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Mixing and kneading method of isostatic pressing graphite product and product thereof
The invention discloses a mixing and kneading method of an isostatic pressing graphite product and the product thereof, relates to the technical field of graphite preparation, and aims to solve the problems of cost increase and poor isotropy caused by excessive mixing and kneading of asphalt. The method comprises the following steps: dividing needle coke into two parts, crushing one part, and screening into four particle size distributions a, b, c and d; grinding the other part into fine powder f; respectively putting a, b, c, d and f into different kneading machines, and respectively adding high-temperature coal pitch for kneading to respectively obtain paste materials A, B, C, D and F; uniformly mixing the paste material A, the paste material B, the paste material C and the paste material D, crushing the mixture into two particle size intervals, and grinding the paste material F into fine powder; the preparation method comprises the following steps: adding the paste materials with three particle sizes into a mixer according to a certain ratio, fully and uniformly mixing, then carrying out cold isostatic pressing molding to obtain a green body, and then carrying out secondary roasting, primary dipping and graphitization to obtain the product. According to the invention, the usage amount of asphalt can be reduced, non-uniform wrapping of needle-like coke asphalt with different particle sizes is avoided, and the isotropy of the product is good.
本发明公开了一种等静压石墨制品的混捏方法及其制品，涉及石墨制备技术领域，为解决混捏沥青过量会带来成本提高和各向同性变差的问题；本发明包括将针状焦分成两份，一份破碎后筛分成四个粒度分布a、b、c、d；另一份磨成细粉f；将a、b、c、d、f分别投入到不同混捏机中，并分别加入高温煤沥青进行混捏，分别得到糊料A、B、C、D、F；将糊料A、B、C和D混合均匀后进行破碎成两个粒度区间，糊料F磨成细粉；将三种粒径糊料按一定配比加入到混料机中充分混匀，后进行冷等静压成型得到生胚，再经过二次焙烧，一次浸渍，再石墨化得到产品；本发明可降低沥青使用量，避免不同大小颗粒针状焦沥青包裹不均匀，产品各向同性度好。
Mixing and kneading method of isostatic pressing graphite product and product thereof
The invention discloses a mixing and kneading method of an isostatic pressing graphite product and the product thereof, relates to the technical field of graphite preparation, and aims to solve the problems of cost increase and poor isotropy caused by excessive mixing and kneading of asphalt. The method comprises the following steps: dividing needle coke into two parts, crushing one part, and screening into four particle size distributions a, b, c and d; grinding the other part into fine powder f; respectively putting a, b, c, d and f into different kneading machines, and respectively adding high-temperature coal pitch for kneading to respectively obtain paste materials A, B, C, D and F; uniformly mixing the paste material A, the paste material B, the paste material C and the paste material D, crushing the mixture into two particle size intervals, and grinding the paste material F into fine powder; the preparation method comprises the following steps: adding the paste materials with three particle sizes into a mixer according to a certain ratio, fully and uniformly mixing, then carrying out cold isostatic pressing molding to obtain a green body, and then carrying out secondary roasting, primary dipping and graphitization to obtain the product. According to the invention, the usage amount of asphalt can be reduced, non-uniform wrapping of needle-like coke asphalt with different particle sizes is avoided, and the isotropy of the product is good.
本发明公开了一种等静压石墨制品的混捏方法及其制品，涉及石墨制备技术领域，为解决混捏沥青过量会带来成本提高和各向同性变差的问题；本发明包括将针状焦分成两份，一份破碎后筛分成四个粒度分布a、b、c、d；另一份磨成细粉f；将a、b、c、d、f分别投入到不同混捏机中，并分别加入高温煤沥青进行混捏，分别得到糊料A、B、C、D、F；将糊料A、B、C和D混合均匀后进行破碎成两个粒度区间，糊料F磨成细粉；将三种粒径糊料按一定配比加入到混料机中充分混匀，后进行冷等静压成型得到生胚，再经过二次焙烧，一次浸渍，再石墨化得到产品；本发明可降低沥青使用量，避免不同大小颗粒针状焦沥青包裹不均匀，产品各向同性度好。
Mixing and kneading method of isostatic pressing graphite product and product thereof
一种等静压石墨制品的混捏方法及其制品
LI XIAOXIANG (author) / WANG WEI (author) / PEI XIAODONG (author) / LI TAO (author) / SHEN BAOJIN (author) / XIE AIXIANG (author)
2022-10-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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