金属离子在煤界面吸附对煤成浆性的影响

EFFECT OF METAL CATIONS ONSLURRIABLITY OF COAL

本文研究了六种金属离子在三种煤表面的吸附规律，研究结果表明：铜离子能够改善煤的制浆效果，即铜离子加入煤浆中，分散剂的用量降低５０％，煤浆浓度提高；钙、镁、钻、锌离子对煤的成浆性不利的原因是它们不能有效地被吸附到煤表面，游离的金属离子和分散剂发生反应，使得吸附到煤表面的分散剂相对减少，煤的成浆性变差。

In this paper, the adsorption of six metal cations on the coal surface was stud-ied systematically. It was revealed that the slurriablity of coal is improved by adding Cu￣(2+) tocoal water slurry (CWS), the economical efficiency of dispersant is more than 50W/%, anddecreased by the presence of Ca￣(2+) , Mg￣(2+), Zn(2+), Co￣(2+) cations. This is caused by, probably,the different co- ordination properties of the cations in coal water slurry preparations.