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  • [发明专利]FR19750033416 _ FISONS LTD 1975年10月31日
    An absorbent substrate is treated with a finely-divided material and then with a liq. with adhesive properties. The finely-divided material is firmly bonded to the substrate. Only a small amt. of liq. carrier is used. Substrates includes pumice, perli...
  • [发明专利]DE19752526923 _ SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. 1975年06月16日
  • [发明专利]US19750585914 _ SHELL OIL COMPANY 1975年06月11日
    The invention relates to a process for the upgrading of solid material containing bound water and free or chemically bound carbon, in particular brown coal, which process involves a heat treatment at a temperature of at least 150 DEG C and at a press...
  • [发明专利]US19750589096 _ CONTINENTAL OIL COMPANY 1975年06月23日
    Drying of moist particulate carbonaceous material is facilitated by addition of a nonaqueous solvent having a low heat of vaporization and a low boiling point, such as methanol, to the material followed by application of heat to remove both solvent an...
  • 5.
    [发明专利]CH19750009150 _ SULZER (GEBRUEDER) A 1975年07月14日
  • [发明专利]DE19752547879 _ FISONS LTD. 1975年10月25日
  • 7.
    [发明专利]DE19752526923 _ SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V., DEN HAAG (NIEDERLANDE) 1975年06月16日
  • [发明专利]SU19752144359 _ BRUSS POLT INSTITUT 1975年06月13日
  • [发明专利]AU19750082215 _ SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. 1975年06月18日
    The invention relates to a process for the upgrading of solid material containing bound water and free or chemically bound carbon, in particular brown coal, which process involves a heat treatment at a temperature of at least 150 DEG C and at a press...
  • [发明专利]CA19750227580 _ ALCAN RESEARCH AND DEVELOPMENT LIMITED 1975年05月22日
    In the production of alumina by the Bayer process from bauxite containing gibbsite and boehmite and having an iron content below 5% (calculated as Fe2O3) the extraction of boehmite in the digestion stage (which is carried out at 225-270.degree.C) is i...
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