コークス製造における溶剤処理炭の粘結性補填材としての評価(コークス)(<特集>製銑)

概要

論文の詳細を見る
Tests were conducted on SRC (solvent refined coal) both in a test coke oven and commercial coke ovens to evaluate SRC as an additive in coke making. Our findings are as follows : 1) The addition of SRC to coal charges makes it possible to produce coke suitable for use in large-size commercial blast furnaces even if the original coal charge has low DI^<150>_<15> and CSR. 2) Compared with other coal charge pretreatment methods, the addition of 7-8% SRC can produce the same coke quality as that obtained from BBCP (Briquette-blend coking process) and the addition of 2-3% SRC can produce the same coke quality as that obtained from the coal preparation control process (CPCP). 3) Noncoking coal can be used for up to 20% of the coal charge under the condition that the amount of SRC addition is equal to half of non coking coal. As mentioned above, it has been ascertained that SRC is very effective as a caking additive. The reason is that SRC contributes to change pore texture and improves the optical texture of the coke produced. It has been also proved that coke strength (DI^<150>_<15>) of coal charges which include SRC can be estimated by applying the SI-CBI method based on coal petrology.
1982-11-01