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Hydrometallurgy Of Phosphate Rock And The Recovery Of Uranium, Fathi Habashi
Hydrometallurgy Of Phosphate Rock And The Recovery Of Uranium, Fathi Habashi
Fathi Habashi
Phosphate rock of sedimentary origin contains on the average 0.01 % uranium. Since large tonnage of this rock is used annually to produce fertilizers, this represented an important potential source of uranium. Before the discovery of rich uranium deposits this source was developed on industrial scale. The production of phosphoric acid by sulfuric acid process is at present facing the problem of disposal of gypsum; about 1.5 tons of gypsum is produced per ton of rock processed. This material contains all the radium originally present in the rock which results from the radioactive decay of uranium. As a result, phospho-gypsum …
Sir Walter Raleigh And Tar Sands, Fathi Habashi
Sir Walter Raleigh And Tar Sands, Fathi Habashi
Fathi Habashi
Petroleum is sometimes ejected from underground to form lakes contaminated with rocks. The volatile components evaporate with time leaving behind a solid mixture known as asphalt or tar sands. Lake Asphalt in Trinidad contains about 40% bitumen. Sir Walter Raleigh (ca 1554 –1618) sailed to Trinidad in search of El Dorado but he discovered the lake instead.