超贫磁铁矿高压辊磨-粗细双抛尾选矿工艺研究  

Study on Mineral Processing of High-pressure Roller Mill-Coarse and Fine Double Throwing Tailings for Ultra-low-grade Magnetite Ores

作　　者：陈于海[1] 胡佛明 程传麟 沈远海[1] 蒋丰祥 赵文华[1] Chen Yuhai;Hu Foming;Cheng Chuanlin;Shen Yuanhai;Jiang Fengxiang;Zhao Wenhua(Nanshan Mining Co., Ltd., Maanshan Iron and Steel Group, Maanshan, Anhui,China;Guangdong Institute of Resources Comprehensive Utilization, State Key Laboratory of Rare Metal Separation and Comprehensive Utilization, Guangdong Provincial Key Laboratory of Development & Comprehensive Utilization of Mineral Resources, Guangzhou, Guangdong, China)

机构地区：[1]马钢集团南山矿业有限责任公司,安徽马鞍山243000 [2]广东省资源综合利用研究所,稀有金属分离与综合利用国家重点实验室,广东省矿产资源开发和综合利用重点实验室,广东广州510651

出　　处：《矿产综合利用》2019年第4期46-49,25,共5页Multipurpose Utilization of Mineral Resources

摘　　要：安徽某超贫磁铁矿TFe品位13.96%,磁铁矿含量9.58%,嵌布粒度细,硬度大。分选过程采用高压辊磨粉碎,得到的产品分级后分别进行粗粒抛尾和细粒抛尾,超细碎粗精矿进入常规阶段磨矿阶段选别工艺,得到的精矿进行淘洗机深度精选,获得最终精矿。闭路试验取得了铁精矿品位65.16%,回收率70.16%,且磁性铁矿物含量64.01%,回收率90.68%的指标,同时产出55.98%的砂石建材。The content of total iron is 13.96% and the content of magnetite is 9.58% in an ultra-low-grade iron mine in Anhui, characterized by fine granularity and large hardness. The separation process is carried out by crushing with high-pressure roller mill, grading the crushed products, and then coarse-grained throwing tail and fine-grained throwing tail are carried out respectively. The primary concentrate obtained after finegrained throwing tail has entered the conventional stage grinding stage selection process. The obtained concentrate is used for the depth selection of the elutriation magnetic separator and the final concentrate is gotten. In the closed-circuit test, the grade of iron concentrate is 65.16%, the recovery rate is 70.16%, the mineral content of magnetic iron is 64.01%, and the recovery rate is 90.68%, meanwhile, 55.98% sand and stone materials are produced.

关 键 词：超贫磁铁矿 高压辊磨 粗粒抛尾 细粒抛尾 磁性铁矿物 

分 类 号：TD951[矿业工程—选矿]