-stage elimination separation. First, according to arsenic acid: sodium percarbonate: water = 100: 10: 200, the mass ratio ingredients, mixed powder, slurry, slurry, arsenic, arsenic, arsenic, and arsenic, mixed tank In the first stage, the blending ratio of the puzzl...

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PUM

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Abstract

A method for preparing antimony oxide, arsenate, and soda ash from arsenic-alkali slag, which mainly includes the following steps: (1) oxidation water leaching separation; (2) leaching and separation of antimony-rich slag; (3) arsenic acid preparation Salt, soda ash. The invention has relatively simple process, less investment, good separation effect, large processing capacity, and can easily realize dust-free operation and no secondary pollution.

Description

Technical field [0001] The present invention relates to the field of comprehensive utilization of environmentally-friendly resource, and more particularly to a method of obtaining oxidation, arsenate, and pure alkaline based on arsenic aliithios. Background technique [0002] Arsenic aliki is a compound of sodium arsenate, sodium aluminate, sodium carbonate, and a certain amount of aluminosilicate mineral and lead, ruthenium. Smelting waste, sodium arsenate sodium arsenate and sodium arsenate and is easy to solute in water, which can easily lead to environmental pollution events, have been difficult to properly deal with solid hazardous waste to a certain extent, to a certain extent, to give healthy development of the antimony smelting industry. [0003] For the difficulty of handling arsenic alkali, domestic and foreign scientific and technological workers have continuously carry out a large number of research and practice, the various technical methods for the existing arsenic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G30/00C01G28/02C01G53/00C01G45/00C01D7/00C01D7/07C01D3/08C01D5/00C01D9/00
CPCC01D3/08C01D5/00C01D7/00C01D7/07C01D9/00C01G28/02C01G30/005C01G45/00C01G53/00C01P2006/80
Inventor 尹小林
Owner 长沙紫宸科技开发有限公司