- Common crushing processes of ore dressing plant are there?
- Ore crushing and grinding generally includes the steps?
- How to determine the most reasonable particle size of crushed minerals?
- Environmental study
- Excess air
- Error (signal)
- Spiral concentrator
- Solvent extraction-Electrowinning (SX-EW)
- Single jack
- Shortwall mining
- Short ton
How to determine the most reasonable particle size of crushed minerals?
Chunks of ore from the quarry to get a smaller particle size products after crushing operation, the product of a certain size for grinding operations, which is broken ore task. For crushing operations, the larger the particle size of the crushed mineral, the higher the productivity of the crusher, the crushing cost of the more at the end. However, for the grinding operation, the mill's production capacity will increase with the particle size by the mine reduced the contrary, if through the ore particle size decreases, improved production capacity of the grinding machine, grinding costs can be reduced . In general, conventional crushing grinding process, the smaller the energy consumption of the crushing, grinding energy consumption is much greater. According to statistics, the crushing grinding energy consumption of only 12% to 25%, and crushing efficiency higher tbm that of grinding.
Therefore, in the comminution system should minimize mineral grain celebrate, give full play to the role to improve the mill's processing capacity, known as "multi Suixiao the grinding" broken. Crushed mineral particle size decreases, as the grinding media ball diameter can be reduced, thus increasing the grinding stripping the mill's production capacity to improve the ball consumption can be reduced. The final crushing of particle size and size of the concentrator has a great relationship.
Concentrator larger the economic effects of reduced grinding feed size the more significant. For example, it has been calculated for the 10 million tons / year concentrator, when the crushing of the final particle size is reduced to from 20 to 0 mm 12 0 mm, although the fragmentation of production capacity decreased by 1/3, but the ball mill the ability can be increased by 16%, investment in equipment can save 1.051 million yuan, the installed power of 3855 kilowatts each section to save consumption of 3058.5 kwh, accounting for 10% of the electricity consumption of the whole plant.
Of course, we must consider other factors. Equipment factors, the last paragraph of the short head cone crusher, crushing the product of the final particle size is actually not less tbm 6 to 8 mm. In order to avoid the difficulties that occur in the closed-circuit work, often ore the final particle size of 8 to 10 mm or even larger, sometimes relaxed to 10 to 15 mm. If you install a roller machine, although you can get the final particle size of 5 mm, but to consider the aspects of configuration and management fees. In the design should ensure that the appropriate port of discharge of the broken pieces of machine shall not exceed the minimum allowable width of the port of discharge. So that the device can work properly under the conditions of minimum crushing product size. Most suitable for the broken mineral particle size and fragmentation processes have a great relationship.
In summary, to determine the most reasonable crushing particle size and the size of the concentrator scale used crushing equipment as well as the use of crushing process factors. According to the principle of "grinding" more crushing less, it should send the smallest crushing particle size is appropriate.
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