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01056 Western Canadian coking coals—thermal rheology and coking quality
01 99m 039
New coke-quenching process
Babanin, V. I. and Zaidenberg, M. A. Koks Khim., 1995, (12), 22-25. (In Russian) Presents complex studies on development of first industrial installation of staged coke quenching.
New technical decisions aimed at improvement of technological and ecological indexes of byproduct coking
98lo1039
Gostev, Y. A. et al.
Koks Khim., 1995, (9), 28-33. (In Russian)
The place of coking in coal processing 98/01040 Zielin’ski, H. Karbo-Energochemical-Ekol., 1996, 41, (l), 3-7. (In Polish) As the main energy source, coal could be mass processes with methanol synthesis. World coal use for coking industry will be 0.5 Gtons/year. Another challenge for the coking industry is to start coke-like formed fuel production.
Solid fuels (detived solid fuels)
98lo1050 Ultrafine coal single-stage dewatering and briquetting process
Wilson, J. W. et al. Proc. Annu,lnt. Pittsburgh Coal Conf., 1995, 12, 599604. Coal samples of varying particle size distributions were tested for use in the dewatering and briquetting processes. Various bitumen emulsions were also tested to determine the optimum dewatering reagent. A laboratory-scale hydraulic compacting device was employed to carry out the dewatering and pelletizing tests. Discharge from the dewatering and briquetting processes was tested to determine compliance with current Federal and state requirements. The influence of bitumen emulsion on the sulfur content of prepared coal pellets were also examined. A ram extruder which can be operated continuously to simulate a rotary press operation, was also built. Testing of the apparatus for use in the fine coal dewatering and pelletizing process is being undertaken. 98Jo1051
Use of coke tar for spherical agglomeration of P
coal
98101041
Preparation
of coke
briquets
Gn bed-coking
chambers
Glyanchenko, V. D. er al. Koks Khim., 1995, (12), 17-22. (In Russian) A study on the preparation of special cokes by coking of briquettes prepared from a coal blend and lignosulfonate as a binder is presented.
Preparation of foundry coke from a ‘charge involving petroleum coke fines
98l81842
Unterberger, 0. G. et al. Koks Khim., 1995, (12), 13-17. (In Russian) The characteristics of foundry coke benefited from the use of petroleum coke fines in a coal blend. The optimum amount of the additive was 5%.
Process 98lOl843 Sakawa, M. er al. PCT 1996, JP Appl. 95/15,959, Coal, prepared by rapidly non-slightly-caking coal, furnace coke.
for producing blast-furnace coke Int. Appl. WO 96 23,852 (Cl. ClOB57/04), 8 Aug 2 Feb 1995, 29 pp. (In Japanese) heating a coal mixture comprising 10-30 wt% of a is carbonized in a coke oven to produce blast-
Stolarski, M. and Grazyna G. Karbo-Energochemical-Ekol., 1997, 42, (7), 231-234. (In Poland). Use of surplus coking tar as a bonding liquid in the coal agglomeration produces agglomerates that can be used as a raw material for preparation of coal adsorbents and smokeless fuels as well as a component of batch mixtures for coke production.
98lOlO52
Use of industrial oil waste in coke ovens
Zamboni, L. A. et al. Inf: Tectiol., 1997, 8, (l), 89-94. (In Spanish) Oil waste was added to coal for coking and considering that this addition may affect the useful life of coke oven walls, the present study focused on determining possible damage in the silica bricks of the walls. Different oil percentages were added to coal, and it was found that below 5% oil there was no difference between these samples and the original bricks. Above this value, a superficial film formation was observed, consisting of magnetite, mullite and silica glass. Samples were characterized by optical microscopy, SEM and EDAX. 98lOl853 Use of non-Ukrainlan coals in a coking charge of the Mariupol Byproduct Coking Plant
Production of semicoke from brown co
Teleshev, Y. V. et al. Koks Khim., 1995, (9), 9-13 (In Russian) Discusses the properties of imported coals.
