改性生物质制备复合型煤粘结剂的研究

选用陕西彬长烟煤与当地玉米秸秆为原料，用NaOH溶液改性生物质，考察碱液的浓度、反应温度、反应时间，生物质加入量对生物质粘结效果的影响；调节一定比例MgCl2，MgO固化剂量与之复合作粘合剂，并以抗压强度、跌落强度为指标对型煤成型性能进行考察．研究结果表明：改性生物质和无机固化剂复合粘结剂效果良好,生物质改性最佳条件为碱液浓度1％，反应温度80℃，反应时间2h，生物质加入量10％，固化剂加入量为4％；复合型煤成型压力25MPa．

Study on denatured biomass prepare compound binder of briquette

This paper is studied on the basis of selecting the Shaanxi Binchang bituminous coal and local corn straw as experimental materials. NaOH was choused as the denatured solu- tion. By changing the factors including the alkali concentration, reaction temperature, reac- tion time and adding amount of biomass, we study how do these factors influence the dena- tured biomass bonding effect. A certain amount of curing agent composed by MgC12 and MgO were adding into it to improve the binder and then prepared the briquette. Besides, the mold- ing performance with the compressive strength and drop strength as indexes was investiga- ted. The results show that compositing the denatured biomass with inorganic curing agent produce a better bonding effect. The optimum condition of denatured biomass is 1% of the alkali concentration, the reaction temperature is 80 ℃, reaction time is 2 h and the amount of biomass is 10% ; the amount of curing agent is 4%; the briquette perform well under the molding pressure of 25 MPa.