共查询到17条相似文献,搜索用时 62 毫秒
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梅山铁矿尾矿烧结制砖试验研究 总被引:1,自引:0,他引:1
为了减少尾矿堆存容量,延长尾矿库使用寿命,充分利用梅山铁矿细粒尾矿,开展了利用尾矿生产烧结砖试验。根据尾矿矿物组成、粒度组成、差热失重分析制定技术方案,经过砖厂生产线配料、搅拌、挤出、成型、干燥,砖坯在轮窑、隧道窑、梭式窑、辊道窑等4种不同焙烧窑进行烧结工业试验,测定了烧成砖性能指标,证实梅山细粒尾矿可以代替黏土生产出合格建筑用砖。 相似文献
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梅山铁矿尾矿选矿工艺研究 总被引:1,自引:0,他引:1
为了提高资源利用率,开展了梅山铁矿尾矿选矿工艺研究.针对品位低、粒度细、难选别的特性,共进行了6个工艺流程的试验.结果表明采用筛分-强磁-磁化焙烧-弱磁粗选-磨矿-弱磁工艺,精矿指标最优:铁品位58.02%、产率12.55%、回收率39.32%.结合梅山选矿实践,优化出强磁精矿作水泥添加剂、强磁精矿配矿销售、磁化焙烧、强磁重选等4个供选择的实施方案,初步经济评估表明磁化焙烧工艺可得到合格铁精矿9万t,经济效益最大. 相似文献
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某铜矿铜硫尾矿回收白钨选矿试验 总被引:1,自引:0,他引:1
介绍了某铜矿铜硫浮选尾矿回收白钨的选矿试验。试验对粗选和精选流程及粗选设备进行了多方案对比,选择了最佳方案。在完成小型试验后又完成了扩大试验,为建厂投产提供了可靠依据。 相似文献
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魏礼明 《金属材料与冶金工程》2014,(1):39-42
我国许多钢铁矿山企业铁矿石中伴生有云母,但在选铁过程中通常将其作为脉石矿物而随尾矿排放。某铁尾矿通过脱泥-碱性浮选选矿工艺研究可以回收产率10.17%,云母矿物含量96.19%的高纯度云母,有效地回收其中的云母资源,降低了尾矿排放量,具有良好的经济效益和社会效益。 相似文献
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Changqiao Yang Changquan Zhang Jiaxing Bai Zijie Guo 《Mineral Processing and Extractive Metallurgy Review》2018,39(1):44-49
Comprehensive utilization of tailings resources not only solves environmental problems but also creates huge economic benefits. In this paper, fine weakly magnetic particles were extracted from iron ore beneficiation tailings and silica (SiO2) was separated and purified using a superconducting high gradient magnetic separator. Based on plenty of contrast experiments, SiO2 content of the magnetic concentrate could be increased from 68.67% to 92.57% with the selected optimal parameter combination, i.e., a magnetic flux density of 3.2 T, a pulp concentration of 40 g/L and a slurry flow velocity of 500 mL/min. The concentrate can be utilized as low-grade normal SiO2 sands for industrial use, or act as the raw materials for preparing high-purity SiO2 product. 相似文献
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Rafaella Bicalho da Rocha José Pancrácio Ribeiro 《Mineral Processing and Extractive Metallurgy Review》2021,42(1):17-23
ABSTRACT Iron ore tailings dams at Quadrilátero Ferrífero, Minas Gerais (MG), Brazil, are full and present significant risks. The material contains approximately 30% of the iron, and recovering this iron is important in decreasing the environmental impact and increasing production. The objective of the present work was to study magnetic concentration of processing plant tailings. Pilot tests optimized the processing configuration, but the planned iron grade was only possible with cleaning stages. Industrial tests were configured into three concentration stages (rougher, cleaner, and recleaner), and obtained a 63% iron grade concentrate representing a mass recovery of around 15%. 相似文献
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在对某铜尾矿多元素、矿物组成和铁物相分析结果基础上,针对磁性铁和钙铁榴石分别进行了磁选、重选探索试验,重-磁和弱磁-强磁联合回收工艺对比研究。结果表明:采用弱磁-强磁联合工艺,磁性铁品位65.40%、回收率11.12%,钙铁榴石精矿品位为92.88%,回收率74.12%,综合产率达到70.93%。 相似文献