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Abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven

A fiber-reinforced, dry-quenched coke oven technology, applied in the field of wear-resistant reinforced pouring prefabricated blocks, can solve the problems of frequent pouring and fast wear rate in the cooling section, reduce downtime for maintenance, improve burst resistance, and reduce maintenance Effect

Inactive Publication Date: 2009-06-10
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wear rate of mullite bricks is fast, which leads to frequent maintenance and pouring in the current cooling section. Often after overhaul, recasting maintenance is required after one annual repair cycle, so it is urgent to improve the overall wear resistance of this part

Method used

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  • Abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven
  • Abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven

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Embodiment Construction

[0022] As we all know, cement as a cementitious material is the main reason for the strength of low-cement castables. The addition amount is less than 4%, the strength is too low, and the wear resistance is not good; the addition amount is higher than 10%, the CaO brought into the cement is too much, and it is easy to form more low-melting feldspar (2CaO·Al2O3· SiO2, MP1590°C), melonite (CaO·Al2O3·2SiO2, MP1550°C). Therefore the cement content of the present invention is 4-10%.

[0023] When there is a water reducer, silica fume, α-Al 2 o 3 The presence of such ultrafine powder can make the castable have high fluidity under low moisture, which has a great influence on the strength and wear resistance of the castable. Silica fume, α-Al 2 o 3 If the addition amount is lower than 3%, the wear resistance is not good; if it is higher than 10%, there is no practical significance for improving the fluidity and strength of the castable. Therefore, silica fume, α-Al of the presen...

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Abstract

The invention relates to a dry quenching furnace, in particular to an abrasion-resistant reinforced precast block for the dry quenching furnace. The abrasion-resistant steel fiber reinforced precast block is formed by roasting the raw materials comprising the following compositions: 4 to 10 percent of cement, 3 to 10 percent of silica fume, 3 to 10 percent of alpha-Al2O3, 5 to 10 percent of SiC, and the balance being refractory aggregates. The precast block has good strength and low wear rate and reduces the maintenance work and the cost.

Description

technical field [0001] The invention relates to dry quenching coke ovens, in particular to a wear-resistant and reinforced pouring prefabricated block for dry quenching coke ovens. Background technique [0002] The inner lining of the CDQ coke oven body is composed of the furnace mouth, charging section, pre-storage section, flue and cooling section. The cooling section is one of the key parts that affect the service life. The CDQ cooling section is the basic The requirements are high strength, wear resistance and good thermal shock stability. [0003] At present, mullite bricks (mullite clay bricks) are used as the lining bricks of the working layer in this part of CDQ equipment at home and abroad. The wear rate of mullite bricks is fast, which leads to frequent maintenance and pouring of the cooling section at present. Often, recasting and maintenance are required after an annual repair cycle after overhaul, so it is urgent to improve the overall wear resistance of this p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 励军曹洪深鲍戟金宝徐志栋宋飞潘德华
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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