CAJ | 학술논문

研究超重力场下铝硅过共晶熔体凝固精炼提纯冶金硅.实验结果表明:超重力作为一种强化分离手段,可以实现铝硅合金中初晶硅颗粒的富集分离.在超重力作用下,铝硅合金中精炼硅颗粒沿超重力方向富集在铝硅合金下部.用王水溶解其中的铝,得到初晶硅颗粒.通过分析初晶硅中杂质含量可知,与冶金硅原样相比,精炼后的硅纯度由99.59％提高到99.92％,硼和磷的质量分数分别由8.33×10-6和33.65×10--6降低到5.25×10-6和13.50×10-6,表明该提纯方法可行.
연구초중력장하려규과공정용체응고정련제순야금규.실험결과표명:초중력작위일충강화분리수단,가이실현려규합금중초정규과립적부집분리.재초중력작용하,려규합금중정련규과립연초중력방향부집재려규합금하부.용왕수용해기중적려,득도초정규과립.통과분석초정규중잡질함량가지,여야금규원양상비,정련후적규순도유99.59％제고도99.92％,붕화린적질량분수분별유8.33×10-6화33.65×10--6강저도5.25×10-6화13.50×10-6,표명해제순방법가행.
The investigation on purification of metallurgical grade silicon by solidification of hypereutectic Al-Si melt with super gravity as an intensified separation way was carried out.The results indicate that the refined silicon grains are successfully enriched at the bottom of the Al-Si alloy along the direction of super gravity.Then the refined silicon was collected by aqua regia leaching.The purity of the collected silicon is analyzed as 99.92％,which is obviously improved compared with the purity of the metallurgical grade silicon of 99.59％,proving the feasibility of this purification method.Furthermore,the mass fraction of B is reduced from 8.33 × 10-6 to 5.25 × 10-6 and that of P from 33.65× 10-6 to1 3.50× 10-6.