Patents by Inventor Mustafa Boybay

Mustafa Boybay has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for preparing cryolite from fly ash
    Patent number: 4362703
    Abstract: Cryolite (Na.sub.3 AlF.sub.6) as a source of aluminum is prepared from coal fly ash by reacting the aluminum oxide (Al.sub.2 O.sub.3) in fly ash with phosphoric acid to form aluminum phosphate, which is then converted to sodium aluminate by reaction with sodium hydroxide, and the sodium aluminate is converted to cryolite by reaction with hydrofluoric acid (HF), or equivalent reagent providing H.sup.+ and F.sup.- ions. Aluminum is thereby obtained from fly ash in a preferred form (as cryolite) for use in producing metallic aluminum.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: December 7, 1982
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Mustafa Boybay, Turgut Demirel
  • Process of producing hydraulic cement from fly ash
    Patent number: 4328037
    Abstract: A hydraulic cement is prepared by reacting coal fly ash with concentrated phosphoric acid, and crushing or grinding the resulting mixture to granules or a fine powder. The reacted fly ash may be heated to reduce the water of hydration before final crushing or grinding. The resulting hydraulic cement may be mixed with sand and/or gravel aggregate to prepare mortar or concrete mixes for applications similar to Portland cement, or the fly ash cement may be mixed with soils to stabilize them.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: May 4, 1982
    Assignee: Iowa State University Research Foundation Inc.
    Inventors: Turgut Demirel, Dah-Yinn Lee, Mustafa Boybay