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Block sintering graphitization method of graphite negative electrode material
The invention relates to the technical field of battery negative electrode material preparation, in particular to a block sintering graphitization method of a graphite negative electrode material. The method comprises the steps of (1) grinding, specifically, grinding raw materials into powder; (2) conducting asphalt mixing, specifically, mixing the ground raw materials with asphalt powder to obtain a mixture; (3) mixing and kneading; (4) sieving; (5) conducting isostatic molding, specifically, loading the sieved material into a mold for isostatic molding; (6) charging; (7) carrying out graphitization treatment; (8) crushing and scattering; and (9) screening and packaging. According to the method, the sieved materials are loaded into the mold with a square or cylindrical inner cavity to be subjected to isostatic molding to form the block materials, the block materials are directly loaded into the graphitization furnace to be placed in order, a crucible is not used any more, the charging amount is increased and is increased to 100 t/furnace from 50 t/furnace, the raw material utilization rate is high, and the electricity utilization cost is also saved; and the uniformity of the current density in the furnace is also ensured, and the quality uniformity and homogeneity of the upper and lower graphitized materials in the furnace are ensured.
本发明涉及电池负极材料制备技术领域，具体涉及一种石墨负极材料块烧石墨化方法，包括以下步骤：（1）磨粉：原料磨粉；（2）混沥青：将磨粉后的原料和沥青粉混合得混合料；（3）混捏；（4）过筛；（5）等静压成型：将过筛后的物料装入模具等静压成型；（6）装炉；（7）石墨化处理；（8）破碎打散；（9）筛分包装。本发明将过筛后的物料装入内腔形状为方形或者圆柱形的模具等静压成型为块料，直接将块料装入石墨化炉中摆放整齐，不再使用坩锅，加大了装炉量，装炉量由50t/炉提升至100t/炉，原料利用率高，还节约用电成本；使用本发明还保证了炉内电流密度的均匀性，确保炉内上下石墨化物料的质量均一性、同质性。
Block sintering graphitization method of graphite negative electrode material
The invention relates to the technical field of battery negative electrode material preparation, in particular to a block sintering graphitization method of a graphite negative electrode material. The method comprises the steps of (1) grinding, specifically, grinding raw materials into powder; (2) conducting asphalt mixing, specifically, mixing the ground raw materials with asphalt powder to obtain a mixture; (3) mixing and kneading; (4) sieving; (5) conducting isostatic molding, specifically, loading the sieved material into a mold for isostatic molding; (6) charging; (7) carrying out graphitization treatment; (8) crushing and scattering; and (9) screening and packaging. According to the method, the sieved materials are loaded into the mold with a square or cylindrical inner cavity to be subjected to isostatic molding to form the block materials, the block materials are directly loaded into the graphitization furnace to be placed in order, a crucible is not used any more, the charging amount is increased and is increased to 100 t/furnace from 50 t/furnace, the raw material utilization rate is high, and the electricity utilization cost is also saved; and the uniformity of the current density in the furnace is also ensured, and the quality uniformity and homogeneity of the upper and lower graphitized materials in the furnace are ensured.
本发明涉及电池负极材料制备技术领域，具体涉及一种石墨负极材料块烧石墨化方法，包括以下步骤：（1）磨粉：原料磨粉；（2）混沥青：将磨粉后的原料和沥青粉混合得混合料；（3）混捏；（4）过筛；（5）等静压成型：将过筛后的物料装入模具等静压成型；（6）装炉；（7）石墨化处理；（8）破碎打散；（9）筛分包装。本发明将过筛后的物料装入内腔形状为方形或者圆柱形的模具等静压成型为块料，直接将块料装入石墨化炉中摆放整齐，不再使用坩锅，加大了装炉量，装炉量由50t/炉提升至100t/炉，原料利用率高，还节约用电成本；使用本发明还保证了炉内电流密度的均匀性，确保炉内上下石墨化物料的质量均一性、同质性。
Block sintering graphitization method of graphite negative electrode material
一种石墨负极材料块烧石墨化方法
XIN LING (Autor:in) / LIU MINGXIONG (Autor:in) / CUI QIANG (Autor:in) / YANG GUANGJIE (Autor:in)
24.09.2021
Patent
Elektronische Ressource
Chinesisch
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