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Alkaline atmosphere refractory brick made from red mud

A refractory brick and alkaline technology, which is applied in the field of refractory bricks, can solve the problems of using at non-normalizing points, etc., achieve strong alkalization resistance, good effect, and eliminate the effect of alkalization loss

Inactive Publication Date: 2012-03-28
河南三兴热能技术有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is: domestic refractory bricks can only be used in non-normalizing point or non-building material kilns with low temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Put 70 kg of silica sol, 25 kg of zinc oxide, and 5 kg of alkaline water glass into the reaction kettle, raise the temperature to 95 degrees Celsius and stir for 45 minutes to react to prepare the inorganic adhesive.

[0012] Put 65 kilograms of phosphoric acid and 35 kilograms of high-activity magnesium oxide into the reaction kettle, raise the temperature to 110 degrees Celsius and stir for 120 minutes to prepare the phosphoric acid compound curing agent.

[0013] After drying, grinding and magnetically separating 100 kg of Bayer process alumina red mud, the required red mud has a moisture content of not more than 2%, a fineness of more than 300 mesh, and the iron oxide content of which is not more than 1%. The red mud filler is the industrial waste produced by the Bayer alumina production process, and the alumina red mud filler is obtained.

[0014] Mix 15 kg of inorganic binder, 10 kg of phosphate compound curing agent, and 75 kg of composite inorganic powder filler...

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PUM

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Abstract

The invention provides an alkaline atmosphere refractory brick made from red mud, wherein the refractory brick is suitable for being used under an alkaline atmosphere condition for a long time and used for changing the situation that alkaline refractory materials produced by foreign companies are used in the industry of the building materials, such as cement, glass and the like, in China for a long time, particularly, the red mud which is the alumina industrial waste is adopted as a main raw material, thus the waste is changed in wealth, the pollution of the alumina red mud to the environment is reduced, the characteristic that the red mud per se has higher content in inorganic alkali and gelatinizers, and the production cost of enterprises is reduced. The alkaline atmosphere refractory brick comprises the components of 15wt% of inorganic bond, 10wt% of phosphate compound curing agent and 75wt% of alumina red mud fillers, has a good use effect in an alkaline atmosphere environment below 1700 DEG C, can be used for reducing self alkalization losses by more than 98% compared with that of the traditional alkaline refractory material, and has cracking resistance.

Description

technical field [0001] The invention relates to a refractory brick, in particular to an alkaline atmosphere refractory brick made of red mud. Background technique [0002] Alkaline refractories are key materials that are inseparable from the firing zone, transition zone and glass kiln regenerator lattice body of the cement kiln. The quality of the alkaline refractory is one of the decisive factors affecting the service life and production efficiency of the kiln. . Therefore, without exception, all countries in the world regard the R&D and production of alkaline refractory materials as the main direction of attack to reflect their comprehensive level and strength. [0003] In contrast, the use effect of domestic alkaline refractory materials is not ideal, and high-end alkaline refractory materials are not as good as foreign products. On a large float glass kiln, the average service life of refractory materials is 2 to 3 years, including high-purity refractory bricks. In la...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 蔡磊
Owner 河南三兴热能技术有限公司