A kind of waterless gunpowder and preparation method thereof

A technology of anhydrous taphole mud and corundum, which is applied in the field of metallurgy, can solve problems such as poor corrosion resistance and unstable quality of anhydrous taphole mud, and achieve improved anti-oxidation performance, good volume stability, and improved hole opening performance. Effect
CN104446567BActive Publication Date: 2016-01-06CHONGQING IRON & STEEL (GRP) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING IRON & STEEL (GRP) CO LTD
Publication Date
2016-01-06
Patent Text Reader

Abstract

The invention provides an anhydrous taphole clay, which uses high-alumina aggregate, corundum, silicon carbide, boron nitride, pitch and coke as main raw materials, through the synergistic combination of additives soft clay and tar, through batching, mud grinding and It is prepared after forming; the parts by weight of the main raw materials and additives are: high alumina aggregate 20~24, corundum 23~24, silicon carbide 20~25, boron nitride 3~5, pitch 6~8, coke 8 ~10 parts, soft clay 5~8, tar 14~15; The present invention also provides a kind of preparation method of anhydrous gunpowder, at first raw material is stirred evenly to obtain mixed raw material; Milled at 55°C for 40~50? min; then transfer the milled mud to the molding machine, extrude the mud from the squeeze port at 55~65°C, divide the block according to 5~7kg per piece, and carry out no less than 10 times of throwing mud process, make. The anhydrous taphole clay prepared by the invention has high strength, good volume stability, strong slag resistance and erosion resistance, and good opening performance.
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Description

technical field

[0001] The invention belongs to the technical field of metallurgy, and in particular relates to an anhydrous taphole clay and a preparation method thereof. Background technique

[0002] With the continuous strengthening of blast furnace smelting, the requirements for the work of the blast furnace taphole are getting higher and higher. In order to stabilize the working state of the taphole and meet the needs of blast furnace intensified smelting, it is necessary to use a mud gun to press the blast furnace mud into the iron tunnel to seal it. Taphole, protect the furnace wall and furnace bottom in the taphole area. This requires that the gun mud has good working performance and can fully fill the iron hole; good volume stability and fast sintering; it has fast drying hardening and high high temperature strength; good opening performance and easy opening; and has resistance to slag and iron erosion. , scouring, good anti-oxidation properties.

[0003] There ar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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