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INDUSTRY NEWS

Iron ore crushing process

Iron ore crusher is a kind of iron ore will be progressively broken, raw iron ore from the large (500mm or so) to the millimeter level-crushing machinery and equipment of fine material, usually dry separation of iron ore machines for enrichment of lean ore operations, the enrichment of iron ore into the mill for grinding high-grade ore, and then choose the way wet separation and extraction of iron powder.

Iron ore crushing process

Iron ore crushing process generally uses a feeder, the first break, second break, screening, crushing, dry a few choose this procedure, for economic reasons, usually dry sorters into the finer particle size of ore, containing iron ore is the higher proportion of dry elected. Some small concentrator broken jaw broken directly to the fine iron ore for dry separation operations, resulting in a very serious waste of natural resources.
Therefore, the selection of the most economical mode of production, the maximum rate will be dry separation of iron ore, iron ore beneficiation unit to face and study. Currently a large number of individual mineral processing unit using the traditional hammer break, which is a minimum investment cost of production model, not only the production efficiency is low, but also caused great waste of natural resources.

First break:

Iron ore production operations in the first broken jaw crusher is generally used in large production units (especially foreign large-scale mining) using cycles crusher. Jaw Crusher is the most traditional and most reliable coarse crushing equipment, the most extensive range of applications. Currently jaw crusher manufacturing process and technology is very mature, as long as the use of the formal product manufacturers, are able to meet the design and production requirements.

Second break:

Iron ore crushing process, the choice of second breaking there are two types: either small jaw crusher, cone crusher either.
Fine broken jaw general election for the smaller iron ore market, the lower the value of their equipment, simple structure, simple and easy to maintain. However, fine jaw crusher discharge opening adjusted to the minimum can only 25mm, so the broken particle size is generally less than 40mm.
Cone crusher structure is more complex, higher value of the equipment. However, the production of large, broken fine-grained, wear parts with longer life time. Therefore, the cone crusher in the more large-scale iron ore selection field has been widely used. From iron ore production efficiency and cost, the use of cone crusher can effectively reduce production costs. Because the cone crusher can provide a smaller particle size, the whole process from the point of view, the use of lamination equipment to complete the major iron ore crushing task is the most economic mode of production.

Screening, crushing and dry separation:

Screening devices generally use a round vibrating screen, breaking the two materials to complete the screening operation. Generally can be 10mm or less after dry screening of material selection, 10 ~ 40mm screening of material into the crushing machine crushing operation, 40mm above the material to return back to the second break in the broken material. Of course, the screening of the particle size range can be adjusted according to actual, in order to achieve the most economical mode of operation.
Screening devices generally use a round vibrating screen, breaking the two materials to complete the screening operation. Generally can be 10mm or less after dry screening of material selection, 10 ~ 40mm screening of material into the crushing machine crushing operation, 40mm above the material to return back to the second break in the broken material. Of course, the screening of the particle size range can be adjusted according to the actual order of the type of crushing equipment, more, generally divided into hammer break (vertical, horizontal), efficient fine crusher, roller crusher, short head cone crusher machine, and the recently developed vertical shaft impact crushing machine super. The crushing equipment, crushing their different principles for different environments.

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