Crushing equipment mainly through mechanical force in industrial production -twinkle12

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(Free-Press-Release.com) January 1, 2012 --

Currently .in industrial production classification and grinding methods, we mainly use mechanical force, the most common are: (1) extrusion grade, is the use of two materials when rating face close to the pressure, so The gradual increase in force levels. Such as the roll crusher, jaw crusher, cone crusher and so on. (2) splitting levels, is the use of sharp tooth wedging materials generated when the split force, a higher concentration of the role of force, so that the surface material along the split into two levels, and in the splitting force generated at the local grade point . Such as single-, double-toothed roll crusher. (3) breaking or bending classification, the classification between the face material to withstand concentrated loads as two-point (or fulcrum) beam. In addition to the role of the split point by force, the key is to make the material subject to bending and classification. (4) ground, it is a graded materials on the sliding face, the shear force applied to the material, the surface of such a force on the part of the material, so materials for fine grinding. (5) the impact of classification, the instantaneous impact force acting on the material, the material rapidly crushed.

Broken equipment (also known as crusher) with separate stone crushing coal and the role of selected research. In the coal preparation plant has been generally application. Broken sorter is based on studies of coal and rock hardness of different pieces of the difference can be designed. Work, easily broken after the coal is crushed under the leak to the screen, and hard rock from research on the discharge screen. Therefore, when the hardness of the coal deposit and research on the differences between rock, that the mouth pieces of the difference can be significant. Broken pre-election screening machine for processing after the lump, also applies to coal. It can also be screening the mouth, broken, choose F large stone, metal and wood debris and other operations, to achieve a multi-purpose machine. With broken machines instead of manual sorting options study, to achieve a multifunctional purpose. Workers for the liberation of heavy manual labor, improve labor efficiency is of great significance. Broken machine in the election before the early 1980s, China conducted the study and application to the early 1990s there had been reports in this regard, but in the late 1990s as new technologies emerge broken no further reports in this regard and the results.

The choice of materials, classification is based on the granularity of the material, physical and mechanical properties, the required grade than other factors, the chosen classification method should be the most economical, most grade product after the next process requirements of the grain size. In the conventional classification method, the pure crushing, grinding, such as the impact of broken coal preparation plant is generally not suitable for classification. Splitting is a crusher on the site of wedge edge surface material, the material will then be graded tensile stress appeared in the tensile stress reached the tensile strength limit of the material, the material will be split and classification, such as the roll crusher classification.

As we all know, most of the compressive strength of rock and mineral materials is much higher than its shear and tensile strength. Low shear and tensile strength is due to shear and tension in the role, the rock and mineral deficiencies that exist within the material (joints and cracks) easy to produce stress concentration and cracking. Therefore, materials or stored perpendicular pulled cracking under stress, or under the action of shear slip, or keep the two together under the classification. Therefore, the use of shear and tensile strength to a higher grade material classification efficiency.

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