Environment-friendly stemming for blast furnace taphole and preparation method thereof

Abstract

The invention discloses an environment-friendly stemming for a blast furnace taphole and a preparation method thereof, which is prepared by the following raw materials according to weight percentage content: 35-50% of bauxite or hard clay or fused alumina with thickness of 0.2-3mm, 1-5% of modified powder resin, 1-5% of high-temperature pitch, 3-8% of inorganic phosphate, 1-20% of silicon carbide, 10-20% of coke powder, 3-10% of sericite, 2-8% of cyanite and 3-8% of tar oil. The preparation method comprises the following steps: weighting each raw material according to the above formula, adding into a heating stirrer for stirring and mixing and molding by using a friction press after mixing. The invention adopts the mixture of organism and inorganic substance as a binder to prepare the stemming, thus greatly reducing the component content of tar oil which pollutes environment, being favor of environmental protection and having remarkable social benefit, and can be hardened quickly.

Description

1. Technical field: [0001] The invention relates to a taphole clay for a blast furnace taphole, in particular to an environment-friendly taphole clay for a blast furnace taphole and a preparation method thereof. 2. Background technology: [0002] With the rapid development of my country's iron and steel industry, large and medium-sized ironmaking blast furnaces are mostly used in the production of the iron and steel industry, and large and medium-sized blast furnaces are developing in the direction of large-scale, long-life, and intensified smelting. At the same time, people are paying more and more attention to environmental protection, requiring the clay to be environmentally friendly and conducive to environmental protection. At present, the commonly used gun mud has low high-temperature strength, poor slag erosion resistance, and is not resistant to the erosion of slag and molten iron. It expands holes quickly during use and cannot meet the requirements of blast furnace f...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, large-scale blast furnaces in my country generally use anhydrous taphole mud with tar as a binder. This kind of taphole clay has good slag erosion resistance due to the use of high-quality high-purity raw materials and carbonaceous raw materials as a binder. , can prolong the tapping time of the iron hole and reduce the number of tapping times, but its binder tar will produce smoke during use, which will deteriorate the working environment, affect the physical and mental health of employees, and bring adverse effects on production and use.

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