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The ZEBRA battery is a type of rechargeable molten salt battery based on commonly available and low-cost materials – primarily nickel metal, the sodium and chloride from conventional table salt, as well beta-alumina solid electrolyte. It is technically known as the sodium–nickel–chloride battery, and sometimes as a sodium–metal–halide ...
A lower-temperature [11] variant of molten-salt batteries was the development of the ZEBRA (originally, "Zeolite Battery Research Africa"; later, the "Zero Emissions Batteries Research Activity") battery in 1985, originally developed for electric vehicle applications. [12] [13] The battery uses NaNiCl 2 with Na +-beta-alumina ceramic ...
Invention of the sodium-scandium lamp chemistry which continues to set the standard for metal halide lighting all over the world. [8] 1968 — The Flashcube; Invention of The Flashcube allowed still cameras to take four images in succession. It had four electrically fired flash bulbs with an integral reflector in a compact cube-shaped arrangement.
SA Metal Group is South Africa’s oldest and one of its largest metal recycling companies. [1] Founded by Wolfe Barnett (1886–1946) in 1919 it has remained a family business into the fourth generation. The company operates from over ten sites around South Africa collecting and processing scrap metals.
Metal prices are the prices of metal as a commodity that are traded in bulk at a predefined purity or grade. Metal can be split into three major categories, precious metals, industrial metals and other metals. Precious metals and industrial metals are priced by trading of those metals on commodities exchanges. [1]
Like other gas-discharge lamps such as the very-similar mercury-vapor lamps, metal-halide lamps produce light by ionizing a mixture of gases in an electric arc.In a metal-halide lamp, the compact arc tube contains a mixture of argon or xenon, mercury, and a variety of metal halides, such as sodium iodide and scandium iodide. [7]
Pages in category "Metal companies of South Africa" The following 3 pages are in this category, out of 3 total. This list may not reflect recent changes. E.
South32 has operations in Australia, South Africa, Mozambique, Colombia and the United States. In addition it has investments in an integrated aluminium business in Brazil and a copper and molybdenum mine in Chile.