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Quartz And Silica
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Book Synopsis Mineralogy of Quartz and Silica Minerals by : Jens Götze
Download or read book Mineralogy of Quartz and Silica Minerals written by Jens Götze and published by MDPI. This book was released on 2018-11-20 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Mineralogy of Quartz and Silica Minerals" that was published in Minerals
Book Synopsis Quartz and Silica by : Reigart Meredith Santmyers
Download or read book Quartz and Silica written by Reigart Meredith Santmyers and published by . This book was released on 1931 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crystalline Silica, Quartz by : F. Rice
Download or read book Crystalline Silica, Quartz written by F. Rice and published by . This book was released on 2000 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concise assessment of the adverse effects on human health caused by exposure to quartz the most common form of crystalline silica. Quartz is a frequently occurring solid component of most natural mineral dusts. Human exposure occurs most often during occupational activities involving movement of earth disturbance of silica-containing products such as masonry and concrete or use or manufacture of silica-containing products. As respirable quartz dust particles can be inhaled and deposited in the lung the report gives particular attention to evidence of an increased risk of lung cancer in occupationally exposed workers. Most studies in laboratory animals have concentrated on adverse effects associated with long-term inhalation of particles. Effects observed include cellular proliferation nodule formation suppressed immune function and alveolar proteinosis. While exposure clearly induces pulmonary tumours in one species other species show less or no malignant tumour response. The evaluation of risks to human health draws on a large number of epidemiological studies of workers exposed to respirable quartz dust. Occupational exposure has been linked to an increased incidence of silicosis ung cancer and pulmonary tuberculosis. Studies have also documented statistically significant increases in cases of bronchitis emphysema chronic obstructive pulmonary disease autoimmune-related diseases including scleroderma rheumatoid arthritis and systemic lupus erythematosus and renal disease. In reviewing these findings the report underscores several uncertainties inherent to the study of respiratory diseases in occupational populations that complicate the assessment of risks associated with exposure to quartz dust. The need for improved methods of exposure assessment and data analysis is stressed.
Book Synopsis Quartz and Silica by : Reigart Meredith Santmyers
Download or read book Quartz and Silica written by Reigart Meredith Santmyers and published by . This book was released on 1931 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Society for Mining, Metallurgy, and Exploration (U.S.) Publisher :SME ISBN 13 :0873351665 Total Pages :57 pages Book Rating :4.8/5 (733 download)
Book Synopsis Crystalline Silica by : Society for Mining, Metallurgy, and Exploration (U.S.)
Download or read book Crystalline Silica written by Society for Mining, Metallurgy, and Exploration (U.S.) and published by SME. This book was released on 1998 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: In practical language, Crystalline Silica addresses what crystalline silica is, where it is found and used, and how it is identified. In addition, the book discusses the regulatory decisions yielding new interest in this ubiquitous substance and presents an overview of the techniques used to determine its presence and abundance. A list of selected readings and supplemental resources and a glossary of terms beyond the scope of this publication round out the text.
Book Synopsis Silica Glass and Its Application by : I. Fanderlik
Download or read book Silica Glass and Its Application written by I. Fanderlik and published by Elsevier. This book was released on 2013-10-22 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: In terms of chemical composition, silica glass is the simplest amorphous substance that has been commercially utilized in many fields of application in a number of industrial branches, thanks to its physico-chemical properties.The present volume gives a comprehensive overview on the latest developments in glass technology. The influence of genetic types of raw materials on the choice of melting technology is discussed. Phase transformations of quartz-silica glass and the influence of the impurities of melting furnaces and furnace material is examined. The quartz raw materials suitable for the manufacture of clear, opaque and synthetic silica glasses, various manufacturing processes, the physico-chemical properties of silica glasses and their utilization in technological practice are reviewed in detail.The book provides a wealth of detailed information on the properties and use of silica glass which will be of considerable interest to workers in the glass industry, including those in research and development, as well as to people in the fields of electronics, electrical engineering, communication technology, optics and the chemical, power engineering and metallurgical industries. It will also be a useful information supplement on the properties and applications of silica glass for students in technical schools and universities.
