Granite density properties and uses

Everyone knows that granite has the characteristics of hardness, wear resistance, high temperature resistance, corrosion resistance, and beauty. Do you know how granite is formed? What is the density? What is the hardness? What is the structural composition? What are the properties? What are the uses and values of granite? With these questions, Xingaonai Heavy Industry will introduce granite in detail.

How is granite formed?

The formation process of granite is quite complicated. It is formed by magma erupting to the ground and solidifying after cooling. It is an igneous rock formed by sedimentary rocks or volcanic rocks under high temperature and high pressure, and undergoing deep crust metamorphism and melting.

Density of granite

The density of granite is generally 2.79-3.07 grams per cubic centimeter (g/cm³). If converted to kilograms per cubic meter, it is 2790-3070 kilograms per cubic meter (kg/m³).

There are many factors that affect the density of granite, including particle size, porosity, mineral composition, temperature and pressure during the formation process. For example, granite containing quartz and feldspar has a higher density, while granite containing hornblende and mica has a lower density.

Is granite denser than copper?

The density of granite is 2.79-3.07g/cm³, and the density of copper is 8.96g/cm³, so granite is less dense than copper, that is, copper is denser than granite.

Hardness of granite

The hardness of granite is about 6-7 degrees on the Mohs scale, and the material is very hard. The composition of rock crystals directly affects the hardness of granite. Different types of granite have relatively high hardness. For example, American platinum granite and British brown granite have high hardness and are very popular with the public.

Structural composition of granite

Granite is mainly composed of quartz, amphibole, feldspar, mica, etc.

The structure of granite is varied and is generally divided into granite structure, equigranular structure, porphyritic structure, massive structure, etc. Granite with a porphyritic structure dominated by orthoclase is called porphyritic granite, and granite with a fine-grained, medium-grained, coarse-grained and equigranular structure is called equigranular granite.

Chemical properties of granite

Silicon dioxide and aluminum oxide are the main chemical components of granite. The highest content of granite is silicon dioxide, which is about 65%-85%. Because granite has a high content of aluminosilicate, it belongs to the category of aluminosilicate rocks. In addition, the quartz, feldspar, mica and trace minerals contained in granite also respond to the chemical properties of granite.

Granite is also durable and acid-resistant, and is not easily deteriorated by weathering and acidic substances, which allows granite to maintain stable performance and beauty in many environments.

Physical properties of granite

The mineral composition and content of granite directly affect the color of granite, which generally presents grayish white, light flesh red and light gray. There are fine-grained and medium-coarse-grained structures, as well as blocky, mottled and spherical structures. The density is 2.79-3.07 grams per cubic centimeter, the porosity is between 0.04 and 2.8%, the hardness is between Mohs 6 and 7, and the compressive strength is generally between 100 and 300 MPa.

Granite has a certain amount of conductive minerals, so it has a certain conductive property, and the resistivity is between 60 and 10000 Ω·m.

In its natural state, granite has a high sound transmission speed, with a sound wave speed of about 5000-6000 m/s.

Uses of granite

Construction field: Granite has the characteristics of corrosion resistance, high hardness, high temperature resistance and beauty. It is widely used in floors, walls, columns and other buildings, making the buildings more beautiful and solid.

Decoration field: Granite has natural colors and textures, and can be used to make exquisite sculptures and artworks and other interior decoration materials.

Road bridges: Bridges, roads, parks and squares built with granite are not only wear-resistant and pressure-resistant, but also beautiful.

Environmental engineering: Granite can also be used to build water conservancy infrastructure such as dams and dikes, and also plays an important role in environmental engineering.

Chemical industry: Granite is widely used in the lining of chemical equipment due to its good chemical stability, alkali resistance, acid resistance and corrosion resistance.

Shipbuilding industry: It is mainly used to manufacture portholes and decks of ships.

Granite crushing and sand production line process

Granite is mainly composed of high-hardness quartz and feldspar, which is strong, durable, anti-oxidation and corrosion-resistant. Therefore, sand made of granite is widely used in house construction, roads and railways, etc. It can also be used as decoration materials and is deeply loved by the public.

The production line process is: feeding, coarse crushing, medium and fine crushing, sand making, screening, and sand washing. The material is evenly sent to the feed port of the jaw crusher through a vibrating feeder for coarse crushing, and the large pieces of granite are broken into small pieces. The crushed material is screened by a vibrating screen, and the large pieces are crushed again. The qualified material is sent to the cone crusher by a conveyor for medium and fine crushing. The finely crushed material is then sent to the sand making machine for fine crushing. Finally, after screening by the screening equipment, the material is washed by a sand washing machine, and the clean granite sand is produced.