摘要
分别对原矿、马弗炉焙烧矿和微波焙烧矿的溶出赤泥进行了微观形貌的分析,并考察了在絮凝剂作用下,不同预处理方式和条件对溶出矿浆性能的影响。结果表明:焙烧预处理使溶出赤泥的表面形貌疏松多孔,并使针铁矿转化为赤铁矿。焙烧预处理使溶出矿浆的沉降速度略有降低,但同时也极大地降低了赤泥的压缩液固比。高温焙烧使溶出赤泥的沉降性能恶化。相对于马弗炉焙烧,微波焙烧矿溶出矿浆的沉降性能更优良。
The microstructures of head ore, muffle roasted ore and microwave roasting ore were analyzed, and the effects of pretreatments on settling performance of digesting slurry were studied. The results show that roasting pretreatment make the apparent of red mud loose and porous, and transformed goethite into hematite. The settling rate of digesting slurry reduced little, but the liquid solid compression ratio of digestion slurry reduced, high temperature roasting worsened the settling performance of digesting slurry. Comparing to the digestion slurry of muffle roasted ore, the digestion slurry of microwave roasted ore has better settling performance.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2009年第5期17-20,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金资助项目[50174018]
教育部高校博士点基金项目[20050145029]
辽宁省优秀青年科技人才基金项目[2005221012]
关键词
微波预处理
赤泥
絮凝剂
针铁矿
Microwave pretreatment
Red mud
Flocculant
Goethite
