• ISO/DIS 23873 Hard coal -- Caking and coking properties

    Hard coal — Caking and coking properties — Dilatation 1 Scope. This International Standard describes a method for the measurement of the swelling of hard coal using a. dilatometer. 2 Normative references. The following referenced documents are indispensable for the application of this document. For dated. references, only the edition cited

    Hard coal — Caking and coking properties — Dilatation

    Hard coal — Caking and coking properties — Dilatation 1 Scope This International Standard describes a method for the measurement of the swelling of hard coal using a dilatometer. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies.

    Caking and coking properties of the thermal dissolution

    01-02-2014· In the coal blending for coke-making, fat coal has a very important role for the caking and coking properties of the coal blends. In this study, a fat coal was thermally dissolved, and the caking and coking properties of the thermal dissolution soluble factions (TDSFs) from different solvents and temperatures were characterized.

    PROPERTIES OF COAL University of Sheffield

    Caking Properties of Coals This is a unique property of coals in the bituminous group of coals and is an essential property for coals which are required for coking. As a caking coal is heated it passes through a region where it becomes very plastic, softens, swells and then re solidifies. The residue is

    What is Coking properties and caking index of coal

    12-09-2007· However, caking properties (p l a s t i c i t y) also a f f e c t the coke strength. Upon heating, coal undergoes chemical changes, giving r i s e to the evolution of gas and condensible vapors and...

    coal caking property Vertaling Engels-Nederlands

    Online vertaalwoordenboek. NL:coal caking property. Mijnwoordenboek.nl is een onafhankelijk privé-initiatief, gestart in 2004.

    Effect of coal soluble constituents on caking property of

    01-07-2007· Three cokemaking bituminous coals were extracted by the CS 2 /NMP mixed solvents with different content of NMP, and the effect of the amount and the component of coal soluble constituents on the caking property of the extracted residues of coals were investigated in this study. The CS 2 /NMP mixed solvent (1:1 by volume) was found to give the maximal extraction yields for the three coals, and

    The effect of plastic addition on coal caking properties

    01-10-2003· The effect of plastic addition on coal caking property varied with types of plastics. The addition of aliphatic polymers such as polyethylene (PE), polypropylene (PP) and poly (vinyl chloride) (PVC) had only a small effect on coal caking property and coke strength and in some cases PE addition increased coke strength.

    What is the difference between caking and non-caking coal

    Caking coal is the Coal which will form a solid residue on heating to very high temperature around 1100 deg Celsius in the absence of oxygen (or very less amount of oxygen). Non-Caking coal is the Coal which will form powder residue on heating to very high temperature around 1100 deg Celsius in the absence or very less amount of oxygen.

    Coking Coal an overview ScienceDirect Topics

    Gulhan Ozbayoglu, in Comprehensive Energy Systems, 2018. 3.19.1.1.2 Coal is used in iron and steel industry. Coking 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 hot blast.

    The Caking and Coking Properties of Coal JST

    From a view-point of manufacture of coke, the author reviewed more than 50 researches on the caking and coking properties of coal carried out in Japan.These reports were classified into the following paragraphs according to the contents and each outline was described.(1) The method of the determination of the caking power of coal, (2) The action of bitumen, (3) The role of humin

    ISO/DIS 23873 Hard coal -- Caking and coking

    Hard coal — Caking and coking properties — Dilatation 1 Scope. This International Standard describes a method for the measurement of the swelling of hard coal using a. dilatometer. 2 Normative references. The following referenced documents are indispensable for the application of this document. For dated. references, only the edition cited

    Hard coal — Caking and coking properties — Dilatation

    Hard coal — Caking and coking properties — Dilatation 1 Scope This International Standard describes a method for the measurement of the swelling of hard coal using a dilatometer. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies.

    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

    Improving the caking properties of gas coal Request PDF

    Request PDF Improving the caking properties of gas coal 216 There is a continuing shortage of caking coal for coking. Accordingly, various additives are employed in preparing the coal batch

    what is caking properties? Yahoo Answers

    19-03-2012· Caking Properties of Coals. This is a unique property of coals in the bituminous group of coals and is an essential property for coals which are required for coking. As a caking coal is heated it passes through a region where it becomes very plastic, softens, swells and then re solidifies. The residue is a cellular coke mass.

    Method for reducing caking property of coal

    A method for reducing the caking property of coal, by contacting coal with sulfur dioxide in an amount at least 0.5 times the amount of the coal on a weight basis, at a temperature of at least 120° C. under a pressure of at least 10 Kg/cm 2, and separating the treated coal from the sulfur dioxide, whereby to reduce the caking property of the coal and to render the coal more easily pulverizable.

