US3151041A - Coking method - Google Patents

Coking method Download PDF

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US3151041A
US3151041A US76086A US7608660A US3151041A US 3151041 A US3151041 A US 3151041A US 76086 A US76086 A US 76086A US 7608660 A US7608660 A US 7608660A US 3151041 A US3151041 A US 3151041A
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coke
briquettes
fines
coking
mixture
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Heinze Gerald
Reerink Wilhelm
Echterhoff Heinz
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/08—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form in the form of briquettes, lumps and the like
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
    • C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition

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  • the present invention relates to a coking method and particularly to a method according to which a mixture of carbonaceous briquettes and fine coal are coked together.
  • the result of the coking process of the present invention will be either a separable mixture of the coked briquettes and of coke breeze formed of the fines constituent, or coked bodes wherein each individual coked body will consist of portions of relatively high density and of portions of relatively low density which are integral with each other, as will be explained in more detail further below.
  • pitch or tar is used as binder for a mixture consisting of de-gassed non-coking coal and coking hard coal.
  • the present invention contemplates a method of producing coke briquettes, comprising the steps of forming a mixture of carbonaceous briquettes which are adapted to be coked without melting together when heated under exclusion of air to between 500 and 1300 C. and of low coking fines; coking said mixture so as to transform the briquettes and the fines into coke bodies adhering to each other but slightly; and separating the thus-formed briquettes from the coked fines so as to obtain coke breeze in addition to and separated from the coke briquettes.
  • a method of producing coke bodies of varying density comprising the steps of forming a mixture of carbonaceous briquettes which are adapted to be coked without melting together when heated under exclusion of air to be between 500 and 1300" C. and of strongly coking bituminous fines, and coking the mixture so as to transform the briquettes and the bituminous fines into coherent coked bodies each of which including portions of relatively high density and integral therewith portions of relatively low density.
  • the coke briquettes which are formed during the process of the present invention are substantially of the same size and shape as the briquettes which form one constituent of the mixture which is subjected to coking.
  • the slight difference in size and shape of the finished coke briquettes is due to a slight shrinkage caused by the escape of volatile constituents.
  • a slight baking together of the briquettes and of the surrounding coke which has been formed of the fines does not cause any difliculties and in fact is desirable because it facilitates the pushing out of the coke from the coke oven.
  • Very slight mechanical stress, for instance dressing by passing through a screening device generally will suifice for separating the coke mixture into coke briquettes and coke breeze. If necessary, this separation can be carried out by passing the mass leaving the coke oven through a coarse grinding impact grinder.
  • the choice of suitable fines and briquettes will primarily be determined by the coking properties of these ingredients.
  • the briquettes which are to be subjected to the above described coking process should be formed of non-coking coal, oxidized coal or even of coke. Only slightlyjbakingcoal may also be used or a mixture of non-baking coal with slightly or considerably baking or coking coals may be used as the material for forming the briquettes.
  • the briquettes which are used according to the above described process may be formed of anthracite and lean coals of up to 14% volatile constituents or of coals rich in volatile constituents, preferably open-burning coals with more than 40% volatile constituents.
  • the briquettes may also be formed of short-flaming or sernibituminous coal with between 14 and 18%v volatile constituents provided that such 'coal is only slightly coking or, if not, mixed with other slightly ornot at all coking coals.
  • substantially all carbonaceous or coal briquettes may be used as discussed above, provided that upon heating of suchbbriquettes under the exclusion of air to a temperature of between 500 and 1300 .C., the briquettes will not melt together.
  • the briquettes which are to be coked according to the present invention may contain any desired binding agent, including water solublebinding agents.
  • the second constituent of the mixture which is to be coked according to the present invention i.e., the fines which preferably willpossess aparticle size of up to 20 generally will be chosen from coking or slightly coking hard coals with between 14% and preferably between 18% and 25% or 28% volatile constituents, since a mixture of such fines with the above described briquettes will cause formation of a coherent Coke cake which can be easily pressed out of thisoven and which, on the other hand can be easily separated into coke briquettes and coke breeze.
  • TEST I Cylindrical briquettes are produced of coal and tar, each having a diameter of about mm. and a height of between about 40 and 50mm. These briquettes are inserted into a crucible made of heat resistant sheet metal and having an inner diameter which is slightly greater than the diameter of the briquettes. The height of the crucible is about mm.
  • the fines which are to be tested are then poured onto the briquette in the crucible. These fines may be a mixture of fines of different qualities.
  • the crucible is filled in this manner nearly to but not completely to its upper rim in such a manner that the upper face of the layer of fines will be about 1 cm. below the upper rim of the crucible.
  • the cover is then placed On the crucible and the same is embedded in a mass of pulverulent coke having a particular size of less than 5 mm. located in a considerably larger crucible.
  • the larger crucible with the smaller crucible therein is now placed into an electrically heated furnace and heated therein to a temperature of 1000 C. in such a manner that the increase in the temperature equals about 1 C. per minute. Thereafter, the crucibles and the contents thereof are allowed to cool and the coke formed in this manner is then tested as follows:
