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The gangue is a kind of solid garbage discharged during the coal mining and coal washing. And it is formed with the coal layer during the coal forming. The gangue is a kind of black rocks with low contents of coal and a higher hardness than the coal. The utilization of gangue is quite simple, basically in the brick production. Therefore, we have to take the comprehensive investment reward into consideration while choosing the crushing equipment. We have a lot of crushing equipment to make the brick with gangue, which requires for a fineness below 8 mm. But the value of the investment would be quite different.
The Impact Crusher
The impact crusher is not designed to process the coal gangue, while its specialty is to produces stones for highway and railway construction. If we use the cone crusher, it can be complete waste, while the cone crusher is not for processing the gangue but for mining crushing. So the cone crusher is quite wasteful and expensive for gangue processing. Another way to process the gangue is the hammer crusher, which has grates. Its price is quite close to the jaw crusher’s. Hammer crusher is more suitable for fine crushing with much more wear to the quick-wear parts.
The hanmer crusher
Hammer crusher is used for crushing medium hard materials with weak abrasiveness, and the compression strength of the materials to be crushed should not exceed 100MPa, and the water content should be lower than 15%. The materials that can be crushed by hammer crusher include coal, salt, chalk, gypsum, tile and limestone and also fiber structure and broken wood and paper with strong elasticity and tenacity.
The Jaw Crusher
Jaw crusher is suitable for coarse crushing, so that it has a low capacity of fine crushing. So the jaw crusher is usually equipped with sand making machine to reach a higher fineness range, such as 200 meshes, so that the bricks produced are much more compact and in good shape, of course, also with a higher cost. This kind of investment is better than average, but with a low productivity, this layout is suitable for the medium and factories which emphasis on the quality,
construction chute: http://www.jaw-breakers.com/T132.htmlSeveral key machines in coal forming line
