中南大学学报（自然科学版）2011，Vol.42Issue(12)：3605-3611,7.
油酸钠浮选体系中褐铁矿与方解石的分离及机理
Flotation separation of limonite and calcite by using NaOl as collector and action mechanisms
摘要
Abstract
Floatability of limonite and calcite, and effect of Ca2+ on floatability of limonite and calcite were studied in NaOl flotation system. Selecting sodium pyrophosphate as the regulator, adjusting pH to 9.5, reverse flotation separation of artificial mixed minerals was studied when the sodium oleate and Rosa spp tannin extract dosage were 146.1 mg/L and 45.7 mg/L respectively. The results show that the sodium oleate is a good collector for limonite and calcite, and Ca2+ has strong depress effects on limonite flotation, but has no influence on calcite. Rosa spp tannin extract is potent depressor on calcite and sodium pyrophosphate is potent depressor on limonite. The recovery of limonite reaches above 91%, and the content of Tfe reaches 49.5%, but that of mixed original ore is 28.5%. Ca2+ consumes part of oleate and calcium oleate drops, which causes Ca2+ to have strong depress effects on limonite flotation. Partial dissolution of calcite in the flotation system can be discharged on the depress effect of pyrophosphate.关键词
褐铁矿/方解石/调整剂/浮选分离Key words
limonite/ calcite/ regulator/ flotation separation分类
矿业与冶金引用本文复制引用
谢兴中,王毓华,姜燕清,黄鹏,张英..油酸钠浮选体系中褐铁矿与方解石的分离及机理[J].中南大学学报（自然科学版）,2011,42(12):3605-3611,7.基金项目
国家重点基础研究发展规划("973"计划)项日(2005CB623701) （"973"计划）
