Distribution of mineral species in different coal seams of Talcher coalfield and its transformation behavior at varying temperatures

Amit Banerjee; P.R.Mishra; Ashok Mohanty; K.Chakravarty; R.Das Biswas; R.Sahu; S.Chakravarty

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Distribution of mineral species in different coal seams of Talcher coalfield and its transformation behavior at varying temperatures

机译：塔尔彻煤田不同煤层矿物分布及其在不同温度下的转化行为。

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Mineral phase characterization and thorough understanding of its transformation behavior during combustion are imperative to know the potential utilization of coal in the thermal industries.The primary objective of this work is to analyze the quality of Indian Coals and obtain their mineral species-specific information at different depths.The samples were obtained from Talcher Coalfield,Odisha,India.Coal from four seam sections in the Talcher coalfield,India are mainly high ash coal (＞50 ％) and volatile matter deceases along with the seam depth.XRD results show that the major mineral phases present in the coal are quartz and kaolinite.Siderite,illite,and anatase were found in minor quantities.It has been observed that the clay minerals (kaolinite,silimanite,illite) decompose at higher temperature and traces of dolomite,mullite,hematite etc.are formed during the process of combustion.Among the four seams (M2,M12,M24 and M43)studied,ash of M43 has high Al2O3％,TiO2％ and K2O％ content and low SiO2％,CaO％ and MgO％ content.High acidto-base ratios contributed to high ash fusion temperatures (IDT ＞ 1500 ℃) and low slagging potential of the coals studied.Relatively low fouling index (＜0.3) was estimated for all the coal seams studied.Furthermore,thermodynamic modeling software,FactSage,have been used to envision the mineral phase transformations that take place between 800 and 1500 ℃during coal combustion.

机译：矿物相表征和彻底了解燃烧过程中的转化行为是必须了解煤炭在热产业中的潜在利用。这项工作的主要目标是分析印度煤的质量，并在不同的情况下获得其矿物质物种的信息深度。从Talcher煤田，奥迪沙，印度获得样品。印度的四个煤层中的四个接缝部分，主要是高灰煤（> 50％）和挥发物质较阳性的污染结果表明煤中存在的主要矿物相是石英和高岭石。在轻微的数量中发现了羟基钛矿。已经观察到粘土矿物质（高潮，硅铝石，伊利钠）在较高温度和白云石，莫来石的痕迹中分解，甲石等地区在燃烧过程中形成。在燃烧过程中形成的四个接缝（M2，M12，M24和M43）研究，M43的灰分具有高Al 2 O 3％，TiO 2％和K2O％含量和L. OW SiO2％，CaO％和MgO％含量。高酸基碱基比对于高灰分熔化温度（IDT> 1500℃）以及所研究的煤的低熔渣电位。估计所有的低结垢指数（<0.3）煤层研究。热力学，热力学建模软件，事实上已被用于设想煤燃烧过程中发生在800和1500℃之间的矿物相变。

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《国际煤炭科学技术学报（英文）》 |2016年第002期|97-103|共7页
作者
Amit Banerjee; P.R.Mishra; Ashok Mohanty; K.Chakravarty; R.Das Biswas; R.Sahu; S.Chakravarty;
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Analytical Chemistry Division, CSIR-National Metallurgical Laboratory, Jamshedpur, Jharkhand 831007,India;

Department of Metallurgical and Materials Engineering,National Institute of Technology, Jamshedpur,Jharkhand 831014, India;

Analytical Chemistry Division, CSIR-National Metallurgical Laboratory, Jamshedpur, Jharkhand 831007,India;

R&D, Tata Steel Ltd, Jamshedpur, Jharkhand 831007, India;

Analytical Chemistry Division, CSIR-National Metallurgical Laboratory, Jamshedpur, Jharkhand 831007,India;

Department of Metallurgical and Materials Engineering,National Institute of Technology, Jamshedpur,Jharkhand 831014, India;

Analytical Chemistry Division, CSIR-National Metallurgical Laboratory, Jamshedpur, Jharkhand 831007,India;

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Distribution of mineral species in different coal seams of Talcher coalfield and its transformation behavior at varying temperatures

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