Coating material for furnace wall of coke furnace carbonization chamber and using method thereof

Abstract

The invention provides a coating material for a furnace wall of a coke furnace carbonization chamber and a using method thereof. The using method comprises the following steps of: 1) proportioning 35 to 50 percent of quartz powder, 5 to 15 percent of zircon, 5 to 15 percent of clay, 1 to 3 percent of alumina micro-powder, 10 to 15 percent of feldspar, 10 to 25 percent of lepidolite, 2 to 6 percent of sodium silicate, 1 to 4 percent of boric acid or borax and 1 to 3 percent of barium chloride or barium sulfate according to weight percentage to obtain a mixture; 2) uniformly grinding the mixture in a ball mill to obtain the coating material; 3) adding water into the coating material and stirring to obtain uniform slurry, and spraying the uniform slurry onto a furnace wall lining material; and 4) preserving the heat at the temperature of between 1,200 and 1,300 DEG C for 1 to 2 hours to sinter the furnace wall lining material. By the coating material and the using method, a compact surface layer can be formed on the furnace wall lining material, charcoal formation on the surface of the furnace wall can be prevented or alleviated, and the prolonging of the life of the furnace wall is facilitated; therefore, the coating material and the using method have good popularization and application prospects.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a coke oven carbonization chamber furnace wall coating material and an application method thereof. Background technique [0002] The carbonization chamber is the most important part of the coke oven, because coal is heated (carbonized) in the carbonization chamber to produce hydrocarbons and coke mainly composed of gas. The furnace wall of the carbonization chamber is made of silica bricks. When coal is used to make coke, the carbonized gas in the coke oven is prone to thermal decomposition, resulting in carbon deposition on the surface of refractory bricks. If the amount of carbon deposition is too much, it will not only reduce the effective volume of the carbonization chamber, but also increase the resistance of the coke when pushing the coke. As a result, it is difficult to push coke and damage the furnace wall. Therefore, excessive carbon deposition...

AI Technical Summary

Problems solved by technology

However, there is still no good solution to the serious problem of carbonization on the furnace wall of the carbonization chamber of Baosteel's coke oven, especially the serious problem of carbonization on the furnace head. It can only be fired to remove graphite, which aggravates the damage to the furnace wall.

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