Removal of Impurities in Aluminum by Use of Fluxes

摘要：

　　A new method for removal of impurities in pure molten aluminum has been presented in this paper.The basic principle of this method is that the molten fluxes are forced to inject into the molten aluminum under counter-gravity,creating strong vortex to mix fully with the molten aluminum.In this way,the impurities in the aluminum will transfer into the flux because of the absorption of the flux to the inclusions.As the result,the molten aluminum is purified.The experiments were carried out for pure aluminum combined with the flux (40wt.% NaCl,30wt.% KCl,10wt.% NaF and 20wt.%Na3AlF6).The results show that after 3 purifying cycles (6 minutes),the inclusion contents decreased from 2.1% to 0.35%,a removal rate of 83.3%; and hydrogen concentration decreased from 0.37ml/100gAl to 0.12ml/100gAl,with hydrogen removal rate being 68%.

关键词： Flux injection Purification Aluminum Impurity

作者: Chen Liu Zhiliu Hu Jianmin Zeng

作者单位: Key Lab.of Nonferrous Materials and New Processing Technology Guangxi University,Nanning 530000,Chin Key Lab.of Nonferrous Materials and New Processing Technology Guangxi University,Nanning 530000,Chin

会议类型: 国际会议

会议名称: The 6th Cross-Strait Conference on Advanced Engineering Materials (第六届海峡两岸工程材料研讨会)

会议地点: 南京

会议语种:英文

页码: 152-155

在线出版日期: 2011-11-08（万方平台首次上网日期，不代表论文的发表时间）