Merts, R. K. Russ. RU 2,078,061 (Cl. ClOB49/10), 10 Feb 1997, SU Appl. 5,066,372, 5 Jun 1992. From Izobreteniya 1997, (4), 213. (In Russian)
98lO1854
98iOl944
98iOlO45
Production
of
water-resistant
brown-coal
agglomerates
Naundorf; W. et al. Ger. Offen. DE 19,537,238 (Cl. ClOLS/IO), 10 Apr 1997, Appl. 19,537,238, 6 Ott 1995, 5 pp. (In German) Wet, as-mined brown coal is mixed with 5-50% wet ground wood chips, straw, and/or grass (particle size 12 mm) with a saturation moisture content of 35-50% during the briquetting process. Addition of 2-10% water is optional and the brown coal-biomass mixture is intensively mixed under turbulent conditions with a distinct size reduction of coal. Subsequently, the mixture is subjected to conventional drying and pressing without a binder at 75-120 MPa and 40-80°C. A conventional briquetting equipment can be used and the resulting briquettes are weather- and storage-stable.
Redesign of the plant and its prospects 98&H 048 Gostev, Y. A. Koks Khim., 1995, (9), 5-6. (In Russian). ’ Changes in a 60-year-old by-product coking plant are described. Selection criteria for the optimal chargin -dlschar98lo1047 ging batch operation of large coke ovens. 3. DetermBnatlon of bulging pressure in industrial coke ovens Sheptovitskii, M. S. et al. Koks Khim., 1995, (9), 14-18. (In Russian) Bulging pressure can be determined with the method develbped in this study. Maximum bulging pressure was shown to fall at the end of one-third of the coking period and is one to two orders of magnitude higher than the value used in designing the coke ovens. Decreasing the content of fat coals in blends and increasing the coking period are conducive to decreasing the bulging pressure. 98lOlO48
Use of noncoking and low-volatile8 coals in charge mixtures for ovens with cells of widths up to 850 mm
Colletta, A. and Giromella, G. Comm. Eur. Communities, [Rep.] EUR, 1997, (EUR 15228), 139 pp. (In Italian) The authors examine the i uence of the width of a coking cell in largescale coke ovens with respec“$ to use of non-coking coal and low-cost coal and the resulting coke quality. Enlargement of the coking cell results in (1) an increase of charge density with respect to a reference coal, (2) an increase in the distillation (liquid removal) time in the cell, (3) an attenuation of maximum gas internal pressure and improved final shrinkage of the charge, (4) an increase in coke and blast furnace coke productivity and (5) an increase of CSR (coke strength after reaction) values of the coke.
Vibrational pelletizing of fine-grained material 98l81055 Banaszewski, T. et al. Zesz. Nauk. Politech. Slask., Corn., 1996, 23, (l), 1325. (In Polish) Presents vibrational pelletizing of fine-grained material and a prototype vibrational pelletizer, which finds use for pelletizing of fly ashes, semi-cokes and coal slurry. Western Canadian coking coals--thermal 98iO1058 and coking quality
rheology
Leeder, W. R. et al. Ironmaking Conf. Proc., 1997, 56, 37-44. Coke strength prediction based on thermal rheology indicates that cretaceous coals would not make high quality coke; however, both types of coals produce coke suitable for the iron blast furnace. This paper discusses the reasons why western Canadian coals exhibit lower rheological values and how to predict the strength of coke produced from them.
Selection of a technology for partial granulation of
coal charges
Proshunin, Y. E. et al. Koks Khim., 1997, (l), 12-18. (In Russian) The coking process benefits from partial agglomeration of coal charges prior to coking and the best results are attained by agglomeiation of fine charge components. Coking by-products, such as phenol waters can be used as binders.
Steps towards a full capacity operation of the future 98lo1849 U3 coking unit at Sollac Dunkerque
Delannay, G. and Andre, J. Rev. MetaNCah. If Tech., 1996, 93, (6), 799805. The U3 unit of the coking plant at Sollac Dunkerque consists of the B6 battery of ovens and the B7 battery. This paper presents a study in order to determine the cycle times for the critical equipments which will be compatible with the future production level, with a safety margin of 15 to 20%.
