Preparation method of siliceous hot repairing material with low cost and low water demand

Abstract

The invention relates to a preparation method of a siliceous hot repairing material with low cost and low water demand, and belongs to the field of refractory materials. The siliceous hot repairing material is prepared from 30-65 wt% of fused quartz, 15-40 wt% of silica, 10-20 wt% of waste silica bricks, 6-15 wt% of silica micro-powder, 1-6 wt% of a mineralizing agent, 4-10 wt% of a binding agent,1-5 wt% of a sintering aid and 0.1-1 wt% of a superplasticizer. The waste silicon bricks are used as a raw material, so that the material cost is obviously reduced; the construction water demand is 7-11%, so the secondary damage degree to a furnace wall is reduced; the siliceous hot repairing material has a high bonding strength with the silicon bricks, and has small corrosivity, and the siliceous hot repairing material and the silicon bricks have thermal expansion synchronism; and the product provided by the invention has the characteristics of good wear resistance, high softening temperature under load, good thermal shock stability, high wall-climbing rate and the like.

Description

technical field [0001] The invention relates to the preparation of a refractory material for coke ovens, in particular to a method for preparing a low-cost, low-water-demand siliceous hot-fill material, and belongs to the field of refractory materials. Background technique [0002] The coke oven carbonization chamber is the main component of the coke oven. The damage to the furnace wall of the carbonization chamber is mainly caused by the thermal stress, mechanical collision, extrusion, friction and gas The damage of the carbonization chamber leads to gas leakage and pollution of the environment, and the erosion of the furnace wall reduces the service life of the carbonization chamber and other hazards. [0003] At present, the existing repair methods mainly include wet gunning, semi-dry gunning and dry gunning for the damage of coke oven carbonization chamber. Among them, the amount of water added to the repair material used in wet gunning repair is 40-50%. During high-tem...

AI Technical Summary

Problems solved by technology

Compared with the wet gunning method, the semi-dry method requires less water, generally about 15%, and the secondary damage to the furnace wall during the gunning method is small, but there are still secondary damages