Additives for taphole clay to suppress spattering of iron holes

A technology of sputtering and additives in the taphole, applied in the field of metallurgical refractory materials, can solve the problems of irregular taphole ducts, leakage, cracked gas, etc., and achieves the reduction of the high temperature strength difference, the improvement of thermal shock stability, and the improvement of strength reduction. Effect
CN104276828BInactive Publication Date: 2016-01-20CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
Publication Date
2016-01-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of metallurgical refractory matters and relates to an additive for stemming for inhibiting iron notch splash. The additive comprises the following components in parts by weight: 1-3 parts of silicon metal, 0.4-0.6 part of boron carbide, 2-8 parts of asphalt, 0-5 parts of silicon nitride and 2-8 parts of kyanite. When the additive for stemming for inhibiting iron notch splash disclosed by the invention is added into the stemming, a proper amount of glass phase components can be generated at high temperature, and possible cracks generated in an iron notch channel can be plugged by the glass phase contacted with molten iron under the condition that the high-temperature performance is not influenced, so that splash caused by gas channeling is effectively prevented. Moreover, the additive has the advantages of proper micro expansion effect, medium and high temperature strength, slag iron erosion resistance and oxidation resistance.
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Description

Technical field

[0001] The invention belongs to the technical field of metallurgical refractory materials, and relates to an additive for blasting mud, and more specifically, to an additive for blasting mud for inhibiting iron spout. Background technique

[0002] Blast furnace taphole splashing is one of the frequent problems in the blast furnace ironmaking production process. The reasons for the splashing may be: gas leakage due to the cracking of the taphole combination bricks; the tapping machine impacts the taphole during the opening process Cracks in the pores cause gas leakage; cracks in the blast mud due to volume shrinkage at high temperatures cause gas leakage; turbid mud damp; cooling water leakage; poor uniformity in the working state of the hearth, coke accumulation, and gas downward; iron Irregular pores, etc.

[0003] In recent years, with the continuous improvement of the smelting intensity of blast furnaces, the taphole splash phenomenon has become an increasingly ...

Claims

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