progressive technologies of coal coalbed methane and ores mining

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Progressive Technologies Of Coal Coalbed Methane And Ores Mining

Author : Volodymyr Bondarenko
ISBN : 9781138026995
Genre : Science
File Size : 83. 1 MB
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Presenting new technologies in underground coal extraction, with special attention to mine galleries support and maintenance, load mechanism of "massif-support system-safety system" systems, analysis of face equipment for thin coal seams mining and substantiation of rational stoping parameters. Advanced surface mining technologies of coal and ore are discussed in an original form, stability calculations of internal dumps and open-cut faces are presented, as well as examination of land surface subsidence using modern methods of calculation experiments. Special attention is given to the complex mining of mineral resources, such as: iron ore, coal deposits with drilling advance degassing wells, methane extraction from coal and anthropogenic deposits, heat receipt from mine water with help of thermal pumps. The unique geological conditions for mining in Poland and the Ukraine require a new technological approach for mining thin and very thin coal seams with thickness of 1 meter and less, using selective coal extraction methods, leaving rock behind in the mine. Relevant technological solutions are discussed in this volume. Further, technological process control during coal seams underground gasification is described together with pressure-temperature conditions of gas hydrates formation from gaseous mixtures of various content. Substantiation is also given to gas hydrates extraction technologies development and 21st century new pulse technologies of well drilling and a temperature mode of a rock-cutting tool and equipment with cryogenic-gravel filters is examined. Gas extraction processes located in flooded deposits with uniform and macroheterogeneous collectors are presented with the description of an effective methodology of two-subbench technology of ore deposits extraction.

Mining Of Mineral Deposits

Author : Genadiy Pivnyak
ISBN : 9781315867472
Genre : Technology & Engineering
File Size : 81. 59 MB
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In the last decades coal production capacity has increased rapidly and its quality, power and the reliability of equipment has steadily improved. Moreover, stability of production processes can be controlled better. In connection with that, unification of scientific schools focusing on "Mining of deposits" is an integral trend from the viewpoint of technical and technological policy. This collection of papers represents the scientific and technical achievements with regard to mineral deposits mining intensification based on effective use of modern techniques and technologies. Also, specific attention is paid to progressive and innovational technologies in the coal industry of leading countries. Widening the range of mining-geological conditions under which drivage and maintenance of mining activities are carried out, requires application of new constructive decisions. Hence, this collection of papers is focusing on the following topics: results of new equipment introduction; experiments on mutual interaction of roof support elements, protective construction and near-the-contour rock massif; analytical and calculation methods of geomechanical tasks solution; development of gas hydrates and technologies of underground coal gasification; studies on environment protection; economic aspects; management and marketing in mining production, and other important aspects of mineral deposits exploitation.

Coal In Our Veins

Author : Erin Ann Thomas
ISBN : 9781457184437
Genre : Language Arts & Disciplines
File Size : 64. 37 MB
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In Coal in Our Veins, Erin Thomas employs historical research, autobiography, and journalism to intertwine the history of coal, her ancestors' lives mining coal, and the societal and environmental impacts of the United States' dependency on coal as an energy source. In the first part of her book, she visits Wales, native ground of British coal mining and of her emigrant ancestors. The Thomases' move to the coal region of Utah—where they witnessed the Winter Quarters and Castle Gate mine explosions, two of the worst mining disasters in American history—and the history of coal development in Utah form the second part. Then Thomas investigates coal mining and communities in West Virginia, near her East Coast home, looking at the Sago Mine collapse and more widespread impacts of mining, including population displacement, mountain top removal, coal dust dispersal, and stream pollution, flooding, and decimation. The book's final part moves from Washington D.C.—and an examination of coal, CO2, and national energy policy—back to Utah, for a tour of a coal mine, and a consideration of the Crandall Canyon mine cave-in, back to Wales and the closing of the oldest operating deep mine in the world and then to a look at energy alternatives, especially wind power, in West Virginia and Pennsylvania.

