为了在低温下精炼提纯冶金硅,在1200℃下采用Na_3AlF_-20atAl_2O_3渣剂进行了Al-Si合金造渣精炼去除冶金硅中硼杂质的研究。结果表明,造渣精炼工艺能明显提高Al-Si合金的除硼效果。在相同的熔炼时间下,A1-Si合金造渣精炼后初晶硅中杂质硼的含量降低至2.85×10~(-6),相比单一的没有渣精炼处理的除硼效果提高了15.7%;同时发现,随着造渣精炼时间的延长,初晶硅中杂质硼的去除效果逐渐增加。 In order to refine and purify the metallurgical silicon at low temperature, boron-containing impurities in the metallurgical silicon were removed by slag-refining of Al-Si alloy at 1200 ℃ with Na_3AlF_20atAl_2O_3 slag agent. The results show that the slag refining process can significantly improve the boron removal effect of Al-Si alloy. Under the same melting time, the content of boron in the primary silicon reduced to 2.85 × 10 -6 after Al-Si alloy slagging refining, the boron removal efficiency increased by 15.7% compared with the single slag-free refining treatment, At the same time, it is found that with the extension of slagging refining time, the removal efficiency of boron in primary silicon gradually increases.