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Method for preparing high-performance isostatic pressing graphite in short process
The invention belongs to the field of carbon product production, and provides a method for preparing high-performance isostatic pressing graphite in a short process. The method comprises the following steps: (1) preparing materials, wherein aggregate comprises calcined pitch coke, calcined petroleum coke and a graphite additive; the graphite additive comprises isostatic pressing graphite, natural crystalline flake graphite or microcrystalline graphite; (2) hot mixing: preheating the aggregate and then adding asphalt, wherein the softening point of the asphalt is higher than 115 DEG C, and the coking value of the asphalt is higher than 55%; (3) cold mixing: after hot mixing is finished, discharging the hot pot paste into a cooling pot for cold mixing to obtain cold pot paste; (4) secondary grinding; (5) sieving and charging; (6) vibrating and vacuumizing; (7) performing isostatic pressing and demolding to obtain a green body; and (8) performing primary roasting and graphitization. The method provides a new production process, can overcome the defects existing in the prior art, and can produce and prepare a high-performance product with the volume density higher than 1.80 g/cm < 3 > and the bending resistance higher than 45 MPa while the production cycle is remarkably shortened.
本发明属于炭素制品生产领域，提供了一种短流程制备高性能等静压石墨的方法。该方法包括：(1)配料：骨料包括：煅后沥青焦、煅后石油焦和石墨添加剂；石墨添加剂包括等静压石墨、天然鳞片石墨或微晶石墨；(2)热混：所述骨料预热后加入沥青，沥青的软化点高于115℃，沥青的结焦值高于55％；(3)冷混：热混结束后，将热锅糊料排入冷却锅中冷混后得到冷锅糊料；(4)二次磨粉；(5)过筛装料：(6)振动抽真空：(7)等静压成型脱模得生坯：(8)一次焙烧和石墨化。该方法提供了一种新的生产工艺，能够克服现有工艺存在的上述缺陷，在显著缩短生产周期的同时生产制备得到体积密度高于1.80g/cm3、抗折高于45MPa的高性能产品。
Method for preparing high-performance isostatic pressing graphite in short process
The invention belongs to the field of carbon product production, and provides a method for preparing high-performance isostatic pressing graphite in a short process. The method comprises the following steps: (1) preparing materials, wherein aggregate comprises calcined pitch coke, calcined petroleum coke and a graphite additive; the graphite additive comprises isostatic pressing graphite, natural crystalline flake graphite or microcrystalline graphite; (2) hot mixing: preheating the aggregate and then adding asphalt, wherein the softening point of the asphalt is higher than 115 DEG C, and the coking value of the asphalt is higher than 55%; (3) cold mixing: after hot mixing is finished, discharging the hot pot paste into a cooling pot for cold mixing to obtain cold pot paste; (4) secondary grinding; (5) sieving and charging; (6) vibrating and vacuumizing; (7) performing isostatic pressing and demolding to obtain a green body; and (8) performing primary roasting and graphitization. The method provides a new production process, can overcome the defects existing in the prior art, and can produce and prepare a high-performance product with the volume density higher than 1.80 g/cm < 3 > and the bending resistance higher than 45 MPa while the production cycle is remarkably shortened.
本发明属于炭素制品生产领域，提供了一种短流程制备高性能等静压石墨的方法。该方法包括：(1)配料：骨料包括：煅后沥青焦、煅后石油焦和石墨添加剂；石墨添加剂包括等静压石墨、天然鳞片石墨或微晶石墨；(2)热混：所述骨料预热后加入沥青，沥青的软化点高于115℃，沥青的结焦值高于55％；(3)冷混：热混结束后，将热锅糊料排入冷却锅中冷混后得到冷锅糊料；(4)二次磨粉；(5)过筛装料：(6)振动抽真空：(7)等静压成型脱模得生坯：(8)一次焙烧和石墨化。该方法提供了一种新的生产工艺，能够克服现有工艺存在的上述缺陷，在显著缩短生产周期的同时生产制备得到体积密度高于1.80g/cm3、抗折高于45MPa的高性能产品。
Method for preparing high-performance isostatic pressing graphite in short process
一种短流程制备高性能等静压石墨的方法
ZHANG JUNHUA (author) / LIU YU (author) / WEN XIANJUN (author)
2022-06-10
Patent
Electronic Resource
Chinese
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