复配分散剂与不同煤化程度煤成浆性能的研究

Study on the slurryability of coal water slurry with compounded dispersant and different rank coals

为了考察复配分散剂对不同煤化程度煤的成浆性能的影响,以木质素磺酸钠与萘磺酸钠复配分散剂对山西王坡煤(WP)、淮北朱仙庄煤(ZXZ)、内蒙古上湾煤(SW)3种不同煤化程度的煤样进行了制浆试验。结果表明:复配分散剂对上湾煤样所成浆的流动性和稳定性产生较大影响,但成浆浓度不高;对较高煤化程度煤样的成浆性提高效果明显,选用3号分散剂王坡煤的成浆浓度达到最大66.8%;朱仙庄煤选用4号分散剂可以制成流动性和稳定性较好的煤浆,其煤浆浓度达67.0%。木质素磺酸钠及萘磺酸复配分散剂的协同作用对不同煤化程度煤样成浆性的影响与煤的结构有关,此复配分散剂对煤化程度较高煤的成浆性提高较有利。

Coal water slurry （CWS） were prepared using three kinds of coal in different rank（WP, ZXZ, and SW） in different compounded dispersants of Sodium-Lignosulphonate （SLS） and Sodium-Naphthalenesulphonate （ SNS ） in order to investigate the slurryability of CWS with compounded dispersants and different rank coals. The results showed that： compounded dispersants have a greater impact on the liquidity and stability of CWS of SW, but coal concentration is not high; obviously increase the slurryability of higher rank coals （ZXZ and WP）. The coal maximum concentration of WP was 66.8% using 3# dispersant. The good liquidity and stability of CWS of ZXZ can be prepared with 4# dispersant, the coal maximum concentration is 67.0%. The synergies of compounded dispersants of SLS and SNS to the slurryability of different rank coals were related to the structure of coal, this compounded dispersants were more advantageous to increase coal concentration of CWS.