(中南大學(xué) 礦物工程系， 長沙 410083)
摘 要: 研究了一水硬鋁石、高嶺石及葉臘石等 單礦物在RL為捕收劑時(shí)的浮選特性 ，考察了各種調(diào)整劑、 難免離子對(duì)浮選體系的影響，在此基礎(chǔ)上進(jìn)行了人工混合礦和 實(shí)際 礦石的分離試驗(yàn)。實(shí)際礦石閉路試驗(yàn)結(jié)果表明：采用RL為捕收劑，碳酸鈉和六偏磷酸鈉為調(diào)整劑，精礦中Al2O3和SiO2的品位分別為70.74%和6.37%(精礦鋁硅比為11.11)，Al2O3的回收率達(dá)到90.52%。
關(guān)鍵字: 捕收劑； 調(diào)整劑； 難免離子； 浮選特性； 鋁土礦
（Department of Mineral Engineering, Central South University,
Changsha 410083, P.R.China）
Abstract: The flotation properties of single minerals suc h as diaspore, kaolinit e and pyrophyllite in bauxites have been investigated using RL as collector. Eff ects of regulators and unavoidable ion on flotation have also been studied. Ba sed on the results of single minerals tests, the separation experiments of arti ficial m ixed minerals and bauxite ore have been carried out. The concentrate with the gr ade of Al2O3 70.74% and SiO2 6.37%, and the recovery of Al2O3 90.52% i s obtained by means of closed circuit experiment of ore when using RL as collector, Na2CO3 and (NaPO3)6 as modifiers.
Key words: collector； modifier； unavoidable ion； flot ation properties； bauxite
