Opening: 00AM - 24PM
Coking coals – IspatGuru

Fig 1 Coking or Metallurgical coal. Important properties required technically to produce good coke are. Good coking and caking properties such as fluidity, dilatation and crucible swelling number etc. Appropriate rank indicated by reflectance value (MMR) Properties important for commercial as well as BF operation such as total moisture, ash etc.

Get Price
The effect of plastic addition on coal caking .

The reasons why the plastic addition affects coal caking property and the effect of plastic addition on coal caking property vary depending on the types of plastics are considered as follows. Firstly, in the case of PS, it is known that monomers, dimers, trimers and polymer radicals are formed when PS is thermally decomposed [12] .

Cited by: 83Get Price
PROPERTIES OF COAL - University of Sheffield

PROPERTIES OF COAL. Important Properties of Coal. The most important properties of coal to the combustion engineer are as follows: · Proximate analysis - to determine the moisture, ash, volatiles matter and fixed carbon · Ultimate or elementary analysis - to determine the elemental composition of the coal · Calorific value · Caking properties - for bituminous coals only

Get Price
Properties of Coal - Yasin · PDF-bestand

Properties of Coal Differentiation of coking & non-coking coals: From physical appearance it is very difficult if not impossible to differentiate between non-coking & a coking coal. A non – caking coal is that coal which when heated in the absence of air for e.g. as in the determination of VM, leaves a .

Get Price
Coal properties - Jastrzębska Spółka Węglowa .

Our coal has a low content of ash, moisture, sulphur, and phosphorus, while having good caking properties and high plasticity. Those parameters make our coal the core ingredient in the production of top-quality metallurgical coke, which can claim low CO 2 reactivity and high mechanical endurance.. JSW S.A.'s coal matches the quality of hard coal produced in the US, Canada, or Australia.

Get Price
Modification mechanism of caking and coking .

Shenmu (SM) subbituminous coal without caking property was treated by low-temperature rapid pyrolysis (LTRP) to modify its caking and coking properties. The treated samples were characterized by Fourier transform infrared spectrometry, vitrinite reflectance, and X-ray diffraction to determine the modification mechanism. Moreover, caking index (G) and coking indices (mechanical strength, coke ...

Get Price
Standard Test Method for Free-Swelling Index of .

1.1 This test method 2 is a small-scale test for obtaining information regarding the free-swelling properties of a coal. The results may be used as an indication of the caking characteristic of the coal when burned as a fuel. This test is not recommended as a method for the determination of expansion of coals in coke ovens.

Get Price
Caking property and active components of coal .

The content and the caking index of the heavy, the dense medium and the loose medium components of coal, obtained by extraction and stripping with CS 2 /N-methyl-2-pyrrolidinone mixed solvent (1:1 by volume), were studied and correlated with the caking property of raw coals. Images of the three group components after heat treatment were analyzed.

Cited by: 4Get Price
Changes in chemical and physical properties of South ... · Fichier PDF

properties of caking coals. [1] Falcon, R., & Van der Riet, M. (2007). Effect of milling and coal quality on combustion. International Pittsburgh Coal Conference. on: South Africa. [2] Jeffrey, L. (2005). Characterization of the coal resources of South Africa. The Journal of The South African Institute of Mining and Metallurgy, 95-102. 2. Background: pyrolysis • Pyrolysis is the thermal ...

Get Price
What is the difference between coking coal and .Deze pagina vertalen

Strongly caking coals, which yield a solid product (coke) with properties suitable for use in a blast furnace, are called coking coals. All coking coals are caking, but not all caking coals are ...

Get Price
Structural Evolution and Formation Mechanisms .

A new method for the alkali catalytic modification of lignite in subcritical H2O–CO systems is presented, which can greatly improve its caking properties (caking index, >90). Soxhlet extraction technology coupled with GPC (gel permeation chromatography), FTIR (Fourier transform infrared spectroscopy), and 13C-NMR (carbon-13 nuclear magnetic resonance) analysis methods were used to ...

Get Price
Production of high-strength cokes from non .

Production of high-strength cokes from non-/slightly caking coals. Part I: Effects of coal pretreatment and variables for briquetting and carbonization on coke properties . Masahiro Matoba, Shinji Kudo, Aska Mori, Koyo Norinaga, Kenya Uchida, Yusuke Dohi, Kazuya Uebo, Jun Ichiro Hayashi. Advanced Device Materials; Research output: Contribution to journal › Article. 1 Citation (Scopus ...

Get Price
Metallurgical Coal and Coke Testing - SGS · PDF-bestand

the rheological or plastic properties of a coal or coal blend. In addition, the Sapozhnikov and G Caking Index tests are used in certain areas of the world as rheological evaluation tools. GIESELER PLASTOMETER TEST For this analysis, 5 grams of minus 40 mesh prepared coal are packed into a

Get Price
Metallurgical coal - WikipediaDeze pagina vertalen

Metallurgical coal or coking coal is a grade of coal that can be used to produce good-quality coke.Coke is an essential fuel and reactant in the blast furnace process for primary steelmaking. The demand for metallurgical coal is highly coupled to the demand for steel. Primary steelmaking companies often have a division that produces coal for coking, to ensure a stable and low-cost supply.. Raw ...

Get Price
Destruction of Caking Properties of Coal by .

Destruction of caking properties of bituminous coal by jetting pre-oxidation in a fluidized bed. Fuel 2014, 133, 45-51. DOI: 10.1016/j.fuel.2014.05.006. Juwei Zhang, Zhigang Zhao, Guangyi Zhang, Zeng Xi, Feixiang Zhao, Li Dong, Guangwen Xu. Pilot study on jetting pre-oxidation fluidized bed gasification adapting to caking coal.

Get Price
Glossary - U.S. Energy Information Administration (EIA)Traduire cette page

In the United States, the standard ranks of coal include lignite, subbituminous coal, bituminous coal, and anthracite and are based on fixed carbon, volatile matter, heating value, and agglomerating (or caking) properties. Coal sampling: The collection and proper storage and handling of a relatively small quantity of coal for laboratory ...

Get Price
Properties Affecting Coal Utilization | Special .

Coal utilization, combustion of coal or its conversion into useful solid, gaseous, and liquid products. By far the most important use of coal is in combustion, mainly to provide heat to the boilers of electric powerplants. Metallurgical coke is the major product of coal conversion. In addition, techniques for gasifying and liquefying coal into fuels or into feedstocks for the chemical industry ...

Get Price
Coal Blending Theory-Retrospect and Prospect* · Fichier PDF

caking coal, caking additives, etc., with new properties have found gradual application in coke production. When deciding coal blending, therefore, the combined effects of these factors must be taken into considera- tion. For this reason, the role to be played by the coal blending theory has become increasingly impor-tant. For the preparation of various plans in con-nection with the ...

Get Price
Biological Properties of Coal and Coal Extracts | .Traduire cette page

Evans1,2, as a result of studies on the cause of coalminers' pneumoconiosis, discovered that methanolic extracts of certain coals exerted an inhibitory effect on bacteria in vitro. He named the ...

Get Price
Destruction of Caking Properties of Coal by .Traduire cette page

Destruction of caking properties of bituminous coal by jetting pre-oxidation in a fluidized bed. Fuel 2014, 133, 45-51. DOI: 10.1016/j.fuel.2014.05.006. Juwei Zhang, Zhigang Zhao, Guangyi Zhang, Zeng Xi, Feixiang Zhao, Li Dong, Guangwen Xu. Pilot study on jetting pre-oxidation fluidized bed gasification adapting to caking coal.

Get Price