Granite is mined using quarrying. It is quarried in South Korea, Italy, India, the U.S. and other countries around the world. Granite mining is a large industrial process which begins with exposing a granite deposit. Once the granite deposit is exposed open cast mining is the usual way to exploit the reserves. Granite is then extracted from the mine which is in itsself a difficult process.
Granite crushing plant is mainly refers to the jaw crusher and cone crusher. if the local market has not request of the stone shape, users prefer to use fineness jaw crusher, or compound cone crusher as the secondary 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. Impact crusher has the functions of crushing and shaping, can make very good cubic shape. 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.
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Spodumene: According to the hard rock crushing process, the crushed product is generally 5-40mm, combined with different design requirements of customers, two-end or three-stage crushing, high-grade crushed products (above 4-5%) can be directly used in the metallurgical process to produce lithium carbonate Or lithium hydroxide, the particle size of the finished product is generally around 20-40mm; low-grade generally requires ball mill grinding and separation, and the particle size of the finished product is generally around 5-20mm;
