Patents Assigned to NETZSCH Trockenmahltechnik GmbH
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Patent number: 11942625Abstract: A method for producing a homogenized mixture of carbon, sulfur, and PTFE, wherein the sulfur is liquefied, and the liquid sulfur is then ground for the first time together with the carbon, so that the liquid sulfur is absorbed by the pores of the carbon particles and forms a preferably powdery composite with the carbon particles, whereupon PTFE is added and the mixture of the composite and the PTFE is then ground a second time and is thus homogenized.Type: GrantFiled: November 16, 2021Date of Patent: March 26, 2024Assignee: NETZSCH Trockenmahltechnik GmbHInventors: Frank Winter, Regina Dambach
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Patent number: 11745221Abstract: An operating method for a separator for classifying, wherein superheated steam is supplied to the separator as separating gas, and wherein the temperature of the superheated steam as separating gas is selected to be so low that in particular no condensation of the superheated steam occurs in the separator. Further, a separator for classifying, wherein the separator includes a separating gas supply including a water infeed for generating superheated steam as separating gas, and wherein adjusting or regulating means for the temperature of the superheated steam are provided as separating gas and are designed in such a way that the temperature of the superheated steam as separating gas is adjusted to be so low that in particular no condensation of the superheated steam occurs in the separator.Type: GrantFiled: October 22, 2021Date of Patent: September 5, 2023Assignee: NETZSCH Trockenmahltechnik GmbHInventors: Frank Winter, Joachim Domes
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Patent number: 11731139Abstract: Machine having a rotor which is mounted in a cantilevered fashion on a bearing and has a rotational axis along which a free, subsequently non-mounted rotor end runs starting from the bearing, the rotor end having a rotor end side which is spaced apart from a fixed rotor opposing side by a gap, and which, during operation of the machine when the rotor is rotating, is deflected with respect to the rotational axis as a result of imbalance of the free, non-mounted rotor end, or as a result of externally applied forces, wherein the rotor end side is curved or beveled so as to drop away at least in its end region towards its edge and in a direction towards the bearing.Type: GrantFiled: December 19, 2014Date of Patent: August 22, 2023Assignee: Netzsch Trockenmahltechnik GMBHInventors: Roland Nied, Lars-Peter Weiland
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Patent number: 11701691Abstract: A device and a method for rounding a graphite material includes a feeding device for feeding the graphite material to the device; a plurality of rounding tools designed to revolve while rotating, which are arranged at the outer circumference of a disc rotating about a rotational axis and in a rotational direction; at least one guide apparatus; a separating device for separating fine material and superfine material; and a product outlet. Furthermore, provision is made such that a cover ring is arranged above the rounding tools.Type: GrantFiled: January 12, 2021Date of Patent: July 18, 2023Assignee: NETZSCH Trockenmahltechnik GmbHInventors: Hermann Sickel, Christian Höfels, Manuel Herzog
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Patent number: 11660639Abstract: A method for producing a powdered starting material, which is provided for production of rare earth magnets, including includes the following steps: pulverizing an alloy, including at least one rare earth metal, wherein a powdered intermediate product is formed from the alloy including the at least one rare earth metal, and carrying out at least one classification aimed at particle size and/or particle density for the powdered intermediate product. A fraction of the powdered intermediate product, which is formed by the at least one classification, is used for fabrication of rare earth magnets. Furthermore, at least one dynamic classifier is provided, implementing at least one classification directed at particle size and/or particle density for the powdered intermediate product and thereby separates the fraction from the powdered intermediate product, which forms the starting material for manufacturing rare earth magnets.Type: GrantFiled: July 13, 2018Date of Patent: May 30, 2023Assignee: NETZSCH Trockenmahltechnik GmbHInventors: Frank Winter, Hermann Sickel, Wilhelm Femengel
