Tabular alumina что это
tabular alumina
1 tabular alumina
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aluminum processing — Introduction preparation of the ore for use in various products. Aluminum, or aluminium (Al), is a silvery white metal with a melting point of 660° C (1,220° F) and a density of 2.7 grams per cubic centimetre. The most abundant… … Universalium
igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary … Universalium
Australia — /aw strayl yeuh/, n. 1. a continent SE of Asia, between the Indian and the Pacific oceans. 18,438,824; 2,948,366 sq. mi. (7,636,270 sq. km). 2. Commonwealth of, a member of the Commonwealth of Nations, consisting of the federated states and… … Universalium
Graphite — For other uses, see Graphite (disambiguation). Graphite Graphite specimen General Category Native element mineral … Wikipedia
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Ruby — This article is about the mineral. For other uses, see Ruby (disambiguation). Ruby Natural ruby crystals from Winza, Tanzania General Category … Wikipedia
Phlogopite — Phlogopite, Monte Somma, Italy General Category Mica, phyllosilicates … Wikipedia
mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… … Universalium
Clinoptilolite — is a natural zeolite comprising a microporous arrangement of silica and alumina tetrahedra. It has the complex formula: (Na,K,Ca)2 3Al3(Al,Si)2Si13O36·12(H2O). It forms as white to reddish tabular monoclinic tectosilicate crystals with a Mohs… … Wikipedia
Maranhão — Estado de Maranhão Estado de Brasil … Wikipedia Español
chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… … Universalium
Tabular alumina
Tabular alumina is pur α-alumina resulting from intensive sintering at temperatures exceeding 1,800 °C, without sintering additives. Low temperature expansion and high heat resistance can be explained by the microstructure specifics: low effective porosity and large sizes of crystals with closed spherical pores resulting from intensive sintering.
Tabular alumina has exceptionally high refractory properties, mechanical strength, wear resistance, chemical purity, dielectric properties, and excellent corrosive resistance in acid and alkaline environments.
The tabular alumina manufacturing process implies performance of the quality assurance and control at each production stage. This is necessary for the production of superior-quality products. From feeding raw materials to sintering in a shaft furnace at the temperature above 1,800°C, the production process monitoring and control is provided by the skilled personnel and the automated machinery system.
Sintered tabular alumina spinel granules are subject to crushing and classification. Efficient roll crushers and vibratory screens are used for this purpose. To reduce the amount of magnetic iron to standard permissible levels (0.025%), all tabular alumina grading fractions undergo magnetic separation.
The fine grinding area has been purchased and is continuously used for the production of tabular alumina fine fractions. This area includes a highly-efficient ball mill with a separator. All surfaces of the mill and material ducts are lined with wear-resistant ceramics to reduce the amount of magnetic iron in the finished products.
Tabular alumina manufactured by Keralit OOO is used as a filling agent in critical refractory concretes. This ensures superior qualities of concretes and products made from them in most rigid and abnormal operating conditions.
Commodity nomenclature and properties of the material presented in the table below.
To purchase tabular alumina, please contact the Sales Department.
