The mineral composition of limestone rock is mainly calcite or calcareous bioclasts (such as shells or biological bones, which are also composed of calcium carbonate), followed by dolomite, clay, silt, quartz, feldspar, glauconite, iron oxides, etc.
Limestone can be divided into grain-bearing limestone, micritic limestone, laminated limestone, biohermal limestone, chalk and so on according to its composition, structure, formation mechanism and impurities.
Because there are no rolling bearings and no screws in the grinding cavity, there are no such problems as damage to the bearings and their seals, as well as damage to the machine due to loose screws.
It can be used in the production of foundry sand, which has better performance than quartz sand for machinery manufacturing. It not only has good collapsibility, but can increase the surface finish of casting.
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