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Method for descaling steel-making turbid circulation water

A technology of turbid circulating water and turbidity, applied in water softening, descaling and water softening, chemical instruments and methods, etc., to achieve the effect of strengthening scaling effect, reducing deposition, and high calcium tolerance

Inactive Publication Date: 2007-07-25
姚可佩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for descaling the turbid circulating water of steelmaking. Using this method to descale the turbid circulating water of steelmaking will not damage the production equipment, can reduce Ca ions in the circulating water, and solve the problem fundamentally. The problem of fouling, and its low cost, easy to clean, to solve the problems existing in the prior art

Method used

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Examples

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Embodiment Construction

[0010] Embodiment of the present invention: Add sodium carbonate to the sedimentation tank of the steelmaking turbid circulating water treatment system, and add the scale inhibitor and dispersant polyaspartic acid into the water, and add the flocculant polyaluminum chloride at the same time. Wherein polyaspartic acid is added according to the amount of 10 mg / liter.

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Abstract

The method of descaling steel-making turbid circulation water includes precipitation and separation of turbid circulation water in sedimentation tank, in which are added sodium carbonate to lower calcium hardness of water, descaling dispersant for descaling and dispersion, and flocculant to lower water turbidity. The present invention has high descaling effect and no damage to production equipment, can decrease calcium ion of water to eliminate scale radically, and has the advantages of low cost, easy cleaning, etc.

Description

Technical field: [0001] The invention relates to a method for removing scale from turbid circulating water in steelmaking, and belongs to the technical field of water treatment. Background technique: [0002] In the production of steelworks, since the CaO produced in the steelmaking process will continue to enter the turbid circulating water treatment system through the dust removal system, the Ca ions in the circulating water will continue to increase. Circulating operation, under the action of high temperature, calcium carbonate scale, calcium sulfate scale or calcium phosphate scale will be formed on the inner wall of water treatment pipelines and production equipment. The formation of scale will directly affect the cooling effect of circulating water on equipment and cause serious damage to production. Serious impact, and may cause damage to the equipment. [0003] At present, most steel mills generally use pickling to remove scale, but this pickling method is easy to d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/02C02F1/52C02F5/12
Inventor 姚可佩
Owner 姚可佩
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