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A Short History Of Mineral Processing, Fathi Habashi
A Short History Of Mineral Processing, Fathi Habashi
Fathi Habashi
Crushing and grinding of ores and their beneficiation by washing away gangue minerals has been practiced since ancient times. Primitive crushing was done by hand pounding the ore with a hard stone then by using metallic hammers. The mortar and pestle was mechanized using a lever and when the size of operations increased in the middle ages, the stamp mill was introduced. The grindstone played an important role in grinding of ores. Panning for gold and hand sorting of minerals were two old methods of separation, now gave way to modern techniques. Flotation started in the middle of the nineteenth …
The History Of Element 43 - Technetium, Fathi Habashi
The History Of Element 43 - Technetium, Fathi Habashi
Fathi Habashi
Comments about the controversial discovery of technetium by Segrè and Perrier versus masurium by Ida and Walter Noddack