Patents Assigned to Dead Sea Works
  • Patent number: 10988419
    Abstract: According to some demonstrative embodiments, there is provided herein a fertilizer granule including a fertilizer dust and one or more binders wherein said granule comprises a single strength of at least 2.5 kg/gran and a single strength after humidity chamber 24 hours, 79% RH of at least 0.5 kg/granule.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: April 27, 2021
    Assignee: Dead Sea Works Ltd.
    Inventors: Khalil Abu Rabeah, Ruben Socolovsky, Natalia Geinik, Ayoub Alhowashla, Joseph Lati
  • Publication number: 20160031716
    Abstract: There is provided a process for extracting Carnallite from an aqueous solution, the process comprising steps of pre-heating the solution comprising said Carnallite in a series of at least two heat exchangers, thereby obtaining a pre-heated solution; and concentrating said pre-heated solution in a series of at least two evaporation units, whereby forming a concentrated solution and hot vapors; wherein at least one of said evaporation units employs steam for indirect heating, and wherein at least one of said heat exchanger units employs the heat of said hot vapors formed in said evaporation units.
    Type: Application
    Filed: March 13, 2014
    Publication date: February 4, 2016
    Applicant: Dead Sea Works Ltd.
    Inventor: Shai RHAMIM
  • Patent number: 6458388
    Abstract: The invention provides cosmetic creams containing granular components for cleansing and scrubbing the skin, which contain granules of a salt, in particular sodium or potassium chloride, and which are stable under storage and use conditions. In an embodiment of the invention, no rinsing is required after use. The invention also provides a process for making the cosmetic creams by mixing a solution of a salt, in the amount contained by a solution that is saturated at a temperature not lower than room temperature, with the water soluble ingredients of the cream base, emulsifying the mixture with the components of the oily phase of the cream base to obtain a complete mixture, homogenizing and cooling the complete mixture, adding fragrances and preservatives and optionally additives, and finally adding solid salt particles while continuing to homogenize said mixture.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: October 1, 2002
    Assignee: Dead Sea Works, Ltd.
    Inventors: Margarita Genis, Izhak Haliva, Shaul Zolotov
  • Patent number: 6143271
    Abstract: The present invention provides a process for producing potassium sulfate from a potash and a sodium sulfate source, comprising the steps of: (a) treating a portion of the potash source and sodium sulfate source, such that glaserite is crystallized out of solution and a first mother liquor is produced; (b) converting the glaserite to precipitate potassium sulfate in a second mother liquor; (c) recycling the second mother liquor to the portion of the potash source and sodium sulfate source; (d) subjecting the first mother liquor to evaporative crystallization to produce sodium chloride in a third mother liquor; and (e) recycling the third mother liquor to the portion of the potash source and sodium sulfate source.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: November 7, 2000
    Assignee: Dead Sea Works
    Inventors: Curt Holdengraber, Shalom Lampert
  • Patent number: 6132490
    Abstract: A weightening composition for weightening a molten salt in the refinement of magnesium or magnesium alloys, characterized in that it comprises one or more bromide salts, selected from among NaBr, KBr, MgBr.sub.2 or CaBr.sub.2.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: October 17, 2000
    Assignee: Dead Sea Works Ltd.
    Inventors: Gilad Golub, Gennady Katsnelson, Menachem Zinn, Eliyahu Aghion
  • Patent number: 5853792
    Abstract: A low sodium edible salt composition comprises, based on dry weight of ingredients, 0-50% NaCl, 45-99.5% KCl and at least 0.5% additives, which comprise at least one edible nucleotide monophosphate salt and at least one member other than the nucleotide monophosphate salt selected from the group consisting of low organic acid, low organic acid salt, phosphoric acid, phosphate salt, a magnesium salt, sugar and burnt sugar. The additives have the effect of countering the bitter taste of KCl.
    Type: Grant
    Filed: February 11, 1997
    Date of Patent: December 29, 1998
    Assignee: Dead Sea Works Ltd
    Inventors: Shaul Zolotov, Oleg Braverman, Margarita Genis, David Biale
  • Patent number: 5552126
    Abstract: A process for producing potassium sulfate, sodium sulfate, and sodium chloride from potash and a sodium sulfate/water source, which includes: (a) treating the sodium sulfate/water source to produce a slurry containing anhydrous sodium sulfate; (b) concentrating the slurry to form a concentrate and a diluent; (c) treating the diluent to precipitate out anhydrous sodium sulfate; (d) subjecting the anhydrous sodium sulfate from steps (b) and/or (c) and/or from a different source to conversion with potash in an aqueous medium to yield glaserite and a first mother liquor, with any excess anhydrous sodium sulfate being taken as co-product; (e) converting the glaserite with potash and water to produce a precipitate of potassium sulfate and a second mother liquor; (f) returning the second mother liquor to step (d); (g) subjecting the first mother liquor to evaporative crystallization such that substantially pure sodium chloride is precipitated in a third mother liquor; and (h) returning the third mother liquor for co
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: September 3, 1996
    Assignee: Dead Sea Works Ltd.
    Inventors: Itzhak Efraim, Shalom Lampert, Curt Holdengraber
  • Patent number: 5549876
    Abstract: A process for the manufacture of potassium sulfate from a sodium sulfate source, potash and water, comprising the steps of: (a) introducing the sodium sulfate source, water and potash into a differential countercurrent contactor; and (b) causing the sodium sulfate source, potash and water to contact differentially to produce potassium sulfate.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: August 27, 1996
    Assignee: Dead Sea Works
    Inventors: Tuvia Zisner, Curt Holdengraber, Shalom Lampert
  • Patent number: 5529764
    Abstract: A process for producing potassium sulfate or potassium sulfate and sodium sulfate from potash and a sodium sulfate/water source, which includes: (a) subjecting a sodium sulfate source to conversion with potash in an aqueous medium to yield glaserite precipitate and a first mother liquor; (b) converting the glaserite precipitate with potash and water to produce a potassium sulfate precipitate and a second mother liquor; (c) returning the second mother liquor to step (a); (d) subjecting the first mother liquor to treatment, such as evaporative crystallization, such that a sodium chloride and sodium sulfate solids mixture or pure sodium chloride is precipitated in a third mother liquor; (e) subjecting the solids from step (d) to a sodium sulfate/water source to produce anhydrous sodium sulfate; and (f) returning the third mother liquor for conversion to potassium salts.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: June 25, 1996
    Assignee: Dead Sea Works Ltd.
    Inventors: Shalom Lampert, Curt Holdengraber
  • Patent number: 3993729
    Abstract: The present invention relates to an improved method for the manufacture of potassium phosphates. More specifically the present invention provides a process for the manufacture of monopotassium phosphate, KH.sub.2 PO.sub.4, from potassium bearing brines.
    Type: Grant
    Filed: January 16, 1974
    Date of Patent: November 23, 1976
    Assignee: Dead Sea Works Ltd.
    Inventors: Joseph Epstein, Eli Mosche Feist, Daniel Altaras