1. A method of coking brown coal or the like comprising the following steps: 2. A method as defined in claim 1, wherein said charge is introduced into said coking apparatus downwardly at the upper portion thereof and said hot gas is introduced into said coking apparatus upwardly through a base thereof to create a fluidized bed containing said 5-25 percent of said charge and to cause said 75-95 ...
15-12-2016· A subsequent paper by the same group involved acid washing a Victorian brown coal (VBC) which, after hot briquetting and carbonization, gave strong material with low reactivity. However, the CO 2 surface area of these products was high (740 m 2 /g) and no comparisons were made with the reactivity of coke prepared under standard coking conditions from a conventional coking coal.
Attempts have been made to obtain a substitute for blast furnace (BF) coke from a Victorian brown coal mixed with a tar derived from brown coal under conditions sufficiently mild to be economical.
24-08-2014· brown coal fine coke Braunkohlenfeinkoks m
A Victorian brown coal (VBC) has been heated with strong aqueous KOH under severe conditions, neutralized with dilute H 2 SO 4 and then hot-briquetted with or without coking coal tar pitch as a binder, optionally air cured and finally carbonized. The final products were evaluated as a …
brown coal vacuum coke Prior art date 1970-05-19 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 Application number US00144803A Inventor W Wenzel F Franke R Jaeger
Attempts have been made to obtain a substitute for blast furnace (BF) coke from a Victorian brown coal mixed with a tar derived from brown coal under conditions sufficiently mild to be economical.
Abrasion-proof coke forms are produced from bituminous coal, brown coal, or peat in the form of briquets, by preheating the briquets, dehydrating or predrying them, carbonizing them and then cooling them in at least three separate stages in which the briquets are dehydrated indirectly by subjecting them to indirect temperature conditions, producing a temperature gradient in the briquets.
03-08-2021· Making Coke From Coal. Three different types of coal are best for blacksmithing because they can reach the temperatures necessary to forge steel. These are called lignite, bituminous, and anthracite coals. Lignite is the lowest rank of coal, also known as brown coal…
15-09-2016· The products obtained by carbonization of a mixture of hydrothermally dewatered acid washed Victorian brown coal and coking coal tar pitch, which had been briquetted at 150 or 230 °C and air cured were shown to approach blast furnace (BF) coke in many of their properties.
31-07-2021· Consequently for the production of special coke, of which the demand is satisfied at the present time by small size fractions of beehive coke or even blast furnace coke, it is necessary to use not only the plentiful coals but also the brown coals of the Kansk-Achinsk coalfield where mining is …
13-02-2021· From wikepedia: Lignite, often referred to as brown coal, is a soft, brown, combustible, sedimentary rock formed from naturally compressed peat. It is considered the lowest rank of coal due to its relatively low heat content. It has a carbon content around 20-35% percent. It is mined all around t...
Viele übersetzte Beispielsätze mit "brown coal coke" – Deutsch-Englisch Wörterbuch und Suchmaschine für Millionen von Deutsch-Übersetzungen.
Brown coal (lignite) or black coal (bituminous) can be used in the oven to make coke. While both take the same amount of time to process, a full stack of brown coal will only yield 8 coke, while an equal amount of black coal will yield 12 coke. To start the process, simply layer coal in the oven, ignite with a torch and close the coke oven door.
This heading also includes coke, coke breeze and semi-coke made from lignite/brown coal. 6. Gas coke: By-product of hard coal used for production of town gas in gas works. Gas coke is used for heating purposes. 7. Coal tar: A result of the destructive distillation of bituminous coal or of the low-temperature carbonisation of brown coal.
Commercial sales of coke, at $2.00 per wagonload, began at Walston late in 1884. By 1885, the R&PC&I operated 356 ovens at the site and produced a highly saleable grade of coke form coal mined at Walston and at nearby Beechtree. The coking coal was taken from what geologists call the lower Freeport coal bed, which averaged five feet in thickness.
This paper describes attempts to produce blast furnace coke from Victorian brown coals. The attempted method involves combining a coal-derived binder with the original brown coal or its commercial ...
This is the first time a carbonized product has been prepared from brown coal in good yield and of lower reactivity than brown coal char when compared with BF coke. However, the reactivity and surface area remain too high for the product to be used as a substitute for BF coke. KW - Blast furnace coke. KW - Brown coal. KW - Coke strength
05-10-2011· An attempt to produce blast furnace coke from Victorian brown coal. Fuel 2015, 148, 104-111. DOI: 10.1016/j.fuel.2015.01.098. Karnowo, Shinji Kudo, Aska Mori, Zayda Faizah Zahara, Koyo Norinaga, Jun-ichiro Hayashi. Modification of Reactivity and Strength of Formed Coke from Victorian Lignite by Leaching of Metallic Species.
Coke (coal), brown-coal tar pitch A carbon-containing residue from the carbonization of lignite tar pitch with a volatile content up to 10%. Composed primarily of carbon, it may contain varying amounts of ash, sulfur, volatile material and moisture.
Thus pressure resistant and large size coke from brown coal has been produced for instance from briquettes of which the material has been prepared by drying to a residual water content not exceeding 8% or by grinding such coal to grades of not more than .08 inch in diameter.
My invention has for its object to produce carbonization resistant briquettes from brown coal and from such briquettes to produce large sized and highly pressure-resistant coke without making it necessary to dry the brown coal to a residual water content not exceeding 8% or to grind it to an extreme degree of fineness or to submit it to any other special preparation before pressing.
Iron is usually produced from its ores using coke in a blast furnace (BF). Coke, a hard and macroporous carbon material, is produced from special coals (coking coals) and acts as fuel, smelting agent, and the permeable support for the charge to the BF. No material can completely replace coke in a BF. Coking coals are becoming harder (and more expensive) to obtain. Victorian brown coal (VBC) is ...
04-01-2017· The results of several attempts to develop processes for the utilization of high-volatile coking coals—with carbonaceous and noncarbonaceous additives and through continuous and controlled carbonization—and weakly and noncaking coals—both with and without binders—in the manufacture of metallurgical coke are discussed. The coke produced by these methods and with …
in Coal and Coke Analysis and Evaluation The following Standards are given for coal and coke as ... ISO 5073-1985 Brown coal and lignite – determination of humic acids. ISO 5074-1994 Hard coal – determination of Hardgrove grindability index. ISO 7404.4-1994 Methods for the petrographic
This heading also includes coke, coke breeze and semi-coke made from lignite/brown coal. 6. Gas coke: By-product of hard coal used for production of town gas in gas works. Gas coke is used for heating purposes. 7. Coal tar: A result of the destructive distillation of bituminous coal or of the low-temperature carbonisation of brown coal.
29-05-2018· Table 1. Comparative characteristics of semi-coke from different grades of coal and coke nut Table 2. World reserves of brown coal, billion tons Table 3. The world's largest producers of brown coal in 2008-2015, million tons Table 4. Volume of production and use of brown coal in Germany in 1989-2016, million tons Table 5.