木质素磺酸盐化学改性及制浆性能研究

Research on Chemical Converted Lignin Sul fonates and Their Slurrying Performance

论述了木质素磺酸盐化学改性制取水煤浆添加剂的试验研究。探讨了反应时间、反应温度、反应液浓度等因素对水煤浆流变性能的影响。红外光谱分析表明 ,改性后的木质素磺酸钠分子结构有较大改变 ,表面活性明显提高。该添加剂用于大同煤制浆 ,可使煤浆定粘浓度提高2 %。

Experiment research on synthesis of additive by chemical conversion of lignin sulfonate introduced.Influence on rheology of coal slurry by additive thereof prepared at different reaction time,temperature and solution concentration discussed.UR spectrometry shown that molecular structure of converted ligninsulfonates changed in great extent and their surface activity obviously improved.Application of these additives in slurry preparation with Datong coal,solid content at fixed viscosity be increased 2%.