This technique examines and evaluates the optical properties and microstructural. Petrographic analysis is performed to characterize coals eg exploration programs, to confirm expectations of coals eg. Petrography and application of the rietveld method to the. Petrographic examination of coal from pellets or thin sections is used for many different analyses.
Coal petrography coal petrography is a microscopic technique used to determine a coals rank degree of coalification and type amount and type of macerals on polished specimens of minus 20 mesh prepared coal. Preliminary results of cga analysis of parent coal and daughter char. The founders of coal petrography in the ussr were iu. Petrographic and chemical analysis of coal is important. Sgs provides coal and coke petrographic services to determine parent coal blend percentages, troubleshoot quality problems, and evaluate impacts of coke operations on the resultant product. In the present study an attempt has been made to carry out the detailed petrographic characterization of the karharbari coals of talcher coalfield and to reconstruct the paleoenvironment conditions of coal formation using macerals and microlithtotypes as a tool. Isodis 74044en, methods for the petrographic analysis of. Coal, coal beneficiation, coal petrology, south santa catarina. A holistic approach to studies of the origin of coal and coal macerals, which includes not only petrographic but also chemical and biological studies, is advocated. Coal composition is popularly characterized in terms of macerals which are the microscopically recognizable individual constituents of coal. For each coal sample received for full analysis, a summary of relevant petrographic parameters is presented as well as graphical content. The mineral content and the textural relationships within the rock are described in detail. Coal petrography article about coal petrography by the free. The main aim of this investigation is establishing that this combination gaanfis is a powerful tool for several predictions in coal processing.
Solid mineral fuels pcd 7 designator of legally binding document. Free on application to distribution branch, text products section. Standard guide for petrographic examination of aggregates for. For these purposes a large number of samples were collected following the pillar sampling method. Organized into four parts encompassing 19 chapters, this volume starts with an overview of the petrographic analysis of coal wherein it involves two distinctive methods, namely, the reflected light and the transmitted light techniques. Petrographic analysis coal petrographic analysis of collected coal samples from well 1 of jharia coalfield shows the value of vitrinite ranges from 32. A petrographic microscope is a type of optical microscope used in petrology and optical mineralogy to identify rocks and minerals in thin sections. The purchase was made possible by the major support of the ppm, and equal contributions from the university research and faculty research committees. Effects of chemical composition and petrography of coal. Coal seams d and e belong to the muara enim formation in south sumatra basin, which includes to the middle miocene to late miocene.
Earth sciences combustion methods crystal structure crystals structure xray diffraction xrays diffraction. During the execution of the project 19932001 closespaced exploratory drilling, geological, geotechnical and geophysical logging, coal petrography, chemical analysis of selected coal samples, palynological investigations, basinal studies and geological modeling in four specific tracts namely sinhar vikianvarivi block1, singharobhitro blockii, saleh jo tar blockiii and sonalba. Sasaki, automatic maceral analysis of lowrank coal brown coal, international journal of coal geology, 14, 12, 103, 1989. Method of determining microlithotype, carbominerite and minerite composition number of amendments. Analytical methods for coal and coal products 1st edition. It establishes a system for petrographic analysis and comprises five parts, as follows. The standardization of petrographic analysis of coal, journal. Petrographic analysis an overview sciencedirect topics.
Petrographic analysis, coal analysis, kentucky geological. Both theoretical coal properties and statistical factors were applied to select appropriate variables as input sets for anfis models. Petrography and application of the rietveld method to the quantitative analysis of phases of natural clinker generated by coal spontaneous combustion. The classification of rocks is based on the information acquired during the petrographic analysis. Chemical analyses and physical properties of 12 coal. Some of the industrial uses of petrographic analysis include coal rank determination, crushing and grinding analysis of coal, determining caking characteristics and char reactivity of coal taylor et al. Petrographic analysis is an important tool to study the mineralogical and chemical composition of stones on monuments and to monitor the chemical weathering evolution, which is nowadays a result of acid dissolution of carbonate materials and sulfation of stone surfaces due to industrial pollution. Coal type is related to the type of plant material in the peat and the extent of its biochemical and chemical alteration. Petrographic characterization of coal using automatic. Recommended procedures and methodology of coal description. Jun 18, 2016 in the present study an attempt has been made to carry out the detailed petrographic characterization of the karharbari coals of talcher coalfield and to reconstruct the paleoenvironment conditions of coal formation using macerals and microlithtotypes as a tool. The purpose of this study was to investigate the characteristics of coal and coal depositional environments of seam d merapi and seam e keladi. Definition of terms relating to petrographic analysis of coal number of amendments. Coal petrography article about coal petrography by the.
Coal petrography in 2015 uj acquired a new petrographic system for coal and carbon analyses, at a total cost of r1. Petrographic analysis is performed to characterise coals. Petrographic analyses have been recognized internationally as important in the context of the genesis, vertical and lateral variation, continuity, metamorphism and usage of coal. Coal pellet preparation for petrographic analysis of coal. Mineral matter is recorded during petrographic examination of coals, but is identified more accurately by xray diffraction analysis of low temperature ash lta obtained by radiofrequency plasma ashing of coal rao and gluskoter, 1973. Someone who studies petrography is called a petrographer. Coal petrography is a microscopic technique used to determine a coal s rank degree of coalification and type amount and category of macerals. Purchase analytical methods for coal and coal products 1st edition. This manual is a muchneeded revision of an earlier usgs publication, coal petrographic laboratory procedures and safety manual moore and stanton, 1985. Free swelling index of the coal as determined applying the bunsen burner. Petrographic characterization and evolution of the. Csiro coal petrography laboratory and coal grain analysis.
