Double reverse flotation process of collophanite and regulating froth action

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• 作者：Ying-yong GE ; Shun-peng GAN ; Xiao-bo ZENG ; Yong-fu YU
• 关键词：collophanite ore ; reverse flotation ; defrothing
• 刊名：Transactions of Nonferrous Metals Society of China
• 出版年：2008
• 出版时间：April 2008
• 年：2008
• 卷：18
• 期：2
• 页码：449-453
• 全文大小：279 K

文摘

A new double reverse flotation process was used to beneficiate the Yichang region collophanite of Hubei Province, China. Its final concentrate yield is 67.37 % , P₂O₅ grade is 32.17 % , P₂O₅ recovery is 87.80 % , and the main impurities MgO, Fe₂O₃ and Al₂O₃ are 0.95 % , 1.04 % , 1.36 % , respectively. The difficult problem was successfully solved that plentiful froths are bought by the cationic collector reverse flotation in collophanite beneficiation by adding inorganic froth regulator CA to the pulp. The defrothing mechanism was studied through mensurating surface tension and Zeta potential of the pulp after adding CA. It is found that the changing of surface tension and hoisting of Zeta potential may be the main reasons that froths become friable and break up.