crusher for manganese ore

The dominant approaches of tungsten ore dressing are physical mineral processing, for instance preconcentration, gravity separation, flotation and magnetic separation. For challenging dressed medium mineral and low grade concentrate, chemical mineral processing might be utilized. According to mineral washability, the tungsten ore dressing could be classified into two kinds, black tungsten ore dressing method which offers priority to gravity separation and white tungsten ore dressing approach which gives priority to flotation.

Black tungsten ore dressing process

Black tungsten ore features high ore dilution rate, low grade, coarse mineral disseminated grain size, massive density, low hardness, effortless to become pelitization and dark colour. So dressing strategy gives priority to gravity separation.
The process flow consists of 4 parts, preconcentration, grading gravity separation, selectness and extensive recovery, and fine mud therapy.

Preconcentration

Preconcentration of black tungsten ore will do ore washing and desliming and classification initially. The preconcentration adopts hand choosing, photoelectric dressing and heavy media separation. The applied dressing equipments are heavy media precessing machine and photoelectric dressing machine, and so forth.

Gravity separation

Gravity separation approach would be the most important process of black tungsten ore dressing approach. The tungsten ore has huge density so gravity separation method can correctly separate the tungsten ores from lots of minerals grains whose density is less than three.5-4. In gravity separation, jigger and shaking table are the most commonly utilised devices. When dressing the black tungsten ores with coarse and medium disseminated grains, jigger has an important part. So just before dressing, the ores are sieved, graded for jigging. Jigger are employed in grinding cycle to reduce tungsten ore pelitization and also the tungsten ores which might be monomer disintegrated before it is actually too late. Jigger can dress the tungsten ore concentrates, which is more than 50% of factory total recovery.

After preconcentration, the ores is usually crushed into -12mm then come by way of gradation and gravity separation. The coarse ore grains will come by way of 3 level jigging. Jigger perform offers priority to twin-bucket diaphragm jigger. The big dressing plant utilizes 1000mm×1000mm MeXaHoБp jigger. The saking table gravity separation could be done in 4-6 level. Prior to shaking table gravity separation, a stage of two stage ore grinding should be completed. There is certainly also the ore grinding method for medium ores regrinding. A single stage ore grinding adopts rod mill. Two stages ore grinding adopts ball mill or rod mill.

crusher for manganese ore

The separation makes use of bracket technique and convex roller shaking table. In China, some tungsten ores dressing plants adopt spring variety shaking table. Significant and medium tungsten ores dressing plant have selectness and associated metal comprehensive recovery method. In compact tungsten ore dressing plants, the coarse concentrates are sent to special concentration plants for selectness and related metal complete recovery. The selectness will use gravity separation, table flotation, the flotation, magnetic separation, electric separation and chemical dressing, and so on. Selectness recovery is 95%-98%. Shaking table is used in selectness to further improve the grade of tungsten concentrates. Table flotation and flotation can do extensive recovery of connected sulfide ores. The magnetic separation and electric separation can separate the black tungsten ores, tin stone and nb-ta mineral, etc.

White tungsten ore dressing approach and white tungsten ore dressing technology

Chemical mineral processing is used for processing the tungsten medium ores which are hard to be dressed as well as the concentrates with low grade to make complicated white tungsten ore and ammonium paratungstate. In accordance with the ore dipping characteristics, the white tungsten ore dressing course of action will use the combined gravity separation and flotation, or single flotation. Individual white tungsten concentrator will do preconcentration.

The white tungsten ores capabilities with great flotability. For there are several kinds of calcium contained gangue minerals whose properties are comparable to white tungsten ores, such as calcite, fluorite and apatite, and so on. These gangue minerals will result in the complexity of flotation method. To enhance the selectivity of flotation method, polyvalent metal salt are going to be added into sodium silicate to ensure that the white tungsten flotation effect might be enhanced proficiently.

The white tungsten ores are connected with sulfide ores, especially with pyrrhotite. In quartz, there are a few quantity of monomer white tungsten ores made. The crushing procedure is three stage as well as a closed-circuit method. The largest size of raw ores is 450mm and also the crushing final size is 10mm. The ore grinding is often a stage of closed-circuit. The grain size of white tungsten ores is 0.1-0.2mm, the larger a single is 0.6mm and the minimum is 0.016mm. The flotation is element differential flotation.
White tungsten ores flotation approach can adopt two coarse concentration, 3 scavenging and 5 selectness. The white tungsten ores that are got will be the initially grade and 1st level. The connected beneficial elements, which include copper and sulfur, are going to be recycled in production.

Tungsten ores crushing and grinding devices

Tungsten ores crushing and grinding devices will be the main 7 sorts, 1. Vertical impact crusher; 2. Vertical impact fine crusher; three.Reversible impact crusher; four. Reversible hammer crusher; five. Roller crusher; six. Cone crusher; 7. Rod mill.

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