quarta-feira, 4 de novembro de 2009

Handbook of Gold Exploration and Evaluation

E. MacDonald, "Handbook of Gold Exploration and Evaluation" Woodhead Publishing Ltd 2007 ISBN-10: 1845691752 664 Pages PDF 5 MB
Designed for geologists and engineers engaged specifically in the search for gold deposits of all types and as a reference for academics in higher schools of learning, the Handbook of Gold Exploration and Evaluation provides principles and detailed explanations that underpin the correct interpretation of day-to-day experience in the field. Problems are addressed with regard to the analysis, interpretation, and understanding of the general framework within which both primary and secondary gold resources are explored, developed, and exploited. The Handbook of Gold Exploration and Evaluation covers topics as diverse as the nature and history of gold, geology of gold ore deposits, gold deposition in the weathering environment, sedimentation and detrital gold, gold exploration, lateritic and placer gold sampling, mine planning and practice for shallow deposits, metallurgical processes and design, and evaluation, risk, and feasibility.

Handbook of Hydrothermal Technology (Materials and Processing Technology

K. Byrappa, Masahiro Haber, "Handbook of Hydrothermal Technology (Materials and Processing Technology)"Noyes Publications/William Andrew; 1st edition (January 14, 2002) English 081551445X 525 pages PDF 11.09 MB
Quartz, zeolites, gemstones, perovskite type oxides, ferrite, carbon allotropes, complex coordinated compounds and many more?all products now being produced using hydrothermal technology. Handbook of Hydrothermal Technology brings together the latest techniques in this rapidly advancing field in one exceptionally useful, long-needed volume. The handbook provides a single source for understanding how aqueous solvents or mineralizers work under temperature and pressure to dissolve and recrystallize normally insoluble materials, and decompose or recycle any waste material. The result, as the authors show in the book, is technologically the most efficient method in crystal growth, materials processing, and waste treatment. The book gives scientists and technologists an overview of the entire subject including:* Evolution of the technology from geology to widespread industrial use.* Descriptions of equipment used in the process and how it works.* Problems involved with the growth of crystals, processing of technological materials, environmental and safety issues.* Analysis of the direction of today's technology.In addition, readers get a close look at the hydrothermal synthesis of zeolites, fluorides, sulfides, tungstates, and molybdates, as well as native elements and simple oxides. Delving into the commercial production of various types, the authors clarify the effects of temperature, pressure, solvents, and various other chemical components on the hydrothermal processes.