水煤浆分散剂与煤之间的相互作用Ⅷ木质素磺酸钠对煤的成浆性与水煤浆流变特性的影响  

Studies on Interactions Between CWS Dispersants and Coals Ⅷ Effect of Sodium Lignosulphonate on the Slurryability of Coal and CWS Rheological Behavior

作　　者：邹立壮[1] 朱书全[1] 王晓玲[1] 崔广文[1] 

机构地区：[1]中国矿业大学化学与环境工程学院,北京100083

出　　处：《应用化学》2005年第5期479-483,共5页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助课题(50074033)

摘　　要：研究了木质素磺酸钠原品(MJ(0))和3种分级物(MJ(1)、MJ(2)、MJ(3))对阳泉、潞安、鹤壁、淮南、唐山、北宿煤的成浆性及水煤浆流变性的影响。与MJ(0)相比,MJ(1)对5种煤的成浆浓度(粘度1000mPa·S)可提高0.8%～2.0%,其中使北宿、淮南煤的成浆浓度分别提高2.0%和1.3%;在鹤壁、淮南煤上增加了MJ(1)的单层饱和吸附量,且使复合煤粒产生较高的Zeta电位。MJ(3)对煤的分散能力以及在煤上的单层吸附量和相应的Zeta电位都比原品低。The effects of sodium lignosulphonate(MJ(0)) and its three fractions (MJ(1),MJ(2),MJ(3)) on the slurryabilities of Yangquan, Hebi, Huainan, Tangshan and Beisu coals as well as the rheological (behavior) of the coal water slurries(CWS) were studied. In comparison with MJ(0), MJ(1) can increase the CWS concentrations of above mentioned five coals by 0.8%~2.0% at a viscosity of 1 000 mPa·s, in particular by 2.0% and 1.3% for Beisu and Huainan coals, respectively. The saturated adsorption amounts of (MJ(1)) on Hebi and Huainan coals in the first step were increased, and the Zeta potential of the corresponding coal particles was increased as well. The dispersion ability of (MJ(3)) to coal particles, its adsorption amount on coal surface, and the Zeta potential of the corresponding system are lower than that for MJ(0). The lower the molecular weight and stronger the hydrophicility of the fraction, the poorer the dispersion ability.

关 键 词：水煤浆 流变特性 成浆性 木质素磺酸钠 吸附特性 

分 类 号：O645[理学—物理化学] TQ53[理学—化学]