2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 6: Yagi Intl. Symp. / Metals & Alloys Processing

Editors:	Kongoli F, Akiyama T, Nogami H, Saito K, Fujibayashi A
Publisher:	Flogen Star OUTREACH
Publication Year:	2016
Pages:	480 pages
ISBN:	978-1-987820-46-1
ISSN:	2291-1227 (Metals and Materials Processing in a Clean Environment Series)

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Investigation for optimum conditions of Wakayama briquetting process

Mikawa Kenichi¹;
¹NIPPON STEEL•SUMIKIN KOUTETSU WAKAYAMA CORPORATION, Wakayama-shi, Japan;
Type of Paper: Regular
Id Paper: 152
Topic: 3

Abstract:

In Wakayama coke plant, briquette coking process is adopted for coal preprocessing. Briquette coking process enables making high strength coke and increasing the use of low rank coals by high apparent density. However on the conveying process from briquette machine to coal tower, briquettes are broken down by drop impact. As a result, the collapses of briquette cause degrade in coke strength. Therefore, it is necessary to make high strength briquette which is capable of withstanding drop impact.
Our purpose is to make high strength briquette by optimizing kneading and briquetting conditions.
At first, a correlation between general evaluation methods of briquette strength index and collapse behavior of briquette on conveying process was checked. On the basis of the prior result, kneading temperature and linear pressure were optimized to improve briquetting yield rate and convey yield rate.
In terms of briquetting yield rate, it declined drastically below a certain linear pressure at any kneading temperature. On the other hand, convey yield rate was significantly influenced by kneading temperature. High kneading temperature could improve convey yield rate. However if kneading temperature was insufficient, high linear pressure caused degrade of conveying yield rate.

Keywords:

Coke;


References:

[1] Y. Nakashima, S. Mochizuki, S. Ito, K. Nakagawa, K. Nishimoto and K. Kobayashi: Proc.2nd International Cokemaking Congress, (1992), 518.
[2] S.Tanaka, K.Okanishi, A. Kikuchi and Y. Yamamura: 56th Ironmaking Conf., 56 (1997), 139.
[3] K. Nishioka, H. Oshima, I. Sugiyama and H. Fujikawa: tetsu-to-Hagane, 90 (2004), 614.

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Cite this article as:

Kenichi M. Investigation for optimum conditions of Wakayama briquetting process. In: Kongoli F, Akiyama T, Nogami H, Saito K, Fujibayashi A, editors. Sustainable Industrial Processing Summit SIPS 2016 Volume 6: Yagi Intl. Symp. / Metals & Alloys Processing. Volume 6. Montreal(Canada): FLOGEN Star Outreach. 2016. p. 316-321.