Aluminum dihydrogen phosphate-silicon carbide refractory ramming material and preparation method thereof

Abstract

A preparation method for an aluminum dihydrogen phosphate-silicon carbide refractory ramming material comprises the following steps: step one, preparing a base material: according to the mass percentage, weighing 30-50% of green silicon carbide sand with the particle size of No.24, 20-30% of green silicon carbide sand with the particle size of No.80, 10-20% of a green silicon carbide powder with the particle size of W80 and 5-10% of a green silicon carbide powder with the particle size of W7; and then pouring the weighed raw materials into a stirrer, and mechanically stirring and mixing for 2-3 minutes; step two, preparing a wet material: adding an industrial aluminum phosphate solution with the amount 5-10% of the total amount of the base material into the base material prepared in the step one, and continuing to stir; step three, ageing the material: sealing the wet material prepared by the step two in a sealed container, allowing air not to be left in the container, and ageing the material for 16-24 hours; and step four, blending the material: again adding an industrial aluminum phosphate solution with the amount 5-10% of the total amount of the base material into the wet material subjected to ageing treatment, stirring for 3-5 minutes, and thus obtaining the refractory ramming material for construction.

Description

technical field [0001] The invention relates to the field of preparation of refractory ramming materials, in particular to an aluminum dihydrogen phosphate silicon carbide refractory ramming material used as a furnace lining of entrained bed pulverized coal gasification equipment and a preparation method thereof. Background technique [0002] Refractory materials are basic materials in the field of high-temperature technology, and are widely used in a wide range of applications. The most common application is as structural materials and linings that resist high-temperature effects in various thermal equipment and high-temperature containers. However, according to different operating departments, even in different parts of the same equipment, the working conditions are not the same, so the requirements for refractory materials are also different. [0003] At present, in the domestic market, entrained bed pulverized coal gasification equipment has been widely used in asphalt m...

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Problems solved by technology

[0005] The object of the present invention is to provide a kind of aluminum dihydrogen phosphate silicon carbide refractory ramming material and its preparation method. Different refractory lining materials, especially the inside of the entrained bed pulverized coal gasification equipment needs the most suitable refractory ramming material as the inner lining

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