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Waterproofing treatment method for magnesia-calcium brick

A treatment method, the technology of magnesia-calcium bricks, which is applied in the field of refractory material production, can solve the problems of not being applied to industrial production, etc., and achieve the effects of easier storage, increased bulk density, and improved hydration resistance

Inactive Publication Date: 2017-07-07
海城利尔麦格西塔材料有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of these studies are currently in the laboratory test stage and have not been applied to industrial production.

Method used

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  • Waterproofing treatment method for magnesia-calcium brick

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Embodiment Construction

[0016] A waterproof treatment method for magnesia-calcium bricks according to the present invention. The magnesia-calcium bricks are made of the following raw materials in proportions by weight: 20 to 30 parts of magnesia with a particle size of 2 mm ≤ 4 mm, magnesia with a particle size of 1 mm ≤ 2 mm 8-12 parts of sand, 11-15 parts of magnesia with 0mm≤particle size2 o 3 2 to 5 parts of powder; 2 to 5 parts of binder;

[0017] The production process of magnesia-calcium bricks: put magnesia with 2mm≤particle size2 o 3 Powder, kneading for 5-15 minutes; discharging, molding, heat treatment, sorting;

[0018] Waterproof treatment of magnesia-calcium bricks: put the selected magnesia-calcium bricks in a closed container, add waterproofing agent and soak for 2-4 hours, and add 0.1-0.3MPa / cm 2 pressurized penetration; the waterproofing agent is a mixed solution of organosilicon, acetylacetone, and silicate; the proportions of each component are: 85-95 parts of organosilicon; 4-8...

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Abstract

The invention relates to a waterproofing treatment method for a magnesium-calcium brick. The magnesium-calcium brick is formed by magnesite having a plurality of particle sizes, fused magnesite, alpha-Al2O3 powder and a binding agent. Waterproofing treatment is carried out after mixing, discharging, forming, heat treatment and sorting. The waterproofing treatment process for magnesium-calcium bricks is as follows: putting sorted magnesia-calcium bricks into a closed container, adding a waterproofing agent thereto for soaking for 2-4 hours, and simultaneously applying an external pressure of 0.1-0.3 MPa / cm2 for pressurized permeation, wherein the waterproofing agent is a mixed solution of organosilicon, acetyl acetone and silicate ester; and taking out the magnesia-calcium bricks after the completion of soaking for natural airing or drying. According to the invention, by optimizing the raw material composition of the magnesia-calcium bricks and employing the waterproofing agent for pressurized permeation, the waterproof performance of the magnesium-calcium bricks can be greatly improved to achieve easier preservation, transportation and storage of the magnesium-calcium bricks, thereby providing favorable conditions for promotion and application of the magnesium-calcium bricks.

Description

technical field [0001] The invention relates to the technical field of refractory production, in particular to a water-repellent treatment method for magnesia-calcium bricks. Background technique [0002] Magnesium-calcium refractory is a kind of basic refractory material, which has been used as the lining material of steelmaking converter since the early 1960s, and has contributed to the development of my country's converter steelmaking industry. By the end of the 1980s, due to the promotion and application of magnesia-calcium bricks, the amount of magnesia-calcium refractory materials decreased sharply and was almost eliminated. Since the beginning of this century, with the rapid development of stainless steel and clean steel production in China, various magnesia-calcium refractory materials have been re-developed with their unique performance (the function of purifying molten steel), lower prices and advantages in environmental protection. be valued. At present, it has ...

Claims

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Application Information

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IPC IPC(8): C04B35/043C04B35/63C04B35/634C04B41/82
Inventor 王健骁王新杰张义先尹斌金钊
Owner 海城利尔麦格西塔材料有限公司
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