CN102151690B - Method for treating arsenic sulfide residue - Google Patents
Method for treating arsenic sulfide residue Download PDFInfo
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- CN102151690B CN102151690B CN 201110024560 CN201110024560A CN102151690B CN 102151690 B CN102151690 B CN 102151690B CN 201110024560 CN201110024560 CN 201110024560 CN 201110024560 A CN201110024560 A CN 201110024560A CN 102151690 B CN102151690 B CN 102151690B
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Abstract
The invention discloses a novel method for treating arsenic sulfide residue, belonging to the field of the treatment of hazardous wastes. In allusion to the deficiencies of the existing curing drugs, such as large compatibilization ratio, difficult landfill and the like, the invention discloses a method for treating arsenic sulfide residue via a stabilization drug; and by means of the method, the stabilization drug can have complicated physical-chemical reaction with the arsenic sulfide residue so that the leaching toxicity of the arsenic is reduced to the inlet requirement of hazardous waste landfill sites. The method comprises the following steps: adding inorganic flocculating agent solution in the arsenic sulfide residue and mixing evenly; adding a solid powder adsorbent and mixing evenly; and finally adding asbestos wool to mix. According to the method provided by the invention, the process flow is simple, the operability is strong, the effect is remarkable, and the method is suitable for the treatment of arsenic-containing hazardous wastes.
Description
Technical field
The present invention relates to a kind of useless processing method of arsenic danger, particularly a kind of method of processing arsenic sulfide slag of containing.
Background technology
In chemical industry, metallurgical production process, usually can adopt sulphide precipitation to remove arsenic in the waste liquid, produce arsenic sulfide slag.Because arsenic sulfide slag is difficult to detoxifcation and measures the mode that little, general enterprise can take to hoard storage and process.But As time goes on, the stacking amount of arsenic sulfide slag is increasing, thereby how to process these arsenic sulfide slags and become the unavoidable problem of enterprise.At present, curing technology commonly used is processed arsenic sulfide slag both at home and abroad, but because the cement adding amount is large, cause cost of disposal high, and the increase-volume after processing is unfavorable for landfill than large.
Some enterprises adopt the arsenic trioxide in dry method or the Wet technique recovery arsenic sulfide slag.The technical maturity of pyrogenic attack arsenic sulfide slag, flow process are short, but operating environment is poor, workman's health is had a significant impact, and easily air is caused secondary pollution.The wet-treating arsenic sulfide slag does not produce dust, energy consumption is low, but flow process is complicated, cost recovery is higher.And because the manufacturer of arsenic trioxide is many, Market competition, economic benefit is low.
Summary of the invention
The objective of the invention is safe handling and dispose arsenic sulfide slag, reduce the secondary pollution that produces to external world in the processing procedure, reduce simultaneously processing cost and increase-volume ratio.
Technical scheme of the present invention:
A kind of method of processing arsenic sulfide slag, its concrete steps are:
(1) in arsenic sulfide slag, adds inorganic flocculating agent liquid, stirred 0.5～1 hour;
(2) to the mud of step (1) gained, add the pressed powder adsorbent, stirred 0.5～1.5 hour;
(3) to the mud of step (2) gained, add asbestos wool, stirred 0.5～1 hour;
(4) to the mixture of step (3) gained, natural curing 1～7 day.
In step (1), the inorganic flocculating agent liquid that adds is one or several mixed liquors in polyaluminium sulfate, aluminium polychloride, bodied ferric sulfate, poly-ferric chloride, poly-metasilicate Flocculant:, poly-phosphorus iron chloride, poly-phosphorus aluminium chloride, the ferric-polysilicate, and addition is 5～30%.
In step (2), the pressed powder adsorbent of adding is a kind of or two kinds of mixed-powders in iron powder, the light magnesium oxide, and addition is 20～80%.
In step (3), the asbestos wool of adding is inferior grade or discarded asbestos, and addition is 10～40%.
