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Boron – Preparation
The sodium metaborate first obtained is by decomposing the magnesium borate solution with concentrated alkali, then crystallizing NaBO2 solution in strong alkali, allowing it to dissolve in water, increasing the concentration, and finally adjusting the acidity by adding CO2. Adjust the acidity of the sodium tetraborate solution with sulfuric to precipitate crystals of boric acids with low solubility. After heating, boric acid dehydrates to produce borontrioxide. Then, after drying, crude-boron is obtained through reducing B2O3 by magnesium or aluminium. The crude boron undergoes three different treatments: hydrochloric, sodium hydroxide and hydrogen fluoride. This results in brown amorphous, 95-98% pure boron.
By hydrogen reduction, you can make the purest monomeric form of boron. You pass a mixture of hydrogen with borontribromide through the wire. After heating the wire to 1500K by electric heat, the borontribromide will be reduced by the hydrogen at high temperatures.
You can also obtain boron by heating magnesium or aluminum powder and reducing boron dioxide.
Use of boron for industrial purposes
Boron, a chemical raw-material mineral, has a variety of uses. It is mainly utilized to make borax, boric acids, boron and other compounds. It is widely used in metallurgy as well as building materials, machinery and electrical appliances. Chemicals, light-weight wool, the nuclear sector, medicine, agriculture and other industries. Raw materials are important. Boron is used in more than 300 products. Glass, ceramics, detergents and agricultural fertilizers account for the majority of the global consumption.
Elemental Boron is used for a variety of purposes, including as a good reducing, oxidizing, brominating, and organic synthesis blending agent. Other uses include as an insulator and plasma arc and high-frequency electric arc and high-voltage, and sonic arc.
Boron The boron element is found in trace amounts of alloys, and when combined with aluminum or plastic, can be used to shield neutrons. In reactors, boron is used as an alloy control rod. Composite materials are made from boron fibre. Boron-containing additives improve sintering, which is important in the metal industry. The ore quality can reduce the melting point and reduce the expansion. It also improves strength and hardness. Boron and its derivatives are also used in the metallurgical and steel industries as raw materials for smelting of boron-iron boron steel. The addition of titanium boride or lithium boride to building materials and heat-resistant alloys can produce these compounds. Borates, borides, and other borates are essential components in enamel, ceramics, glass, and other materials. They can be used to improve the surface finish and gloss of a product.
Zinc borate may be used to create fireproof fibers. It’s a good fire retardant. It can also be used for bleaching and mordant dying. In fabric bleaching, sodium metaborate can be used. In the paper industry, boron compounds and paint desiccants can also be used.
Boron can be found as a trace in quartz. How to reduce boron to the minimum is the key in the purification process for high-purity, quartz sand. The presence of Boron reduces quartz melting point and decreases the number uses of the prepared crucible. This increases production costs of monocrystalline Silicon.
China has abundant boron-ore resources but boron-ore products cannot meet domestic construction needs. Domestic borax production was around 400,000 tons in 2007, imported boron-ore products 648.700 tons. This is a high dependence on imports.
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