[PDF] Pretreatment of coking wastewater by an adsorption process …
ResultA new technique for pretreatment of coking wastewater is introduced based on the concept of circular economy. Coal is fed into a coking system after adsorption. This study validates the feasibility of using coking coal to adsorb organic pollutants in coking wastewater. The sorption kinetics and equilibrium sorption isotherms of …
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Coking Coal: Explained
ResultCoking Coal. Coking coal (or metallurgical coal) is a bituminous coal with a suitable quality that allows the production of metallurgical coke, or simply named coke. Coking coal has a higher carbon content than steam coal, as well as a lower level of sulphur, phosphorous and alkalis (World Coal Institute 2009).
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Detailed introduction of coke coking process
Result2. Coal blending: It is a process in which coal of different types of gas, fertilizer, coke and lean is prepared according to a certain proportion, and is naturally loaded into the coke oven from the top of the coke oven for coking. Generally, it is formulated as 25% gas coal, 15% fat coal, 10% lean coal, 50% …
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Processes | Free Full-Text | Study on Relationships …
ResultThe coking industry is an important basic energy and raw material industry, which connects coal, coke and steel industries and plays an important role in the industrial chain, economic …
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Coking Coal
ResultCoking coal is an essential input for production of iron and steel. The largest single use of coal in the steel industry is as a fuel for the blast furnace and for the production of metallurgical coke for reduction of iron ore or for injection with the …
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'Green steel': Swedish company ships first batch made without using coal
ResultIt aims to replace coking coal, traditionally needed for ore-based steel making, with renewable electricity and hydrogen. Hydrogen is a key part of the EU's plan to reach net zero greenhouse gas ...
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Coking behavior and mechanism of direct coal
Result1. Introduction. Direct coal liquefaction is a promising approach for producing clean liquid fuels and valuable chemicals. Noticeably, direct coal liquefaction residue (DCLR) is the main by-products which accounts over 30 wt% of raw coal [1], [2], [3], [4].One key problem in direct coal liquefaction process is the …
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Corex Process for Production of Iron – IspatGuru
ResultIn the Corex process around 45 % of the total energy input is used for ironmaking and the rest goes to export fuel gas. The hot metal produced has carbon and silicon contents similar to blast furnace hot metal. However, nearly all of the sulphur in the non-coking coal enters the slag and hot metal.
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Coal
ResultThe widespread use of kerosene reduced the use of coal oil in the 20th century. Coking coal is used in large-scale industrial processes. The coal is coked, a process of heating the rock in the absense of oxygen. This reduces the moisture content and makes it a more stable product. The steel industry relies on …
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A preliminary study on the quality evaluation of coking coal …
ResultThe viability of coking enterprises hinged on their economic benefits. Coal coking was a conventional chemical project, characterized by fixed process and industrial route. The expenses associated with coal blending accounted for>85% of the production costs incurred by the enterprise.
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Exergy analysis and optimization of coking process
ResultIn practical production of coking process, the coal charging ratio, heating gas ratio, moisture content of charging coal and coke pushing temperature are all adjustable design variables. Generally, the increase of moisture content can result in the prolonging of coking time and the increasing of energy consumption. …
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Flow diagram of coal to coal-tar-pitch process
ResultDetailed Description. Coal tar is a byproduct of the coking, liquefaction, or gasification of coal. Coal-tar pitch is the residue that remains after the distillation of coal tar. Coal tar and coal-tar pitch are used in coal-tar-based sealcoat products, although use of coal-tar pitch is more common than use of coal tar. Both coal tar …
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Chemistry and geology of coal: nature, composition, coking
ResultCoking. Coking coal is an essential raw material for the production of iron and steel. Coke is a solid carbonaceous residue formed from coking coal (a low-ash, low-sulphur bituminous coal, also known as metallurgical coal), which is used in make steel and other iron products [].Coke is produced by burning coal at …
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High coking coal prices provide glimpse into steelmaking's …
ResultHigher-priced coking coal is likely to affect the steel industry's transition to greener production methods as well as the value-based pricing of iron ore. Higher-priced coking coal increases the cost of producing steel via blast furnaces, both in absolute terms and relative to other routes. This typically leads to …
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Carbonization and coking of coal (Chapter 23)
ResultAll coals, regardless of whether they are caking or coking coals, leave a solid carbonaceous residue at the end of the carbonization process. Chars, if heat-treated to extreme temperatures, e.g. ≥2500 °C, do not form graphite, while cokes do. That is, chars are non-graphitizable, while cokes are graphitizable [A].
