Lime sulfur agent for treating mercury-containing waste residues and preparation method thereof

A technology of lime sulfur agent and waste residue, which is applied in the field of treatment agents for mercury-containing waste residue treatment, can solve the problems of no lime sulfur agent found, and achieve the effect of promoting recovery rate, promoting development, and improving conversion ability

Active Publication Date: 2015-01-07
铜仁市万山区盛和矿业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the scenario of using lime sulfur in the chemical industry is also objective, but in the prior art, it has not been found to use lim

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A lime sulfur agent for treating mercury-containing waste residues, the raw materials of which are 2kg of quicklime, 1kg of sulfur powder, 9kg of water, and 0.5kg of sodium salt.

[0020] Wherein, the sulfur powder is a 300-mesh powder, and the sulfur powder is a sulfur salt powder in which elemental sulfur powder accounts for 90%.

[0021] The sodium salt is sodium hydroxide.

[0022] The preparation method of the lime sulfur agent for mercury-containing waste residue treatment, according to the above ratio, put water in the boiler, heat treatment at 70°C for 20 minutes, then add quicklime to it, and use a stirrer at 50r / Stir at a stirring speed of 1 min, and control the addition of quicklime in 1 hour. After the addition is complete, keep the stirring speed constant, and raise the temperature to 300°C in 20 seconds. At this time, add sulfur powder into the boiler under a constant temperature environment. Stirring while adding is adopted, and the adding time is contr...

Embodiment 2

[0024] A lime sulfur agent for treating mercury-containing waste residues, the raw materials of which are 4kg of quicklime, 3kg of sulfur powder, 11kg of water, and 0.7kg of sodium salt.

[0025] Wherein, the sulfur powder is a 400-mesh powder, and the sulfur powder is a sulfur salt powder in which elemental sulfur powder accounts for 99%.

[0026] The sodium salt is sodium lignosulfonate.

[0027] The preparation method of the lime sulfur agent used for the treatment of mercury-containing waste residues, according to the above ratio, put water in the boiler, heat treatment at 90°C for 30 minutes, then add quicklime to it, and use a stirrer at 90r / Stir at a stirring speed of min, and control the addition of quicklime in 3 hours. After the addition is completed, keep the stirring speed constant, and raise the temperature to 400°C in 30 seconds. At this time, add sulfur powder to the boiler under a constant temperature environment. Stirring while adding is adopted, and the add...

Embodiment 3

[0029] A lime sulfur agent for treating mercury-containing waste residues, the raw materials of which are 3kg of quicklime, 2kg of sulfur powder, 10kg of water, and 0.6kg of sodium salt.

[0030] Wherein, the sulfur powder is a 350-mesh powder, and the sulfur powder is a sulfur salt powder in which elemental sulfur powder accounts for 95%.

[0031] The sodium salt is sodium chloride.

[0032] The preparation method of the lime sulfur agent used for mercury-containing waste residue treatment, according to the above ratio, put water in the boiler, heat treatment at 80°C for 25 minutes, then add quicklime to it, and use a stirrer at 70r / Stir at a stirring speed of 1 min, and control the addition of quicklime in 2 hours. After the addition is completed, keep the stirring speed constant, and raise the temperature to 350°C in 25 seconds. At this time, add sulfur powder to the boiler under a constant temperature environment. Use the method of stirring while adding, and control the ...

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Abstract

The invention relates to the technical field of treatment agents for mercury-containing waste residues, and in particular relates to a lime sulfur agent for treating the mercury-containing waste residues and a preparation method thereof. The preparation method comprises the following steps: appropriately proportioning quick lime, sulfur powder, water and sodium salt, combining with a preparation process of the lime sulfur agent, and controlling process parameters in process steps to ensure that a relatively optimal structure morphology can be formed among quick lime, the sulfur powder, the water and the sodium salt, so that the performance of the lime sulfur agent can be improved to a highest extent, a transformation capacity of the lime sulfur agent on elemental mercury or mercury salt can be improved, and the recovery rate of recycling mercury from the mercury-containing waste residues can be promoted; and moreover, combining with the control of addition sequences of quick lime, the water, the sulfur powder and the sodium salt to ensure that the structure performance of the lime sulfur agent is relatively excellent, the lime sulfur agent and elemental mercury or the mercury salt can be converted to the highest extent, mercury sulfide complex ions can be formed, and the development of the comprehensive utilization and mercury recycling industries of the mercury-containing waste residues can be promoted.

Description

technical field [0001] The invention relates to the technical field of treatment agents for treating mercury-containing waste residues, in particular to a lime sulfur agent for treating mercury-containing waste residues and a preparation method thereof. Background technique [0002] Lime sulfur agent is prepared by mixing lime and sulfur powder; in the prior art, lime sulfur agent is mainly used in the agricultural field, and in the agricultural field, it is mainly used to mix it with Bordeaux mixture to prepare a killing agent. The insecticide used for killing insects is often in an emulsified state, that is, an emulsion. However, the performance of lime sulfur agent is multiple, for example, it shows alkalinity, can form complex ions with some metals, dissolve insoluble substances in the solution, especially react with elemental mercury or mercury salts to form sulfide Mercury with ions. However, the scenario of using lime sulfur in the chemical industry is also objectiv...

Claims

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Application Information

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IPC IPC(8): C22B43/00C22B7/00
CPCY02P10/20
Inventor 袁再六
Owner 铜仁市万山区盛和矿业有限责任公司
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