Applied Coal Petrology

Author : Isabel Suárez-Ruiz
ISBN : 0080951546
Genre : Technology & Engineering
File Size : 86. 16 MB
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This book is an integrated approach towards the applications of coal (organic) petrology and discusses the role of this science in the field of coal and coal-related topics. Coal petrology needs to be seen as a continuum of organic (macerals) and inorganic (minerals and trace elements) contributions to the total coal structure, with the overprint of coal rank. All this influences the behavior of coal in utilization, the coal by-products, the properties of coal as a reservoir for methane or a sequestration site for carbon dioxide, and the relationships of coal utilization with health and environmental issues. The interaction of coal properties and coal utilization begins at the mine face. The breakage of the coal in mining influences its subsequent beneficiation. Beneficiation is fundamental to the proper combustion of coal and is vital to the preparation of the feedstock for the production of metallurgical coke. An understanding of basic coal properties is important for achieving reductions in trace element emissions and improving the efficiency of combustion and combined-cycle gasification. The production of methane from coal beds is related to the properties of the in situ coal. Similarly, coal bed sequestration of carbon dioxide produced from combustion is dependent on the reservoir properties. Environmental problems accompany coal on its way from the mine to the point of utilization and beyond. Health aspects related with coal mining and coal utilization are also included because, in planning for coal use, it is impossible to separate environmental and health issues from the discussion of coal utilization. The book is aimed at a wide audience, ranging from researchers, lecturers and students to professionals in industry and discusses issues (such as the environmental, and health) that are of concern to the general public as a whole. This book focuses on the applications of coal (organic) petrology to our modern society It is an integrated approach to help the reader appreciate the importance of coal quality and coal utilization. Coal composition (macerals, mineral, trace elements) and the overprint of coal rank are treated together The book synthesises all the possibilities of the organic petrology as a tool for coal utilization in conventional applications (mining and beneficiation, coal combustion, gasification, liquefaction, carbonization), as a precursor of carbon materials and as a petroleum source and reservoir rock The role of applied petrology in the characterization of solid by-products from coal utilization is also discussed In addition, this book describes the present status of environmental and health problems linked to coal utilization and the ways in which such problems might be overcome in the future

Minerals And Coal Process Calculations

Author : D.V. Subba Rao
ISBN : 9781351847155
Genre : Technology & Engineering
File Size : 45. 46 MB
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The aim of process calculations is to evaluate the performance of minerals and coal processing operations in terms of efficiency of the operation, grade of the final products and recovery of the required constituents. To meet these requirements, in-depth detailed calculations are illustrated in this book. This book is designed to cover all the process calculations. The method and/or steps in process calculations have been described by taking numerical examples. Process calculations illustrated in a simple and self explanatory manner based on two basic material balance equations will allow the reader to understand the contents thoroughly. Inclusion of elaborate process calculations in every chapter is the highlight of this book. This book is unique and devoted entirely to the process calculations with sufficient explanation of the nature of the calculations. This book will prove useful to all: from student to teacher, operator to engineer, researcher to designer, and process personnel to plant auditors concerned with minerals and coal processing.

Mineral Processing At A Crossroads

Author : B.A. Wills
ISBN : 9789400944763
Genre : Technology & Engineering
File Size : 48. 11 MB
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Due to the increasingly complex mineralogy, and lower grade of many current ore reserves, technology has, over the past decade, had to evolve rapidly to treat these materials economically in an industry which has undergone severe periods of recession. However, most of the technical innovations, such as the increasing use of solvent-extraction, ion-exchange etc., have been in the field of chemical ore processing, and, apart from the use of computers and ever larger unit process machines, there have been few major evolutionary changes in the field of physical mineral processing, where conventional crushing and grinding methods, essentially unchanged in half a century, are followed by the 'old-faithfuls'- flotation, gravity, magnetic and electrostatic methods of separation. Many of these techniques have major limitations in the treatment of 'new' ores such as complex sulphides, and the main purpose of the NATO Advanced study Institute (ASI) "Mineral Processing at a Crossroads" was to review the future of mineral processing. One of the great failings of physical methods is their inability to treat ultra-fine particles, and much research effort is required in this area. Flotation is still the most widely used and researched method for separating minerals, and is the only method which can be used to produce separate concentrates from complex sulphide ores. However, its performance on these 'modern' ores is poor, and it is in this area particularly that chemical methods will increasingly be integrated into plant circuits.

Handbook For Methane Control In Mining

Author : Fred N. Kissell
ISBN : LCCN:2006298783
Genre : Coal mines and mining
File Size : 48. 34 MB
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The Continental Shelf

Author : M. W. Mouton
ISBN : 9789401759663
Genre : Science
File Size : 22. 68 MB
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Eia Coal Data A Reference

Author :
ISBN : 9781428952164
Genre :
File Size : 32. 64 MB
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Photogeology

Author : Bruno Marcolongo
ISBN : STANFORD:36105019289250
Genre : Aerial photography in geology
File Size : 76. 39 MB
Format : PDF
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During the past twenty years, thousands of remotely sensed imageries have been used by scholars all over the world for monitoring, among other things, landscape changes, the vulnerability of natural resources and the impact of man's activities on the environment. The use of such images follows a multi-discipline approach marked by experimental stages based on the identification of interpretative keys and the performance of ground checks. This book will provide students, teachers and scholars, among others, with a critical and up-to-date review of remote sensing, covering acquisition, elaboration and the interpretation of data. A wide range of examples, in large part, the result of the author's experience, provide a comprehensive view of the remote sensing applications in the domain of earth sciences.

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