The classification of coal macerals is set out in appendix a. Laboratory services for coal subject the performance of analytical procedures on energy materials and minerals at any point in the production chain must be completed with the utmost attention to accuracy, reputable methodology and reliable operating procedures. Petrography of coal coke fuel bituminous coal free. Coal petrology is concerned with the origin, composition and properties of the distinct organic and inorganic components of different coals. Petrographic characteristics indicate that both of seams d and e dominant macerals are vitrinite, the most dominant subgroup of vitrinite is telovitrinite. Pdf coal petrographic laboratory procedures and safety manual, ii. Recent research on the origin of coal macerals is presented and there is a discussion of the problems and challenges facing coal petrologists. Method of preparing coal samples part 2 method of preparing coal samples first revision in reporting the results of a test or analysis made in accordance with this standard, if the final. The development of new sample preparation and analysis techniques has necessitated both an overhaul of many established procedures and the adoption of new ones. Microscopical determination of the reflectance of vitrinite number of amendments.
The popular method of proximate analysis of coal have been carried to determine the moisture content, volatile matter, fixed. Sampling techniques are described by specific iso standards, as well as national standards such as astm, sans, etc. Coal petrographic laboratory procedures and safety manual, ii. Predicting coke stability from petrographic analysis of illinois coals. Fluorescence microscopy is currently employed in coal petrology and in kerogen studies for characterization. The international committee for coal petrology iccp has defined and published descriptions of coal macerals for both hard and brown coals iccp, 1971. Effects of chemical composition and petrography of coal for coalbed. Interchangeability of results and applicability of prediction methods have been hampered up to. Types of petrography used in coal analysis include. Please checkout our competitive prices for thin sections, photomicrographs and petrographic analysis. Chemical analyses and physical properties of 12 coal samples.
Pdf study of the total petrographic composition of coal and the relations between macerals and minerals by combining. Petrographic descriptions start with the field notes. Manual petrography provides composition and rank information. Standard guide for petrographic examination of aggregates. Petrographic analysis is used to characterize coals in terms of the maceral group. Producers and users of coal and coke rely on sgs, an industry leader in coal petrology, for independent, globally recognized coal petrographic analysis. High vol petro analysis coal analysis as received dry basis % moisture 7. Petrographic characterization and evolution of the karharbari.
The analysis is carried out by a petrographic analysis, which is supported by the results of coal vitrinite refl ectance. The performance of analytical procedures on energy materials and minerals at any point in the production chain must be completed with the utmost attention to accuracy, reputable methodology and reliable operating procedures. A petrographic analysis provides pertinent information about the structures concrete and steel materials to help engineers determine the bestsuited repair strategy. Petrographic analyses of two coal samples from mcdowell county, w. Pdf coal petrographic laboratory procedures and safety. The standards association of australia 1986 however, has issued a standard for maceral analysis based on a coal maceral classification applicable to all coals, regardless of rank, recognising the. Coal petrography the description of the components of coal as studied macroscopically and in thin and polished sections under the microscope. Calculations of results of analysis of coal solid fuels coefficient of conversion. Petrography of coal coke fuel bituminous coal free 30. The standardization of petrographic analysis of coal the standardization of petrographic analysis of coal juckes, l. The microscope is used in optical mineralogy and petrography, a branch of petrology which focuses on detailed descriptions of rocks. Petrography is a branch of petrology that focuses on detailed descriptions of rocks. What can petrographic analysis tell you about the condition.
Typically these reports are sent in microsoft excel format, but can be created in many formats available in todays wired world. Nov 02, 2014 petrographic analysis is performed to characterize coals eg exploration programs, to confirm expectations of coals eg. The standardization of petrographic analysis of coal. Petrographic analysis and its relationship with calorific. This type of petrographic analysis is based on the properties of some macerals that autofluoresce when irradiated with blue or ultraviolet light and may be of assistance in rank assessment. Type of conversion raw r analytical a dry d dry ash free daf from raw state r 1 1. Sgs can provide a full range of coal, coke, and byproduct petrographic services. Maceral analysis 1 scope this standard sets out a procedure for the maceral analysis of coal, aimed at obtaining the proportion of each maceral occurring within a coal, expressed as a volume percentage. Introduction this report describes the petrography of the following coals. Methods for microscopical determination of the reflectance of coal macerals or iso 7404. Petrography of coal free download as powerpoint presentation.
Apr 18, 2011 high vol petro analysis coal analysis as received dry basis % moisture 7. The research is located at the air laya coal mines, ptba, tanjung enim, south suma tra. Petrography is a branch of geology that is applied to concrete and concrete raw materials. The standardization of petrographic analysis of coal wiley online. For these purposes a large number of samples were collected following the pillar sampling method and were subjected to detailed. Petroleum, coal, and related products section name. Crossref jin kuili, xia jian and hao duohu, the use of automated coal petrography in determining maceral group composition and the reflectance of vitrinite, international journal of coal geology.
The method is called polarized light microscopy plm. For quantitative petrographic analysis, it is important that coal samples should be representative of the parent material, whether individual seams of coal or mined, crushed, and beneficiated coal products. Sample preparation each coal sample was coned and quartered and reduced to. Isodis 74044en, methods for the petrographic analysis. Stopes of great britain made seminal contributions to the development of. Type can be assessed in terms of variety of petrographic analysis. Maceral analysis pearson coal petrography we fingerprint. Petrographic analyses of two coal samples from mcdowell.
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