Book Synopsis Refractory Material Selection for Steelmaking by : Thomas Vert
Download or read book Refractory Material Selection for Steelmaking written by Thomas Vert and published by John Wiley & Sons. This book was released on 2016-05-02 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book since 1974 written by a steelmaking end user and refractory engineer Why do you pick the refractory you do? How do you choose? Where do you start the selection process? The answers to these questions must always take into account the balance of competing interests among operations, purchasing, and the suppliers. Refractory Material Selection forSteelmaking is the ultimate guide to finding ideal answers to these questions. By following the step-by-step instructions—paired with detailed explanations and full-color diagrams—readers will be able to critically select the materials that are most appropriate for them. This book considers: The goals of refractory selection What causes refractories to wear out The properties of refractories and their raw materials Specific refractory applications Key strategies used to procure refractories Tom Vert's 25 years of experience in steelmaking combined with a ceramic engineering background provide comprehensive information that will benefit anyone working with refractories in steelmaking or any other industry.
Book Synopsis Collector's Guide to Quartz and Other Silica Minerals by : R. J. Lauf
Download or read book Collector's Guide to Quartz and Other Silica Minerals written by R. J. Lauf and published by Schiffer Publishing. This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quartz is prized by both mineral collectors and lapidary artists. Over 130 vivid photographs of these beautiful minerals are presented to show each mineral in its geological context. Superb examples are found in diverse geological settings from pegmatites to Alpine clefts and hydrothermal veins. The silica minerals are chemically simple, yet structurally complicated. Several high temperature and high pressure polymorphs are known. In addition to the polymorphs of silica, this book treats related minerals, including: lechatelierite, opal, and two natural clathrates, chibaite and melanophlogite. After a brief introduction, the general treatment explains the chemistry and taxonomy of the group. A section on their formation and geochemistry describes the kinds of environments where these minerals are formed. Then, entries for each mineral provide locality information and full-color photos so that collectors can see what good specimens look like and which minerals one might expect to find in association with them. An extensive bibliography is also provided.
Download or read book Silica written by Raymond Bardeen Ladoo and published by . This book was released on 1922 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geology and Geochemistry of Epithermal Systems by : Byron R. Berger
Download or read book Geology and Geochemistry of Epithermal Systems written by Byron R. Berger and published by . This book was released on 1985 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Composites by : George Lubin
Download or read book Handbook of Composites written by George Lubin and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of advanced composites, tion. Forecasts indicate that the potential spanning a brief period from inception to usage in automobiles in the early 1990's will application of only 15 to 20 years, epitomizes amount to millions of pounds of advanced the rapidity with which a generation's change composites. in the state-of-the-art can take place. This is in We find ourselves in a peculiar position. marked contrast to past history, in which it The hardware capability is progressing so has usually required 25 years or more of rapidly that the knowledge and familiarity of research before a new structural material was the designer can hardly keep pace. We have an technologically ready. obligation now not just to mature this ad In the mid-1950's the U.S. Air Force identi vanced technology and its applications, but fied the promise for early application of a new also to communicate the state-of-the-art to the class of materials-advanced composites designer in a form in which it can be applied and established its feasibility by the fabrication readily to practical structures. I believe that of raw fiber with exceptional strength- and this book, Handbook of Composites, will modulus-to-weight ratios. The practical fabrica clearly provide a portion of this missing link.
Book Synopsis Advances in Molten Slags, Fluxes, and Salts by : Ramana Reddy
Download or read book Advances in Molten Slags, Fluxes, and Salts written by Ramana Reddy and published by Springer. This book was released on 2017-01-10 with total page 1373 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection focuses on ferrous and non-ferrous metallurgy where ionic melts, slags, fluxes, or salts play important roles in industrial growth and economy worldwide. Technical topics included are: thermodynamic properties and phase diagrams and kinetics of slags, fluxes, and salts; physical properties of slags, fluxes, and salts; structural studies of slags; interfacial and process phenomena involving foaming, bubble formation, and drainage; slag recycling, refractory erosion/corrosion, and freeze linings; and recycling and utilization of metallurgical slags and models and their applications in process improvement and optimization. These topics are of interest to not only traditional ferrous and non-ferrous metal industrial processes but also new and upcoming technologies.
