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Method and system for online scale inhibition, biocidal and scale removal of continuous casting crystallizer

A continuous casting mold, biocide and descaling technology, applied in the field of metallurgy, can solve the problem of uneven heat dissipation

Active Publication Date: 2021-04-09
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problem of uneven heat dissipation caused by fouling on the surface of continuous casting crystallizers in the prior art, the present invention provides a method and system for online scale inhibition, biocidal and descaling of continuous casting crystallizers to realize the On-line scale inhibition, biocidal and descaling, to achieve long-term continuous steel casting, improve the continuous steel casting capacity of domestic continuous casting crystallizer, in the water treatment system, it can realize a new mode of adding less or no medicine, Create a green and environmentally friendly new way for the steelmaking and continuous casting system in the metallurgical industry in the application of water treatment technology

Method used

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  • Method and system for online scale inhibition, biocidal and scale removal of continuous casting crystallizer

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Embodiment 1

[0024] The present invention is a method for on-line scale inhibition, killing and descaling of continuous casting crystallizers, which comprises the following steps:

[0025] Step a, send high-concentration ozone water into the pipeline connected to the water inlet end of the continuous casting crystallizer and dilute it with the water in the pipeline, then enter the continuous casting crystallizer with the diluted ozone water along the water flow direction in the pipeline, pass The diluted ozone water treats the fouling layer on the surface of the continuous casting crystallizer; in this step, the high-concentration ozone water is a dilution of the conventional continuous casting crystallizer that needs to be treated and the scaling layer in the continuous casting crystallizer. As far as the concentration of ozone water is concerned, it is generally based on 10mg / l, and its concentration can be adjusted according to actual conditions, such as the size of the continuous castin...

Embodiment 2

[0030] Such as figure 1 As shown, the present invention is a continuous casting crystallizer on-line scale inhibition, killing and scale removal system, which includes a continuous casting crystallizer 3, a main water inlet pipeline 9, a main water outlet pipeline 16, an ozone dosing device 1, and a pipeline mixer 2. The first ozone concentration detector 7 and the second ozone concentration detector 8; the water inlet end and the water outlet end of the continuous casting crystallizer 3 are respectively connected with the main water inlet pipe 9 and the main water outlet pipe 16 through pipelines; The pipeline mixer 2 is arranged on the pipeline connected with the water inlet end of the continuous casting crystallizer 3; the ozone dosing device 1 is connected with the pipeline mixer 2 through the pipeline; the first ozone concentration detector 7 is arranged on the continuous casting crystallizer On the pipeline between the water inlet of the device 3 and the pipeline mixer 2...

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Abstract

The invention discloses a method and system for on-line scale inhibition, biocidal and scale removal of a continuous casting crystallizer. The method includes: a. Adding high-concentration ozone water into the water inlet pipe of the continuous casting crystallizer to dilute it and enter it along the direction of water flow; Continuous casting crystallizer; b. Conduct online detection of ozone water concentration on the pipelines connected to the water inlet and outlet of the continuous casting mold, and adjust the addition of high-concentration ozone water in real time according to the detection results of ozone water concentration at the water inlet and water outlet ; c. Send the ozone water passing through the continuous casting crystallizer from the water outlet of the continuous casting crystallizer to the main water outlet pipe for discharge; d. Wipe off the residual soft scaling layer on the surface of the continuous casting crystallizer. The application of the present invention can realize online scale inhibition, killing and descaling of domestic continuous casting crystallizers, realize long-period continuous steel casting, increase the steel throughput of continuous casting steel in domestic continuous casting crystallizers, have low operating costs, strong practicability, and can It is a new mode to achieve less or no dosing in the water treatment system of the metallurgical industry.

Description

technical field [0001] The invention belongs to the field of metallurgy, and relates to continuous casting in the metallurgical industry, a section steel production process and a water treatment system, in particular to production interruptions and efficiency reductions in cast steel production interruption and efficiency reduction caused by continuous casting of crystallizers in the production process of metallurgical continuous casting due to fouling of cooling surfaces of crystallizers technology solutions. Background technique [0002] Metallurgical continuous casting technology was introduced into China from abroad in the 1980s. Its technology has changed the backward technology of traditional steel casting die casting, and realized the cast steel products with many specifications, large output and high yield. Although the continuous casting technology is quite mature, its work efficiency is still restricted by various factors. Taking a billet continuous casting mold as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B08B3/08C02F5/08C02F1/50B22D11/055B08B1/00
CPCC02F1/50C02F5/08B22D11/055B08B1/143
Inventor 高峰王光亚钱晓斌吴立超董建平
Owner MAANSHAN IRON & STEEL CO LTD
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