论文部分内容阅读
通过理论计算与工业试验开发了180 t钢包喂实芯钙包芯线工艺。理论计算结果表明,对于直径9 mm,芯皮厚度为0.75 mm的包芯线,其理论最小喂丝速度为1.48 m/s。工业试验结果表明,喂丝速度在2~3 m/s时,喂线速度越大,金属钙的收得率越小。当喂丝速度为2 m/s时,钙的收得率达到26.9%;与使用钙铁包芯线相比,使用实芯钙包芯线,精炼工位的钙收得率提高了16.9%,吨钢成本可降低6.4元。
Through theoretical calculations and industrial tests, a 180 t ladle was developed to feed solid core calcium cored wire. The theoretical calculation results show that the theoretical minimum feeding speed is 1.48 m / s for 9 mm diameter cored wire with core thickness of 0.75 mm. The results of industrial tests show that when the feeding speed is 2 ~ 3 m / s, the feeding speed is higher and the yield of metallic calcium is smaller. When the feeding speed was 2 m / s, the yield of calcium reached 26.9%. Compared with the use of calcium-iron cored wire, the calcium recovery rate of the refining station increased by 16.9% , The cost per ton of steel can be reduced by 6.4 yuan.