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

Granite is needed for granite mining. The hardness of granite is higher, so the granite sand making process should be designed reasonably, and the cost of production line must be considered while the investment cost of crushing project is considered. In the crushing operation of granite, the abrasion of wear parts such as jaw plate, hammer, crusher mantle and throwing head is very high. Therefore, in the design of crushing technology, the crushing equipment of lamination principle should be selected as far as possible to reduce the abrasion of wear parts. Granite sand production line is mainly composed of feeder, jaw crusher, impact crusher, sand making machine, vibrating screen, belt conveyor and centralized electronic control equipment. The whole production line, in addition to the switching machine and maintenance needs manpower costs, greatly reduces production costs, high capacity, low energy consumption, excellent grain shape, in line with the national high-speed materials requirement. Granite sand production line is advanced in design, excellent in performance, high in production efficiency, convenient in use and maintenance, economical in operation cost, stable and reliable in work. Sand machine series have a great development in China's mining machinery industry. The granite sand machine manufactured in Vanguard, especially in the production of artificial sand, is a necessary equipment in the sand industry.
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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