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铬矿选矿


工艺

Using surface and underground methods, chrome mining typically requires subsequent processing at chrome ore processing plants to extract the valuable material. So the mainly used chrome ore concentrating equipments are ore washbox (sometimes it is called jigger), concentrating table, spiral classifiers, etc.

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工艺说明

Introduction: Using surface and underground methods, chrome mining typically requires subsequent processing at chrome ore processing plants to extract the valuable material. So the mainly used chrome ore concentrating equipments are ore washbox (sometimes it is called jigger), concentrating table, spiral classifiers, etc.

Application: The chrome ore mining production line works for all chrome ore types—magmatic, placer, weathered, low or high-grade. It handles 100k–1M tons yearly, upgrades low-grade ore, reclaims other metals, and keeps energy low, recovery high (70%–90%), and meets environmental rules.

  • Processing Technology

  • For chrome processing technology, there are gravity separation, flotation, magnetic separation and other methods. Shunzhi will determine the final processing technology according to the ore characteristic analysis report and mineral processing experiment report.

  • Gravity Separation

  • The common gravity separation flows is that: through crushing and grinding, the reasonable fineness of chrome ores are cleaned and classified by the spiral classifier with the help of the different specific gravity of the solid particles and the different precipitation speeds in the liquid.Then use a jig machine and a shaker to wash the materials and transport them to the spiral chute to sort fine-grained mineral powder.

  • Flotation or Magnetic Separation

  • After screening, the slurry is sent to flotation cell or magnetic separator. The concentrates are dewatered after flotation.

  • Dewatering

  • After dewatering, the concentrates can be sent to the dryer. The dry concentrates can be directly used or re-grinding to pick up minerals.

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工艺流程

  • 开采:铬矿多采用露天开采方式,部分埋藏较深的铬矿采用地下开采方式。

  • 破碎筛分:铬矿经颚式破碎机破碎后,通过振动筛分级不同粒度的矿石,并去除废石。

  • 洗矿(可选):若矿石含泥量较高,通过洗矿机去除矿泥,提高铬矿品位。

  • 重选:利用铬铁矿与脉石的密度差异,通过跳汰机、螺旋溜槽等重选设备富集铬铁矿,获得铬粗精矿。

  • 磁选(精选):铬铁矿具有磁性,通过磁选机去除非磁性脉石,进一步提纯铬精矿。

  • 浓缩脱水:对铬精矿进行浓缩脱水处理,得到铬精矿滤饼。

  • 干燥运输:将滤饼干燥后,将铬精矿运输至冶炼厂提取铬金属;部分块矿可直接作为冶金原料使用。

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