微波干燥钠基复合膨润土的试验研究

EXPERIMENTAL INVESTIGAITION ON MICROSWAVE DRYING OF SODIUM-BASED COMPOSITE BENTONITE

钠基复合膨润土是生产氧化球团普遍采用的一种优良的复合粘结剂。它是由膨润土和有机粘结剂在一定条件下反应复合而成。实际生产中 ,钠基复合膨润土的干燥过程是影响产品质量而又较难控制的工艺。传统的煤火烘干 ,其温度不易控制 ,产品质量波动大。利用微波加热技术 ,可快速、准确地干燥钠基复合膨润土。试验表明 ,微波干燥钠基复合膨润土是可行的。 1kg物料 6分钟脱水 8% ,需要 1kW电功率。可以得出 ,干燥 1t物料需耗电10 0kWh。

Sodium-based composite bentonite( SBCB) is a good binder used in pelletizing process It was made of a reaction between bentonite and organism in some condition However the drying process of SBCB is difficult to contorl in production The temperature of conventional drying used with coal is not easy to control accurately and the product quality is instable Utilizing the technology of microswave heating it may dry SBCB quickly and accurately The experiment indicates that drying of SBCB with microswave heating is feasible and with one kilowatt electric power to drying one kilogram SBCB ,the water in SBCB could be evapotrated 8% in 6min So we can educe that drying one ton SBCS will need 360MJ electrical energy