Introduction

Granite, one of the main rocks in the earth's crust, is an igneous rock formed by the condensation of magma beneath the earth's surface. The main components are feldspar and quartz. The etymology of granite is Latin granum, meaning grain or granule. Because granite is a plutonic rock, often can form well-developed, naked eye discernible mineral particles, hence the name. Granite is a deep-seated acidic igneous rock formed by the condensation of magma in the deep underground. Some granites are gneisses or migmatized rocks formed by metamorphism of magma and sedimentary rocks. Granite consists mainly of feldspar, quartz, black and white mica, and quartz content is 10% to 50%. The content of feldspar is about 2/3 of the total, which is divided into orthoclase, plagioclase (alkali lime) and microcline (potassium alkali). The mineral compositions of different varieties are not the same, but also contain pyroxene and hornblende.

Granite Processing technology

At present, the technology of granite processing equipment and granite crushing production line is quite mature in China. Vanguard Sandstone Projects Department has allocated production lines for granite production customers in many areas in China. The two-stage crushing process can be used in the crushing process of granite. The first stage is jaw crusher, the second stage is counter-attack crusher, and the circular vibrating screen can be used to separate 1-2, 2-4, 4-8 of course. Different specifications of stones to meet different architectural needs. Vanguard granite crusher has large crushing ratio, high output, uniform granularity, simple structure, convenient maintenance, low production costs, etc. Vanguard granite crusher has complete models, various types, and can also be tailored to meet customer requirements of the granite crushing production line. The granite crushing production line designed and produced by Vanguard is mainly composed of vibrating feeder, jaw crusher, counterattack crusher, vibrating screen, belt conveyor, centralized electronic control and other equipment. In order to meet the different processing needs of customers, it can be equipped with cone crusher and dust removal equipment. The design output is usually 50-500 tons / hour. Large pieces of stone are evenly fed into the crusher by the vibrating feeder in the silo for coarse crushing, and the crushed stone is further crushed by the belt conveyor to the counterattack crusher; the fine crushed stone is fed into the vibrating screen by the belt conveyor for screening, and several different specifications of stone are screened out to meet the requirements of grain size. The finished product is sent to the finished product stack by the belt conveyor, and the stone which does not meet the grain size requirement is sent back by the belt conveyor to the impact crusher for breaking again, forming a closed circuit multiple cycles. The finished product granularity can be combined and graded according to the user's needs. In order to protect the environment, auxiliary dust removal equipment can be equipped.
Granite macadam is a kind of high-quality and widely used building stone. It is hard to be eroded by acid-alkali or weathering because of its hard texture. Moreover, granite resources are abundant and widely distributed. Nine percent of China's land (about 800,000 square kilometers) is granite rock mass. Granite is characterized by its high compressive strength, low crushing value and endurance. Strong corrosion, good adhesion of asphalt and other characteristics, is generally recognized as the best stone materials used in the construction of highway, railway, airport runway in the world. Because of its porous and hard characteristics, mixing it in concrete can reduce the weight of the concrete, but also a strong, at the same time with sound insulation, heat insulation and other advantages. Point, become high quality lightweight aggregate concrete aggregate. Granite can be used to make mortar and concrete according to different stone specifications. 1-2, 2-4, 4-8 are very common stone specifications. China's infrastructure construction can not stop, the domestic granite market has been extremely hot, which has become a major driving force for the development of China's stone machinery industry.

Application fields Through the deep processing, Granite can be widely used in the following industries.

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