Converter repairing material and production method thereof: Fid-Bau Portal

Converter repairing material and production method thereof

ZHANG YIXIAN / LIU LINLIN / ZHAO XIANHUA / JIN ZHAO / HOU ZHONGYANG / YIN BIN

The invention relates to a converter repairing material and a production method thereof. The converter repairing material is prepared from the following raw materials in parts by weight: 73-100 parts of 200-mesh dead burnt magnesia, 20-30 parts of 1-3 mm macrocrystalline fused magnesite, 20-30 parts of 200-mesh macrocrystalline fused magnesite, 2-5 parts of metal aluminum powder, 2-5 parts of zirconium oxide powder, 2-5 parts of magnesium aluminate spinel, 2-4 parts of calcite powder, 2-4 parts of potassium feldspar powder, 3-5 parts of forsterite powder, 5-10 parts of asphalt, 5-8 parts of sodium oleate and 5-12 parts of magnesium trisilicate. The environment pollution caused by the asphalt is reduced, the characteristics of good high-temperature fluidity and good spreadability of the asphalt are retained, the sintering time is short, and the bonding strength is high. The converter repairing material can be suitable for pouring operation of molten steel with relatively low alkalinity and also can be suitable for pouring operation of molten steel with relatively high alkalinity. The converter repairing material has the advantages of good fluidity, high density, short sintering time and long service life.

一种转炉修补料及其生产方法，是由下列重量份数的原料制备而成：200目重烧镁砂73‑100份；1‑3mm大结晶电熔镁砂20～30份、200目大结晶电熔镁砂20～30份；金属铝粉2‑5份、氧化锆粉2‑5份、镁铝尖晶石2‑5份、方解石粉2‑4份、钾长石粉2‑4份、镁橄榄石粉3‑5份；沥青5‑10份、油酸钠5‑8份、三硅酸镁5‑12份。本发明减少了沥青造成的环境污染，既保留了沥青高温流动性好、铺展性好的特点，同时烧结时间短，粘结强度高。本发明的转炉修补料既能适用于碱度较低的钢水浇注作业同时也能适用于碱度较高的钢水浇注作业。本发明流动性好，致密度高，烧结时间短，使用寿命长。

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