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公开(公告)号：EP4215597A1
公开(公告)日：2023-07-26
申请号：EP22152942.3
申请日：2022-01-24
发明人： Spahr, Michael , Kuhnt, Christopher , Claes, Joris , Denoo, Bram
摘要： The present invention is directed to a carbon precursor material characterized by a flashpoint above 290°C and a softening point between 110 and 300°C Mettler and comprising petroleum-derived pitch product derived from a petroleum-based raw material having a concentration of less than 40% by weight of asphaltenes as measured by SARA analysis. Further, the present invention is directed to the use of such carbon precursor material in binding/coating/impregnation processes in the production of graphite electrodes for electric arc furnaces used in steel/ferro-alloy/silicon production or in carbon electrodes for aluminum production and/or manufacture of graphite particles for the manufacturing of battery electrodes. The present invention is further directed to a carbon or graphite electrode comprising said pitch binder in converted state, and in particular a battery electrode. The present invention provides also a process for producing a coating and/or binding and/or impregnation carbon precursor material comprising a petroleum-derived pitch product, the process comprising the steps of providing petroleum-based raw material having a concentration of less than 40% by weight of asphaltenes measured by SARA analysis, thermally treating said petroleum-based raw material above 300°C at atmospheric pressure, and subsequently distill the thermally treated material, thereby obtaining a distillation residue being said petroleum-derived pitch product.
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公开(公告)号：EP4215481A1
公开(公告)日：2023-07-26
申请号：EP22152935.7
申请日：2022-01-24
发明人： Spahr, Michael , Kuhnt, Christopher , Claes, Joris , Denoo, Bram
摘要： A carbon precursor material is provided comprising a distillation residue from a distillate, said distillate being a distillate fraction of coal tar and/or petroleum-based raw material, or of coal tar-based and/or petroleum-based pitch, wherein the distillation residue has a softening point between 70 and 120°C Mettler. Further, the present invention provides the use of the carbon precursor material as a binder and/or impregnation material in the manufacturing of graphite electrodes for electric arc furnaces and carbon anodes for aluminum production, and/or the use of the carbon precursor material as coating material for carbon-coated particles for the manufacturing of battery electrodes. In addition, the present invention provides a process for obtaining a carbon precursor material comprising the steps of providing coal tar and/or petroleum-based raw material, or a coal tar-based and/or petroleum-based pitch, exposing the raw material or the pitch to a first vacuum distillation process, thereby obtaining a raw material-based distillate fraction or a pitch-based distillate fraction, subsequently exposing said distillate fraction to a second vacuum distillation process, thereby obtaining a distillation residue being said carbon precursor material.
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公开(公告)号：EP4215480A1
公开(公告)日：2023-07-26
申请号：EP22152929.0
申请日：2022-01-24
发明人： Spahr, Michael , Kuhnt, Christopher , Claes, Joris
IPC分类号： C01B32/05
摘要： The present invention is directed to a method for producing carbon coated particles or aggregates of carbon coated particles, the method comprising:
- providing a number of particles to be coated,
- producing an intermediate molten pitch product,
- directly dispersing the intermediate pitch product on the particles,
- subsequently carbonizing the particles.
In addition, the present invention is directed to a method of manufacturing a battery electrode comprising said method for producing said carbon-coated particles or said aggregates of carbon coated particles.-
公开(公告)号：EP4194396A1
公开(公告)日：2023-06-14
申请号：EP21214111.3
申请日：2021-12-13
摘要： The present invention is directed to use of a petroleum-derived pitch product as coating material for graphite particles for the manufacturing of battery electrodes, characterized in that said pitch product has a melt viscosity index log 10 (visc)*100/SPM between 1.2 and 3.0 at 220°C and between 1.0 and 2.5 at 240°C, wherein visc = melt viscosity (mPa.s) and SPM= softening point °C Mettler.
Further, the present invention is directed to a battery electrode comprising a coating made of said pitch product, as well as directed to a battery comprising an electrode having a coating made of said pitch product.
In addition, the present invention is directed to a process for obtaining a petroleum-derived pitch product as mentioned above, said process comprising a petroleum vacuum distillation process step for obtaining petroleum-derived distillation residue. Further, the invention is directed to a process for manufacturing a battery electrode comprising said process for producing a pitch product.
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