Anhydrous stemming

An anhydrous taphole clay and particle size technology, applied in the field of refractory materials, can solve the problems of poor slag resistance, high temperature resistance and erosion resistance, burnt out equipment in front of the furnace, wet iron mouth and other problems, and achieve excellent erosion resistance, The effect of prolonging the tapping time and fast coking
CN106946554AActive Publication Date: 2017-07-14巩义市顺祥耐材有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
巩义市顺祥耐材有限公司
Publication Date
2017-07-14

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Abstract

The invention discloses an anhydrous stemming, which is composed of the following raw materials in percentage by weight: 7 to 10% of coke foam with a particle size of 0 to 2 mm; 5 to 10% of sericite with a particle size of 200 meshes; 3 to 5% of alumina, 5 to 10% of silicon carbide with a particle size of 200 meshes, 10% of high aluminum bauxite with a particle size of 1 to 3 mm; 10 to 15% of high aluminum bauxite with a particle size of 0 to 1 mm; 5 to 10% of high aluminum bauxite with a particle size of 200 meshes; 5 to 10% of brown aluminum oxide with a particle size of 200 meshes; 2 to 4% of metal silicon powder with a particle size of 200 meshes; 4 to 6% of asphalt powder, 2 to 4% of kyanite with a particle size of 40 to 70 meshes; 2 to 4% of soil like graphite; 5 to 10% of clay; 5 to 10% of bentonite; and 5 to 10% of ferro-silicon nitride. The anhydrous stemming also comprises a bonding agent accounting for 10 to 15% of the total weight of abovementioned raw materials. The anhydrous stemming has an excellent performance on resisting iron slag scouring and corrosion.
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Description

technical field

[0001] The invention belongs to the field of refractory materials, and in particular relates to a water-free foam mud for a blast furnace taphole. Background technique

[0002] Crack mud is a refractory material used to seal the taphole of ironmaking blast furnaces. At present, it can be divided into two categories: water tap mud and anhydrous tap mud. Blast furnace, the latter is on a large and medium-sized blast furnace with a high top pressure and a high degree of intensified smelting. The iron-making blast furnace taphole is the throat of molten iron discharged from the blast furnace. With the continuous strengthening of blast furnace smelting, the large-scale and long life of modern blast furnaces, the increase of tapping time and the increase of slag and iron flow have a great impact on the stability and stability of the blast furnace taphole. Maintenance puts higher demands on it. The key to maintaining high production of the blast furnace is the sta...

Claims

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