CONSIDERATIONS ON THE KINETICS OF FROTH FLOTATION OF ULTRAFINE COAL CONTAINED IN TAILINGS

被引：37
|
作者：
Chaves, A. P. [1 ]
Ruiz, A. S. [1 ]
机构：
[1] Univ Sao Paulo, Dept Min & Petr Engn, Escola Politecn, BR-05508 Sao Paulo, Brazil
来源：
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION | 2009年 / 29卷 / 06期
关键词：
Coal; Froth flotation; Kinetics; Tailings;
D O I：
10.1080/19392690903558371
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This article presents a kinetic evaluation of froth flotation of ultrafine coal contained in the tailings from a Colombian coal preparation plant. The plant utilizes a dense-medium cyclones and spirals circuit. The tailings contained material that was 63% finer than 14 mu m. Flotation tests were performed with and without coal "promoters" (diesel oil or kerosene) to evaluate the kinetics of flotation of coal. It was found that flotation rates were higher when no promoter was added. Different kinetic models were evaluated for the flotation of the coal from the tailings, and it was found that the best fitted model was the classical first-order model.
引用
收藏
页码：289 / 297
页数：9
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