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Arsenic-containing waste slag solidified body and preparation method thereof

A technology of solidified body and waste residue, which is applied in the field of solidified body of arsenic-containing waste residue and its preparation, can solve the problems of environmental pollution and comprehensive utilization of arsenic-containing waste residue, and achieve the effects of easy environmental protection compliance, low cost, and easy engineering implementation

Inactive Publication Date: 2013-06-12
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to provide a production method and its solidified body specially for the safe solidification of arsenic-containing waste slag, so as to solve the problems of environmental pollution and comprehensive utilization of arsenic-containing waste slag

Method used

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  • Arsenic-containing waste slag solidified body and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] Example 1: The arsenic-containing waste slag solidified body is composed of arsenic-containing waste slag, curing agent, arsenic slag treatment agent, modifier, aggregate and water. smelting dust), 300 parts of curing agent (50 parts of blast furnace slag, 20 parts of fly ash, 10 parts of steel slag, 20 parts of tin metallurgical slag, 50 parts of lime, 150 parts of clinker), 10 parts of arsenic slag treatment agent (silicon 1 part of ash, 1 part of superfine fly ash, 5.4 parts of carbide slag, 1 part of kiln dust, 0.5 part of iron sulfate, 0.2 part of aluminum sulfate, 0.3 part of sodium phosphate, 0.2 part of borate, 0.4 part of sodium sulfate), modified 5 parts of agent (0.8 parts of polycarboxylic acid, 0.2 parts of humic acid, 2 parts of styrene-acrylic emulsion, 1 part of vinyl acetate emulsion, 1 part of silicon-acrylic emulsion), 600 parts of phosphorus slag aggregate.

[0034] The preparation method of the arsenic-containing waste slag solidified body is as fo...

Embodiment 2

[0046] Example 2: The arsenic-containing waste slag solidified body is composed of arsenic-containing waste slag, curing agent, arsenic slag treatment agent, modifier, aggregate and water. 90 parts of smelting dust removal dust, 10 parts of arsenic iron slag containing 2.0% arsenic), 45 parts of curing agent (22 parts of fly ash, 2 parts of calcined coal gangue, 2 parts of calcined clay, 2 parts of calcined red mud, 2 parts of copper slag 30 parts in total, 15 parts of clinker), 60 parts of arsenic slag treatment agent (4 parts of silica fume, 5 parts of superfine fly ash, 30 parts of kiln dust, 10 parts of white mud for papermaking, 5 parts of calcium carbonate, 5 parts of dolomite , 1 part of iron sulfate), 0.5 part of modifier (0.2 part of polycarboxylic acid, 0.3 part of styrene-acrylic emulsion), 30 parts of quartz sand aggregate.

[0047] The preparation method of the arsenic-containing waste slag solidified body is as follows:

[0048] 1. Raw material processing

[...

Embodiment 3

[0059] Example 3: The solidified body of arsenic-containing waste slag is composed of arsenic-containing waste slag, curing agent, arsenic slag treatment agent, modifier, aggregate and water. 80 parts of zinc smelting dust, 20 parts of desulfurized gypsum containing 15% arsenic), 110 parts of curing agent (5 parts of blast furnace slag, 43 parts of phosphorus slag, 30 parts of lime, 32 parts of clinker), 30 parts of arsenic slag treatment agent (5 parts of silica fume, 4.5 parts of caustic soda, 20 parts of sodium silicate, 0.3 parts of sodium phosphate, 0.2 parts of borate), 2.5 parts of styrene-acrylic emulsion modifier, 315 parts of lead-zinc metallurgical waste residue aggregate.

[0060] The preparation method of the arsenic-containing waste slag solidified body is as follows:

[0061] 1. Raw material processing

[0062] 1) Treatment of arsenic-containing waste residues (substances are measured in parts by mass):

[0063] Take 80 parts of lead-zinc smelting dust remov...

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Abstract

The invention relates to a solidified body of arsenic-containing waste residue and a preparation method thereof, belonging to the technical field of environmental protection. After the arsenic-containing waste residue is processed, it is mixed with a curing agent, modifier, aggregate, water, etc. prepared from industrial waste residue and mineral stimulating materials. After mixing, molding, and curing of the mixture, it becomes a solidified body with high strength and low arsenic leaching rate. Compared with the prior art, the invention has the advantages of simple solidification process, low cost, safety and reliability, and solves the problem of arsenic pollution of arsenic-containing waste residue.

Description

technical field [0001] The invention relates to a solidified body of arsenic-containing waste residue and a preparation method thereof, belonging to the technical field of environmental protection. Background technique [0002] Arsenic compounds are a class of chemical substances that are highly toxic to organisms, and their lethal dose for acute poisoning to humans is 0.1-0.2g (as As 2 o 3 It is an internationally recognized carcinogenic, mutagenic and teratogenic factor. [0003] my country is a country that suffers from arsenic damage very seriously. There are nearly 20 million people in 10 provinces affected by the disaster, and there are 2.0×10 7 hm 2 Arsenic pollution in cultivated land has a tendency to spread rapidly from Hunan, Yunnan, Guangxi, Guizhou, Shanxi, Inner Mongolia, Xinjiang, and Taiwan, where traditional arsenic pollution is severe, to North China, Central China, Northeast China and even the whole country. In recent years, arsenic pollution has occu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00C04B28/00C04B7/24C04B18/30
CPCC04B28/085C04B18/02Y02W30/91C04B14/04C04B14/06C04B14/26C04B18/061C04B18/08C04B18/141C04B18/144C04B18/145C04B18/146C04B18/241C04B20/0076C04B20/026C04B22/0013C04B22/064C04B22/142C04B22/148C04B22/149C04B22/16C04B24/24C04B24/2641C04B40/0057C04B40/024C04B2103/10
Inventor 张召述张洪王炜黄宗凯夏举佩何政兵
Owner KUNMING UNIV OF SCI & TECH
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