Anhydrous stemming and preparation method of anhydrous stemming

Abstract

The invention discloses anhydrous stemming and a preparation method of the anhydrous stemming. The anhydrous stemming is prepared from the following raw materials in parts by weight: 20 to 50 parts of a high-aluminum-content material, 10 to 30 parts of silicon carbide, 5 to 20 parts of coke, 8 to 25 parts of ferro-silicon nitride, 5 to 12 parts of ball clay, 3 to 10 parts of pottery clay, 3 to 10 parts of sericite, 3 to 8 parts of cyanite, 2 to 5 parts of carbon-containing resin powder, 8 to 12 parts of carbon black oil, 1 to 3 parts of ethylene glycol, 3 to 5 parts of anthracene oil, 0.3 to 1.0 part of an interface agent and 0.2 to 0.5 part of a plasticizer; the preparation method comprises the following steps: pre-mixing the carbon black oil, the ethylene glycol and the anthracene oil according to a weight ratio to form mixed oil for later use; weighing the raw materials, adding the raw materials into a mixing mill for dry mixing for 3min; adding the mixed oil and mixing and grinding for 15min to 20min; adding the plasticizer and stirring for 3min to 5min; forming a product after the detection is qualified. The anhydrous stemming is safe to human bodies and environment, has high performance and low consumption and has good molten slag corrosion resistance and scouring resistance.

Description

technical field [0001] The invention relates to the field of metallurgical refractory materials, in particular to an environment-friendly anhydrous taphole clay and a preparation method thereof. Background technique [0002] Anhydrous taphole mud is a refractory material used to block the iron hole of modern ironmaking blast furnaces, and its performance is directly related to whether the blast furnace can operate safely. With the large-scale blast furnace, high wind pressure, and the discharge of a large amount of slag and iron, the quality requirements for the blasting mud for blocking the iron hole are getting higher and higher. Generally speaking, when the blast furnace does not produce molten iron slag, the anhydrous taphole mud is filled in the tap hole to maintain a sufficient depth; The hole is discharged out of the furnace, which requires the gun mud to maintain a stable hole diameter, uniform iron tapping, and finally the molten iron slag in the furnace is cleaned...

AI Technical Summary

Problems solved by technology

At present, anhydrous taphole clay combined with tar and asphalt is widely used in blast furnace taphole taphole clay. During production and use, the pollution is relatively large, the performance is relatively low, and the stability is poor. It cannot meet the needs of the new environmental protection situation and the development of blast furnaces.

The anhydrous taphole clay with resin as the binder still uses asphalt as the binder, which is not truly environmentally friendly. At the same time, the resin-bonded taphole clay has poor adaptability to the site, and it is prone to failure and hard blasting, which cannot guarantee the blast furnace. Straightforward high yield, low market acceptance

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