Patents by Inventor Ludger Waldmann
Ludger Waldmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11814298Abstract: A method for producing potassium chloride granular materials from a crystalline potassium chloride raw material, wherein, before the granulation process, the potassium chloride raw material is treated with at least one alkali metal carbonate and at least one metaphosphate additive in the presence of water.Type: GrantFiled: August 22, 2017Date of Patent: November 14, 2023Assignee: K+S AKTIENGESELLSCHAFTInventors: Guido Baucke, Armin Dietrich, Stefan Dressel, Sebastian Kopf, Paul Meissner, Wolfgang Walczyk, Ludger Waldmann
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Patent number: 11814297Abstract: A method for producing potassium chloride granular materials from a crystalline potassium chloride raw material, wherein, before the granulation process, the potassium chloride raw material is treated with at least one alkali metal carbonate and at least one hydrogen phosphate additive in the presence of water. The alkali metal carbonate is anhydrous sodium carbonate, sodium carbonate monohydrate or sodium carbonate decahydrate.Type: GrantFiled: August 22, 2017Date of Patent: November 14, 2023Assignee: K+S AktiengesellschaftInventors: Guido Baucke, Armin Dietrich, Stefan Dressel, Sebastian Kopf, Paul Meissner, Wolfgang Walczyk, Ludger Waldmann
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Patent number: 11795060Abstract: A method for producing potassium chloride granulates from a crystalline potassium chloride raw material. The potassium chloride raw material is treated, prior to granulation, with at least one alkali metal carbonate and at least one phosphate additive selected from alkali metal monophosphates, alkali metal pyrophosphates, linear alkali metal polyphosphates and mixtures thereof, in the presence of water.Type: GrantFiled: August 22, 2017Date of Patent: October 24, 2023Assignee: K+S AktiengesellschaftInventors: Guido Baucke, Armin Dietrich, Stefan Dressel, Sebastian Kopf, Paul Meissner, Wolfgang Walczyk, Ludger Waldmann
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Publication number: 20220402766Abstract: The invention relates to a method for producing sulphur-containing potash granules from fine-particle, potassium-chloride-containing raw materials and elementary sulphur, and to the sulphur-containing potash granules obtained with this method. The method comprises the following steps a) and b): a) mixing a potassium-chloride-containing, fine-particle raw material with a sulphur melt in a quantity of 2 to 30 wt. %, in particular 3 to 25 wt. %, preferably 5 to 23 wt. % and particularly preferably 8 to 20 wt. % in relation to the total amount of sulphur melt and fine-particle raw material, producing a mixture of fine-particle raw material and molten sulphur; and b) compacting the mixture of fine-particle raw material and molten sulphur obtained in step a).Type: ApplicationFiled: October 28, 2020Publication date: December 22, 2022Inventors: Stefan ALTHOFF, Guido BAUCKE, Andreas BLECKMANN, Armin DIETRICH, Stefan DRESSEL, Ludger WALDMANN
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Publication number: 20220324764Abstract: Disclosed is a spherical fertiliser granulate, which contains magnesium, sulphate and urea, each with respect to the total weight of the granulate, in the following quantities: Urea, calculated as elemental nitrogen, in a quantity of 20.0 to 38.0 wt %, magnesium, calculated as elemental magnesium, in a quantity of 1.5 to 9.5 wt % and sulphate, calculated as elemental sulphur, in a quantity of 2.7 to 12.0 wt %, wherein at least a portion of the magnesium, the urea and the sulphate is present in the form of at least one of the crystalline phases of the formulae MgSO4*6 NH2—C(?O)—NH2*0.5 H2O (I) and MgSO4*4 NH2—C(?O)—NH2*H2O (II), wherein 1 to 20 wt %, in particular 3 to 18 wt % and especially 5 to 15 wt % of the magnesium contained in the fertilizer granulate, calculated in each case as elemental magnesium, is present in the form of water-insoluble magnesium salts.Type: ApplicationFiled: June 30, 2020Publication date: October 13, 2022Inventors: Guido BAUCKE, LieYing DENG, Armin DIETRICH, Stefan DRESSEL, Chuanfeng FU, Yanliang GUO, David SCHERR, Stefan THENERT, Ludger WALDMANN, Josef WIEBEL
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Publication number: 20210387924Abstract: Magnesium sulfate granulates, having a dry loss of less than 2 wt. % determined by drying the granulate for 2 hours at 105° C. and 1 bar, are used for the production of solid urea-containing fertilizer compositions and to the thus produced fertilizer compositions.Type: ApplicationFiled: March 7, 2018Publication date: December 16, 2021Applicant: K+S AktiengesellschaftInventors: Guido BAUCKE, Armin Dietrich, David Scherr, Ludger Waldmann
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Publication number: 20210070621Abstract: A method is useful for reducing the caking tendency of potassium chloride during storage thereof, wherein caking of the potassium chloride grains is induced in the potassium chloride, the caked potassium chloride is passed to grinding, and the ground potassium chloride is subsequently put into storage.Type: ApplicationFiled: August 14, 2018Publication date: March 11, 2021Applicant: K+S AktiengesellschaftInventors: Holger Hoppe, Markus Burisch, Guido Baucke, Ludger Waldmann