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Patent number: 11376604Abstract: A method is disclosed for crushing material to be ground with a mill which contains a grinding chamber which is connected to a feed for material to be ground and to an outlet for ground particles, and contains grinding devices for producing particles of the desired fineness from the fed material to be ground, wherein the grinding takes place in a reducing atmosphere which contains a reduction gas. Also disclosed, is a mill having a grinding chamber which is connected to a feed for material to be ground and to an outlet for ground particles, and contains grinding devices for producing particles of the desired fineness from the fed material to be ground, wherein the grinding chamber contains a reducing atmosphere in which the grinding takes place and which contains a reduction gas.Type: GrantFiled: June 14, 2016Date of Patent: July 5, 2022Assignee: NETZSCH Trockenmahltechnik GmbHInventors: Roland Nied, Hermann Sickel
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Patent number: 11311933Abstract: A method and a plant for the production of a powdery starting material, which is provided for the manufacture of rare earth magnets, are disclosed. First of all, at least one magnetic material, which is comminuted into a powdery intermediate product with a possibly increased concentration of impurities, and/or at least one alloy including rare earth metal are provided, which includes a low concentration of impurities.Type: GrantFiled: May 16, 2019Date of Patent: April 26, 2022Assignee: NETZSCH Trockenmahltechnik GmbHInventors: Frank Winter, Wilhelm Fernengel
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Patent number: 11311832Abstract: A separator for separating solid particles from a processing gas stream that has been fed repeatedly through a work machine, wherein the separator includes a processing gas inlet through which particle-laden processing gas emitted from the work machine is fed into the separator, and a filterless separator element to reduce the particle content of the processing gas and a processing gas outlet to discharge the processing gas with its reduced particle content to the work machine, the separator including a secondary stream filter, which filters a smaller portion of the processing gas, and a secondary outlet, connected thereto, which ejects the filtered secondary stream of processing gas.Type: GrantFiled: June 25, 2020Date of Patent: April 26, 2022Assignee: NETZSCH Trockenmahltechnik GmbHInventor: Frank Winter
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Patent number: 11309127Abstract: A method and a plant for the production of a powdery material, which is provided for the manufacture of rare earth magnets. First of all, at least one magnetic or magnetizable raw material, respectively, is provided and is comminuted into a powdery intermediate product, which includes powder particles including corners and edges, by means of conventional comminuting methods. The sharp-edged powder particles are chamfered subsequently. The optimized powdery product including the chamfered powder particles is used for the manufacture of rare earth magnets.Type: GrantFiled: May 14, 2019Date of Patent: April 19, 2022Assignee: NETZSCH Trockenmahltechnik GmbHInventors: Frank Winter, Wilhelm Fernengel
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Publication number: 20190358703Abstract: A method and a plant for the production of a powdery starting material, which is provided for the manufacture of rare earth magnets, are disclosed. First of all, at least one magnetic material, which is comminuted into a powdery intermediate product with a possibly increased concentration of impurities, and/or at least one alloy including rare earth metal are provided, which includes a low concentration of impurities.Type: ApplicationFiled: May 16, 2019Publication date: November 28, 2019Applicant: NETZSCH Trockenmahltechnik GmbHInventors: Frank Winter, Wilhelm Fernengel
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Patent number: 10451270Abstract: A method and a device for generating superheated steam from a working medium, which includes the following steps: feeding of a working medium in the liquid phase to a specific heating tube and temperature regulation of the specific heating tube. Furthermore, the specific heating tube is temperature-regulated with a defined amount of thermal energy, as a result of which superheated steam is formed in the specific heating tube from the working medium fed in the liquid phase, the superheated steam then departing from the specific heating tube.Type: GrantFiled: February 16, 2017Date of Patent: October 22, 2019Assignee: NETZSCH Trockenmahltechnik GmbHInventors: Frank Winter, Thorsten Uhl
