HENAN TIANMA THE NEW MATERIAL SHARES CO.,LTD.

HENAN TIANMA THE NEW MATERIAL SHARES CO.,LTD.

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HENAN TIANMA THE NEW MATERIAL SHARES CO.,LTD.
  • Tel:+86-371-68942898 13938253542 13523012188
  • Fax:+86-371-68942899
  • Address:No.25, Anyang Road, Shangjie District, Zhengzhou, China
  • E-mail:zztmwfgs158@sina.com
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High Purity Aluminas

        High purity aluminas are normally classified as those with a purity of 99.99% and can be manufactured by routes starting from Bayer hydrate using successive activations and washings, or via a chloride to achieve the necessary degree of purity.  Even higher purities are manufactured by calcining ammonium aluminium sulfate or from aluminium metal.  In the case of the route via ammonium aluminium sulfate, the necessary degree of purity is obtained by successive recrystallisations.  Especially high purities can be made from aluminium by reacting the metal with an alcohol, purifying the aluminium alkoxide by distillation, hydrolysing and the calcination.  A minor route involves subjecting super purity aluminium metal pellets under distilled water to a spark discharge.
       Applications include the manufacture of synthetic gem stones such as rubies and yttrium aluminium garnets for lasers, and sapphires for instrument windows and lasers.
       High purity aluminas, produced by Tianma, has the characteristics of high purity, fine primary crytical size, remarkable activities and low conductivity.