文献类型：期刊文章

作　　者：伍继君[1,2,3] 马文会[1,2,3] 李彦龙[1,3] 杨斌[1,2] 刘大春[1,2] 戴永年[1,2,3]

机构地区：[1]昆明理工大学真空冶金国家工程实验室,昆明650093 [2]昆明理工大学云南省有色金属真空冶金重点实验室,昆明650093 [3]昆明理工大学云南省高校硅冶金与硅材料工程研究中心,昆明650093

出　　处：《Transactions of Nonferrous Metals Society of China》

基　　金：Projects(51104080,u1137601) supported by the National Natural Science Foundation of China;Project(2009CD027) supported by the Natural Science Foundation of Yunnan Province,China;Project(14118557) supported by the Personnel Training Foundation of Kunming University of Science and Technology,China

年　　份：2013

卷　　号：23

期　　号：1

起止页码：260-265

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2013_2014、EBSCO、EI、IC、INSPEC、JST、SCI(收录号：WOS:000314879100034)、SCI-EXPANDED(收录号：WOS:000314879100034)、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：Gas blowing is a valid method to remove the impurities from metallurgical grade silicon（MG-Si） melt.The thermodynamic behavior of impurities Fe,Al,Ca,Ti,Cu,C,B and P in MG-Si was studied in the process of O2 blowing.The removal efficiencies of impurities in MG-Si were investigated using O2 blowing in ladle.It is found that the removal efficiencies are higher than 90% for Ca and Al and nearly 50% for B and Ti.The morphology of inclusions was analyzed and the phases Al3Ni,NiSi2 and Al3Ni were confirmed in MG-Si by X-ray diffraction.It was found that SiB4 exists in Si？B binary system.The chemical composition of inclusions in MG-Si before and after refining was analyzed by SEM-EDS.It is found that the amount of white inclusion reduces for the removal of most Al and Ca in the forms of molten slag inclusion and the contents of Fe,Ni and Mn in inclusion increase for their inertia in silicon melt with O2 blowing.

关 键 词：metallurgical grade silicon  THERMODYNAMICS O2 blowing  IMPURITIES INCLUSION removal efficiency  

分 类 号：TQ127.2]