US3883399A - Charging coke oven blended coal and an overlay of briquettes - Google Patents
Charging coke oven blended coal and an overlay of briquettes Download PDFInfo
- Publication number
- US3883399A US3883399A US262672A US26267272A US3883399A US 3883399 A US3883399 A US 3883399A US 262672 A US262672 A US 262672A US 26267272 A US26267272 A US 26267272A US 3883399 A US3883399 A US 3883399A
- Authority
- US
- United States
- Prior art keywords
- coal
- oven
- coke
- coking
- briquette
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- 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
Definitions
- coke method As one manner to make the metallurgical coke from non-coking coal, there is formed coke method.
- the non-coking coal is formed into briquette prior to high temperature carbonization.
- the high temperature carbonization of the coal briquette in this method cannot be done with the conventional coke oven, and a exclusive equipment for the carbonization of the coal briquette is required.
- the exclusive equipment which is presently available, economically inferior to the conventional coking oven.
- the coal briquette consisting of poor coking coal and soft coking coal is used as part of coking coal charging to the conventional cokeoven (as disclosed in Japanese patent publication No. 16484/1960).
- the caking material content in the coal briquette is set high (with the caking material index of 66 to 90 percent) to result in fusing of the coal briquette with the surrounding coking coal, so that no trace of briquette can be found in the product coke at all.
- 40 percent coal briquette are charged together with the usual coking coal into a A-ton experimental coking oven.
- the bulk density of the charging coal included the coal briquette (with 40 percent) is increased to 0.78 ton per cubic meter compared to 0.72 to 0.74 ton per cubic meter in case of the 100 percent usual coking coal. Therefore, in the operation of the practical coke oven, the discharge of the product from the coke oven get 20 percent or more of the total charge into the conventional coke oven. Also, it is essentially different from the above method (disclosed in the Japanese Pat. publication No. l6484/l 960) in that a formed coke can produce with the conventional coke oven.
- An object of the invention is to provide a carbonization method, in which high temperature carbonization of coal briquette and usual coking coal can be done separately in the same conventional coke oven without requiring any exclusive coking equipment and without causing fusion of the briquette one with another or the briquette with the usual coking coal.
- the usual coking coal and the coal briquette charged into the coke oven may be carbonized at the same time.
- the usual coking coal which consist of 20 to 60 percent of hard coking coal, 0 to percent of soft coking coal and 0 to percent of semi-hard coal so that its coke strength index (l5 mm index in accordance with JIS, K-2l5l- 1962) is 91 or greater, is charged in a range between 70 and 94 percent of the effective height of the conventional coke oven, and then the coal briquette coal which mainly is consisted of the poor coking coal and the non-coking coal or non-caking carbonacious substance such as petroleum coke is charged in a range between 6 to 30 percent of the effective oven height for high temperature coking to obtain the metallurgical coke.
- EXAMPLE This example used a standard experimental coke oven with a charging capacity of 25 kg.
- the quality of coals used in this example are as shown in Table l and Table 2 below:
- the blended coal shown in Table 1 is usual for producing blast furnace coke.
- the blend for the coal briquette coal shown in Table 2 consists of the poor coking coal (with 3.2 percent inherent moisture. l 1.8 percent ash, 32.3 percent volatile matter, 52.7 percent fixed carbon and free swelling index of l and the petroleum coke having no caking property.
- the coke produced from this poor coking coal is inadequate as blast furnace coke since the coke strength index is very low, being 30.9; (the mm index according to .115 is 30.9 and the stability factor according to-ASTM D 294-64 is 7.5).
- the raw materials for coal briquette mixed according to the proportion of Table 2 was pulverized less than 3 mm., and fed on to a kneader.
- the coal tar pitch in the mixture is method by the heat of hot steam blown into the kneader and the mixture is kneaded sufficiently, and then the mixture was supplied to the briquetting machine, which is a double roll type and has a briquette pressure of about 950 kg/cm (line pressure).
- the coal briquette produced in the aforementioned way has dimensions of 28 mm X 19 mm and a weight of 10.1 grs.
- 184 kg of the blended coal shown in Table l was first charged uniformly within the carbonization chamber of the experimental coke oven and then 45 kg of the coal briquette produced under the above conditions charged on the blended coal. Then, the charge was carbonized with a flue temperature of 1,160C and a coking time of 15 hours and 46 minutes. After carbonization, the hot coke was discharged out of the oven by a pusher and quenched with water.
- the coking coal In the coke oven usually used in the iron making industry, the coking coal is charged into the oven from a charging hole at the top of the carbonization chamber, and after the carbonization it is mechanically pushed out of the oven in the horizontal direction. Also, the coking coal charged into the coke oven should have good caking property and should be carbonized in the form of masses.
