一种复合型粘结剂对褐煤成型性能的研究  

Effect of Composite Binder on Properties of Lignite Molding

作　　者：王祥曦 唐晓宁[1] 张彬[2] 杨和山[1] 郭一婧 

机构地区：[1]昆明理工大学化学工程学院,昆明650500 [2]昆明理工大学理学院,昆明650500

出　　处：《硅酸盐通报》2016年第7期2105-2113,共9页Bulletin of the Chinese Ceramic Society

基　　金：大学生创新创业训练项目基金(201410674221);昆明理工大学分析测试基金(20140962);昆明理工大学"提高经济困难学生综合能力"项目基金(KKZ1201505046)

摘　　要：以淀粉、膨润土、聚乙烯醇(PVA)为原料制备成复合粘结剂,采用冷压型煤制备技术制成标准型煤。以其冷压强度和跌落强度为技术指标,通过单因素实验得到粘结剂各组分的最佳添加量。结果表明当淀粉添加量为11.50%,膨润土/淀粉为0.25,PVA/(膨润土+淀粉)为0.09时,型煤的跌落强度为95.212%,冷压强度为3.760 k N·个^(-1),用响应曲面设计安排实验并对粘结剂组分进行优化,在优化条件下试验检测型煤的跌落强度为95.268%,冷压强度为3.727 k N·个^(-1),与理论值无显著差异,表明模拟值可以反映参数间的真实关系。再通过检测型煤的表面官能团、表面形貌进行分析得出粘结剂对褐煤成型的影响。The briquette was prepared according to the cold-forming technology by using starch, bentonite and PVA as the mixture binders. Their cold strength and fell strength was investigated as a function of the concentration of the three binders afterwards by using single factor experiment. It was found that when the starch concentration, bentonite/starch and PVA/（ bentonite ＋ starch） was 11.50%, 0. 25 and 0.09 respectively, the drop strength and the cold strength reached to the peak value which was 95. 212% and 3. 760 kN. The experimental result was validated by response surface methodology design simulation and the optimum concentration of the binder was optimized. Under the optimum conditions, the experimental testing results are 95. 268% and 3. 727 kN for the drop strength and the cold strength respectively, which was closing to the detected values. It is indicated that the resulting model can reflect the true relationship between these parameters. This model is expected to be used to analysis and forecast the drop strength and cold strength of coal.

关 键 词：粘结剂 膨润土 褐煤成型 响应曲面法 

分 类 号：TQ536[化学工程—煤化学工程]