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The shale mining processing equipment

Shale processing equipment from the ground mainly by the friction between particles and in part by the impact and, accordingly, the mill’s energy consumption is higher than the rod mill sails (about twice) (9). Shale Impact Crusher depends mainly on the role and in part by friction. Far away from the grinding media producer or can not produce their own grinding media in some countries, often using gravel mill. Generally from the grinding process, grinding is frequently used in the mine and then milling, gravel milling and grinding units higher than target, and less investment in infrastructure. To this end, shale in the pebble mill equipment and sometimes into the ball to medium body, and sometimes replace the pebble mill Ball Mill.

For example, in Nu concentrator (Australia) for the mine and then install the two ball mill grinding (95-100 m) instead of five pebble mill (85-90 m). As a result, lower production costs, and infrastructure costs by 20%. Certain types of shale crusher with high density and viscosity variations of iron ore from the mill should not be used (such as Mikhail Pavlov ore hematite – magnetite ore, etc.). Sometimes this approach. Once the process E unreasonable, because it can not be dry magnetic separation. At the same time, most of the minerals, especially magnetite skarn mineral stone and metal embedded in the cloth was coarse-grained magnetite-quartzite, the use of non-milling ore to be successful. Shale crusher ore play abrasive particle size is 300-100 (75) mm.

The shale crusher processing process

Shale shale crusher for multi-stage crushing, in addition, when the rod mill and ball mill, the steel bars and steel balls in the form of consumption of the metal at a cost of 35% of the total cost of beneficiation.

In many cases, difficult to achieve milling grinding particle size 0.05 mm below the shale processing equipment in the ground very fine disseminated ore, in order to make the metal minerals and non-metallic mineral dissociation, must be ground to such a size.

When the self-mill, in a complete unit in the waves, crushing and grinding the ore to the size required for roughing. In this case, the crushing and grinding of materials between the crushing power of re-distribution, which simplifies the broken – concentrator equipment contact process, and a few no grinding of metal consumption. However, the material ground faster than when using a low grinding media (based on ore hardness was reduced by approximately 33-50%). B. Fa Geer other erg and N. A Helin assertion, when the same energy, shale grinding method using a variety of equipment can get roughly the same quality of concentrate and tailings. According to their opinion, there is no evidence from the ground than the rod mill grinding with high selectivity.

The shale equipment introduction and description of the grinding process

Shale mining equipment to +100 mm in grain size not less than 40%, the mill can be reliable and eye work effectively. When the mine in the +1.50 mm size fraction from 18% to 24%, the production capacity increased by 10%; and from 20% to 40%, the production capacity increased by 15%. At the same time, improve the content and will be part of the grinding mill to the mine – the limit of particle size increased to +300 (250) mm, it will significantly reduce the mill native ability. Mill to the ore particle size increased to 380 mm or more, leading to increased circulating load, and to reduce production capacity of 20-25%. Shale crusher to grind some of the critical size, the more common is to add the ball mill.

In this case, you can work to ensure stability of shale crusher, production capacity (or grinding size reduction) and reduce power consumption. Shale equipment grinding ball consumption indices of pairs of other countries in the application of iron ore from the dry mill method, and only the use of gas in a drop-type grinding mill. Dry grinding of the main advantages is that even in the first paragraph on the use of centrifugal separator can concentrate points selected. Meanwhile, the shale processing equipment using dry grinding method, due to high dust greatly evil than the concentrator working conditions.