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Better Coke by Using Antifissurants: Results for Illinois No. 6 and High Splint Coals.

Authors
Kovalik-MJ; Wolfson-DE; Mafrica-L
Source
NTIS: PB 218 428 :20 pages
Link
NIOSHTIC No.
10008970
Abstract
Illinois No. 6, a high-volatile B coal of low fluidity, was blended with fluidized-bed char and coke breeze to improve the strength of the coke obtained from carbonizing this coal. Twenty-one tests, selected from those made in the small-scale hanson carbonizer, were carbonized in the bm-aga 13-inch-diameter, cylindrical retort, with a coal charge of about 90 pounds; the strength of the cokes was determined by the standard ASTM tumbler test. Using the same procedure, 10 tests were made with high splint, a high-volatile a coal from Harlan County, Kentucky. Carbonization of the blends produced larger and stronger cokes than did the Illinois No. 6 Coal singly. The optimum blend contained 6 percent each of char and coke breeze. Further improvement in coke strength was realized by either preheating this blend prior to carbonization or by adding a small proportion of a premium blending coal. The former method could possibly eliminate the use of premium coking coals in blends with Illinois No. 6 Coal to make an acceptable metallurgical coke. Except for no improvement in coke strength by preheating, results for high splint coal showed behavior similar to that of the Illinois No. 6 Coal.
Publication Date
19730101
Document Type
IH; Report of Investigation;
Fiscal Year
1973
NTIS Accession No.
PB-218428
NTIS Price
A03
Identifying No.
RI 7718
NIOSH Division
PERC;
Source Name
NTIS: PB 218 428
State
IL; KY;
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