KOKLAŞMAYAN AMASRA VE ARMUTÇUK KÖMÜRLERİNİN METALURJİK KOK ÜRETİMİNDE KULLANILMASI İMKÂNLARININ PİLOT FABRİKA ÇAPINDA ARAŞTIRILMASI

Koklaşmayan Armutçuk ve Amasra kömürlerinin Geliştirilmiş Briket Şarj Yöntemi (Sumi-Coal System) ile metalurjik kok üretiminde kullanılması olanakları pilot çapta araştırılmıştır. Bu yöntemin uygulanması ile demir-çelik sektöründe kullanılmakta olan iyi koklaşabilir Zonguldak kömüründen veya ithal edilen yüksek kaliteli kömürlerden önemli ölçüde tasarruf etmek mümkün olacaktır. Araştırma çalışmasının sonucunda şu neticelere varılmıştır: Armutçuk ve Amasra kömürleri Geliştirilmiş Briket Şarj Yöntemine uygun kömür cinsleridir; (2) Bu yöntemin uygulanmasıyle % 25-30 oranında Armutçuk kömürü ve % 15-20 oranında Amasra kömürü Zonguldak veya ithal kömürlere ilâve edilerek metalurjik kok üretiminde değerlendirilebilir. Elde edilen kokların parça büyüklüğü, mekanik sağlamlığı, yoğunluğu, porozite ve reaktivite değerleri yüksek fırın operasyonunda hiç bir işletme problemine neden olmayacak özelliklerdedir; (3) Bu çalışmada birçok faktörün tam olarak bilinememesinden dolayı fizibilite çalışması için oldukça basit kabuller yapılmıştır; fakat projenin gerçekleşmesi yönünden önem taşımaktadır. Kullanılan dataların bir kısmı Ereğli Demir ve Çelik Fabrikalarından, diğer bir kısmı da Japonya'daki gerçek operasyon şartlarından alınmıştır. Ereğli Demir ve Çelik Fabrikalarının ham çelik üretimi 2.0 mil. T/y, pik demir üretimi 1.5 mil. T/y ve toplam kok tüketimi 1.1 mil. T/y olarak saptanmıştır. Operasyon kok fırınlarının üzerindeki kömür kulesine bağlı şarj konveyörüne göre zamanlanarak briket bunkeri yapımından tasarruf edilecektir. Koklaşmayan kömür, mevcut bulunan ana kömür bunkerinden alınacak ve parça büyüklüğü % 80 i - 3.0 rnm olacaktır. Bütün mekanik, elektrik ve enstrumental ekipmanın Japonya'dan FOB fiyat üzerinden temini öngörülmüştür. Koklaşabilir Zonguldak kömürü 14 900 TL/t, koklaşmayan Armutçuk 13 200 TL/t, Amasra kömürü 9 200TL/t ve zift 25 000 TL/t fiyatı üzerinden yapılanfizibilite çalışmalarına göre bu proses Ereğli Demir ve Çelik Fabrikalarında uygulanırsa, kısa bir süre içerisinde kendini karşılayacaktır. Zonguldak kömürüne % 25 oranında Armutçuk katılarak ton kok başına 1.0 US $, % 20 Amasra kömürü katılarak 3.0 US $, koklaşan ve koklaşmayan kömürlerin ithal edilmesi halinde ise 6.0 US $ tasarruf sağlanabilecektir.

Anahtar Kelimeler:

KOKLAŞMAYAN AMASRA, ARMUTÇUK KÖMÜRLERİ, METALURJİK KOK ÜRETİMİ

A PILOT PLANT SCALE INVESTIGATION OF POSSIBILITY OF USING NON-COKING ARMUTÇUK AND AMASRA COALS IN METALLURGICAL COKE PRODUCTION

In this work, the possibility of utilizing the non-coking Armutçuk and Amasra coals for metallurgical coke production through the Sumi-Coal Improved Briquette Charging Method has been investigated. The successful implementation of the said process would resold in considerable saving in the consumption of coking Zonguldak coal or the high quality imported coals. Results of the research are as below. Both Armutçuk and Amasra coals are suitable for the Sumi-Coal process. As far as the coke size, mechanical strength, density, porosity, reaktivity and chemical analyses are concerned about 25-30 % of Armutçuk or 15-20 % of Amasra coal can be used in the metallurgical coke production by the application of the Sumi-Coal process, without creating by operational difficulties in the blast furnace. The feasibility study of this work is not so simple because of too many unknown factors. However, the feasibility study carried out, under the following condition: Basic data were from actual operating results in Japan. The price estimation of the equipments given by a Japanies expert were based on 1979, prices. The feasibility data were based on 1.5 X 106T/y pig iron and 2xl06T/y crude steel and total coke consumption 1.1 x 106T/y. The operation is to be syncronized with that of the charging conveyor to the coal tower of the coke oven. Non-coking coal, as material shall be received in the existing main coal bunker and its size shall be 80 % under 3 mm. All utilities necessary for this plant shall be supplied by Ereğli works. Supply of all the mechanical equipments market flow sheet and corresponding electric and instrumentation equipments at FOB Japan basis. The price of coals and utilities are for Zonguldak coal 14,900 TL/t, Armut9uk coal 13,200 TL/t and Amasra coal 9,200 TL/t and 25,000 TL/t for pitch. For the imported are 100 $/t coking coal and 70 $/t non-coking coal. From the result of this feasibility study, can be considered the following profit: When the perscentage of Armutçuk coal added to the Zonguldak coal was possible, a saving of 1.0 US $ per ton of coke was predicted when Amasra coal was added to the Zonguldak coal in ratio of 20 %. If both of the coking and non-coking coals were imported a possible saving of 6.0 US $ per ton of the coke produced would be expected.

