Method for producing graphite bodies
A method for the production of graphite bodies, including the step of provisioning a mixture including a high-temperature treated anthracite having a high vitrinite content and provisioning at least one binder coke precursor. The method also includes the steps of forming a green body from the mixture provided in the provisioning step, and carbonizing and graphitizing the green body.
1. A method for the production of graphite bodies, comprising the following steps:
a) provisioning a mixture including a high-temperature treated anthracite having a high vitrinite content and provisioning at least one binder coke precursor;
b) forming a green body from said mixture provided in step a); and
c) carbonizing and graphitizing said green body from step b), wherein a share of the high-temperature treated anthracite is 70 to 95 weight-% and a share of said at least one binder coke precursor is 5 to 30 weight-%.
2. The method according to claim 1 , wherein in step c) following carbonization and prior to graphitization, there is included a step of impregnating said green body with a pitch.
3. The method according to claim 2 , wherein up to two steps of impregnating said green body with the pitch occur.
4. The method according to claim 1 , wherein said at least one binder coke precursors is selected from a group consisting of at least one of a pitch, a tar, a bitumen, a phenol resin, and a furan resin.
5. The method according to claim 1 , wherein up to 50 weight-% of the high-temperature treated anthracite is replaced with at least one of a petroleum-based and a coal tar pitch-based needle coke.
6. The method according to claim 5 , wherein at least one of the high-temperature treated anthracite, said petroleum-based needle coke, and said coal tar pitch-based needle coke are graded prior to metering.
7. The method according to claim 6 , wherein at least one of the high-temperature treated anthracite, said petroleum-based needle coke, and said coal tar pitch-based needle coke are reduced in size to a plurality of particles prior to at least one of metering and grading.
8. The method according to claim 7 , wherein said plurality of particles have a maximum diameter of up to 25.0 mm.
9. A plurality of graphite bodies obtained by a method, comprising the steps of:
a) provisioning a mixture including a high-temperature treated anthracite having a high vitrinite content and provisioning at least one binder coke precursor;
b) forming a green body from said mixture provided in step a); and
c) carbonizing and graphitizing said green body from step b), wherein a share of the high-temperature treated anthracite is 70 to 95 weight-% and a share of said at least one binder coke precursor is 5 to 30 weight-%.
10. The plurality of graphite bodies of claim 9 , wherein said plurality of graphite bodies is in the form of a plurality of graphite electrodes or a plurality of graphite nipples.