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Patent number: 10434517Abstract: A method for jet milling of damp or wet grist in a jet mill, such that at least one of the operating parameters is appropriately selected so that a combined drying and milling process occurs in which, to obtain an end product with predetermined degree of fineness and moisture content. The specific operating mechanism required for milling is selected so that it is greater than or equal to the specific drying requirement, and the end product is released from the jet mill with the predetermined fineness and moisture content. In addition, the invention relates to a jet mill to perform this method, such that adjusting, controlling or regulating devices are foreseen for adjusting, controlling or regulating at least one of the operating parameters.Type: GrantFiled: January 14, 2014Date of Patent: October 8, 2019Assignees: NETZSCH Trockenmahltechnik GmbHInventors: Roland Nied, Hermann Sickel
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Patent number: 9505008Abstract: A method for dry operation of an agitator bead mill, with a mill housing that includes a grinding chamber, in which a rotatable agitator shaft extends horizontally between an input side and an output side and in which grinding media are situated. An output gas is fed into the grinding chamber on the output side, goes together with ground grist through the separation system radially with respect to the transport direction, and thus leaves the grinding chamber together with ground grist through the separation system and onward through the product output. Also disclosed is an agitator bead mill for executing the method, such that the separation system has a static sieve with a free perforated surface that is chosen in such a way that the pass-through speed of the gas leaving the agitator mill through the separation system and the product outlet amounts approximately to 10 m/s to 30 m/s.Type: GrantFiled: December 17, 2014Date of Patent: November 29, 2016Assignees: NETZSCH Trockenmahltechnik GmbHInventors: Roland Nied, Hermann Sickel, Udo Enderle
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Publication number: 20150174583Abstract: An operating method for a grinding body mill having a housing which surrounds a grinding chamber in which grinding bodies are arranged and, during normal operation, are set in motion for the purpose of grinding a grinding stock to be ground, which housing includes a product inlet and a product outlet, between which the grinding stock to be ground flows through the moving grinding bodies, wherein, by means of a separating device positioned upstream of the product outlet, grinding bodies are prevented from exiting the grinding chamber into the product outlet during normal operation of the grinding body mill, and wherein furthermore, grinding bodies that have passed through the separating device and onward through the product outlet pass into an upwardly inclined discharge pipe from where, when the grinding body mill is at a standstill, the grinding bodies are directed out of the discharge pipe through the product outlet into a rotor body of the separating device and, when operation of the grinding body mill isType: ApplicationFiled: December 19, 2014Publication date: June 25, 2015Applicant: Netzsch Trockenmahltechnik GmbHInventors: Roland Nied, Lars-Peter Weiland
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Publication number: 20150174585Abstract: Machine having a rotor which is mounted in a cantilevered fashion on a bearing and has a rotational axis along which a free, subsequently non-mounted rotor end runs starting from the bearing, the rotor end having a rotor end side which is spaced apart from a fixed rotor opposing side by a gap, and which, during operation of the machine when the rotor is rotating, is deflected with respect to the rotational axis as a result of imbalance of the free, non-mounted rotor end, or as a result of externally applied forces, wherein the rotor end side is curved or beveled so as to drop away at least in its end region towards its edge and in a direction towards the bearing.Type: ApplicationFiled: December 19, 2014Publication date: June 25, 2015Applicant: NETZSCH TROCKENMAHLTECHNIK GMBHInventors: Roland Nied, Lars-Peter Weiland
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Patent number: 9010666Abstract: A method for the operation of a jet mill with an integrated dynamic air classifier, wherein particles are fed as grinding stock into a grinding chamber of the jet mill and are ground there into ultra-fine particles by grinding, in that superheated steam or technical gases is/are used as working stock, wherein at least one surface-active additive is fed to the grinding stock for stabilization of the generated ultra-fine particles. A jet mill for performing this method, having an integrated dynamic air classifier, and a grinding chamber into which superheated steam or technical gases are provided as working stock via working stock feed devices as grinding stock and in which the grinding stock is ground into ultra-fine particles by grinding, and wherein feeding devices for at least one surface-active additive for stabilization of the generated ultra-fine particles are provided.Type: GrantFiled: May 25, 2012Date of Patent: April 21, 2015Assignees: NETZSCH Trockenmahltechnik GmbHInventors: Roland Nied, Hermann Sickel, Dimitrios Makrakis