Methods for producing polygranular graphite bodies
AssigneeShowa Denko Carbon Germany GmbH
InventorsWilhelm Frohs, Rainer Schmitt
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Abstract
A method for the production of polygranular graphite bodies including the step of provisioning a mixture including a high-temperature treated anthracite having a high vitrinite content and a petroleum-based needle coke and/or a pitch-based needle coke, and provisioning at least one binder coke precursor. The method also includes the steps of forming a green body from the mixture from the provisioning step, and carbonizing and graphitizing the green body.
Claims8
A method for the production of polygranular graphite bodies, comprising the steps of:
- a) provisioning a mixture including a high-temperature treated anthracite having a high vitrinite content and at least one of a petroleum-based needle coke and a pitch-based needle coke, 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 2 to 30 weight-%, a share of at least one of the petroleum-based needle coke and the pitch-based needle coke is 40 to 95 weight-%, and a share of said at least one binder coke precursor is 5 to 30 weight-%.
A method for the production of polygranular graphite bodies, comprising the steps of:
- a) adding a high-temperature treated anthracite, which has a high vitrinite content, to petroleum residues or coal tar pitch in a delayed coker;
- b) coking said mixture from step a) to a needle coke;
- c) provisioning a mixture including the needle coke from step b) and at least one binder coke precursor;
- d) forming a green body from said mixture in step c);
- and
- e) carbonizing and graphitizing said green body in step d), wherein a share of the high-temperature treated anthracite is 2 to 30 weight-%, a share of at least one of the petroleum-based needle coke and the pitch-based needle coke is 40 to 95 weight-%, and a share of said at least one binder coke precursor is 5 to 30 weight-%.
Dependencies are inferred from the claim text.