  • the fines or fines mixture are suitable for use in the present method of simultaneously producing coke briquettes and coke breeze.
  • the coke formed of the fines is not easily and without application of substantial force separated from the coke briquette, then it will be necessary to use less-coking fines or to mix coke breeze to the fines or to otherwise reduce the coking characteristics of the mixture of'fines, until repetition of the above described test gives the desired result.
  • the granulation of the fines depends to some extent on the size of 'the briquettes with which the fines are to be mixed.
  • the particle size of the fines will be up to about 5 mm. when the same is to be coked together with commercial egg-shaped briquettes having diameters of between about 50 and 80 mm.
  • With increasing size of the briquettes it is also possible to use fines of larger particle size or fines containing a larger percentage of particles of larger size.
  • fines of relatively small particle size With diminishing size of the briquettes it is also desirable to use fines of relatively small particle size.
  • the size of the fines particles is adjusted to the size of the briquettes primarily in order to obtain best possible utilization of the coke oven.
  • a substantially complete filling of the .interspaces between the briquettes with fines particles will be achieved.
  • the foregoing, however, is not to be understood as a limitation of the present invention to specific sizes or size relationships of briquetes and fines. It is also possible to form a mixture of briquetes of varying sizes and of fines of varying particle sizes and composition and to coke the thus-formed mixture in accordance with the present invention.
  • the present invention it is preferred according to the present invention to fill the interspaces between the briquettes by first intro- ,ducingthe briquettes into the coke'oven and thereafter allowing the fines to flow or trickle through the inter plus about 8% spaces of the mass of briquettes. It is also possible to form in similar manner the mixture of briquettes and fines in a hopper rather than in the coke oven and to introduce the completed mixture of briquettes and fines into the coke oven. If as coking oven a horizontal by product oven is to be used, then the hopper or the like may be adapted to serve as hopper car for introducing the mixture into the coke oven.
  • the coked end product will be easily divided into briquetted coke and coke breeze.
  • the coke breeze generally can be separated from the briquettes without using special mechanical force, simply by passing the mass over a screen of suitable mesh width so that the briquettes will not fall through the openings in the screen.
  • Briquetted coke or coke briquettes can be advantageously used for many purposes, for instance in shaft lime kilns, cupola furnaces and blast furnaces.
  • coke briquettes containing between 1 and or preferably between 2 and 6% of volatile constituents since such not completely de-gassed coke briquettes are also eminently suitable for home heating purposes.
  • the desired incomplete coking is accomplished without difficulty either by reducing the coking time or by reducing the coking temperature to between 500 and 900 C.
  • briquettes which were formed of coke plus about 12% tar; anthracite plus about 10% tar; lean coal containing up to about 14% volatile constituents tar; slightly coking bituminous coals containing about 14%-18% volatile constituents plus about 5% tar; open-burning coal with more than 40% Volatile 6 constituents plus about 7% tar; or, coking coals together with coke or anthracite or the like plus 7% tar.
  • Anthracite and openburning coals are not well suited as the fines constituents for the reason that these last named coal types generally will not form a coherent coke cake.
  • the fines should be of a type which will produce a soft, easily comminutable coke and of not too strong coking characteristics.
  • Example 1 Lean coal containing 13% of volatile constituents and having a particle size of up to 5 mm. is mixed with 7% tar having a softening point of 66 C. (according to Kraemer-Sarnow) and the thus formed mixture is compressed into egg briquettes and placed into a hopper car. A mixture consisting of equal parts of coke breeze having a particle size of up to 5 mm. and open burning coal containing 32% of volatile constituents and also having a particle size of up to 5 mm. is then added to the briquettes and allowed to flow into the in'terspaces therebetween so as to substantially fill the same.
  • Example II Coke breeze such as is obtained according to the method of Example I is compressed together with 12% tar and 3% coal tar oil into elliptic briquettes and the thus formed briquettes are introduced into the coke oven. Thereafter, a bituminous coal containing 24% of volatile constituents and having a particle size of up to 10 mm. is introduced from above into the coke oven and allowed to flow down so as to fill the interstices between the previously introduced briquettes. After coking for 20 hours at 1250" C., the thus formed coke cake is pressed out of the coke oven in conventional manner, extinguished and passed over a vibrating screen. In this manner, ap proximately by weight of coke briquettes and 35% by weight of coke breeze are obtained.
  • Example III A mixture consisting of equal parts by weight of subbituminous coal containing 14% volatile constituents and anthracite containing 6% volatile constituents is pressed with 8% tar into cubes having an edge length of 100 mm. The thus formed briquettes are then mixed with one-half of their weight of a mixture consisting of anthracite and 30% of coking coal containing 20% volatile constituents which mixture has an average par ticle size of between 1 and 8 mm. Upon coking for 22 hours at 1000 C. a coke cake is obtained which is conventionally removed from the coke oven, extinguished and passed over a vibrating screen. 65 by weight of coke briquettes and 35% by weight of coke breeze are thus obtained.
  • Example IV A non-coking open burning coal containing 42% of volatile constituents is mixed iwth 7% of 50% sulfite waste liquor and 7% of hard pitch having a softening point of 155 C. according to Kraemer-Sarnow and the mixture is pressed into egg-shaped briquettes.
  • the thus formed briquettes are mixed with 50% 'of their own weight of a mixture consisting of 68% of a non-coking open burning coal and 32% of a slightly coking open burning coal.
  • the entire mixture is coked at 1200 C. for 24 hours and then removed from the coke oven and extinguished in conventional manner. After passing the thus formed coke mass over. a vibrating screen, the same is separated into about 65% of coke briquettes and 35% of coke breeze.
