羧甲基纤维素和离子强度对钾盐矿浮选体系中矿物悬浮液稳定性的影响

Effect of carboxymethyl cellulose and ionic strength on stability of mineral suspensions in potash ore flotation systems.

作者信息

Pawlik M, Laskowski J S, Ansari A

机构信息

Department of Mining and Mineral Process Engineering, The University of British Columbia, 517D-6350 Stores Road, Vancouver, Canada British Columbia V6T 1Z4, Canada.

出版信息

J Colloid Interface Sci. 2003 Apr 15;260(2):251-8. doi: 10.1016/s0021-9797(02)00225-4.

DOI:10.1016/s0021-9797(02)00225-4

PMID:12686172

Abstract

The adsorption of sodium carboxymethyl cellulose from aqueous solutions varying in ionic strength from that of distilled water to 50% NaCl/KCl brine (about 3.5 mol/dm(3)) onto illite and dolomite has been studied. The purpose of this work was to investigate the solvency effects in the phenomena underlying the potash flotation process that is carried out in saturated brine. Based on viscosity measurements, the adsorption results were analyzed in terms of a simple model of polymer macromolecules in solution. Suspension stability measurements carried out concomitantly with adsorption tests showed the ranges of carboxymethyl cellulose concentration over which the tested suspensions either were aggregated or were restabilized.

摘要

研究了羧甲基纤维素钠在离子强度从蒸馏水到50% NaCl/KCl盐水（约3.5 mol/dm³）的水溶液中，在伊利石和白云石上的吸附情况。这项工作的目的是研究在饱和盐水中进行的钾盐浮选过程所涉及现象中的溶剂化效应。基于粘度测量结果，根据溶液中聚合物大分子的简单模型对吸附结果进行了分析。与吸附试验同时进行的悬浮稳定性测量表明了羧甲基纤维素浓度的范围，在该范围内，测试的悬浮液要么发生聚集，要么重新稳定。