Unshape fire resistant pouring material for coal-burning heating-furnace
A technology for refractory castables and coal-fired heating furnaces, applied in the field of unshaped refractory castables, which can solve the problems of affecting the heating effect, easy damage, and increased operating costs of fuel and gas boilers, so as to achieve a strong furnace arch structure and long service life long effect
Inactive Publication Date: 2009-01-07
杨国伟
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Problems solved by technology
[0002] In recent years, with the increasing energy consumption of human society, the price of oil and gas in the international and domestic markets has continued to rise, resulting in a substantial increase in the operating costs of fuel and gas boilers.
Units using fuel oil and gas-fired boilers are forced to find a new generation of boiler products that have lower operating costs and can meet the requirements of use to replace existing fuel and gas-fired boilers. At present, the furnace arches of existing coal-fired heating furnaces are mostly made of Made of bricks, easy to damage and affect the heating effect
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[0010] Such as figure 1 , figure 2 The unshaped refractory castable for coal-fired heating furnace is shown as the best real-time method. The coal-fired heating furnace has a furnace wall 2. Both sides of the furnace wall 2 are cast with an unshaped refractory castable in an arched shape. Unshaped refractory castable is poured at the connecting transition area and oblique corners between furnace arch 1, furnace wall 2 and arched furnace arch 1. The weight percentage of unshaped refractory castable is 15%-20% of high alumina cement. Fine powder is 15%, fine aggregate (1-3 mesh) is 15%-20%, medium aggregate (5-10 mesh) is 10%, coarse aggregate is 35%, and the balance is water. The combustion of the combustion chamber achieves the heating effect, strengthens the solidity of the overall structure, and will not damage the furnace arch due to long-distance transportation and long-term heating.
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The invention relates to the field of a casting material in indefinite form, in particular to a fireproof casting material in indefinite form used for a coal-fired furnace. The coal-fired furnace comprises a wall. Arched furnace arches in integrated structure are cast on the upper ends of two side surfaces of the wall with the fireproof casting material in indefinite form. Fireproof casting materials in indefinite form are cast and filled in the joint transition zone and the bevel between the furnace wall and the arched furnace arches. The fireproof casting material in indefinite form contains the following by weight: 15 to 20 percent of alumina cement, 15 percent of fine powder, 15 to 20 percent of fine aggregate (1 to 3 meshes), 10 percent of medium aggregate, 35 percent of coarse aggregate, and water in the balancing amount. The solidness of the integral structure is reinforced.
Description
Technical field [0001] The invention relates to the field of unshaped castables, in particular to an unshaped refractory castable for coal-fired heating furnaces. Background technique [0002] In recent years, with the increasing energy consumption of human society and the continuous rise of oil and gas prices in the international and domestic markets, the operating costs of oil-fired and gas-fired boilers have increased substantially. The units using oil and gas boilers are forced to find a new generation of boiler products that have lower operating costs and can meet the requirements of use to replace the existing oil and gas boilers. At present, most of the furnace arches of the existing coal-fired heating furnaces are used Bricks are easy to damage and affect the heating effect. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide an unshaped refractory castable for a coal-fired heating furnace. [0004] The technical so...
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IPC IPC(8): C04B35/66
Inventor 叶国清
Owner 杨国伟