Fuel and Energy Abstracb
March 1998 95
New coke-quenching process
Babanin, V. I. and Zaidenberg, M. A. Koks Khim., 1995, (12), 22-25. (In Russian) Presents complex studies on development of first industrial installation of staged coke quenching.
New technical decisions aimed at improvement of technological and ecological indexes of byproduct coking
98lo1039
Gostev, Y. A. et al.
Koks Khim., 1995, (9), 28-33. (In Russian)
The place of coking in coal processing 98/01040 Zielin’ski, H. Karbo-Energochemical-Ekol., 1996, 41, (l), 3-7. (In Polish) As the main energy source, coal could be mass processes with methanol synthesis. World coal use for coking industry will be 0.5 Gtons/year. Another challenge for the coking industry is to start coke-like formed fuel production.
Solid fuels (detived solid fuels)
98lo1050 Ultrafine coal single-stage dewatering and briquetting process
Wilson, J. W. et al. Proc. Annu,lnt. Pittsburgh Coal Conf., 1995, 12, 599604. Coal samples of varying particle size distributions were tested for use in the dewatering and briquetting processes. Various bitumen emulsions were also tested to determine the optimum dewatering reagent. A laboratory-scale hydraulic compacting device was employed to carry out the dewatering and pelletizing tests. Discharge from the dewatering and briquetting processes was tested to determine compliance with current Federal and state requirements. The influence of bitumen emulsion on the sulfur content of prepared coal pellets were also examined. A ram extruder which can be operated continuously to simulate a rotary press operation, was also built. Testing of the apparatus for use in the fine coal dewatering and pelletizing process is being undertaken. 98Jo1051
Use of coke tar for spherical agglomeration of P
coal
98101041
Preparation
of coke
briquets
Gn bed-coking
chambers
Glyanchenko, V. D. er al. Koks Khim., 1995, (12), 17-22. (In Russian) A study on the preparation of special cokes by coking of briquettes prepared from a coal blend and lignosulfonate as a binder is presented.
Preparation of foundry coke from a ‘charge involving petroleum coke fines
98l81842
Unterberger, 0. G. et al. Koks Khim., 1995, (12), 13-17. (In Russian) The characteristics of foundry coke benefited from the use of petroleum coke fines in a coal blend. The optimum amount of the additive was 5%.
Process 98lOl843 Sakawa, M. er al. PCT 1996, JP Appl. 95/15,959, Coal, prepared by rapidly non-slightly-caking coal, furnace coke.
for producing blast-furnace coke Int. Appl. WO 96 23,852 (Cl. ClOB57/04), 8 Aug 2 Feb 1995, 29 pp. (In Japanese) heating a coal mixture comprising 10-30 wt% of a is carbonized in a coke oven to produce blast-
Stolarski, M. and Grazyna G. Karbo-Energochemical-Ekol., 1997, 42, (7), 231-234. (In Poland). Use of surplus coking tar as a bonding liquid in the coal agglomeration produces agglomerates that can be used as a raw material for preparation of coal adsorbents and smokeless fuels as well as a component of batch mixtures for coke production.
98lOlO52
Use of industrial oil waste in coke ovens
Zamboni, L. A. et al. Inf: Tectiol., 1997, 8, (l), 89-94. (In Spanish) Oil waste was added to coal for coking and considering that this addition may affect the useful life of coke oven walls, the present study focused on determining possible damage in the silica bricks of the walls. Different oil percentages were added to coal, and it was found that below 5% oil there was no difference between these samples and the original bricks. Above this value, a superficial film formation was observed, consisting of magnetite, mullite and silica glass. Samples were characterized by optical microscopy, SEM and EDAX. 98lOl853 Use of non-Ukrainlan coals in a coking charge of the Mariupol Byproduct Coking Plant
Production of semicoke from brown co
Teleshev, Y. V. et al. Koks Khim., 1995, (9), 9-13 (In Russian) Discusses the properties of imported coals.