  • Example V A finely ground slightly coking coal having 15% of volatile constituents is compressed at 3000 atmospheres into cylindrically shaped briquettes.
  • the thus formed briquettes are then mixed with 50% of their own weight of a mixture consisting of 50% coke breeze and 50% of a coking coal containing 29% volatile constituents.
  • the thus formed mixture is then coked for 18 hours at 900 C., removed from'the coke oven, and extinguished and passed over a Vibrating screen. 65% of coke briquettes and 35% of coke breeze are obtained.
  • a coke is produced the individual pieces of which consist of integral portions some of which have an apparent density of between about 0.7 and 1.1 and others of between about 1.1 and 1.5.
  • This novel type of coke is produced according to the present invention by coking a mixture of bituminous coal and coal briquettes which when coked alone would only superficially or not at all melt together.
  • a mixture of bituminous coal and coal briquettes which when coked alone would only superficially or not at all melt together.
  • the cokes pieces formed in this manner will possess'for instance a core portion of greater density than the density of the coke portion surrounding the core.
  • the process can be controlled so that substantially each piece of coke produced thereby consists of portions of higher and portions of lower apparent density, however, it is also possible depending on the degree of admixture of bituminous coal to the coal briquettes, to obtain a coke which also includes coke briquettes which are free of the-adherence of any coke originating from the admixture of the bituminous'coal. Similarly, it is not necessarily so that the briquette portion of the composite coke piece will be found in the center of the coke piece. It is also possible that such briquette coke portion is only partially covered with coke originating from bituminous coal portion.
  • the coke piece will break and examination of the inner surfaces exposed by such fracture of the entire coke piece should show that these fracture surfaces are not identical with the initial boundary surface between the briquette and the fines.
  • the surface exposed by fracture of the coke block should run at an angle to the initial boundary face. In this manner, it can be easily determined that the coke formed of the briquette and the coke formed of the fines have been firmly bound to each other so as to form an'integral coke body comprising portions the density of which is controlled by the properties of the coked briquette and portions the density of which is controlled by the properties of the coked fines. If the desired result is not achieved in such tests, then it will become necessary to suitably change the composition of the fines, primarily in the direction of increasing the coking properties thereof.
  • the dimension of the coal briquettes which form part of the mixture which is subjected to coking according to the present invention will depend on the dimensions of the coke oven and-also on the required size of the finally obtained coke pieces.
  • briquettes of the size of conventional egg briquettes i.e., having diameters of between about 50 and mrn.
  • the present invention is not limited to the use of briquettes of any given size or of fines of any given particle size. It is also possible to coke in accordance with the last discussed embodiment of the present invention mixtures of briquettes and fines wherein briquettes and/ or fines include pieces of varying dimensions.
  • the proportion of briquettes in the mixture which is to be coked according to the last discussed embodiment of the present invention will depend on the final use of the thus produced coke. For instance, for use as blast furnace coke it will be advantageous to use between about 5 and 30% by weight of briquettes mixed with between and 70% of fines. On the other hand, for use in cupola furnaces, preferably between 30 and 50% by weight of briquettes will be mixed with between 70 and 50% by weight-of fines.
  • the present invention will also serve to solve the problem of using non-coking'or'only slightly coking coals in the production'of coke. Furthermore, thelast discussed embodiment will also permit to incorporate the relatively'low coking constituents into the briquettes and thereby to retain only high cooking fines for the fines portion of the coking mixture. By proceeding in this manner, a greater proportion of low coking or non-coking coal can be introduced into the coke oven than was hereto possible.
  • the zones or portions of varying apparent density in the individual coke pieces produced according to the last discussed embodiment of the present invention are immediately apparent for instance in microphotographs of polished coke surfaces made of coke pieces produced as described hereinabove. For instance, it may be seen that the relatively dense portion of the coke piece which originated from the briquette will have a relatively low volume such as about 30% and a higher apparent density of about 1.4 while integral therewith and directly adjacent thereto, portions will be found which originated from the fines and which possess a pore volume of about 50% and a corresponding low apparent density of about 0.9.
  • Example VI Lean coal containing about 13% of volatile constituents is compressed into nut-sized briquettes and is then mixed with 4 times its own weight of coking fines containing 20% of volatile constituents. The thus formed mixture is then coked for 24 hours at 1250 C. and thereafter removed from the coke oven and extinguished in conventional manner.
  • the thus produced coke pieces will consist of portions having an apparent density of 0.7 to 0.9 and integral therewith of portions having an apparent density of between 1.3 and 1.5.
  • Example VII A mixture consisting of 78% lean coal containing 12% volatile constituents, 15% fat coal containing 22% volatile constituents and 7% tar is compressed into egg briquettes and then mixed with 6 times its weight of fat coal containing 26% volatile constituents. The thus formed mixture is then poured into a coking chamber and is coked for 24 hours at a temperature of 1000 C. The coke pieces resulting therefrom are similar to those obtained according to Example VI.
  • Example VIII Anthracite containing 8% volatile constituents is mixed with 10% tar and then compressed into egg briquettes. The thus formed briquettes are then mixed with twice their own weight of a highly coking coal containing 27% of volatile constituents. The thus formed mixture is then introduced into the coke oven and coked for 24 hours at 1150 C.
