What is bauxite and what is bauxite?

Bauxite, also known as bauxite or bauxite, bauxite and its composition are abnormal summer miscellaneous, is a variety of geological ** very different hydrous alumina ore general name, bauxite is generally formed by chemical weathering or exogenous action, few pure minerals, always contains some impurity minerals, more or less contains clay minerals, iron minerals, titanium minerals and detrital heavy minerals and so on. The main component of bauxite is alumina, which is hydrated alumina containing impurities, which is a soil-like mineral. White or off-white, brownish yellow or light red due to the presence of iron.

Density hardness 1 3, opaque, brittle. Extremely difficult to melt. Insoluble in water, soluble in sulfuric acid, sodium hydroxide solution.

Strictly speaking, bauxite is bauxite, and bauxite is bauxite. The name is not uniform enough internationally, why? This is because the mining period is different in each country, and the name of each period is different, resulting in the emergence of the two names bauxite and bauxite.

In China, the language habits are different in different places, and the names are also different. Some are also called bauxite, but they are all the same, and people who understand bauxite know that bauxite is bauxite.

Bauxite (bauxite) resources are very rich in China, the production area is all over the country, about 3.7 billion tons, ranking first in the world, and the high bauxite (bauxite) used in the production of refractory materials is also the first in the world, and the quality is also quite good, China's bauxite density is also very high, unlike bauxite (bauxite) in other countries with high iron content, and the density is not good, and the use is not as wide as China's.

The scientific name of bauxite ore is bauxite, bauxite. Its composition is extremely complex, and it is a general term for a variety of hydrous alumina ores with very different geology. Such as diasporite monohydrate, diasporite monohydrate and diaspore (Al2O3·3H2O); some are composed of diaspore and kaolinite (2SiO2·Al2O3·2H2O); Some are mainly kaolinite, and with the increase of kaolinite content, they are composed of general bauxite or kaolinite clay.

Bauxite is generally formed by chemical weathering or exogenous action, rarely pure minerals, always contains some impurity minerals, more or less contains clay minerals, iron minerals, titanium minerals and detrital heavy minerals, etc.

Aluminous soil Bauxite), also known as bauxite or bauxite, is mainly composed of alumina, which is hydrated alumina containing impurities, and is an earth-like mineral. White or off-white, brownish yellow or light red due to the presence of iron. Density hardness 1 3, opaque, brittle.

Extremely difficult to melt. Insoluble in water, soluble in sulfuric acid, sodium hydroxide solution. It is mainly used for smelting aluminum and making refractory materials.

The so-called bauxite in the refractory industry usually refers to bauxite with low Fe2O3 content > = 48% after calcination, and high bauxite clinker is calcined bauxite. The clinker is grayish-white, light yellow and dark gray, and it is mainly used for high-alumina refractories, and can also be used to make fused brown corundum. The clinker of high alumina bauxite is graded according to the content of Al2O3, Fe2O3, TiO2, CaO+MGO, K2O+Na2O and other impurities, and the volume density and water absorption of clinker.

Light-burned bauxite, also known as light-burned powder, is the raw material of polyaluminum chloride of water purification agent, and is a mineral powder material produced by bauxite through processing, the main component is alumina, which is hydrated alumina containing impurities, and is a kind of soil-like mineral. White or off-white, brownish yellow or light red due to the presence of iron. Density hardness 1 3, opaque, brittle.

Extremely difficult to melt. Insoluble in water, soluble in sulfuric acid, sodium hydroxide solution.

Bauxite is also known as bauxite or bauxite.

The main component is alumina, which is hydrated alumina containing impurities, and is a soil-like mineral of Zheng Fujian. White or off-white, brownish yellow or light red due to the presence of iron. Density hardness 1 3, opaque, brittle.

Extremely difficult to melt. Insoluble in water, soluble in sulfuric acid, sodium hydroxide solution. It is mainly used for smelting aluminum and making refractory materials.

Bauxite, also known as bauxite or bauxite, is mainly composed of alumina, which is hydrated alumina containing impurities and is a soil-like mineral. Such as a water bauxite, a water diaspore hall late and diaspore trihydrate. Some are composed of diaspore and kaolinite.

Some are mainly kaolinite, and with the increase of kaolinite content, they constitute general bauxite or kaolinite clay.

Aluminium smelting industry. It is used in national defense, aviation, automobiles, electrical appliances, chemicals, daily necessities, etc.

Precision casting. Bauxite clinker is processed into fine powder and made into casting molds and then precision casting. It is used in military, aerospace, communications, instrumentation, machinery and medical equipment departments.

Used in refractory products. The refractory degree of high alumina clinker is as high as 1780, with strong chemical stability and good physical properties.

Aluminum silicate refractory fiber. It has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, small heat capacity and mechanical vibration resistance. It is used in steel, non-ferrous metallurgy, electronics, petroleum, chemical industry, aerospace, atomic energy, national defense and other industries.

It is to put high-alumina clinker into a high-temperature electric arc furnace with a melting temperature of about 2000 2200, and become white after high-temperature melting, high-pressure high-speed air or steam injection, and cooling"Cotton"Aluminum silicate refractory fiber. It can be pressed into fiber blankets, boards or woven into cloth to replace refractory bricks lined with industrial high-temperature kilns such as smelting, chemical industry, and glass. Firefighters can make clothes from refractory fiber cloth.

Magnesia and bauxite clinker are used as raw materials, and appropriate binders are added to the overall barrel lining effect of pouring steel barrels.

Manufacture of bauxite cement, abrasive materials, various compounds for the ceramic industry as well as the chemical industry to make aluminum.

The non-metallic uses of bauxite are mainly used as refractory materials, abrasive materials, chemicals and raw materials for high-alumina cement. Bauxite accounts for a small proportion of non-metallic uses, but it is very versatile. For example:

In terms of chemicals, sulfate, trihydrate and aluminum chloride can be used in papermaking, water purification, ceramics and petroleum refining. Activated alumina can be used as a catalyst, catalyst carrier and physical adsorbent for decolorization, dehydration, degassing, deacidification, drying and other physical adsorbents in the chemical, oil refining and pharmaceutical industries; The aluminum chloride produced by R-Al2O3 can be used for organic synthesis applications such as dyes, rubber, medicine, and petroleum; 3% 5% Al2O3 in glass composition can improve melting point, viscosity and strength; Abrasive materials are the main raw materials for high-grade grinding wheels and polishing powders; Refractory materials are indispensable furnace materials in the industrial sector.