Patents Assigned to Mineral Process Licensing Corporation
  • Patent number: 4244929
    Abstract: The invention relates to the recovery of chlorine values as ferric chloride from iron chloride dust which is obtained as a by-product from the chlorination of a titaniferous material containing more than 5% by weight iron oxide, such as ilmenite. The method comprises heating the iron chloride dust to a temperature above 275.degree. C. in the presence of chlorine and iron oxide and recovering the ferric chloride volatilized from the iron chloride dust together with the ferric chloride obtained from ferrous chloride present in the iron chloride dust by reaction with the chlorine and ferric chloride obtained from other metal chloride contaminants by reaction with the iron oxide.
    Type: Grant
    Filed: May 15, 1979
    Date of Patent: January 13, 1981
    Assignee: Mineral Process Licensing Corporation BV
    Inventors: John Lumsden, Charles E. E. Shackleton
  • Patent number: 4242320
    Abstract: The invention relates to a method for the reduction of ferric chloride to produce ferrous chloride. The method comprises using gaseous sulphur or a gaseous sulphur chloride in which the atomic ratio of sulphur to chlorine is more than 1:1 as the reducing agent. The reaction is conveniently performed in a fluidised bed. According to a particular aspect, the ferric chloride reduction forms part of a process for the recovery of chlorine values from iron chloride by-produced by industrial processes such as the chlorination of a titaniferrous or aluminous material.
    Type: Grant
    Filed: May 10, 1979
    Date of Patent: December 30, 1980
    Assignee: Mineral Process Licensing Corporation
    Inventor: John A. Clarke
  • Patent number: 4241038
    Abstract: The invention relates to a method for the reduction of ferric chloride to produce ferrous chloride. The method involves using as the reducing agent sulphur monochloride optionally in combination with sulphur or sulphur dichloride to produce ferrous chloride and sulphur dichloride. The sulphur monochloride may be introduced as a gas or as a liquid and the reaction is conveniently performed in a fluidized bed. According to a particular aspect, the ferric chloride reduction forms part of a process for the recovery of chlorine values from iron chloride by-produced by industrial processes such as the chlorination of a titaniferous or aluminous material.
    Type: Grant
    Filed: May 10, 1979
    Date of Patent: December 23, 1980
    Assignee: Mineral Process Licensing Corporation BV
    Inventors: Philip J. Gabb, Hayden Monk, John Lumsden
  • Patent number: 4179489
    Abstract: A process for the chlorination of a material containing iron and titanium chemically combined with oxygen, comprising feeding the material to be chlorinated, in particulate solid form, into a reaction bed of solids containing ferrous chloride, and reacting it within that bed, at a temperature below the melting point of ferrous chloride, with a controlled amount of chlorine in the presence of sulphur in free or combined form, to produce solid ferrous chloride, titanium chloride, which is volatile at a temperature of operation, and sulphur dioxide, as the principal products of the process.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: December 18, 1979
    Assignee: Mineral Process Licensing Corporation B.V.
    Inventor: John Lumsden
  • Patent number: 4140746
    Abstract: The invention relates to the recovery of chlorine values from iron chloride by-produced from the chlorination of a titaniferous material containing more than 5% by weight iron oxide, and particularly from the carbo-chlorination of ilmenite, which, for example, can be the first stage in the so-called chloride route to form titanium dioxide pigment.The iron chloride which may be ferric chloride or ferrous chloride is subjected to a combination of reduction and oxidation reactions. In the reduction reaction, ferric chloride is dechlorinated to ferrous chloride by a reducing agent suitable for producing a chloride compound for recycle to the chlorination process or for sale and in the oxidation reaction ferrous chloride is oxidized to ferric oxide and ferric chloride, the ferric chloride being recycled to the reduction reaction.
    Type: Grant
    Filed: November 3, 1977
    Date of Patent: February 20, 1979
    Assignee: Mineral Process Licensing Corporation B.V.
    Inventors: John H. W. Turner, Charles E. E. Shackleton