Inorganic flocculating agent liquid is used for adsorbing the arsenic ion that contains in the arsenic sulfide slag, makes it keep stable state.Suitably increase consumption, the arsenic ion of leaching is adsorbed by inorganic flocculating agent again, thereby guarantee long-time stability.Solid absorbent can suitably improve the intensity of handled thing when stablizing arsenic ion, be conducive to landfill.
Asbestos wool is the mineral wool that a kind of cost is low, intensity is high, once is widely used in many industrial circles.In the last few years, medical research and asbestos mining site actual conditions showed that asbestos wool had very strong carcinogenesis to human body.Thereby in some developed countries such as the U.S., asbestos deposit has been forbidden to be exploited.For the waste and old asbestos that some industries produce, usually can take the mode of solidify ﹠ bury to process.In arsenic sulfide slag, add the intensity that asbestos wool can take full advantage of its fiber, strengthen the intensity of firming body, played the purpose of waste recycling.In addition, experiment shows that asbestos wool counterweight metal has certain adsorption effect.Thereby, add the toxicity that asbestos wool can also suitably reduce arsenic sulfide slag.
The invention has the beneficial effects as follows that can effectively reduce arsenic sulfide slag etc. and contain the useless Leaching of arsenic danger, the danger after the processing is useless can directly to enter the danger wastes landfill yard, has reduced the harm to environment.The present invention has reduced the increase-volume ratio after the arsenic sulfide slag processing, has reduced the landfill cost.
The specific embodiment:
The invention will be further described below in conjunction with embodiment.
Embodiment 1
Take by weighing 5g bodied ferric sulfate, 10g aluminium polychloride, join in the 40g water and stir.The above-mentioned mixed liquor that stirs is joined in the arsenic sulfide slag of 200g, stirred 0.5 hour.Then, add 50g iron powder and 20g light magnesium oxide mixed-powder, stirred 0.5 hour.At last, add the 40g asbestos wool, stirred 0.5 hour.The solid waste that has stirred is encased in the valve bag, at room temperature placed 3 days.The Leaching testing result shows, the Leaching of arsenic is reduced to 1.78mg/L after the processing from the 800mg/L of former mud, reaches the requirement of marching into the arena of danger wastes landfill yard.
Embodiment 2
Take by weighing 5g bodied ferric sulfate, 10g aluminium polychloride, join in the 40g water and stir.The above-mentioned mixed liquor that stirs is joined in the arsenic sulfide slag of 200g, stirred 0.5 hour.Then, add the 60g iron powder, stirred 0.5 hour.At last, add the 30g asbestos wool, stirred 0.5 hour.The solid waste that has stirred is encased in the valve bag, at room temperature placed 3 days.The Leaching testing result shows, the Leaching of arsenic is reduced to 1.26mg/L after the processing from the 800mg/L of former mud, reaches the requirement of marching into the arena of danger wastes landfill yard.
Claims (4)
1. method of processing arsenic sulfide slag is characterized in that it may further comprise the steps:
(1) in arsenic sulfide slag, adds inorganic flocculating agent liquid, stirred 0.5～1 hour;
(2) to the mud of step (1) gained, add the pressed powder adsorbent, stirred 0.5～1.5 hour;
(3) to the mud of step (2) gained, add asbestos wool, stirred 0.5～1 hour;
(4) to the mixture of step (3) gained, natural curing 1～7 day.
2. a kind of method of processing arsenic sulfide slag according to claim 1, it is characterized in that in step (1), the inorganic flocculating agent liquid that adds is one or several mixed liquors in polyaluminium sulfate, aluminium polychloride, bodied ferric sulfate, poly-ferric chloride, poly-metasilicate Flocculant:, poly-phosphorus iron chloride, poly-phosphorus aluminium chloride, the ferric-polysilicate, and addition is 5～30%.
3. a kind of method of processing arsenic sulfide slag according to claim 1 is characterized in that in step (2), and the pressed powder adsorbent of adding is a kind of or two kinds of mixed-powders in iron powder, the light magnesium oxide, and addition is 20～80%.