Merts, R. K. Russ. RU 2,078,061 (Cl. ClOB49/10), 10 Feb 1997, SU Appl. 5,066,372, 5 Jun 1992. From Izobreteniya 1997, (4), 213. (In Russian)
98lO1854
98iOl944
98iOlO45
Production
of
water-resistant
brown-coal
agglomerates
Naundorf; W. et al. Ger. Offen. DE 19,537,238 (Cl. ClOLS/IO), 10 Apr 1997, Appl. 19,537,238, 6 Ott 1995, 5 pp. (In German) Wet, as-mined brown coal is mixed with 5-50% wet ground wood chips, straw, and/or grass (particle size 12 mm) with a saturation moisture content of 35-50% during the briquetting process. Addition of 2-10% water is optional and the brown coal-biomass mixture is intensively mixed under turbulent conditions with a distinct size reduction of coal. Subsequently, the mixture is subjected to conventional drying and pressing without a binder at 75-120 MPa and 40-80°C. A conventional briquetting equipment can be used and the resulting briquettes are weather- and storage-stable.
Redesign of the plant and its prospects 98&H 048 Gostev, Y. A. Koks Khim., 1995, (9), 5-6. (In Russian). ’ Changes in a 60-year-old by-product coking plant are described. Selection criteria for the optimal chargin -dlschar98lo1047 ging batch operation of large coke ovens. 3. DetermBnatlon of bulging pressure in industrial coke ovens Sheptovitskii, M. S. et al. Koks Khim., 1995, (9), 14-18. (In Russian) Bulging pressure can be determined with the method develbped in this study. Maximum bulging pressure was shown to fall at the end of one-third of the coking period and is one to two orders of magnitude higher than the value used in designing the coke ovens. Decreasing the content of fat coals in blends and increasing the coking period are conducive to decreasing the bulging pressure. 98lOlO48
Use of noncoking and low-volatile8 coals in charge mixtures for ovens with cells of widths up to 850 mm
Colletta, A. and Giromella, G. Comm. Eur. Communities, [Rep.] EUR, 1997, (EUR 15228), 139 pp. (In Italian) The authors examine the i uence of the width of a coking cell in largescale coke ovens with respec“$ to use of non-coking coal and low-cost coal and the resulting coke quality. Enlargement of the coking cell results in (1) an increase of charge density with respect to a reference coal, (2) an increase in the distillation (liquid removal) time in the cell, (3) an attenuation of maximum gas internal pressure and improved final shrinkage of the charge, (4) an increase in coke and blast furnace coke productivity and (5) an increase of CSR (coke strength after reaction) values of the coke.
Vibrational pelletizing of fine-grained material 98l81055 Banaszewski, T. et al. Zesz. Nauk. Politech. Slask., Corn., 1996, 23, (l), 1325. (In Polish) Presents vibrational pelletizing of fine-grained material and a prototype vibrational pelletizer, which finds use for pelletizing of fly ashes, semi-cokes and coal slurry. Western Canadian coking coals--thermal 98iO1058 and coking quality
rheology
Leeder, W. R. et al. Ironmaking Conf. Proc., 1997, 56, 37-44. Coke strength prediction based on thermal rheology indicates that cretaceous coals would not make high quality coke; however, both types of coals produce coke suitable for the iron blast furnace. This paper discusses the reasons why western Canadian coals exhibit lower rheological values and how to predict the strength of coke produced from them.
Selection of a technology for partial granulation of
coal charges
Proshunin, Y. E. et al. Koks Khim., 1997, (l), 12-18. (In Russian) The coking process benefits from partial agglomeration of coal charges prior to coking and the best results are attained by agglomeiation of fine charge components. Coking by-products, such as phenol waters can be used as binders.
Steps towards a full capacity operation of the future 98lo1849 U3 coking unit at Sollac Dunkerque
Delannay, G. and Andre, J. Rev. MetaNCah. If Tech., 1996, 93, (6), 799805. The U3 unit of the coking plant at Sollac Dunkerque consists of the B6 battery of ovens and the B7 battery. This paper presents a study in order to determine the cycle times for the critical equipments which will be compatible with the future production level, with a safety margin of 15 to 20%.
Fuel and Energy Abstracb
March 1998 95