    Metallurgical coal Wikipedia

    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

    What is the difference between coking coal and caking

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

    Properties and Uses of Gypsum Science Struck

    Properties and Uses of Gypsum. Gypsum is a sulfate mineral that has found numerous uses in modern times. This mineral also exhibits some interesting properties, which are discussed in

    ISO/DIS 23873 Hard coal -- Caking and coking

    Hard coal — Caking and coking properties — Dilatation 1 Scope. This International Standard describes a method for the measurement of the swelling of hard coal using a. dilatometer. 2 Normative references. The following referenced documents are indispensable for the application of this document. For dated. references, only the edition cited

    Significance of coal properties on the caking degree of

    (2020). Significance of coal properties on the caking degree of coarse coal particles mined at Limpopo Province, Republic of South Africa. International Journal of Coal Preparation and Utilization: Vol. 40, No. 4

    EFFECT OF ALKALI TREATMENT ON THE CAKING

    15-01-2021· Abstract Three weakly caking and non-caking high volatile bituminous coals from India were converted into good caking derivatives by treatment with alcoholic alkali at 250–300 °C and 22–25.5 MPa. These derivatives showed high Gieseler fluidities with wide plastic range and may be useful as additives to coals for oven charges. During alcoholic alkali treatment, the organic material of coal

    Improving the caking properties of gas coal SpringerLink

    Zherebtsov, S.I., Modifying Coal of Low Metamorphic Stages by Alkylation with Methanol, Cand. Sci. Dissertation, Institute of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, 2002. Google Scholar

    what is caking properties? Yahoo Answers

    19-03-2012· Caking Properties of Coals. This is a unique property of coals in the bituminous group of coals and is an essential property for coals which are required for coking. As a caking coal is heated it passes through a region where it becomes very plastic, softens, swells and then re solidifies. The residue is a cellular coke mass.

    What is Coking properties and caking index of coal

    12-09-2007· All properties of coal are more or less related to the c o a l i f i c a t i o n metamorphism. However, caking properties ( p l a s t i c i t y ) also a f f e c t the coke strength. Upon heating, coal undergoes chemical changes, giving r i s e to the evolution of gas and condensible vapors and leaving behind a solid residue consisting almost entirely Of carbon.

    Properties of Coal Yasin

    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

    Oxidation Behavior and Caking Property of Coal under

    The caking property of bituminous coal decreases by the oxidation in the oxidative atmosphere of low oxygen concentration of 5 vol%, which corresponds to that in a flue gas. The aliphatic C-H groups in highly caking coals are easily oxidized during oxidation and remained in coal

    Effect of Rapid Preheating on the Caking Properties of

    Thus, thermoplastic properties of a non-caking coal as well as a caking coal can be improved greatly by heating at 400-500 K/min prior to carbonization. View. Show abstract.

    What is the difference between coking coal and caking

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

    EFFECT OF ALKALI TREATMENT ON THE CAKING

    15-01-2021· Abstract Three weakly caking and non-caking high volatile bituminous coals from India were converted into good caking derivatives by treatment with alcoholic alkali at 250–300 °C and 22–25.5 MPa. These derivatives showed high Gieseler fluidities with wide plastic range and may be useful as additives to coals for oven charges. During alcoholic alkali treatment, the organic material of coal

    Relationship between Caking Properties of Coal

    For blended coals consisting of coking coal and non-or slightly caking coals, there are no good relationships can be seen between caking property values of the coal blends measured by the Gieseler plastometry and strength indices of the cokes made from these coal blends. New method for evaluating caking properties by NMR has been discussed.

    Improving the caking properties of gas coal SpringerLink

    Zherebtsov, S.I., Modifying Coal of Low Metamorphic Stages by Alkylation with Methanol, Cand. Sci. Dissertation, Institute of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, 2002. Google Scholar

    Destruction of Caking Properties of Coal by

    01-05-2002· 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.

    What is Coking properties and caking index of coal

    12-09-2007· All properties of coal are more or less related to the c o a l i f i c a t i o n metamorphism. However, caking properties ( p l a s t i c i t y ) also a f f e c t the coke strength. Upon heating, coal undergoes chemical changes, giving r i s e to the evolution of gas and condensible vapors and leaving behind a solid residue consisting almost entirely Of carbon.

    Method for reducing caking property of coal

    A method for reducing the caking property of coal, by contacting coal with sulfur dioxide in an amount at least 0.5 times the amount of the coal on a weight basis, at a temperature of at least 120° C. under a pressure of at least 10 Kg/cm 2, and separating the treated coal from the sulfur dioxide, whereby to reduce the caking property of the coal and to render the coal more easily pulverizable.

    what is caking properties? Yahoo Answers

    19-03-2012· Caking Properties of Coals. This is a unique property of coals in the bituminous group of coals and is an essential property for coals which are required for coking. As a caking coal is heated it passes through a region where it becomes very plastic, softens, swells and then re solidifies. The residue is a cellular coke mass.

    Oxide content in ash and the petrographic composition

    Oxide content in ash and the petrographic composition and caking properties of coal Concentrates of 33 mid-bed caking-coal samples from 13 mines in the Kuznetsk Basin are analyzed. The results of technical analysis, petrographic characteristics, and plastic-layer thickness of the coal are related to the primary components of the content (by mass) of seven acidic and basic oxides in their ash.

    Oxidation Behavior and Caking Property of Coal under the

    The caking property of bituminous coal decreases by the oxidation in the oxidative atmosphere of low oxygen concentration of 5vol%, which corresponds to that in a flue gas. The aliphatic C–H groups in highly caking coals are easily oxidized during oxidation and remained in coal

    Differentiation of coking & non-coking coals

    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 powdery residue. A non-caking coal is always a non-coking coal. A non-coking coal may bot be non-caking coal. (Reason : a non-coking coal can also produce coke which is never suitable for steel industry). A non-caking coal is

 

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