4. a kind of method of processing arsenic sulfide slag according to claim 1 is characterized in that in step (3), and the asbestos wool of adding is inferior grade or discarded asbestos, and addition is 10～40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110024560 CN102151690B (en) | 2011-01-20 | 2011-01-20 | Method for treating arsenic sulfide residue |
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| CN 201110024560 CN102151690B (en) | 2011-01-20 | 2011-01-20 | Method for treating arsenic sulfide residue |
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| CN102151690A CN102151690A (en) | 2011-08-17 |
| CN102151690B true CN102151690B (en) | 2013-04-03 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174634B (en) * | 2014-08-15 | 2015-12-30 | 江苏理工学院 | The stable curing method of highly acid arsenones waste residue |
| CN104668266B (en) * | 2014-12-03 | 2017-03-15 | 厦门紫金矿冶技术有限公司 | A kind of method for innocent treatment of waste residue of endangering containing arsenic |
| CN106621169A (en) * | 2016-12-30 | 2017-05-10 | 深圳市能源环保有限公司 | Waste incineration fly ash stabilization chemical and preparing method thereof |
| CN106823238B (en) * | 2017-02-24 | 2020-02-14 | 中南大学 | Hydrothermal stable curing treatment method for arsenic sulfide slag |
| CN108188145B (en) * | 2017-12-28 | 2020-09-25 | 中国科学院沈阳应用生态研究所 | Method for stabilizing arsenic-containing waste residue |
| CN110394354A (en) * | 2019-08-02 | 2019-11-01 | 紫金铜业有限公司 | A kind of method that the transition of Copper making arsenic sulfide slag is combined solid arsenic |
| CN114378092B (en) * | 2021-12-29 | 2023-09-08 | 中南大学 | Method for oxidation stabilization treatment of arsenic sulfide slag and application thereof |
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| US7736291B2 (en) * | 2006-03-25 | 2010-06-15 | Forrester Keith E | Method for stabilization of heavy metals and odor control with dicalcium phosphate dihydrate powder |
| JP2008214600A (en) * | 2007-03-04 | 2008-09-18 | Yasuhiro Sakota | Heavy metal disposal material and soil improvement agent to reduce and remove heavy metal and food waste water, and heavy metal removal method |
| WO2009011076A1 (en) * | 2007-07-13 | 2009-01-22 | Dowa Metals & Mining Co., Ltd. | Method of treating nonferrous smelting intermediate product containing arsenic |
| JP5188298B2 (en) * | 2007-08-09 | 2013-04-24 | Ｄｏｗａメタルマイン株式会社 | Method for processing non-ferrous smelting intermediates containing arsenic |
| CN101554613B (en) * | 2009-05-19 | 2011-06-29 | 房志强 | Method for recycling industrial waste sulfate slag |
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Owner name: HANGZHOU DADI ENVIRONMENTAL PROTECTION ENGINEERING Free format text: FORMER OWNER: HANGZHOU DADI ENVIRONMENT PROTECTION CO., LTD. Effective date: 20130923 |
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Effective date of registration: 20130923 Address after: Hangzhou City, Zhejiang province 310020 Phoenix Road No. 358 five days Xinglong Building Block B room 1302 Patentee after: HANGZHOU DADI ENVIRONMENTAL PROTECTION ENGINEERING CO., LTD. Address before: Hangzhou City, Zhejiang province 310020 Phoenix Road No. 358 five days Xinglong tower B 13 floor Patentee before: Hangzhou Dadi Environmental Protection Co.,Ltd. |
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Address after: Hangzhou Jianggan District City, Zhejiang province 310020 days Xinglong Building B, 1302 Patentee after: China (Hangzhou) Co., Ltd. Address before: Hangzhou City, Zhejiang province 310020 Phoenix Road No. 358 five days Xinglong Building Block B room 1302 Patentee before: HANGZHOU DADI ENVIRONMENTAL PROTECTION ENGINEERING CO., LTD. |