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refining of platinum metals

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  • refining of platinum metals — Смотри аффинаж платиновых металлов …   Энциклопедический словарь по металлургии

  • platinum group — ▪ chemical element group Introduction       six metals, in order of increasing atomic weight, ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), and …   Universalium

  • Platinum prints — Platinum prints, also called platinotypes , are photographic prints made by a monochrome printing process that provides the greatest tonal range of any printing method using chemical development.Unlike the silver print process, platinum lies on… …   Wikipedia

  • Platinum group — The platinum group (alternatively, the platinum group metals or platinum metals) is a collective name sometimes used for six metallic elements clustered together in the periodic table. These elements are all transition metals, lying in the d… …   Wikipedia

  • platinum — /plat n euhm, plat neuhm/, n. 1. Chem. a heavy, grayish white, highly malleable and ductile metallic element, resistant to most chemicals, practically unoxidizable except in the presence of bases, and fusible only at extremely high temperatures:… …   Universalium

  • METALS AND MINING — In the Bible Six metals are mentioned in the Bible and in many passages they are listed in the same order: gold, silver, copper, iron, tin, and lead. Antimony is also mentioned. The metals are referred to in various contexts, including methods of …   Encyclopedia of Judaism

  • petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium

  • Precious metals refining — Precious metal refining is a superordinate term for the separation from noble metalliferous materials. The precious metals are won for example from used catalysts, electronics, ores or alloys. The refining is a very expensive and complex… …   Wikipedia

  • аффинаж платиновых металлов — [refining of platinum metals] многооперационный технологический процесс получения платиновых металлов высокой чистоты путем их разделения и отделения примесей. Сырье для получения платиновых металлов шлиховая Pt, концентраты анодных шламов Cu Ni… …   Энциклопедический словарь по металлургии

  • аффинаж платиновых металлов — Многооперационный технологич. процесс получения п. м. высокой чистоты путем их разделения и отделения примесей. Сырье для получения п. м. — шлиховая Pt, концентраты анодных шламов Cu Ni произв ва, лом вторичных п. м. Концентраты п. м. р… …   Справочник технического переводчика

  • gold processing — Introduction  preparation of the ore for use in various products.       For thousands of years the word gold has connoted something of beauty or value. These images are derived from two properties of gold, its colour and its chemical stability.… …   Universalium