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Publication number: 20200261872Abstract: A method is useful for triboelectrically charging chemically conditioned bulk salt mixtures by mechanically moving the bulk salt mixture in a container by at least one vertical mixer.Type: ApplicationFiled: October 11, 2018Publication date: August 20, 2020Applicant: K+S AktiengesellschaftInventors: Roland Scharfenberg, Heiko Nuhn, Uwe Wachsmuth, Ludger Waldmann
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Patent number: 10723632Abstract: Magnesium sulfate granulates contain at least 90 wt. % synthetic magnesium sulphate hydrate with respect to the total mass of the magnesium sulphate granulate, and have a dry loss of less than 2 wt. % determined by drying of the granulate for 2 hours at 105° C. and 1 bar. Further, a method is used for producing said magnesium sulfate granulates and to their use in urea-containing fertilizer compositions.Type: GrantFiled: March 7, 2018Date of Patent: July 28, 2020Assignee: K+S AktiengesellschaftInventors: Guido Baucke, Armin Dietrich, David Scherr, Ludger Waldmann
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Publication number: 20200039832Abstract: Magnesium sulfate granulates contain at least 90 wt. % synthetic magnesium sulphate hydrate with respect to the total mass of the magnesium sulphate granulate, and have a dry loss of less than 2 wt. % determined by diving of the granulate for 2 hours at 105° C. and 1 bar. Further, a method is used for producing said magnesium sulfate granulates and to their use in urea-containing fertilizer compositions.Type: ApplicationFiled: March 7, 2018Publication date: February 6, 2020Applicant: K+S AktiengesellschaftInventors: Guido Baucke, Armin Dietrich, David Scherr, Ludger Waldmann
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Publication number: 20200017363Abstract: A method for producing potassium chloride granulates from a crystalline potassium chloride raw material. The potassium chloride raw material is treated, prior to granulation, with at least one alkali metal carbonate and at least one phosphate additive selected from alkali metal monophosphates, alkali metal pyrophosphates, linear alkali metal polyphosphates and mixtures thereof, in the presence of water.Type: ApplicationFiled: August 22, 2017Publication date: January 16, 2020Applicant: K+S AktiengesellschaftInventors: Guido BAUCKE, Armin DIETRICH, Stefan DRESSEL, Sebastian KOPF, Paul MEISSNER, Wolfgang WALCZYK, Ludger WALDMANN
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Publication number: 20200017362Abstract: A method for producing potassium chloride granular materials from a crystalline potassium chloride raw material, wherein, before the granulation process, the potassium chloride raw material is treated with at least one alkali metal carbonate and at least one metaphosphate additive in the presence of waterType: ApplicationFiled: August 22, 2017Publication date: January 16, 2020Applicant: K+S AKTIENGESELLSCHAFTInventors: Guido BAUCKE, Armin DIETRICH, Stefan DRESSEL, Sebastian KOPF, Paul MEISSNER, Wolfgang WALCZYK, Ludger WALDMANN
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Publication number: 20200017417Abstract: A method for producing potassium chloride granular materials from a crystalline potassium chloride raw material, wherein, before the granulation process, the potassium chloride raw material is treated with at least one alkali metal carbonate and at least one hydrogen phosphate additive in the presence of water. The alkali metal carbonate is anhydrous sodium carbonate, sodium carbonate monohydrate or sodium carbonate decahydrate.Type: ApplicationFiled: August 22, 2017Publication date: January 16, 2020Applicant: K+S AktiengesellschaftInventors: Guido BAUCKE, Armin DIETRICH, Stefan DRESSEL, Sebastian KOPF, Paul MEISSNER, Wolfgang WALCZYK, Ludger WALDMANN
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Patent number: 10487018Abstract: The invention relates to a method for producing sulphate of potash granulates, wherein 0.1 to 7.5 wt % of a sodium salt selected from among sodium chloride, sodium sulphate, sodium sulphate hydrates, sodium hydroxide and mixtures thereof are added to the sulphate of potash during the granulation process, the percentage by weight being in relation to the sulphate of potash used. In addition, 0.1 to 2.5 wt % of water are added prior to or during the granulation process. The invention also relates to the granulates obtained by said method as well as the use of sodium salts and glaserite and mixtures thereof for improving the mechanical properties of sulfate of potash granulates. The sulphate of potash granulates produced by the method of the invention have significantly greater bursting strength and significantly greater abrasion resistance than granulates known from the prior art.Type: GrantFiled: September 30, 2015Date of Patent: November 26, 2019Assignee: K+S Kali GmbHInventors: Guido Baucke, Marcel Mueller-Goldkuhle, Armin Dietrich, Torsten Rest, Roland Keidel, Ludger Waldmann
