increase in coke quality is obtained. In comparison with the semi-coke, the addition of small coke with the same grain size has a more powerful degreasing effect. The coke's grain size also has an influence on the degreasing capability in the sense that the finer the coke the more degreasing it becomes, more active. Utilizing small coke

Superior quality coke is essential in the metallurgical industry. However, the coking coal source is limited. The biomass or breeze could be blended into the coking coal to produce …

Metallurgical coke is the macroporous solid carbon material which is produced by carbonization of coking coals of specific rank or of ... Precarbonization technologies—The precarbonization technologies which can be considered for improving coke quality are selective crushing, coal preheating, partial briquetting, stamp charging, and solvent ...

Crushing metallurgical coke requires specialized equipment such as crushers, hammermills, or ball mills. The material must be crushed to a desired size before it can be used in the manufacturing ...

Ferro-coke, as a new burden of blast furnace (BF), can not only greatly reduce the energy consumption and CO2 emission, but also promote the resource utilization by using the low-quality iron ore and low-grade coal. However, the strength of ferro-coke decreased with the increasing amount of iron ore powder. In order to maintain the strength of ferro-coke while …

Metallurgical coke is a porous, fissured, silver-black solid and is an important part of the ironmaking process since it provides the carbon (C) and heat required to chemically reduce iron burden in the blast furnace (BF) to produce hot metal (HM). It is a porous C material with high strength produced by carbonization of coals of specific rank ...

The crushing strength of ferro-coke with different amounts of iron ore is shown in Figure 6. Without iron ore, QM had the highest crushing strength, which was 92.25%. ... Voigt R.C., Pagnotti V.R. Bindered anthracite briquettes as fuel alternative to metallurgical coke: Full scale performance in cupola furnaces. Fuel. 2014; 121:39–47. doi: 10 ...

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They considered micro scans of coke during crushing for volume fraction porosities varying between 0.42 and 0.63. They reported discontinuous yielding with an initial failure stress of 117-137 MPa ...

coking or poorly coking coals to be used as metallurgical coke. Blending prevents damage to oven when high pressure develops. (b) Coke oven: ... Coke breeze (or fines) is generated while crushing of coke. (f) Condenser: The foul main is cooled by indirect heat transfer with water for

The increase of metallurgical coke ash can increase the coke ratio of blast furnace, reduce the output of pig iron, and increase the cost. Therefore, the ash is required to be less than 13.5% and no more than 15%. Crushing strength and abrasion resistance are important physical properties of metallurgical coke.

United States Environmental Protection Agency Air and Energy Engineering Research Laboratory Research Triangle Park NC 27711 Research and Development EPA/600/S7-86/050 Apr. 1987 Project Summary Metallurgical Coke Industry Particulate Emissions: Source Category Report John Fitzgerald, John Jeffery, and Paul Wolf The objective of this study was to develop …

To produce quality metallurgical coke, a high-temperature carbonization process is used. High-temperature carbonization, which takes place above 900°C (1650°F), involves chemical …

Precarbonization technologies—The precarbonization technologies which can be considered for improving coke quality are selective crushing, coal preheating, partial …

The FMC Coke Process The FMC Coke Process represents a new, continuous method for the production of high-grade, preformed metallurgical coke from a wide range of coking and non-coking coals. This process was developed by the FMC Corp., formerly known as Food Machinery and Chemical Corp. The development work, be­

Factors which affect the M40 of coke are categorized into input coal properties like blend CSN, blend fluidity and process parameters of coke ovens like stamping time, crushing fineness, and coke ...

Changes in coke hardness affect the working of the blast furnace, for soft coke is an obstacle to proper furnace operation. ... Metallurgical Engineering Services; Environmental & Social; Project Construction; ... Coke is the ideal blast-furnace fuel because it is strong and hard enough to resist the crushing and grinding effects of the furnace ...

Wang et al. produced a bio-coke to use as a substitute for metallurgical coke by mixing biochar produced from sawdust with coke breeze at the ratio of 2:8, which satisfied the standard for high-quality secondary metallurgical coke. The internal structure and performance of the resultant coke were enhanced by filling cracks and pores with an ...

Coke crushing characteristics were checked also on 7 samples of chemical and metallurgical cokes produced in commercial plants in both beehive and slot-type ovens.

From the lumpy zone to the hearth, coke should possess strong crushing strength, high abrasion resistance, and robustness against varying atmospheric conditions, alkali metals, and other chemical assaults. ... (CRI and CSR) include its pore structure, matrix structure, microcrystalline structure, and mineral composition. Metallurgical coke, or ...

Metallurgical coke is an indispensable raw material for blast-furnace smelting. Its role in the blast furnace is to provide heat for chemical reactions, act as a reducing agent for iron ore, increase the carbon content in molten iron, maintain the stability of the blast-furnace column, and support the flow of gas up and down. ...

coke pieces in the test sample to optimize the coke bed height. This paper described in detail the methodologies adopted, addressing the factors resulting in differences in CRI/CSR values within the same coke. 1. INTRODUCTION Metallurgical coke is a prime burden support raw material, which contributes ∼60% of the hot metal production cost

Effects of solution loss degree, reaction temperature, and high temperature heating on the thermal properties of metallurgical cokes. Fuel, Vol. 283, Issue., p. ... The fracture characteristics and enhancement mechanism of crushing strength for the coke with hot pressing. Journal of Analytical and Applied Pyrolysis, Vol. 171, Issue., p.

Based on the above issues, anthracite has become the main substituting fuel for coke breeze in iron ore sintering due to its reasonable price 19,20.When this substitution is made, the particle ...

Metallurgical coke is produced by the destructive distillation of coal in coke ovens. Prepared coal is heated in an oxygen-free atmosphere (–coked–) until most volatile components in the coal …

Coke is a carbonaceous material that is derived from coal and is used as a fuel and a reducing agent in the metallurgical industry. Crushing coke is an important process in the production of metallurgical coke. The type of crusher that is best suited for crushing coke depends on the size and hardness of the coke, as well as the desired particle ...

Abstract Based on the results of the study of the crushing process of metallurgical coke, rational energy-power parameters of roller crushers used for fractional preparation of solid fuels in sintering production are substantiated. Under laboratory conditions, experiments were carried out to determine the conditions for the destruction of blast-furnace coke and dry …

Particle Size Distribution Models for Metallurgical Coke Grinding Products Laura Colorado-Arango 1, Juan M. Menéndez-Aguado 2,* and Adriana Osorio-Correa 1 Citation: Colorado-Arango, L.; ... to predict PSD by rock blasting and crushing fragmentation. The parameters are the max-imum size x. max, the size with 50% cumulative undersize x. 50.

influence the production of fines when crushing coke to as low as 3/4-inch top size and that a high hardness value is advantageous. Commercial Oven Cokes Coke crushing characteristics were checked also on 7 samples of chemical and metallurgical cokes produced in commercial plants in both beehive and slot-type ovens.

Results show that the crushing strength of coke is improved greatly when the hot pressing is conducted at 420 ℃∼440 ℃ for the 1/3 coking coal. Coke's crushing strength is mainly affected by porosity and pores' spatial distribution. For the high porosity, the coke has thin pore walls and the cracks could easily penetrate the entire coke.