If the local market does not require the stone shape, users prefer to use fineness Jaw crusher, or Compound cone crusher as the secondary crusher. Because for high hardness stones, the quick wear parts cost of fineness crusher/cone crusher is lower than that of impact crusher. For Jaw crusher and compound cone crusher, the working principle is plate pressing, so the percentage of stones with flaky shape, internal cracks is high. For impact crusher, it has the functions of crushing and shaping, and can make very good cubic shape; the stone materials are mainly used for highway, water conservancy, airport, civil construction etc. The market prices of stones made by impact crusher is higher than that by fineness Jaw crusher or compound cone crusher; the quick wear parts cost of impact crusher is also high for high hardness stones.
If the market has request for the stone shape, and the users want to reduce the quick wear parts cost, here we recommend firstly use primary Jaw crusher fineness Jaw crusher compound cone crusher as the primary and secondary crushers, take the impact crusher as the tertiary crusher to shape the stones. This proposal has been adopted by many users, and proved to be workable.
Limestone are important rocks. They can be used for building materials but are not quite as strong as sandstone and are easily weathered by acidic conditions. Limestone are the primary source of lime for cements. Cement is considered one of the most important construction materials ever invented by man. Limestone can be crushed and used as road ballast. Significant quantities of limestone are quarried around the world for these purposes.
The main motor drives main axle and each layer of dial to rotate through reducer, and the rotating dial makes dozens of rollers roll and rotate in the ring by pintles. Big materials are reduced to smaller particles by crusher. Then they are sent to stock bin by an elevator. The electromagnetic vibrating feeder sends the materials evenly to the middle of the upper dial. Under the function of eccentricity, the materials fall into the grinding ring to be pressed, crushed and milled into small pieces by rollers. After being ground in the first layer, the materials fall into the second and the third layer for milling.
High-pressure centrifugal blower sucks the outside air into the machine and brings the third layer-milled coarse power into the classifier. The rotating turbine in the classifier makes the coarse materials fall back for regrinding. The fine particles come into the cyclone collector with the air flow and are discharged by the discharge valve on the bottom of the collector. After being purified, the air flow with little dust is discharged through blower and muffler.
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