中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

81 records (took 0.027 seconds)

    PROCESS FOR UPGRADING TITANIFEROUS MATERIALS
    41.
    发明专利
    PROCESS FOR UPGRADING TITANIFEROUS MATERIALS 未知

    公开(公告)号：CA2162266A1

    公开(公告)日：1994-11-24

    申请号：CA2162266

    申请日：1994-05-09

    Applicant: TECH RESOURCES PTY LTD

    Inventor： HOLLITT MICHAEL JOHN ,  MCCLELLAND ROSS ALEXANDER

    IPC: C22B34/12 ,  C22B3/06 ,  C22B3/12 ,  C22B5/12 ,  C09C1/36

    Abstract: A process for removing impurities from a titaniferous material that has been subjected to thermal reduction is disclosed. The process comprises the steps of: (i) subjecting the thermally reduced titaniferous material to a secondary heat treatment to convert it to a leachable form in which impurities present therein are more readily leachable; (ii) cooling the product of step (i); (iii) leaching the cooled heat treated titaniferous material in an aqueous acid solution that is capable of dissolving at least a portion of any impurities contained in the titaniferous material to form a leachate; and (iv) separating the leachate from the titaniferous material.

    Leaching ores
    42.
    发明专利
    Leaching ores 未知

    公开(公告)号：AU2008267769B2

    公开(公告)日：2012-05-31

    申请号：AU2008267769

    申请日：2008-06-26

    Applicant: TECH RESOURCES PTY LTD

    Inventor： HOLLITT MICHAEL JOHN ,  SHAW RAYMOND WALTER ,  REES KEVIN LEE

    IPC: C22B3/08 ,  C22B3/02 ,  C22B15/00

    Abstract: A process for leaching an ore containing sulphidic copper-containing minerals is disclosed. The process includes carrying out an aerated oxidising leach of a part of the ore and causing reactions with a source of iron such as pyrite in the ore and producing an acidic leach liquor containing ferrous ions, ferric ions, and copper ions in solution. The process also includes carrying out a leach of another part of the ore using the leach liquor produced in step (a) under conditions that minimise reactions with a source of iron such as pyrite in the ore and producing a leach liquor containing copper ions in solution.

    Leaching ores
    43.
    发明专利
    Leaching ores 未知

    公开(公告)号：AU2008267769A1

    公开(公告)日：2008-12-31

    申请号：AU2008267769

    申请日：2008-06-26

    Applicant: TECH RESOURCES PTY LTD

    Inventor： HOLLITT MICHAEL JOHN ,  SHAW RAYMOND WALTER ,  REES KEVIN LEE

    IPC: C22B3/08 ,  C22B3/02 ,  C22B15/00

    Abstract: A process for leaching an ore containing sulfidic copper-containing minerals includes carrying out an aerated oxidizing leach of a part of the ore and producing an acidic leach liquor containing ferrous ions, ferric ions, and copper ions in solution. The process also includes carrying out a leach of another part of the ore using the leach liquor under conditions that minimize reactions with a source of iron in the ore and producing a leach liquor containing copper ions in solution. The process further includes recovering copper from the leach liquor.

    45.
    发明专利
    未知

    公开(公告)号：NO311367B1

    公开(公告)日：2001-11-19

    申请号：NO954419

    申请日：1995-11-03

    Applicant: TECH RESOURCES PTY LTD

    Inventor： HOLLITT MICHAEL JOHN ,  MCCLELLAN ROSS ALEXANDER

    IPC: C22B34/12 ,  C22B3/06 ,  C22B3/08 ,  C22B3/10 ,  C22B3/12 ,  C22B5/12

    Abstract: PCT No. PCT/AU94/00241 Sec. 371 Date Apr. 1, 1996 Sec. 102(e) Date Apr. 1, 1996 PCT Filed May 9, 1994 PCT Pub. No. WO94/26944 PCT Pub. Date Nov. 24, 1994A process for removing impurities from a titaniferous material that has been subjected to thermal reduction and which includes a titaniferous phase of general formula M3O5. The thermally reduced titaniferous material is subjected to a secondary heat treatment to covert the M3O5 phase to a more readily leachable M2O3 phase. This material is then cooled and leached in an aqueous acid solution containing hydrochloric acid or sulfuric acid, and the leachate is separated from the titaniferous material to form a purified titaniferous material.

    A process for alkaline leaching of a titaniferous material
    46.
    发明专利
    A process for alkaline leaching of a titaniferous material 未知

    公开(公告)号：IN182752B

    公开(公告)日：1999-07-10

    申请号：IN404CA1995

    申请日：1995-04-17

    Applicant: TECH RESOURCES PTY LTD

    Inventor： HOLLITT MICHAEL JOHN

    IPC: C01G23/04 ,  C22B3/04 ,  C22B3/14 ,  C22B34/12 ,  C01G23/00

    Abstract: PCT No. PCT/AU95/00213 Sec. 371 Date Jan. 6, 1997 Sec. 102(e) Date Jan. 6, 1997 PCT Filed Apr. 13, 1995 PCT Pub. No. WO95/28503 PCT Pub. Date Oct. 26, 1995A process for alkaline leaching of a titaniferous material containing silica and alumina impurities in which spent leachant is recycled by treating to remove the silica and alumina impurities therefrom, by heating, maintaining the leachant at leaching temperature, or treating with an additive. The removal of the silica and alumina impurities by the method of the invention enables further use of the leachant.

Patent Agency Ranking