低变质粉煤的玉米秸秆型煤粘结剂的研究  

Research on corn stalk briquette binder of low metamorphic pulverized coals

作　　者：陈娟[1] 刘皓[1] 李健[1] 张智芳[1] 白小慧[1] 

机构地区：[1]榆林学院化学与化工学院,陕西省榆林市719000

出　　处：《中国煤炭》2017年第4期105-108,共4页China Coal

基　　金：榆林学院高层次人才科研启动资金资助项目(12GK46);榆林学院发展专项(HGY2014-14);榆林市工业攻关项目(Gy13-02);陕西省教育厅协同创新;服务地方计划(15JF035);2012年陕西省科技厅自然科学基础研究计划(2012JZ2003)

摘　　要：利用玉米秸秆作为有机粘结剂,将低变质粉煤冷压成型煤,探讨经过不同NaOH浓度、加热时间和加热温度改性的玉米秸秆粘结剂对型煤抗压强度和跌落强度的影响机制。研究结果表明,当NaOH溶液的浓度为1.5%时,在80℃下加热处理玉米秸秆2 h,生成的起到空间支撑作用的固体纤维网络结构空隙较大,纤维彼此交联缠绕,网囿粘结大量的粉煤,形成牢固的型煤实体,该条件下所得型煤性能最佳,其跌落强度和抗压强度分别为35.66%和2933.7 N/个。Using corn stalk organic binder, the pulverized coal was formed briquette with cold-pressing process. The influ- ence of NaOH solution, heating time and temperature on briquette compressive strength and fall strength was studied. The result shows when corn stalk was heated 2 h at 80℃ by 1.5% NaOH solution concentration, the briquette has higher strength which fall strength is 35. 66% and compressive strength is 2933.7 N/a. As solid fiber network for space supporting role has big void and fiber was entangled with each other, a lot of pulverized coal was net fixed and bonded to form firmly briquette entity.

关 键 词：粉煤 玉米秸秆 粘结剂 型煤 

分 类 号：TQ534[化学工程—煤化学工程]