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Chalcopyrite: Bioleaching Versus Pressure Hydrometallurgy, Fathi Habashi Oct 2006

Chalcopyrite: Bioleaching Versus Pressure Hydrometallurgy, Fathi Habashi

Fathi Habashi

While bioleaching of pyrite concentrates has been successfully used in industry to liberate gold from the sulfide matrix for subsequent cyanidation, the same technology cannot be recommended for leaching chalcopyrite concentrates for copper recovery. It will be shown to be uneconomical and cannot compete with pressure leaching technology.


A Short History Of Mineral Processing, Fathi Habashi Aug 2006

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 …


La Riqueza De Las Minas Y La Metalurgia, Fathi Habashi Jun 2006

La Riqueza De Las Minas Y La Metalurgia, Fathi Habashi

Fathi Habashi

An interview at the Faculty of Engineering, National Autonomous University of Mexico in Mexico City in April 2006. English translation is appended


The Beginnings Of Chemical And Metallurgical Industries In Canada, Fathi Habashi May 2006

The Beginnings Of Chemical And Metallurgical Industries In Canada, Fathi Habashi

Fathi Habashi

The only metallurgical operation in New France and the first in Canada was the Forges Saint-Maurice situated on the bank of Saint Maurice River near Trois-Rivières which is located half way between Québec City and Montréal. The story of the Forges dates back to 1667. In 1743, the Forges passed to the Royal domain and were carried on for several years in the name of the King Louis XV. At the conquest of New France in 1760, the Forge passed with other Royal properties to the British Government and were operated under military authorities. In 1883, operations ceased since other …


Travelling In Russia, Fathi Habashi Mar 2006

Travelling In Russia, Fathi Habashi

Fathi Habashi

Souvenirs of metallurgists met and places visited in the former USSR, Russia, Siberia, Ural, Buryatia, Mongolia, Armenia, Kazakhstan, and Uzbekstan during 1957- 2005


The History Of Element 43 - Technetium, Fathi Habashi Jan 2006

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