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An explosion-proof low-cement castable

A castable and cement technology, used in the field of unshaped refractories, can solve the problems of cracks or bulging, explosion, hydrogen burning in case of fire, etc., and achieve the effect of excellent anti-cracking performance.

Active Publication Date: 2016-01-20
TIANJIN BAISITE NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If used improperly, it will destroy the internal structure of the castable and cause cracks or bulges and other structural deterioration problems. In severe cases, it may also cause the danger of hydrogen burning and explosion in case of fire.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First, corundum aggregate, corundum matrix, high-alumina cement, metallic aluminum powder, and water are selected as reaction raw materials, wherein the particle size of corundum aggregate is 13 mm, the particle size of corundum matrix is ​​95 μm, and the particle size of metallic aluminum powder is 15 μm;

[0020] Second, the three reaction raw materials of corundum aggregate, corundum matrix, and high-alumina cement are batched according to the ratio of corundum aggregate: corundum matrix: high-alumina cement = 74:38:2.5, and then weigh 0.6% based on the above ingredients metal aluminum powder, and 5.4% water;

[0021] Third, first mix the corundum matrix and high alumina cement for 10-15 minutes, then add metal aluminum powder for fine mixing for 25-30 minutes, and finally add corundum aggregate and water and mix for 15-20 minutes to obtain castables for inspection.

Embodiment 2

[0023] First, corundum aggregate, corundum matrix, high alumina cement, metallic aluminum powder, and water are selected as reaction raw materials, wherein the particle size of corundum aggregate is 13 mm, the particle size of corundum matrix is ​​95 μm, and the particle size of metallic aluminum powder is 18 μm;

[0024] Second, the three reaction raw materials of corundum aggregate, corundum matrix, and high-alumina cement are batched according to the ratio of corundum aggregate: corundum matrix: high-alumina cement = 74:38:2.5, and then weigh 0.6% based on the above ingredients metal aluminum powder, and 5.4% water;

[0025] Third, first mix the corundum matrix and high alumina cement for 10-15 minutes, then add metal aluminum powder for fine mixing for 25-30 minutes, and finally add corundum aggregate and water and mix for 15-20 minutes to obtain castables for inspection.

Embodiment 3

[0027] First, corundum aggregate, corundum matrix, high alumina cement, metallic aluminum powder, and water are selected as reaction raw materials, wherein the particle size of corundum aggregate is 13 mm, the particle size of corundum matrix is ​​95 μm, and the particle size of metallic aluminum powder is 20 μm;

[0028] Second, the three reaction raw materials of corundum aggregate, corundum matrix, and high-alumina cement are batched according to the ratio of corundum aggregate: corundum matrix: high-alumina cement = 74:38:2.5, and then weigh 0.6% based on the above ingredients metal aluminum powder, and 5.4% water;

[0029] Third, first mix the corundum matrix and high alumina cement for 10-15 minutes, then add metal aluminum powder for fine mixing for 25-30 minutes, and finally add corundum aggregate and water and mix for 15-20 minutes to obtain castables for inspection.

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Abstract

The invention relates to an explosionproof low cement castable. The low cement castable is prepared through the following steps of: utilizing corundum aggregate, a corundum base material, high alumina cement and metal aluminum powder as main raw materials, adopting appropriate raw materials and a ratio thereof as well as a corresponding preparation method, and controlling the granularity and additive amount of the metal aluminum powder so as to obtain the low cement castable with excellent explosion proofness and strength.

Description

technical field [0001] The invention relates to the technical field of monolithic refractories, in particular to an explosion-proof low-cement castable with excellent anti-burst performance. Background technique [0002] The metallurgical industry is the main application field of monolithic refractories. The strength, burst resistance and other properties of amorphous refractories have a very important impact on improving the production efficiency and energy saving level of the metallurgical industry. [0003] The development of low-cement series castables can significantly improve the physical properties of castables, and the use effect is also significantly better than ordinary high-cement castables. However, increasing the density of castables will also cause disadvantages such as poor anti-burst performance and prolonged baking time, especially for large or super large prefabricated blocks. [0004] In order to improve the anti-burst performance of low-cement castables...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 孙长宏
Owner TIANJIN BAISITE NEW MATERIAL TECH