Anhydrous stemming for blast furnace tap hole

Abstract

The invention discloses anhydrous stemming for a blast furnace taphole. The anhydrous stemming is prepared from torpedo ladle lining bricks, molten iron ditch castable, silicon carbide plates, siliconcarbide carbon bricks, sliding plates, and silicon carbide-mullite bricks which are recycled and finished product raw materials including pyrophyllite, silicon iron nitride, high-temperature asphaltpowder, clay powder and a mixed oil binding agent according to a certain weight part ratio. According to the material and characteristics of the anhydrous stemming, recycled refractory materials madeof similar materials are adopted in a large proportion to replace original refractory materials; meanwhile, non-refractory raw materials such as coke particles and sericite which must be added duringtraditional anhydrous stemming production are omitted, the cost of anhydrous stemming materials is reduced, precious raw mineral resources are saved, meanwhile, damage of industrial solid waste emission to the ecological environment is reduced, and the national resource recycling policy is met. Stokehole practical application shows that the anhydrous stemming product prepared by the method has better application effect than an existing anhydrous stemming product.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for use of less expensive or unreusable metallurgies instead of regular ones when producing conventional hydraulically driven guns without causing environmental concerns such as disposal costs associated therewith. Additionally, this new type of gun uses recyclically reused refractiles ratherthan older natural bricks, reducing manufacturing costs while maintaining their quality. Overall, these technical benefits improve efficiency and performance of the firefighting process.

Problems solved by technology

This patented technical problem addressed in this patents relates to finding ways to reuse existing refractories such as crucibles made from aluminum oxynitride (AlON) ceramic during melter operations without causing environmental concerns due to their harmful effects over human health.

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