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Needle coke grading formula and preparation method for preparing high-quality graphite electrode
The embodiment of the invention discloses a needle coke grading formula for preparing a high-quality graphite electrode and a preparation method, and the needle coke grading formula for preparing the graphite electrode at least comprises first-stage needle coke, second-stage needle coke, third-stage needle coke and fourth-stage needle coke; the equivalent particle size of the first-grade needle coke is 22 [mu] m-28 [mu] m; the equivalent particle size of the secondary needle coke is 2-6 [mu] m; the equivalent particle size of the third-stage needle coke is 1-2 microns; the equivalent particle size of the fourth-stage needle coke is 0.1 mu m-0. 9 mu m. Compared with the prior art, the needle coke grading formula and the preparation method for preparing the high-quality graphite electrode, provided by the invention, have the advantages that a method for carrying out grain grading on large particles and small particles is adopted, the large particles form a main conductive path, and the small particles are filled in gaps of the large particles to form a more compact conductive path, so that the conductive performance is relatively good; and the prepared graphite electrode is high in volume density, low in thermal expansion coefficient and good in breaking strength.
本发明实施例公开了一种制备优质石墨电极的针状焦级配配方及制备方法，其中，一种制备石墨电极的针状焦级配配方，包括：所述级配配方至少包括一级针状焦、二级针状焦、三级针状焦和四级针状焦；所述一级针状焦的等效粒径为22μm～28μm；所述二级针状焦的等效粒径为2μm～6μm；所述三级针状焦的等效粒径为1μm～2μm；所述四级针状焦的等效粒径为0.1μm～0.9μm。本发明提供的制备优质石墨电极的针状焦级配配方及制备方法，相对于现有技术，采用大颗粒与小颗粒进行颗粒级配的方法，大颗粒形成主要的导电通路，小颗粒填充在大颗粒的空隙间又形成更为致密的导电通路，使其导电性能较好，且制备的石墨电极体积密度高，热膨胀系数低，抗折强度好。
Needle coke grading formula and preparation method for preparing high-quality graphite electrode
The embodiment of the invention discloses a needle coke grading formula for preparing a high-quality graphite electrode and a preparation method, and the needle coke grading formula for preparing the graphite electrode at least comprises first-stage needle coke, second-stage needle coke, third-stage needle coke and fourth-stage needle coke; the equivalent particle size of the first-grade needle coke is 22 [mu] m-28 [mu] m; the equivalent particle size of the secondary needle coke is 2-6 [mu] m; the equivalent particle size of the third-stage needle coke is 1-2 microns; the equivalent particle size of the fourth-stage needle coke is 0.1 mu m-0. 9 mu m. Compared with the prior art, the needle coke grading formula and the preparation method for preparing the high-quality graphite electrode, provided by the invention, have the advantages that a method for carrying out grain grading on large particles and small particles is adopted, the large particles form a main conductive path, and the small particles are filled in gaps of the large particles to form a more compact conductive path, so that the conductive performance is relatively good; and the prepared graphite electrode is high in volume density, low in thermal expansion coefficient and good in breaking strength.
本发明实施例公开了一种制备优质石墨电极的针状焦级配配方及制备方法，其中，一种制备石墨电极的针状焦级配配方，包括：所述级配配方至少包括一级针状焦、二级针状焦、三级针状焦和四级针状焦；所述一级针状焦的等效粒径为22μm～28μm；所述二级针状焦的等效粒径为2μm～6μm；所述三级针状焦的等效粒径为1μm～2μm；所述四级针状焦的等效粒径为0.1μm～0.9μm。本发明提供的制备优质石墨电极的针状焦级配配方及制备方法，相对于现有技术，采用大颗粒与小颗粒进行颗粒级配的方法，大颗粒形成主要的导电通路，小颗粒填充在大颗粒的空隙间又形成更为致密的导电通路，使其导电性能较好，且制备的石墨电极体积密度高，热膨胀系数低，抗折强度好。
Needle coke grading formula and preparation method for preparing high-quality graphite electrode
一种制备优质石墨电极的针状焦级配配方及制备方法
ZHU QING (author) / WANG CHUNMEI (author) / WEI YUHAI (author) / QI YANFEI (author) / LEI DONG (author) / ZHAO WENHAI (author)
2023-06-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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