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This paper deals with the mechanism of diaselution reaction kinetics of minerals inaqueous solution based on the theory of surface chemistry. Surface chemical catalysis would leadto an obvious decrease in active energy of dissolution reaction of minerals. The dissolution rateof minerals is controlled by surface absorption, surface exchange reaction and desorption, de-pending on pH of the solution and is directly proportional to anθH+. When controlled by surfaceadsorption, i. e., nθ= 1, the dissolution rate will decrease with increasing pH; when controlledby surface exchange reaction, i. e., n θ= 0, the dissolution rate is independent of pH; whencontrolled by desorption, nθ is a positive decimal between 0 and 1 in acidic solution and a neg-ative decimal between - 1 and 0 in alkaline soution. Dissolution of many minerals is controlledby surface adsorption and/or surface exchange reactions under acid conditions and by desorptionunder alkaline conditions.
This paper deals with the mechanism of diaselution reaction kinetics of minerals in aqueous solution based on the theory of surface chemistry. Surface chemical catalysis would lead to an obvious decrease in active energy of dissolution reaction of minerals. The dissolution rate of minerals is controlled by surface absorption, surface exchange control and desorption, de-pending on pH of the solution and is directly proportional to anθH +. When controlled by surface adsorption, ie, nθ = 1, the dissolution rate will decrease with increasing pH; when controlledby surface exchange reaction, ie, n θ = 0, the dissolution rate is independent of pH; whencontrolled by desorption, nθ is a positive decimal between 0 and 1 in acidic solution and a neg-ative decimal between -1 and 0 in alkaline soution. Dissolution of many minerals is controlledby surface adsorption and / or surface exchange reactions under acid conditions and by desorptionunder alkaline conditions.