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Coal Processing Methods
ResultAt the present time, there is renewed interest in destroying these coking properties because a noncoking-sized coal is required for either dry-ash or slagging fixed-bed pressure gasification, and this method now seems to be the most economic process for the complete conversion of coal to synthesis gas and for …
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Kinetic modelling of coking coal fluidity development
ResultCoal plasticity is a phenomenon directly affecting the creation of coke structure. It is very much a time- and temperature-dependent transformation of the coal matrix, which allows changing the physical phase from solid to liquid-like and again into solid of different properties. The coking process, particularly in a plasticization …
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How does coke and coal play into steel making?
ResultCoke is used as a fuel and a reducing agent in melting iron ore. It is produced by baking coal until it becomes carbon by burning off impurities without burning up the coal itself. When coke is consumed it generates intense heat but little smoke, making it ideal for smelting iron and steel. Prior to the 1880's, steel was …
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Coking Coal | SpringerLink
ResultCoking Coal. Coking coal (Fig. 1) is the feed coal with certain caking property that can be coked under coking conditions and used to produce coke with certain quality. The coking coal is transformed from a large number of plant remains buried underground hundreds of millions of years ago after complex biochemical, …
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Understanding Coke Making in Byproduct Coke …
ResultThermal distillation (coking process) takes place in groups of ovens called coke oven battery. A battery consists of 20 to 100 adjacent ovens with common side walls made of high quality …
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Coking coal of the United States—Modern and historical coking coal …
ResultCoking coal, or metallurgical coal, has been produced in the United States for nearly 200 years. Coking coal is primarily used in the production of coke for use in the steel industry, and for other uses (for example, foundries, blacksmithing, heating buildings, and brewing). Currently, U.S. coking coal is produced in Alabama, Arkansas, …
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Coal & steel
ResultThe coking coal is crushed and washed. It is then ‘purified or ‘carbonised in a series of coke ovens, known as batteries, where the coking coal is heated to 1000-1100ºC in the absence of oxygen for 12-36 hours. During this process, by-products are removed, and coke is produced. Iron
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Devolatilization behaviour and pyrolysis kinetics of coking …
ResultCoking coal. Coal pyrolysis. Functional groups. Kinetics. In situ FTIR. 1. Introduction. Coking coal is the main raw material for coke production, which is …
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Technology of Producing Petroleum Coking Additives to Replace Coking Coal
ResultCoke chemical companies often have a deficit of coals of particularly valuable grades, the coking coals. This work studies the opportunity of producing petroleum coking additives using delayed coking during heavy petroleum residue processing. Experiments for the production of a carbon material were conducted …
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12.2 Coke Production
ResultThe blended coal mass is heated for 12 to 20 hours for metallurgical coke. Thermal energy from the walls of the coke chamber heats the coal mass by conduction from the sides to the middle of the coke chamber. During the coking process, the charge is in direct contact with the heated wall surfaces and develops into an aggregate …
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Coke Oven Emissions
ResultWorkers at coking plants and coal-tar production plants may be exposed to coke oven emissions. Occupational exposures can also occur among workers in the aluminum, steel, graphite, electrical, and construction industries. The primary routes of potential human exposure to coke oven emissions are inhalation …
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Chemicals from Coking Metallurgical Coal
ResultChemicals from Coking Metallurgical Coal. Most of the chemicals derived from coal come from by-products produced during the coking process. Coal is used to make coke to make steel. Coke gas (also called foul gas) contains coke tars, ammonia, and light oils. Tars are recovered and used to make tar derivatives. …
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steel production, coking coal
ResultThe coking process consists of heating coking coal to around 1000-1100ºC in the absence of oxygen to drive off the volatile compounds (pyrolysis). This process …
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Chemistry and geology of coal: nature, composition, coking
ResultCoking. Coking coal is an essential raw material for the production of iron and steel. Coke is a solid carbonaceous residue formed from …
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Technology of Producing Petroleum Coking Additives …
ResultThe petroleum coking additive produced instead of the typical petroleum coke under a milder temperature regime had the required quality indicators, particularly, the volatile-matter yield within the range from 15 to 25 wt %, to be used in metallurgical production for partial replacement of coking coals in the charge to produce …
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