Patents Assigned to Stablex AG
  • Detoxification
    Patent number: 4116705
    Abstract: A process which comprises treating hazardous waste with an aluminium silicate or aluminosilicate and with a Portland cement in the presence of water to form a slurry and allowing the slurry to set into rock and a crystal matrix having encapsulated therein a hazardous waste and having a permeability of less than 1 .times. 10.sup.-4 cm. sec.sup.-1 and a compressive strength 28 days after preparation of 100 to 1000 psi.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: September 26, 1978
    Assignee: Stablex AG
    Inventor: Christopher Lee Chappell