- coal briquette chiefly consisting of poor coking coal and non-caking material like that shown in FIG. 2 is solely charged into the coking oven, at the time of pushing the coke out of the oven the forward component of force exerted t0 the coke (formed coke) from the pusher is reduced, so that the pushing eventually becomes impossible.
- FIG. 4 lists of a galvanometer of pusher in pushing tests carried out by using a industrial coke oven with an oven height of 4 m, which the effete dimension of carbonization chamber is 3.67 m in height, 13.68 m in length and 0.70 m in width, and effective inner volume of 19.2 m (charging capacity of 13.4 tons per oven).
- the usual blended coal and the coal briquette according to the invention charged into the oven chamber, and then the charged material carbonized at a flue temperature of 1,245C for a coking time of 14 hours and 06 minutes.
- Table 4 Electric current at pusher Kind of charged coal to 72 amperes As is apparent from Table 4, the electric current at the pushe is lowest in case of the sole usual blended coal. The electric current is slightly increased in case of percent, that is, 12 tons of the usual blended coal and 10 percent, that is, 1.4 tons of the coal briquette. In this case, however, the pushing operation itself was found to be the same as in the above case. In case of 30 percent, that is, 4 tons of the coal briquette the electric current at the pusher is further increased. In this case, due to increased resistance of the coke within the oven the pusher stopped several times during the pushing operation, but the discharging of the coke was possible.
- the proportion of the coal briquette to be charged is restricted to be 30 percent or less.
- the lower limit of the proportion of the coal briquette to be charged is made to be 6 percent, because with less than 6 percent of the proportion of the poor coking coal wide reduction of the coke cost cannot be expected.
- the usual coking coal is charged in a range between 70 and 94 percent of the effective height of the coke oven while the coal briquette is charged in a range between 6 and 30 percent of the effective oven height on the usual coking coal for separately carbonizing the usual coking coal and coal briquette in the same coke oven by the usual high temperature carbonization method.
- coal briquette on the usual coking coal either slightly fuses or does not fuses at all depending upon the bituminous substance content (with less bituminous substance content the fusion being weaker). Therefore, when the oven lid is removed at the time of pushing out the coke it is possible that coal briquette in contact ization thereof;
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP46043510A JPS515401B1 (fr) | 1971-06-17 | 1971-06-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3883399A true US3883399A (en) | 1975-05-13 |
Family
ID=12665718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US262672A Expired - Lifetime US3883399A (en) | 1971-06-17 | 1972-06-14 | Charging coke oven blended coal and an overlay of briquettes |
Country Status (6)
Country | Link |
---|---|
US (1) | US3883399A (fr) |
JP (1) | JPS515401B1 (fr) |
FR (1) | FR2142083B1 (fr) |
GB (1) | GB1389268A (fr) |
IT (1) | IT959824B (fr) |
ZA (1) | ZA724037B (fr) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4100031A (en) * | 1976-04-30 | 1978-07-11 | Sumikin Coke Company Limited | Process for preparing blast furnace cokes |
US4105501A (en) * | 1975-10-23 | 1978-08-08 | Nippon Kokan Kabushiki Kaisha | Method for producing metallurgical coke |
US4110169A (en) * | 1975-04-01 | 1978-08-29 | Nippon Kokan Kabushiki Kaisha | Method for manufacturing high-strength formed coke in slight mutual agglomeration using horizontal type coke oven battery |
US4156595A (en) * | 1978-06-08 | 1979-05-29 | Peabody Coal Company | Formcoke process and apparatus |
US4197160A (en) * | 1977-03-28 | 1980-04-08 | Houilleres du Bassin du Nord et, Due Pas-de-Calais | Process by means of which moulded coke can be obtained from non-cokable coals |
US4259083A (en) * | 1979-03-22 | 1981-03-31 | Alberta Research Council | Production of metallurgical coke from oxidized caking coal |
US4318779A (en) * | 1979-05-14 | 1982-03-09 | Sumikin Coke Company Ltd. | Method of manufacture of blast furnace cokes containing substantial amounts of low grade coals |