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Patent number: 9994491Abstract: The present invention relates to compositions containing at least 80% by weight, especially at least 90% by weight, based on the total weight of the composition, of at least one magnesium sulfate-urea compound selected from the compound of the formula (I) and mixtures of the compound of the formula (I) with the compound of the formula (II): [MgSO4.mCO(NH2)2.nH2O] (I), [MgSO4.xCO(NH2)2.yH2O] (II), in which m and x are each in the range from 0.9 to 1.1, n is in the range from 1.9 to 2.1 and y is in the range from 2.9 to 3.1, where the compositions, based on the total weight of the composition, contain less than 10% by weight of free MgSO4 in the form of the anhydrate or in the form of hydrates of magnesium sulfate and less than 10% by weight of unbound urea. The invention also relates to the production of the compositions and to the use thereof as fertilizers or fertilizer additive.Type: GrantFiled: December 20, 2013Date of Patent: June 12, 2018Assignee: K+S AKTIENGESELLSCHAFTInventors: Armin Dietrich, Guido Baucke, Stefan Thenert, Ulrich Kleine-Kleffmann, Wolfgang Walczyk, Stefan Dressel, Ludger Waldmann
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Publication number: 20170225960Abstract: The invention relates to a method for producing sulphate of potash granulates, wherein 0.1 to 7.5 wt % of a potassium chloride are added to the sulphate of potash during the granulation process, the percentage by weight being in relation to the sulphate of potash used. In addition, 0.1 to 2.5 wt % of water are added prior to or during the granulation process. The invention also relates to the granulates obtained by said method as well as the use of potassium chloride for improving the mechanical properties of sulfate of potash granulates. The sulphate of potash granulates produced by the method of the invention have significantly greater bursting strength and significantly greater abrasion resistance than granulates known from the prior art.Type: ApplicationFiled: September 30, 2015Publication date: August 10, 2017Applicant: K+S Kali GmbHInventors: Guido BAUCKE, Marcel MUELLER-GOLDKUHLE, Armin DIETRICH, Torsten REST, Roland KEIDEL, Ludger WALDMANN
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Publication number: 20170217849Abstract: The invention relates to a method for producing sulphate of potash granulates, wherein 0.1 to 7.5 wt % of a sodium salt selected from among sodium chloride, sodium sulphate, sodium sulphate hydrates, sodium hydroxide and mixtures thereof are added to the sulphate of potash during the granulation process, the percentage by weight being in relation to the sulphate of potash used. In addition, 0.1 to 2.5 wt % of water are added prior to or during the granulation process. The invention also relates to the granulates obtained by said method as well as the use of sodium salts and glaserite and mixtures thereof for improving the mechanical properties of sulfate of potash granulates. The sulphate of potash granulates produced by the method of the invention have significantly greater bursting strength and significantly greater abrasion resistance than granulates known from the prior art.Type: ApplicationFiled: September 30, 2015Publication date: August 3, 2017Applicant: K+S Kali GmbHInventors: Guido BAUCKE, Marcel MUELLER-GOLDKUHLE, Armin DIETRICH, Torsten REST, Roland KEIDEL, Ludger WALDMANN
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Publication number: 20160046534Abstract: The present invention relates to compositions containing at least 80% by weight, especially at least 90% by weight, based on the total weight of the composition, of at least one magnesium sulfate-urea compound selected from the compound of the formula (I) and mixtures of the compound of the formula (I) with the compound of the formula (II): [MgSO4.mCO(NH2)2.nH2O] (I), [MgSO4.xCO(NH2)2.yH2O] (II), in which m and x are each in the range from 0.9 to 1.1, n is in the range from 1.9 to 2.1 and y is in the range from 2.9 to 3.1, where the compositions, based on the total weight of the composition, contain less than 10% by weight of free MgSO4 in the form of the anhydrate or in the form of hydrates of magnesium sulfate and less than 10% by weight of unbound urea. The invention also relates to the production of the compositions and to the use thereof as fertilizers or fertilizer additive.Type: ApplicationFiled: December 20, 2013Publication date: February 18, 2016Applicant: K+S AktiengesellschaftInventors: Armin DIETRICH, Guido BAUCKE, Stefan THENERT, Ulrich KLEINE-KLEFFMANN, Wolfgang WALCZYK, Stefan DRESSEL, Ludger WALDMANN
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Patent number: 6379414Abstract: A process is for the production of potash fertilizer granulates which have a stable shelf life also at high relative air humidities. This granulate contains an additive in the form of magnesium oxide and/or calcium oxide in a fine powder form, which is added by metering in prior to the compacting step. The result is a high final bursting strength even if the granulate is stored in a wet climate.Type: GrantFiled: April 27, 2000Date of Patent: April 30, 2002Assignee: Kali und Salz GmbHInventors: Ulrich Kleine-Kleffmann, Ludger Waldmann, Frank Wolf