期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Recovery of Sillimanite from Beach Sands--An Operator's Nightmare?
1
作者 Chivukula venkata Gopala Krishna Murty Leon Rademeyer +3 位作者 Natarajan JaiSankar Patruni Bhavya Manjeera Prasana-sampath challa venkata ramachandra murthy 《Journal of Earth Science and Engineering》 2013年第4期270-281,共12页
Sillimanite, chemically named aluminum silicate, 3Al2O3SiO2 is one of the three forms of alumino silicate polymorphs and commonly encountered in aluminous metamorphic, plutonic and volcanic rocks and their weathering ... Sillimanite, chemically named aluminum silicate, 3Al2O3SiO2 is one of the three forms of alumino silicate polymorphs and commonly encountered in aluminous metamorphic, plutonic and volcanic rocks and their weathering products. Traditionally in India, sillimanite is upgraded by froth floatation technique using oleic acid as a collector cum frother, sodium silicate as depressant and soda ash as pH regulator. At TSPL (Trimex Sands Pvt Ltd), conventional mechanical float cells are installed to float sillimanite. In addition to the usual problems associated with conventional cells, poor flow ability of the sillimanite concentrate is experienced in dry circuit due to the presence of sodium oleate. Fine garnet in the sillimanite concentrate contributes to high iron content in the final product, making sillimanite separation a nightmare for operators (lower recoveries coupled with inferior grades). Various efforts were made to improve the performance of the circuit such as introduction of additional frother like MIBC (methyl ISO butyl carbinol), optimizing the operating parameters such as pulp density, collector dosage, depressant dosage, air flow rate, pH etc., use of collector aids, stage wise addition of reagents etc.. The challenges faced to produce a sillimanite product with stringent quality norms and the efforts made to improve the grade and recovery are described in this paper. 展开更多
关键词 SILLIMANITE froth flotation conventional mechanical cell.
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部