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- W1488293513 abstract "Experiments on the dissolution kinetics and leaching of rutile ore by hydrochloric acid have beencarried out. The influence of acid concentration, temperature, stirring speed and particlediameter on the leaching of the ore were examined. The dissolution rates were greatly influencedby the hydrogen ion concentration, temperature, stirring speed and particle diameter. Kineticdata analysis showed that the dissolution mechanism followed a diffusion controled shrinkingcore model with the surface chemical reaction as the rate controlling step. The study showed thatwith 4M HCl solution, about 82.3 % of 10g rutile ore per litre of leachant at 80oC was dissolvedwithin 120min., using 0.045-0.075mm particle diameter at a stirring speed of 360rpm. Thereaction order with respect to hydrogen ion concentration was found to be 1.0, while42.28kJ/mol was calculated for the activation energy of the dissolution process. Finally, the Xraydiffraction spectrum showed that the residual solid which amounted to 18% of the initialsolid material contained silica (a-SiO2) and are formed around the shrinking core of the unreacted material." @default.
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- W1488293513 date "2009-01-01" @default.
- W1488293513 modified "2023-10-13" @default.
- W1488293513 title "Dissolution Kinetics and Leaching of Rutile Ore in Hydrochloric Acid" @default.
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- W1488293513 doi "https://doi.org/10.4236/jmmce.2009.810068" @default.
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