热分散处理条件对胶黏物分散与后续去除的影响 第1部分 大胶黏物、细小胶黏物和微细胶黏物的分散与去除  

Heat Dispersion of Sticky Contaminants and Their Removal by Post-flotation Part.1 Macro-stickies,Mini-stickies and Micro-stickies

作　　者：于海龙[1] 高扬[1,2] 张凤山[2] 秦梦华[1] 

机构地区：[1]山东轻工业学院制浆造纸科学与技术省部共建教育部重点实验室,山东济南250353 [2]华泰集团有限公司,山东广饶257335

出　　处：《中国造纸》2011年第8期1-6,共6页China Pulp & Paper

基　　金：山东省"泰山学者"建设工程专项经费资助项目(TS200637022);国家自然科学基金(30972327);"教育部新世纪优秀人才"支持计划资助项目(NCET-08-0882)

摘　　要：研究了热分散处理温度、齿盘间隙以及进浆浓度对浆中胶黏物的分散作用,同时检测了后浮选过程中胶黏物的去除效果。研究结果表明,热分散处理使大胶黏物和细小胶黏物得到了有效的分散,微细胶黏物以及胶体与溶解物质含量有所增加。提高处理温度、减小齿盘间隙或增加进浆浓度,都将促进大胶黏物和细小胶黏物的分散。在温度为100℃、齿盘间隙为0.3 mm、进浆浓度为30%的条件下,大胶黏物可降低大约92%,细小胶黏物可降低大约81%。由于大胶黏物被分散成为尺寸更为细小的成分,促进了胶黏物在后续浮选过程的有效去除,细小胶黏物的去除率达到25%～26%,微细胶黏物的去除率达到68%～70%。In this paper,effect of heat-dispersing by varying temperature,disc clearance,and pulp consistency on sticky substances was studied.Sticky substances including macro-,mini-,and micro-stickies were quantitatively investigated.Furthermore,their removal in the subsequent post-floatation was evaluated.The results showed that the dispersion efficiency of sticky substances can be improved significantly by raising temperature,reducing disc clearance,and increasing pulp consistency.Under temperature of 100℃,disc clearance of 0.3 mm,and pulp consistency of 30%,macro-and mini-stickies decreased by 92% and 83%,respectively.Due to being dispersed to a smaller size,removal of mini-and micro-stickies were improved in post-floatation to 25%~26% and 68%~70%,respectively.

关 键 词：热分散 胶黏物控制 大胶黏物 细小胶黏物 微细胶黏物 

分 类 号：TS749.7[轻工技术与工程—制浆造纸工程]