Processing a spodumene ore to obtain lithium concentrates for addition to glass and ceramic bodies

被引：48

作者：

Amarante, MM ^{[1
]}

de Sousa, AB ^{[1
]}

Leite, MM ^{[1
]}

机构：

[1] Inst Geol & Mineiro Lab, P-4465 S Mamede De Infesta, Portugal

来源：

MINERALS ENGINEERING | 1999年 / 12卷 / 04期

关键词：

industrial minerals; dense medium separation; froth flotation;

D O I：

10.1016/S0892-6875(99)00023-0

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This work describes a study conducted on the processing of a spodumene ore occurring as aplite-pegmatitic lodes in granites located in Northern Portugal, in order to obtain lithium concentrates for addition to glass and ceramic bodies. Besides spodumene, the ore contained mainly K-feldspar, quartz and mica, mainly muscovite. Its beneficiation was carried out by flotation and heavy media separation (HMS). The flotation testwork was carried out with 300/75 mu m deslimed feeds assaying from 1.9 to 3%Li2O. Rougher concentrates assaying 6.1%Li2O and recleaner concentrates assaying 7.75%Li2O were obtained at stage recoveries of respectively 67% and 31%. The HMS tests were done with bromoform, on classified feed samples containing (2.3-2.7) %Li2O. Sink products assaying c.a. 5%Li2O, which comply with the specifications for the glass grade spodumene, were obtained. The lithium distributions in these products, varied from 39 to 61%. From the treatment of this ore, by flotation and HMS, it was possible to obtain concentrates with Lithia grades capable of being used by the glass and ceramics industries. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：433 / 436

页数：4