Fused calcined petroleum coke and method of formation
First Claim
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1. A process for the production of anode grade coke comprised of the following steps:
- (a) providing at least one granular green coke material to be calcined, said granular green coke material having a volatile carbonaceous materials content of greater than or equal to 16% by weight;
(b) positioning said at least one green coke material in a furnace; and
(c) heating said at least one green coke material in the furnace in the absence of air, under static conditions and controlled temperature and time, so as to reduce the volatile carbonaceous materials content and agglomerate of said granular green coke material to an anode grade homogeneous coke product having a Real density (kg/dm3) within an accepted range of 1.95-2.10 and a grain stability (%) (8-4 mm) of 60-95.
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Abstract
Certain physical properties, chemical composition and a content of volatile carbonaceous materials define the limits of the use of coke by-products of crude oil refining as green cokes for use in the manufacture of calcined cokes suitable in the production of anodes for the reduction processes in the aluminum industry. These limits render large quantities of green coke unusable for the purpose set forth above. The invention shows a way to overcome these limits by rendering up to now unusable cokes usable as green cokes for the manufacture of calcined cokes for the production of anodes.
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Citations
18 Claims
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1. A process for the production of anode grade coke comprised of the following steps:
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(a) providing at least one granular green coke material to be calcined, said granular green coke material having a volatile carbonaceous materials content of greater than or equal to 16% by weight; (b) positioning said at least one green coke material in a furnace; and (c) heating said at least one green coke material in the furnace in the absence of air, under static conditions and controlled temperature and time, so as to reduce the volatile carbonaceous materials content and agglomerate of said granular green coke material to an anode grade homogeneous coke product having a Real density (kg/dm3) within an accepted range of 1.95-2.10 and a grain stability (%) (8-4 mm) of 60-95. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. Coke formed from a process comprised of the following steps of:
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(a) providing at least one granular green coke material to be calcined, said granular green coke material having a volatile carbonaceous materials content of greater than or equal to 16% by weight; (b) positioning said at least one green coke material in a furnace; (c) heating said at least one green coke material in the furnace in the absence of air under static conditions and controlled temperature and time so as to reduce the volatile carbonaceous materials content and agglomerate said granular green coke material to an anode grade coke product having a Real density (kg/dm3) within an accepted range of 1.95-2.10 and a grain stability (%) (8-4 mm) of 60-95.
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Specification