  • the coke pieces obtained therefrom possess integral portions of varying density and are particularly suitable for use in the operation of cupola furnaces.
  • Example IX Finely ground fat coal containing 22% volatile constituents is compressed at a pressure of 3000 atmospheres into cylindrical briquettes and the thus formed briquettes are then mixed with times their own weight of fat fines containing 26% of volatile constituents. The mixture is coked for 22 hours at a temperature of 1150 C. and it will be found that the resulting coke pieces possess integral portions of varying density substantially like those described in connection with Example VI.
  • the drawing shows a microphotograph of a piece of coke produced in accordance with Example VI. The areas of greater and lesser density are readily apparent.
  • a method of producing coke briquettes comprising the steps of forming a mixture of carbonaceous briquettes which are adapted to be coked without melting together when heated under exclusion of air to between 500 and 1300 C. and of low baking fine hard coal; coking said mixture so as to transform said briquettes and said fines into coke bodies adhering to each other but. slightly; and separating the thus-formed coked briquettes from the coked fines so as to obtain coked breeze in addition to and separated from said coke briquettes.
  • a method of producing coke briquettes comprising the steps of forming a mixture of binder-containing coal briquettes which are adapted to be coked without melting together when heated under exclusion of air to between 500" and 1300 C. and of low baking fine hard coal; coking said mixture so as to transform said briquettes and said fines into coke bodies adhering to each other but slightly; and mechanically separating the thus forming coked briquettes from the coked fines so as to obtain coke breeze in addition to and separated from said coke briquettes.
  • a method of producing coke briquettes comprising the steps of forming a mixture of carbonaceous briquettes which are adapted to be coked without melting together when heated under exclusion of air to between 500 and 1300 C. and of low baking fine fat coal containing between 18 and 28 percent of volatile constituents; coking said mixture so as to transform said briquettes and said fines into coke bodies adhering to each other but slightly; and separating the thus-formed coked briquettes from the coked fines so as to obtain coke breeze in addition to and separated from said coke briquettes.
  • a method of producing coke briquettes comprising the steps of embedding in a horizontal by-product oven coal briquettes which are adapted to be coked without melting together when heated under exclusion of air to between 500 and 1300 C. in low baking fine hard coal; coking said mixture so as to transform said briquettes and said fines into coke bodies adhering to each other but slightly; and mechanically separating the thus-formed coked briquettes from the coked fines so as to obtain coke breeze in addition to and separated from said coke briquettes.
  • a method of producing coke briquettes comprising the steps of forming a mixture of carbonaceous briquettes which are adapted to be coked Without melting together when heated under exclusion of air to between 500 and 1300 C. and of low baking fine hard coal, the quantity of said fines being so chosen as to be substantially sufiicient to fill the interstices between said cabonaceous briquettes; coking said mixture so as to transform said briquettes and said fines into coke bodies adhering to each other but slightly; and separating the thus-formed coked briquettes from the coked fines so as to obtain coke breeze in addition to and separated from said coke briquettes.
  • a method of producing coke bodies of varying density comprising the steps of forming a mixture of carbonaceous briquettes which are adapted to be coked without melting together when heated under exclusion of air to'be between 500 and 1300 C. and of strongly baking bituminous fines; and coking said mixture so as to transform said briquettes and said bituminous fines into coherent coked bodies each of which including portions of relatively high density and integral therewith portions of relatively low density.
  • a method of producing coke bodies of varying density comprising the steps of forming a mixture of carbonaceous briquettes which are adapted to be coked without melting together when heated under exclusion of air to be between 500* and 1300 C. and of strongly baking bituminous fines; colgingsaid mixture so as to transform said briquettes and said bituminous fines into a coked body including portions of relatively high density and integral therewith portions of relatively low density; and subdividing said coked body so as to obtain a plurality of smaller coked bodies substantially each of which comprises integral portions of relatively high and relatively low density.
  • a method of producing coke bodies of varying density adapted for use in blast furnace operations compriswhich are adapted to be coked without melting together and 5 percent by weight of carbonaceous briquettes which are adapted to be coked without melting together when heated under exclusion of air to be between 500 and 1300 C. and of between about 70 and 95 percent by weight of strongly baking bituminous fines; and coking said mixture soas to transform said briquettes and said bituminous fines into coherent coked bodies each of which including portions of relatively high density and integral therewithv portions .of relatively low density.
  • a method of producing coke bodies of varying density adapted for use in cupola furnace operation comprising the steps of forming a mixture ofbetween about and percent by weight of carbonaceous briquettes which are adapted to be col zed without meling together when heated under exclusion of air to be between 500 and 1300 C. and of between about and 50 percent by weight of strongly bakingbituminous fines; and coking said mixture so as to transform said briquettes and said bituminous fines into coherent coked bodies each of which including portions of relatively high density and integral therewith portions of relatively low density.
  • a method of producing coke comprising the steps of forming a mixture of carbonaceous briquettes which are adapted to be coked without melting together when heated under exclusionof air to between 5 00 and 1300 C., and of fine hard coal; and coking the. thus, formed mixture so as to transform said briquettes and said coal into coke.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
US76086A 1959-11-28 1960-11-25 Coking method Expired - Lifetime US3151041A (en)

