Download
1 / 80
830 likes | 1.31k Vues
BORON AND BORON IN TURKEY: BORON AND BORON IN TURKEY ERTUĞRUL GÜRBÜZ University of Wroclaw 2011 - WROCLAW / POLAND/nBoron is the chemical element with atomic number 5 and the chemical symbol B. : Boron is the chemical element with atomic number 5 and the chemical symbol B ./nPowerPoint Presentation: Electron shell diagram for Boron , the 5th element in the periodic table of elements./nBoron is a metalloid element which occurs abundantly in the evaporite ores borax and ulexite. : Boron is a metalloid element which occurs abundantly in the evaporite ores borax and ulexite./nA low-abundance element in both the solar system and the Earth's crust, boron is concentrated on Earth by the water-solubility of its more common naturally-occurring compounds, the borate minerals. : A low-abundance element in both the solar system and the Earth's crust , boron is concentrated on Earth by the water-solubility of its more common naturally-occurring compounds, the borate minerals ./nThese are mined industrially as evaporate ores, such as borax and kernite.: These are mined industrially as evaporate ores , such as borax and kernite ./nElemental boron is not found naturally. : Elemental boron is not found naturally./nIndustrially, very pure isolated boron is produced with difficulty, as boron tends to form refractory materials containing small amounts of carbon or other elements.: Industrially , very pure isolated boron is produced with difficulty, as boron tends to form refractory materials containing small amounts of carbon or other elements ./nBoron is used mainly not as the element boron, but as compounds of boric oxide (B2O3) and boric acid (H3BO3). Most people have never seen elemental boron. : Boron is used mainly not as the element boron , but as compounds of boric oxide (B 2 O 3 ) and boric acid (H 3 BO 3 ). Most people have never seen elemental boron ./nBoron minerals can be used in some sectors in the industry as crude minerals. : Boron minerals can be ..
E N D
ERTUĞRUL GÜRBÜZ University of Wroclaw 2011 - WROCLAW / POLAND BORONANDBORONINTURKEY
Boron is the chemical element with atomic number 5 and the chemical symbol B.
Electron shell diagram for Boron, the 5th element in the periodic table of elements.
Boron is a metalloid elementwhich occurs abundantly in the evaporite oresborax and ulexite.
A low-abundance element in both the solar systemandthe Earth's crust, boron is concentrated on Earth by the water-solubility of its more common naturally-occurring compounds, the borate minerals.
These are mined industrially as evaporate ores, such as borax and kernite.
Industrially, very pure isolated boron is produced with difficulty, as boron tends to form refractory materials containing small amounts of carbon or other elements.
Boron is used mainly not as the element boron, but as compounds of boric oxide (B2O3)and boric acid (H3BO3).Most people have never seen elemental boron.
Boron minerals can be used in some sectors in the industry as crude minerals.
In general, their applications after refining and end-products are wider than crude ones.
Boron minerals, borates and compounds have a very wide range of applications.
Agriculture Essential micronutrientforall plant
Detergents andSoaps Act as pH bufferSoften the Washing waterEnhance the solubility of other ingredientsAct as a gentle but powerful bleaching agentAnti-bacterial properties eliminate micro organisms.
Ceramic Glazes and Enamel Frits Provide good fluxing propertiesProvide a good base for dissolving colouring agents.
Insulation Fibreglass Reduce the temperature at which fibres are formed.Improve the durability of the glass fibresReduce the viscositry of the molten glass.Increase the biosolubility of the glass fibres.
Timber Preservation Prevent and control the spread of bacteria.Inhibit corrosion.Act as flame retardant
Flame Retardants Enhance the performance of alumina trihydrateEffective as flame retardants
Nuclear Power Stations Absorb thermal neutronsUsed to control nuclear reactionUsed in nuclear shielding.
Cosmetics and Medicine Neutralize fatty acid.Act as emulsifiers in certain creamsGive mild antiseptic properties.
Metallurgy Used as cover fluxesDissolve and remove un wanted metal oxides as slag.
Other GlassMagnetsAutomobile airbagsPhotographyFuelsOptical fibresAdhesives
Boron is a relatively rare element in the Earth's crust, representing only 0.001%.
The worldwide commercial borate deposits are estimated at 10 million tonnes.
Turkey and theUnited States are the world's largest producersof boron.
Boron does not appear on Earth in elemental form but is found combined in borax, boric acid, colemanite, kernite, ulexiteandborates.
Economically important sources of boron are rasorite (kernite) and tincal (borax ore).
They are both found in the Mojave Desert of California, but the largest borax deposits are in Central and Western Turkeyincluding the provinces of Eskişehir, Kütahya and Balıkesir.
The Turkish borate deposits in Western Anatoliaare located in five main districts: Bigadiç, Kestelek, Sultançayır, Emet and Kirka.