Keywords:

A PILOT PLANT SCALE, INVESTIGATION OF POSSIBILITY, NON-COKING ARMUTÇUK,

PDF

___

Ahland, E.; Lehmann, J; Peters W. and Langhoff, J., 1976, The Manufacture of Metalurgical Formed-Coke According to the BFL-Hot Briquetting Process.
Dartnell, J., 1977, Coke in the Blast-Furnace: Conference on Coal, Coke and the Blast-Furnace, Held by the Metals Society, Middlesbrough.
Elliott, D.R., 1969, Blast-Furnace Irregularities Caused by Coke-Quality Variations: Conference on Coke in Ironmaking, The Iron and Steel Institute and the Institute of Fuel, London.
Flockenhaus, C.; Rhode, W. and Habermehl, D., 1974 May, Increased Productivity in Carbonization and better Cake Quality by the Precarbon Process: 33 rd. Ironmaking Conferens of AIME.
Giedroyc, V. and Mathieson, I.M., 1969, Influence of the Physical Quality of Coke on Blast-Furnace Performance: Conference on Coke in Ironmaking, The Iron and Stell Institute and the Institute of Fuel, London.
Graham, J.P., 1969, Specification of the Properties of Coke for Ironmaking: UK Blast-Furnace Coke Specifications, Conference on Coke in Ironmaking, The Iron and Steel Institute and the Institute of Fuel, London
Hatano, M., 1976, The Effect of Coke Properties on the Blast-Furnace Operation: The Sumitomo Search. International Organization for Standardization's (ISO) Technical Comittee 27-Solid Mineral Fuels, United Nations Publication-No: 1956 I.E.4. Metallurgical Coals and coke, Iron steel and coke, vol I Dec. (1978).
Nacamura, N.; Togina, Y. and Adachi, T., 1977, Phylosophy of Blending Coals and Coke-Making Technology in Japon: Conference on Coal, Coke and the Blast-Furnace, Held by the Metals Society, Middlesbrough.
; and Tateoka, M., 1977, Behaviour of Coke in large Blast-Furnaces: Conference on Coal, Coke and the Blast-Furnace, Held by the Metals Society, Middlesbrough.
Nixon, E. W. and Brooks, S.H., 1969, Effect of Chemical and Physical Properties of Coke on Blast-Furnace Performance: Conference on Coke in Ironmaking, The Iron and Steel Institute and the Institute of Fuel, London.
Rhode, W.; Beck, K.G. and Wagener, D., 1974, Precarbon: An Alternative to Stamp Charging for the Production of Blast-Furnace Coke: Bergbauforschung and Didier Engineering.
Schapiro, N.; Gray, R.J. and Eusner, G.R., 1961, Recent Developments in Coal Petrography: Blast Furnace, Coke Oven and Raw Materials Conference, Proceeding, vol. 20 Philadelphia Meeting, 89-112.
Sumi-Coal System., 1977, Sumitomo Shoji Kaisha Ltd. Osaka.
TSE 690, January 1969, The overal moisture determination in bituminous coal.
TSE 711, March 1969, The volatile matter determination of coal and coke.
TSE 330, January 1966, The ash determination in bituminous coal.
TSE 363, March 1966, The overal sulfur determination in bituminous coal with Eschka method.
Wagener, D., Ergun, H.; Sugasawa, K.; Hirao, E. and Sakai, T., 1977, DKS Formed-Coke Process, Operation Results
and Recent Developments: 36 th. Ironmaking Conference of the Iron and Steel Society of AIME, Pittsburgh, Pen. USA.
and 1978, Modern Industrial Ways of Coke Making: Symposium on Raw Materials, Feed and Energy Sources for the Iron and Steel Industry, Philippines.
Wilkinson, H.C., 1964, The Measurement of Some Physical Properties of Coke and their Possible Significance in Terms of Blast-Furnace Performance: Journal of the Institute of Fuel.
Zielinski, H., 1972, Present Methode of Coke Manufacture: Foreign Scientific Publications Department of the National Center for scientific, Technical and Economical Information, Warsaw, Poland.