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Material analysis
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Granite Introduction

Granite is a rock layer formed by the magma condensing below the surface. It belongs to the category of igneous rocks. The main components are feldspar and quartz. Granite is named because it is a diagenesis deep in the crust, well-developed and visible to the naked eye. Granite is hard and hard to be attacked by acid or alkali or weathering. It is often used as a building material. Granite is not easy to weather, and its color is beautiful. It can be used not only for building sand, but also for plate and carving. Granite is widely distributed in China. The granite rock mass accounts for about 9% of the country ’s land area, reaching more than 800,000 square kilometers. Especially in the southeast region, large areas of various types of granite bodies are exposed, showing the large reserves. According to incomplete statistics, there are about 300 types of granite stones.

Granite is a type of deep acidic igneous rock, which belongs to magmatic rock, also known as granite. The content of silica is more than 70%. Blocks without stratification, granite mosaic structure, often spherical weathering. The color is lighter, and the ones with grayish white and red meat are more common. It is mainly composed of dark minerals such as quartz (hardness 7), feldspar (hardness 6) and a small amount of biotite (hardness 2-4). Quartz content is 20% to 40%. Alkaline feldspar is more than plagioclase, accounting for more than 2/3 of the total feldspar. Basic feldspar is various potassium feldspar and sodium feldspar, and plagioclase is mainly sodium feldspar or feldspar. Dark minerals are predominantly biotite, with a small amount of hornblende, with a granite structure or plaque-like structure.

Recommended equipment for granite processing
  • Recommended models: Vibrating feeders Features: Uniform feeding and high strength
  • Recommended model: HST315 single-cylinder cone crusher Features: Simple mechanism, easy maintenance, large feed and high crushing efficiency.
  • Recommended model: PF1515 impact crusher Equipment features: Suitable for weathered granite, easy maintenance, strong shaping ability
  • Recommended model: 400 type multi-cylinder cone crusher Features: Strong crushing capacity and grain shape optimization function.
Granite crushing process and technology

For granite used in the production of high-quality coarse aggregates for expressways, there are a variety of processes to achieve it. The crushing combination of the conventional jaw crusher + impact crusher can also handle granite, but a maintenance plan is required. The frequency of replacement of the hammer of the impact crusher will be increased, but the advantages are excellent. For hard granite, it is recommended to choose the combination of fine crushing and shaping in the cone crusher + shaper, or use multi-cylinder cone crushing as the auxiliary fine crushing device.

The process of granite crushing production line is roughly as follows:

Feeding—coarse crushing (E crushing) —medium crushing ( single-cylinder cone crushing, JY cone crushing, multi-cylinder cone crushing are all optional) —screening ——— fine crushing shaping Both crushing and impact crushers are optional)-Screening (screening requires a screening machine, and sometimes needs to be picked, generally used in sand washing machines, powder separators, dewatering screens, and fine sand recovery machines)-finished products .

Question: Do you want to use an impact crusher for granite crushing, or a cone crusher?

Answer: Both the cone crusher and jaw crusher are laminated crushing equipment , non-impact crushing, using the material's own stress crushing, and less wear than the impact crusher. Therefore, the cone crusher will definitely work, while the impact crusher will wear faster and require more frequent maintenance. The amount of granite crushing production line will be less and less, but because of the shape problem, it is indeed selected by the customer. In fact, the multi-cylinder hydraulic cone crusher can also promote the optimization of grain shape, and the current market usage is growing rapidly. The single-cylinder cone crusher and JY cone crusher are recommended to work with a shaper to optimize the stone shape as much as possible. Secondly, the cone crusher must ensure full feeding when feeding, which helps the lamination effect, promotes the optimization of the grain shape, and protects the broken wall.

Recommended Granite Processing Solutions



Shanghai Jianye Heavy Industry Machinery Co., Ltd. Address: No. 1389 Jinqiao Road, Pudong New District, Shanghai , Shanghai ICP No. 08511074 Shanghai Public Network Security No. 31011502002728

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