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DEB55716A DE1177602B (de) 1959-11-28 1959-11-28 Verfahren zur Vermeidung des Festsetzens oder Verklemmens von Formkoks in Horizontalkokskammeroefen

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LU (1) LU39462A1 (es)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883399A (en) * 1971-06-17 1975-05-13 Sumitomo Metal Ind Charging coke oven blended coal and an overlay of briquettes
US4024022A (en) * 1974-12-05 1977-05-17 Bergwerksverband Gmbh Method of inhibiting dust formation when feeding coal into coking chambers
US4055471A (en) * 1975-01-09 1977-10-25 Bergwerksverband Gmbh Method of restricting the formation of dust when feeding coal into coke ovens
US4105501A (en) * 1975-10-23 1978-08-08 Nippon Kokan Kabushiki Kaisha Method for producing metallurgical coke
US4142941A (en) * 1976-09-10 1979-03-06 Firma Carl Still Recklinghausen Method for producing blast furnace coke
CN103805218A (zh) * 2012-11-05 2014-05-21 塔塔钢铁有限公司 一种生产焦炭的方法
CN104194813A (zh) * 2014-09-04 2014-12-10 山东巨铭能源有限公司 一种焦炭的制备方法
CN104194816A (zh) * 2014-09-04 2014-12-10 山东巨铭能源有限公司 一种制备焦炭的方法
CN114088710A (zh) * 2021-11-19 2022-02-25 黑龙江建龙化工有限公司 一种判断冶金焦不熔融物的来源的工艺方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022604A1 (de) * 1980-06-16 1982-01-14 Ruhrkohle Ag, 4300 Essen Verfahren zur herstellung von einsatzkohlenmischungen fuer kokereien
IT1177872B (it) * 1984-07-04 1987-08-26 Centro Speriment Metallurg Perfezionamento nella produzione di coke metallurgico

