1 minute to learn about quartz minerals

Release time:

2024-01-29 09:36


1 minute to learn about quartz minerals


Quartz is a hard, wear-resistant, chemically stable silicate mineral.


The names of quartz mineral rocks include quartz, crystal, opal, flint, flint, agate, quartz sandstone, siliceous rock, quartzite, etc. The market application names include quartz raw ore, vein quartz, lard, quartz sand, silica sand, quartz powder, silica micropowder, sea sand, river sand, foundry sand, glass sand, crystal, agate, etc.




physicochemical properties

The chemical composition is mainly SiO2, which is generally pure, but often contains some relatively complex mechanical admixed materials and particle inclusions, and some trace elements can enter the quartz structure to replace silicon.

Pure quartz crystal is colorless and transparent, but it often shows different colors due to some inclusions and trace elements, generally milky white, colorless and gray; glass luster, fracture grease luster. Specific gravity 2.22-2.65; Mohs hardness 7.0;PH 6.0; Melting point 1750 ℃; Piezoelectric. Quartz powder is non-toxic, tasteless, non-polluting, good temperature resistance, acid and alkali corrosion resistance, poor thermal conductivity, high insulation, low expansion, stable chemical properties, and high hardness.


development application

Quartz is widely used in glass, casting, ceramics and refractories, metallurgy, construction, chemicals, plastics, rubber, abrasives, electronics, coatings, aerospace, jewelry and other industries.


Glass industry


Quartz is the main raw material for making glass. Quartz glass has been widely used due to its small thermal expansion coefficient, good thermal shock stability, good electrical properties, and good chemical corrosion resistance.


ceramic industry


Quartz has an important effect on the ceramic body heated at room temperature. Before firing, quartz plays a regulating role in the plasticity of clay in the blank, and can reduce shrinkage during drying, shorten drying time and prevent deformation of the blank. During firing, the heating and expansion of quartz properly offset the shrinkage of the blank during firing. Moreover, when a large number of vitreous materials appear, quartz becomes the skeleton of ceramics, which can prevent the blank from bending and deformation during firing. In addition, quartz can also increase the binding capacity, mechanical strength and transparency of the body.


Quartz used in ceramic glaze can increase the mechanical strength of the glaze, improve the hardness of the glaze, make the porcelain crystal wear-resistant, and the chemical stability is good, not affected by the erosion of acid, but also can make the glaze transparent and bright.


building materials industry



Ordinary quartz sand powder and refined quartz sand powder can be used in the manufacture of artificial quartz plate, used in the kitchen and other countertops, but also can be used for ceramic tile glue, dry mortar, cement standard sand, football field laying sand, etc., of which artificial quartz stone has become a new countertop material in the world, more and more into the consumer family in Europe and the United States.

Quartz powder is used for cement to significantly improve the compressive, flexural, impermeability, corrosion, impact resistance and wear resistance, with water retention, prevent segregation, bleeding, greatly reduce the role of concrete pumping resistance, significantly prolong the service life of concrete, greatly reduce the shotcrete and castable floor ash, improve the thickness of a single spray layer.


Casting, grinding


The market share of quartz sand products used in the foundry industry is about 40%. Casting sand is used to prepare molding sand and core sand in production. Casting quartz sand is divided into resin sand casting, sodium silicate sand casting, lost foam casting, etc. In addition, abrasive materials (sandblasting, hard abrasive paper, sandpaper, abrasive cloth, etc.) also use a large number of quartz sand.




Quartz powder is non-toxic, tasteless, non-polluting, good temperature resistance, acid and alkali corrosion resistance, poor thermal conductivity, high insulation, low expansion, stable chemical properties, high hardness and other excellent properties, widely used in silicone rubber such as silicone rubber gloves, seals, shoes, etc. Powder quartz as a filler can be used in rubber products, such as in the battery shell, the addition of powder quartz is mainly used to replace clay and light calcium carbonate as a filler, the resulting battery shell without bubbles and burst phenomenon, the shell appearance is smooth, high yield.




The use of quartz powder to replace precipitated barium sulfate and talcum powder and other physical pigments in dark paint can not only play the role of filler, but also improve the fineness of paint, film hardness and water resistance, as well as rust and corrosion resistance, while reducing the cost of raw materials, with good economic benefits.


water glass


Quartz sand, soda ash (or earth alkali) in the melting furnace co-melting, cooling and crushing can be made of water glass. Water glass has a wide range of uses. It is used in chemical systems to manufacture various silicate products such as silica gel, white carbon black, zeolite molecular sieve, sodium metasilicate, silica sol, potassium sodium silicate, etc. In light industry, it is an indispensable raw material for washing powder, soap and other detergents, and is also a water quality softener and sedimentation aid. In the textile industry, it is widely used in casting and metal preservatives; in the construction industry, it is used to manufacture quick-drying cement, acid-resistant cement waterproof oil, soil curing agent, refractory material, etc.; in agriculture, it can manufacture silicon fertilizer.


electronic industry



The defect-free crystal single crystal has piezoelectric properties and can be used in the manufacture of resonators, filters, and is widely used in automatic weapons, electron microscopes, timemeters, electronic computers, artificial earth satellites and other scientific and technological navigation, remote control, telemetry, electronic telecommunications equipment and other aspects.




Crystal is born beautiful, colorful, from colorless and transparent to purple, yellow, tea, smoke, ink, green and red, pink, rainbow colors are all inclusive, is the rich color of the outstanding gem; In addition, blood jade jade jade texture is hard, delicate, bright color, magnificent, magnificent, so far in the quartzite jade texture, color, durability are excellent new varieties of rare jade, it has extremely high economic, cultural, artistic and collection value; agate is rich in color, divided into red, blue, purple, green, black, white, colorful and other agates according to color. Among them, red agate is the best, and colorful agate is a unique and rare variety.


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