tabular alumina
1 tabular alumina
См. также в других словарях:
aluminum processing — Introduction preparation of the ore for use in various products. Aluminum, or aluminium (Al), is a silvery white metal with a melting point of 660° C (1,220° F) and a density of 2.7 grams per cubic centimetre. The most abundant… … Universalium
igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary … Universalium
Australia — /aw strayl yeuh/, n. 1. a continent SE of Asia, between the Indian and the Pacific oceans. 18,438,824; 2,948,366 sq. mi. (7,636,270 sq. km). 2. Commonwealth of, a member of the Commonwealth of Nations, consisting of the federated states and… … Universalium
Graphite — For other uses, see Graphite (disambiguation). Graphite Graphite specimen General Category Native element mineral … Wikipedia
Corundum — General Category Oxide mineral – Hematite group Chemical formula Alumi … Wikipedia
Ruby — This article is about the mineral. For other uses, see Ruby (disambiguation). Ruby Natural ruby crystals from Winza, Tanzania General Category … Wikipedia
Phlogopite — Phlogopite, Monte Somma, Italy General Category Mica, phyllosilicates … Wikipedia
mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… … Universalium
Clinoptilolite — is a natural zeolite comprising a microporous arrangement of silica and alumina tetrahedra. It has the complex formula: (Na,K,Ca)2 3Al3(Al,Si)2Si13O36·12(H2O). It forms as white to reddish tabular monoclinic tectosilicate crystals with a Mohs… … Wikipedia
Maranhão — Estado de Maranhão Estado de Brasil … Wikipedia Español
chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… … Universalium
tabular alumina
Смотреть что такое «tabular alumina» в других словарях:
aluminum processing — Introduction preparation of the ore for use in various products. Aluminum, or aluminium (Al), is a silvery white metal with a melting point of 660° C (1,220° F) and a density of 2.7 grams per cubic centimetre. The most abundant… … Universalium
igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary … Universalium
Australia — /aw strayl yeuh/, n. 1. a continent SE of Asia, between the Indian and the Pacific oceans. 18,438,824; 2,948,366 sq. mi. (7,636,270 sq. km). 2. Commonwealth of, a member of the Commonwealth of Nations, consisting of the federated states and… … Universalium
Graphite — For other uses, see Graphite (disambiguation). Graphite Graphite specimen General Category Native element mineral … Wikipedia
Corundum — General Category Oxide mineral – Hematite group Chemical formula Alumi … Wikipedia
Ruby — This article is about the mineral. For other uses, see Ruby (disambiguation). Ruby Natural ruby crystals from Winza, Tanzania General Category … Wikipedia
Phlogopite — Phlogopite, Monte Somma, Italy General Category Mica, phyllosilicates … Wikipedia
mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… … Universalium
Clinoptilolite — is a natural zeolite comprising a microporous arrangement of silica and alumina tetrahedra. It has the complex formula: (Na,K,Ca)2 3Al3(Al,Si)2Si13O36·12(H2O). It forms as white to reddish tabular monoclinic tectosilicate crystals with a Mohs… … Wikipedia
Maranhão — Estado de Maranhão Estado de Brasil … Wikipedia Español
chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… … Universalium
Tabular alumina
Scope and purpose
Tabular alumina is the preferred component for the production of high-quality molded and unformed refractories. It is used in steelmaking, foundry, cement, petrochemical, ceramic industry and waste incinerators. Other areas of widespread consumption of this material include the manufacture of electrical insulators, furnace stock, catalyst carriers. Shredded tabular alumina is the best filler for composite materials on epoxy and other types of resins, which require high dielectric strength, thermal conductivity and wear resistance.
Characteristics
This is pure α-alumina obtained by intensive sintering at temperatures above 1800 ° C, without the use of sintering additives. It is characterized by large, well-developed crystals of α-alumina up to 200 μm long, which are in the form of a hexagonal plate. Low thermal expansion and high heat resistance are explained by the features of the microstructure: low open porosity and large crystal size with closed spherical pores formed during intense sintering.
Basic indicators
Material manufactured by ALMATIS (Germany)
| Chemical composition,% | All fractions1 | -45 μm Li | -45 μm STD | -20 μm |
| Al2O3 by difference | 99.5 | 99.5 | 99.1 | 99.3 |
| Na2O | ≤0.40 | ≤0.40 | ≤0.60 | ≤0.40 |
| SiO2 | ≤0.09 | ≤0.09 | ≤0.12 | ≤0.15 |
| Magnetic | ≤0.02 | ≤0.02 | ≤0.30 | ≤0.02 |
Physical properties
Benefits
Concerning the acquisition tabular alumina and receipt of detailed advice on product properties, delivery conditions and the conclusion of the contract, please contact the managers: