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Introduction To Chrome Mineral Processing Technology And Equipment
2022-05-01 Xinhai (362)
2022-05-01 Xinhai (362)
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Chrome ore is one of the rare metals, ranking first among "strategic metals". As a non-renewable resource, its obvious feature is scarcity. Chromium ore is widely used in the metallurgical industry to produce ferrochromium alloy and metallic chromium, to manufacture chrome bricks, chrome-magnesium bricks and other special refractory materials, and to produce catalysts in the chemical industry. How to extract chrome ore from raw ore? Next, this article will introduce the chrome ore beneficiation process and equipment.
Gravity separation is a method of sorting ore based on the difference in mineral density of the ore. From the perspective of production practice, gravity separation is still the main method of chrome extraction in the world. The equipment commonly used in the gravity separation method is a jig, a spiral chute and a shaking table.
Jig machine belongs to deep groove sorting. The equipment has large processing capacity, simple operation and wide application, and can obtain the final product in one sorting.
Spiral chute belongs to sloping flow separation, the equipment has large processing capacity, simple operation and wide application, but the disadvantage is that the enrichment ratio of ore dressing is low, and it is generally used as roughing equipment.
The shaker is a device for sorting fine-grained ores with a high enrichment ratio. Generally, it is used as a beneficiation device and can directly obtain the final concentrate. However, the processing capacity of the single device is too small, the efficiency is low, and the floor space is large.
Magnetic separation is a method of sorting ores according to the different magnetic permeability of minerals. Weak magnetic separation can remove magnetite in chrome ore, and strong magnetic separation can recover chromite with weak magnetic properties in ore. The equipment commonly used in the magnetic separation method is a permanent magnet drum magnetic separator.
The permanent magnet drum type magnetic separator has strong adaptability and can obtain superior beneficiation indexes of high grade and high recovery rate at the same time.
Flotation is a method of sorting ores with the help of chemicals by using the difference in natural or modified wettability of mineral surfaces. Flotation is mainly used to treat fine-grained chrome ore. The process is complicated, and the power consumption and chemical cost are high. It is often used when gravity separation and magnetic separation cannot achieve good treatment results. The equipment commonly used in the flotation method is the flotation cell.
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