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US1824526A (en) * 1928-09-22 1931-09-22 Brassert & Co Method for making coke
GB389066A (en) * 1930-11-03 1933-03-09 Bamag Meguin Ag Process and apparatus for the production of high-grade semicoke briquettes from inferior fuels
US2353753A (en) * 1941-12-02 1944-07-18 Fuel Refining Corp New York Coking high volatile coal
US2600078A (en) * 1948-08-25 1952-06-10 Lummus Co Heat transfer pebble
US2907658A (en) * 1957-09-13 1959-10-06 Pfizer & Co C Animal feed composition and method of feeding said composition to animals

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DE539637C (de) * 1925-01-24 1931-11-28 Fritz Hofmann Dr Verfahren zur Erzeugung von festem Koks
GB289932A (en) * 1927-01-31 1928-04-30 Rudolf Lessing Improvements in and relating to the heat treatment of briquettes
DE578628C (de) * 1927-07-26 1933-06-15 Emilie Gevers Orban Verfahren zum Schwelen von Briketten
FR1176762A (fr) * 1957-06-17 1959-04-15 Charbonnages De France Procédé de fabrication de coke à forte densité et coke en résultant

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Publication number Priority date Publication date Assignee Title
US1824526A (en) * 1928-09-22 1931-09-22 Brassert & Co Method for making coke
GB389066A (en) * 1930-11-03 1933-03-09 Bamag Meguin Ag Process and apparatus for the production of high-grade semicoke briquettes from inferior fuels
US2353753A (en) * 1941-12-02 1944-07-18 Fuel Refining Corp New York Coking high volatile coal
US2600078A (en) * 1948-08-25 1952-06-10 Lummus Co Heat transfer pebble
US2907658A (en) * 1957-09-13 1959-10-06 Pfizer & Co C Animal feed composition and method of feeding said composition to animals

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883399A (en) * 1971-06-17 1975-05-13 Sumitomo Metal Ind Charging coke oven blended coal and an overlay of briquettes
US4024022A (en) * 1974-12-05 1977-05-17 Bergwerksverband Gmbh Method of inhibiting dust formation when feeding coal into coking chambers
US4055471A (en) * 1975-01-09 1977-10-25 Bergwerksverband Gmbh Method of restricting the formation of dust when feeding coal into coke ovens
US4105501A (en) * 1975-10-23 1978-08-08 Nippon Kokan Kabushiki Kaisha Method for producing metallurgical coke
US4142941A (en) * 1976-09-10 1979-03-06 Firma Carl Still Recklinghausen Method for producing blast furnace coke
CN103805218A (zh) * 2012-11-05 2014-05-21 塔塔钢铁有限公司 一种生产焦炭的方法
CN103805218B (zh) * 2012-11-05 2018-06-08 塔塔钢铁有限公司 一种生产焦炭的方法
CN104194813A (zh) * 2014-09-04 2014-12-10 山东巨铭能源有限公司 一种焦炭的制备方法
CN104194816A (zh) * 2014-09-04 2014-12-10 山东巨铭能源有限公司 一种制备焦炭的方法
CN114088710A (zh) * 2021-11-19 2022-02-25 黑龙江建龙化工有限公司 一种判断冶金焦不熔融物的来源的工艺方法

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LU39462A1 (es) 1961-01-25
GB961210A (en) 1964-06-17
BE597549A (fr) 1961-05-29
DE1177602B (de) 1964-09-10

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