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    1.
    发明专利
    未知

    公开(公告)号：DE69905381T2

    公开(公告)日：2003-12-18

    申请号：DE69905381

    申请日：1999-08-10

    Applicant: SOLVAY SA BRUESSEL BRUXELLES

    Inventor： NINANE LEON ,  HUMBLOT CEDRIC ,  GERARD PASCAL

    IPC: C01D3/14 ,  B01D53/68 ,  C01D3/16 ,  C01F11/46

    Abstract: Process for the production of sodium chloride crystals from a sodium chloride brine contaminated by potassium chloride and sulphate ions, according to which a calcium compound (32) is added to the brine (48) to crystallize glauberite (35), which is isolated, the resulting aqueous solution (36) is subjected to evaporation to crystallize sodium chloride (40), which is collected, and the aqueous mother liquor (41) from the crystallization of the sodium chloride is subjected to cooling (42) to crystallize glaserite (45).

    4.
    发明专利
    未知

    公开(公告)号：AT232508T

    公开(公告)日：2003-02-15

    申请号：AT99941568

    申请日：1999-08-10

    Applicant: SOLVAY

    Inventor： NINANE LEON ,  HUMBLOT CEDRIC ,  GERARD PASCAL

    IPC: C01D3/14 ,  B01D53/68 ,  C01D3/16 ,  C01F11/46

    Abstract: Process for the production of sodium chloride crystals from a sodium chloride brine contaminated by potassium chloride and sulphate ions, according to which a calcium compound (32) is added to the brine (48) to crystallize glauberite (35), which is isolated, the resulting aqueous solution (36) is subjected to evaporation to crystallize sodium chloride (40), which is collected, and the aqueous mother liquor (41) from the crystallization of the sodium chloride is subjected to cooling (42) to crystallize glaserite (45).

    5.
    发明专利
    未知

    公开(公告)号：AT225215T

    公开(公告)日：2002-10-15

    申请号：AT98904135

    申请日：1998-01-14

    Applicant: SOLVAY

    Inventor： NINANE LEON

    IPC: B09B1/00

    6.
    发明专利
    未知

    公开(公告)号：DE69802515D1

    公开(公告)日：2001-12-20

    申请号：DE69802515

    申请日：1998-04-02

    Applicant: SOLVAY

    Inventor： NINANE LEON

    IPC: C01D3/04 ,  C01D3/08 ,  C01D3/14

    Abstract: Process for enriching crude salt, in which the crude salt is ground and then cooled in a saturated aqueous sodium chloride solution, to a temperature below the anhydrous sodium chloride to sodium chloride dihydrate transition temperature, a stock of a powder comprising sodium chloride crystals is collected from the cooling step and the powder is subjected to particle-size fractionation from which a fine particle-size fraction and a coarse particle-size fraction comprising the enriched salt are collected.

    7.
    发明专利
    未知

    公开(公告)号：FR2782709B1

    公开(公告)日：2001-02-02

    申请号：FR9810751

    申请日：1998-08-26

    Applicant: SOLVAY

    Inventor： NINANE LEON ,  HUMBLOT CEDRIC ,  GERARD PASCAL

    IPC: C01D3/14 ,  B01D53/68 ,  C01D3/16 ,  C01F11/46

    Abstract: Process for the production of sodium chloride crystals from a sodium chloride brine contaminated by potassium chloride and sulphate ions, according to which a calcium compound (32) is added to the brine (48) to crystallize glauberite (35), which is isolated, the resulting aqueous solution (36) is subjected to evaporation to crystallize sodium chloride (40), which is collected, and the aqueous mother liquor (41) from the crystallization of the sodium chloride is subjected to cooling (42) to crystallize glaserite (45).

    8.
    发明专利
    未知

    公开(公告)号：DE69509132T2

    公开(公告)日：1999-11-18

    申请号：DE69509132

    申请日：1995-12-22

    Applicant: SOLVAY

    Inventor： NINANE LEON ,  CRIADO CLAUDE ,  FEYS FRANCIS

    IPC: C01D3/04 ,  C01D1/22 ,  C01F11/18

    Abstract: PCT No. PCT/EP95/05175 Sec. 371 Date Sep. 12, 1997 Sec. 102(e) Date Sep. 12, 1997 PCT Filed Dec. 22, 1995 PCT Pub. No. WO96/21620 PCT Pub. Date Jul. 18, 1996Process for the coproduction of calcium carbonate and sodium hydroxide, comprising causticizing sodium carbonate with milk of lime; separating the calcium carbonate and the sodium hydroxide formed in the causticizing stage; and carbonating a mixture of milk of lime and of the calcium carbonate resulting from the causticizing stage.

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