Inorganic fiber composition

  • US 5,332,699 A
  • Filed: 04/23/1993
  • Issued: 07/26/1994
  • Est. Priority Date: 02/20/1986
  • Status: Expired due to Term
First Claim
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1. A process for decomposing a silica-containing fiber comprising the steps of:

  • 1. providing an inorganic fiber prepared from a composition consisting essentially of;

    (a) 0-6 wt % of Al2 O3 ;

    (b) 50-70 wt % SiO2 ;

    (c) 0-30 wt % MgO; and

    (d) the remainder consisting essentially of CaO, the total being 100% by weight;

    2. subjecting the silica-containing fiber to a physiological saline fluid; and

    3. extracting the silica at a rate of at least 5 parts per million (ppm) of silicon in 5 hours, thereby decomposing the silica-containing fiber.

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