Casting-grade chrome ore dressing device and technology

Abstract

The invention discloses a casting-grade chrome ore dressing device. The casting-grade chrome ore dressing device comprises a feeding device used for feeding metallurgy-grade chrome ore, a drum screen used for screening the metallurgy-grade chrome ore, a spiral sluice system used for carrying out silicon removal on ore concentrate obtained through the drum screen, a dehydration unit used for carrying out dehydration on the ore concentrate obtained through the spiral sluice system, a drying device used for drying the dehydrated ore concentrate obtained through the dehydration unit, a cooling system used for cooling the dried ore concentrate obtained through the drying device, a rocker arm screen used for screening the cooled ore concentrate obtained through the cooling system and a dry type magnetic separation device used for carrying out magnetic separation on the on-screen ore obtained through the rocker arm screen. The invention further discloses a technology for carrying out ore dress of the casting-grade chrome ore through the casting-grade chrome ore dressing device. The casting-grade chrome ore dressing device and the technology are designed according to the feature of the casting-grade chrome ore, the ore dressing quality is improved, and the environment pollution is reduced.

Description

technical field [0001] The invention relates to a casting grade chrome ore beneficiation device and process. Background technique [0002] Due to the complex species contained in minerals, it needs to be sorted. Mineral beneficiation is the process of separating the desired substance from other impurities by certain means according to the different physical and chemical properties of minerals, including gravity separation, flotation, magnetic separation, electric separation and other means. The feed port of the traditional main sub-hopper is set on the top of the main sub-hopper, and the top of the main sub-hopper is completely open. When feeding, part of the material will overflow from the main sub-hopper, resulting in material waste. Tumble dryer, also known as drum drying equipment or tumble dryer, is the most common and widely used dryer equipment in mining equipment. It is suitable for drying magnetic, heavy, and floating concentrates of metal and non-metallic ores, ...

AI Technical Summary

Problems solved by technology

Most of the existing cooling equipment is for cooling pure solids or pure liquids. Small solid powders have a certain fluidity similar to liquids, but they also have the properties of solids. The existing method is usually to stack mineral powders for natural cooling. This method greatly affects the production efficiency of the entire production process

The problems existing in the current cooling equipment are as follows: 1. The powder is different from the bulk solid, and has a certain fluidity of the powder, but it is different from the fluidity of the liquid. If the ordinary drying equipment is used, the flow rate will be different in the equipment. uniform, resulting in local accumulation, resulting in poor operation of the equipment or even stuck

2. The cooling effect is poor, and it cannot meet the requirement that the ore powder directly enter the beneficiation process after cooling

3. Slow cooling speed and low production efficiency

The former situation leads to a decline in the recovery rate of magnetic components, mainly because the particle size of these magnetic particles is too fine, and the magnetic force is not enough to overcome the competitiveness of fluid resistance; the latter situation leads to a decline in the grade of magnetic products, mostly due to the There is a strong interaction force between particles, the finer the particle size, the greater the slurry concentration, the more obvious the interaction force between particles

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