低锌高炉灰选锌与铁炭分离可行性研究  

Feasibility Study on Iron-carbon Separation and Zinc Selection from Low Zinc Blast Furnace Ash

作　　者：王伟 付贵泰 刘金明 孙伟 李佳伟 孙吉鹏 WANG Wei;FU Guitai;LIU Jinming;SUN Wei;LI Jiawei;SUN Jipeng(Weihai Haiwang Technology Co.,Ltd.;Weihai Haiwang Hydrocyclone Co.,Ltd.)

机构地区：[1]威海市海王科技有限公司,山东省威海市264200 [2]威海市海王旋流器有限公司

出　　处：《现代矿业》2024年第2期173-175,共3页Modern Mining

摘　　要：为提高唐山某低锌高炉灰的综合利用率,达到入窑锌粉锌品位6%左右的要求,进行了旋流器分级分选+螺旋分选机分选试验。试验结果表明:①锌品位1.75%的高炉灰经1粗1精两段旋流器分级分选,最终可获得锌品位分别为5.96%、6.27%,锌回收率分别为47.10%和44.21%的锌粉。②对产率15%左右的二段旋流器底流采用螺旋分选机分离铁、炭,螺旋分选机内圈产品铁品位分别为47.76%、48.98%,可作为低品位铁产品,或并入底流1一并开展后续选铁试验;螺旋分选机中圈和外圈产品铁品位在34%左右,热量值在2500 cal/kg左右,铁品位和热量均不高,且粒度较细,处理难度大,没有再处理或作为单独产品的意义。研究确定了较理想的锌回收工艺,可作为开发利用依据。In order to improve the comprehensive utilization rate of a low zinc blast furnace ash in Tangshan and achieve the requirements of zinc powder into the kiln zinc grade of about 6%,the cyclone classification separation+spiral separator separation test was carried out.The results show that:①The blast furnace ash with zinc grade of 1.75%was separated by one roughing one cleaning two-stage cyclone separa-tion.Finally,zinc powder with zinc grade of 5.96%and 6.27%,zinc recovery of 47.10%and 44.21%were obtained.②For the underflow of the two-stage cyclone with yield of about 15%,the spiral separator is used to separate iron and carbon.The iron grades of the inner ring products of the spiral separator are 47.76%and 48.98%,respectively,which can be used as low-grade iron products or incorporated into the underflow 1 to carry out subsequent iron separation tests.The iron grade of the middle ring and outer ring products of the spiral separator is about 34%,and the heat value is about 2500 cal/kg.The iron grade and heat are not high,and the particle size is fine and the treatment is difficult.There is no significance of reprocessing or as a separate product.The study determined the ideal zinc recovery process,which can be used as the basis for development and utilization.

关 键 词：高炉灰 低含锌量 综合处理再利用 水力旋流器 螺旋分选机 

分 类 号：TD952[矿业工程—选矿] X757[环境科学与工程—环境工程]