Download or read book Silica written by Peter J. Heaney and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 29 of Reviews in Mineralogy provides an updated silica review which focuses on the most recent developments. This book describes the crystal structures and phase transitions of silica and its stuffed derivatives; bridges the relationship between the microstructural character of real silica minerals and the behavior of silica in the geological environment; covers Quantum mechanical considerations of the Si-O bond; shows how calculations based upon first-principles theory can explain and predict silica transitions at high temperatures and pressures; covers spectroscopic analyses of silica and how they reveal vibrational behaviors in response to variations in temperature, pressure, and composition and finally details the uses of silica for industrial purposes.
Book Synopsis Quartz and Silica as Guide to Provenance in Sediments and Sedimentary Rocks by : Jens Götze
Download or read book Quartz and Silica as Guide to Provenance in Sediments and Sedimentary Rocks written by Jens Götze and published by . This book was released on 2000 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crystalline Silica Primer written by and published by . This book was released on 1992 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Properties of Silica by : Robert Browning Sosman
Download or read book The Properties of Silica written by Robert Browning Sosman and published by . This book was released on 1927 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crystalline Silica Overview by : Sarkis G. Ampian
Download or read book Crystalline Silica Overview written by Sarkis G. Ampian and published by . This book was released on 1992 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1987, the International Agency for Research Against Cancer conducted a review of the health literature and concluded that crystalline silica was a probable human carcinogen. As a result of this finding, OSHA was required to regulate crystalline silica under its Hazard Communication Standard (HCS). The standard requires that all materials handled by OSHA-regulated facilities be labeled according to the requirements of HCS and that workers receive proper training on the handling of the material if the crystalline silica content equals or exceeds 0.1 weight percent (0.1%). MSHA currently is considering enacting its own HCS. This will be similar to OSHA's HCS. If the standard is enacted, most mineral producers will have to determine the respirable monitor filter and bulk crystalline silica contents of their ores and products so that workers and/or customers will know whether they are in compliance with the 0.1% HCS and/ or the OSHA permissible exposure level (PEL) of 50 micro-g for an 8-hour workday for respirable crystalline silica as determined from monitor samples. Two major concerns with the HCS are the widespread occurrence of crystalline silica in nature and the suitability of current technology for routinely determining crystalline silica concentrations at the 0.1% HCS level. Most ores are extracted from silica-bearing deposits, and silica is a common constituent of rocks and soils. OSHA's HCS will have the greatest impact on the producers of crushed stone, diatomite, dimension stone, gravel, industrial sand, perlite, pumice, pyrophyllite, sand, and talc because these materials frequently are shipped directly from the mill to the customer. MSHA's HCS would affect nearly all mineral producers. Those producers that have crystalline silica present in concentrations near the 0.1% cutoff point will have the most difficulty with the analysis. Crystalline silica can be quantified at the 0.1% level by X-ray difractometry in simple systems containing one, two, and possibly three minerals if (l) none of the accessory minerals has X-ray diffraction reflections that coincide or overlap with those of crystalline silica and (2) the standard has a particle size distribution and crystallinity similar to those of the sample. In some instances, it may not be possible to determine the crystalline silica content of a sample with any degree of certainty using the recommended regulatory protocol. In all cases, it is recommended that a qualified mineralogist identify the minerals in a sample prior to any regulatory analysis. Additionally, the uncertainty as to whether some silica polymorphs should be classified as crystalline or noncrystalline and the suitability of metastable high-temperature standards, such as cristobalite and tridymite, for regulatory analysis at ambient temperatures should be addressed further. This overview is written both to highlight these problems and to serve as a guide for analysts, regulators, and industry personnel who are involved in the crystalline silica issue. It also covers some of the difficulties and/or shortcomings in quantifying crystalline silica, such as the ubiquitous mineral quartz, in the workplace.
