选煤尾矿制备水煤浆的研究

Study on preparation of coal water mixture from rejects

介绍了利用选煤尾矿(滤饼)制成具有一定的流变结构特性和热物理特性的水煤浆燃料的可能性,并研制出复合增塑添加剂成分,可以大大降低选煤尾矿制成的水煤浆的粘度;确定了水煤浆的主要结构-流变性和燃料的热物理特性,最后进行了尾矿制备水煤浆的工业性试验,结果表明,该种燃料可用于工业供热系统。得出的结果用于实施建立电能1.2MW的自动化动力能源综合体计划框架的选煤尾矿制水煤浆及其燃烧综合装置工艺流程的计算。

Discuss the possibility of utilizing the rejects-fine tailings（filter cakes） from coal preparation plants for the preparation of coal water slurry（CWS）,which has certain rheological and thermophysical property.The commercial test results of coal water slurry production from coal slime are represented.The compound plasticization additives are developed,which can greatly reduce the viscosity of coal water slurry prepared from coal slime.The values of main structural-flow characteristics and thermophysical property of the CWS are determined.The commercial tests of CWS preparation from coal slime and its combustion process show that this kind of fuel can be used in the industrial heating system.The test results can be used to set up combined heat and power cogeneration units whose power is 1.2 MW,and the calculation of CWS combustion.