Добрый день, Коллеги. Важное сообщение, просьба принять участие. Музей Ферсмана ищет помощь для реставрационных работ в помещении. Подробности по ссылке
This paper presents a brief overview of some IRGIREDMET advances in gold hydrometallurgy. Original impulse-percolation technology and equipment for intensive cyanidation of gravity concentrates have been developed and introduced into industrial practice by IRGIREDMET since 1980s (RF Patents N1593250). The process is based on leaching using special hydrodynamic and reagent conditions providing high dissolution rate for coarse gold particles. Gold and silver are precipitated from pregnant solution by cementation or electrowinning. There was also proposed an improved cementation method using zinc in a contact with electrically conductive material.
High-pressure mineral physics is a field that is strongly driven by the development of new technology. Fifty years ago, when experimentally achievable pressures were limited to just 25 GPa, little was known about the mineralogy of the Earth’s lower mantle. Silicate perovskite, the likely dominant mineral of the deep Earth, was identified only when the high-pressure techniques broke the pressure barrier of 25 GPa in the 1970s. However, as the maximum achievable pressure reached beyond 1 Megabar (100 GPa) and even to the pressure of Earth’s core on minute samples, new discoveries were increasingly fostered by the development of new analytical techniques and improvements in sensitivity and precision of existing techniques.
This Special Publication deals with some of the themes treated during the XVI Deformation Rheology and Tectonics Conference, held in Milano on 27–29 September 2007, and analysed in depth during the workshop, held in Oropa-Biella on 29 September–2 October 2007. A preconference excursion was held on the Monviso metaophiolites and Dora–Maira UHP continental crust (23–26 September 2007).
In this book we decided to attach the permil sign (‰) to all Li isotopic quantities. One way of viewing stable isotopes denoted by δ is that the arithmetic sets the results as being part-per-thousand quantities, so to place the ‰ on a value is redundant. However, this implies a certain familiarity from the reader. Our decision regarding the ‰ in this volume was guided by the potential that the audience may include those not so steeped in the thinking of stable isotopes. This calls to mind a historical note regarding Li isotopes. Readers of the early literature on the subject (beginning with Chan in 1987) will find papers that use δ6Li. Prior to 2000, using the now-accepted δ7Li notation was viewed as an unwanted usurpation by at least one prominent geochemist. Nevertheless, being clear is important, and although δ7Li was not the first notation employed, it follows stable isotope convention. We find that students have a hard enough time understanding isotope geochemistry, so to oppose the notation used in virtually all systems (positive values are isotopically heavier than negative values) invites confusion. Hence, our use of the ‰ is a further step to make this compilation clear for all.
Mineral resources exploration and mining restoration technology Semi-industrial test research on beneficiation of a lead-zinc ore with high oxidation rate in southern Shaanxi J. J. Wu, Q. Nie, H.X. Dai, P. Lu, L. Ma & WH. Li Application progress of reversed-phase emulsion polymerization system in oil and gas field development K. Xu, Y. Shi, J Chang & Y Li Review of simultaneous hydraulic fracturing technology and field application X. Wu, L.Y. Mu, K. Ning, Y. Qiao, G.H. Yuan, L.T Shang & S.L. Zhang Practical research on the application of inflow-control technology in desert oilfield D.X. Duan, F. Qian, N. Jing, X.Y. Wang, C. Zhou, Q.Y. Gao, K. Ning &X. Wu Research on the optimization of the re-open sequence of oil producers in the process of oilfield production resuming H.Y. Lyu, M.FLiu & R. Wang
The Tenth International Conference on Molten Slags, Fluxes and Salts (MOLTEN16) was held in Seattle, Washington, USAfromMay 22-25,2016 and organized by TMS (The Minerals, Metals & Materials Society). The conference purpose was to provide an opportunity for scientists and engineers to share their new research findings, innovations, and industrial technological developments. The conference also aligns quite well with the TMS strategic goal to sustain and grow the core innovation in process engineering and to develop novel materials. The organizers are pleased to conclude that the set strategic goals were met and a very high-quality technical program with the participation of expert researchers in the field was held. <...>
The Global Optimiser used by Whittle Consulting has gone through three major versions to date. The first was based on the Milawa optimisation algorithm; it worked, but had many shortcomings. The second, known internally as ProberA, had a different approach to optimisation in that it used a series of random starting points and found the nearest local NPV maximum to each.
Geochemistry has been defined as "the science concerned with chemistry of the earth, as a whole, and its component parts" . More specifically, geochemistry deals with the distribution and movement of chemical elements within the earth in both time and space. Geochemistry is, at one and the same time, both more restricted and also more extensive in scope than geology.
The second volume of this series consists of three parts. Part I focuses on the research on intracrystalline reactions. This work, which began nearly two decades ago, is critically reviewed by Ghose and Ganguly in Chapter 1. Besides the review, the authors include some of their previously unpublished work to demonstrate how future research could aid in obtaining data on thermodynamics of solid solutions and in understanding the cooling history of igneous and metamorphic rocks. The latter is also the theme adopted by Kretz in the second chapter, which examines the redistribution of Fe and Mg in coexisting silicates during cooling. Chapter 3 contains new data on Fe-Mg distribution in clinopyroxenes. Dal Negro and his co-authors have selected a series of clinopyroxenes from volcanic rocks and present site occupancy data on several clinopyroxenes of intermediate compositions. The data set has not been published before and is the first of its kind.
It is very common to find that in mineral synthesis experiments the crystals that form first have disordered cations, even when the synthesis conditions are well within the stability field of the ordered state. Some examples are the crystallization of albite from glass starting material (MacKenzie, 1957) or a flux (Woensdregt, 1983), cordierite from glass (Schreyer and Schairer, 1961; Putnis, 1980a), and plagioclase from glass (Eberhard, 1967; Kroll and Muller, 1980).