US4370201A (en) * | 1981-06-23 | 1983-01-25 | United States Steel Corporation | Process for maintaining coal proportions in a coal blend |
US4385962A (en) * | 1980-06-16 | 1983-05-31 | Ruhrkohle Aktiengesellschaft | Method for the production of coke |
CN113845932A (zh) * | 2021-08-05 | 2021-12-28 | 包头钢铁(集团)有限责任公司 | 一种山西瘦焦煤配煤炼焦的方法 |
CN115093868A (zh) * | 2022-03-22 | 2022-09-23 | 中冶焦耐(大连)工程技术公司 | 一种富氢高炉用高反应性高强度焦炭及其制备方法 |
RU2787869C1 (ru) * | 2022-02-09 | 2023-01-13 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Угольный брикет и способ его производства |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5213814U (fr) * | 1975-07-18 | 1977-01-31 | ||
JPS53105710U (fr) * | 1977-01-29 | 1978-08-25 | ||
JPS5449905U (fr) * | 1977-09-13 | 1979-04-06 | ||
JP5290046B2 (ja) | 2009-05-14 | 2013-09-18 | リンテック株式会社 | 防眩性ハードコートフィルム及びそれを用いた偏光板 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US926702A (en) * | 1907-06-19 | 1909-06-29 | Ernst Georg Bernhard Koerting | Apparatus for charging gas-retorts. |
US1030333A (en) * | 1911-12-04 | 1912-06-25 | United Gas Improvement Co | Distillation of bituminous coal and the like. |
US1918162A (en) * | 1928-11-01 | 1933-07-11 | Lehigh Coal And Navigation Com | Method of carbonizing briquettes |
US3151041A (en) * | 1959-11-28 | 1964-09-29 | Heinze Gerald | Coking method |
US3441480A (en) * | 1968-04-03 | 1969-04-29 | Mcdowell Wellman Eng Co | Method for progressive heating of solid particulate materials |
-
1971
- 1971-06-17 JP JP46043510A patent/JPS515401B1/ja active Pending
-
1972
- 1972-06-13 ZA ZA724037A patent/ZA724037B/xx unknown
- 1972-06-14 US US262672A patent/US3883399A/en not_active Expired - Lifetime
- 1972-06-15 GB GB2813772A patent/GB1389268A/en not_active Expired
- 1972-06-16 IT IT25785/72A patent/IT959824B/it active
- 1972-06-19 FR FR7222050A patent/FR2142083B1/fr not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US926702A (en) * | 1907-06-19 | 1909-06-29 | Ernst Georg Bernhard Koerting | Apparatus for charging gas-retorts. |
US1030333A (en) * | 1911-12-04 | 1912-06-25 | United Gas Improvement Co | Distillation of bituminous coal and the like. |
US1918162A (en) * | 1928-11-01 | 1933-07-11 | Lehigh Coal And Navigation Com | Method of carbonizing briquettes |
US3151041A (en) * | 1959-11-28 | 1964-09-29 | Heinze Gerald | Coking method |
US3441480A (en) * | 1968-04-03 | 1969-04-29 | Mcdowell Wellman Eng Co | Method for progressive heating of solid particulate materials |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4110169A (en) * | 1975-04-01 | 1978-08-29 | Nippon Kokan Kabushiki Kaisha | Method for manufacturing high-strength formed coke in slight mutual agglomeration using horizontal type coke oven battery |
US4105501A (en) * | 1975-10-23 | 1978-08-08 | Nippon Kokan Kabushiki Kaisha | Method for producing metallurgical coke |
US4100031A (en) * | 1976-04-30 | 1978-07-11 | Sumikin Coke Company Limited | Process for preparing blast furnace cokes |
US4197160A (en) * | 1977-03-28 | 1980-04-08 | Houilleres du Bassin du Nord et, Due Pas-de-Calais | Process by means of which moulded coke can be obtained from non-cokable coals |
US4156595A (en) * | 1978-06-08 | 1979-05-29 | Peabody Coal Company | Formcoke process and apparatus |
US4259083A (en) * | 1979-03-22 | 1981-03-31 | Alberta Research Council | Production of metallurgical coke from oxidized caking coal |
US4318779A (en) * | 1979-05-14 | 1982-03-09 | Sumikin Coke Company Ltd. | Method of manufacture of blast furnace cokes containing substantial amounts of low grade coals |
US4385962A (en) * | 1980-06-16 | 1983-05-31 | Ruhrkohle Aktiengesellschaft | Method for the production of coke |
US4370201A (en) * | 1981-06-23 | 1983-01-25 | United States Steel Corporation | Process for maintaining coal proportions in a coal blend |
CN113845932A (zh) * | 2021-08-05 | 2021-12-28 | 包头钢铁(集团)有限责任公司 | 一种山西瘦焦煤配煤炼焦的方法 |
RU2787869C1 (ru) * | 2022-02-09 | 2023-01-13 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Угольный брикет и способ его производства |
CN115093868A (zh) * | 2022-03-22 | 2022-09-23 | 中冶焦耐(大连)工程技术公司 | 一种富氢高炉用高反应性高强度焦炭及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
ZA724037B (en) | 1973-06-27 |
FR2142083A1 (fr) | 1973-01-26 |
GB1389268A (en) | 1975-04-03 |
IT959824B (it) | 1973-11-10 |
JPS515401B1 (fr) | 1976-02-19 |
FR2142083B1 (fr) | 1977-12-16 |
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