b ) Camis Mining Co., Is Kuleleri, Kule 3, TR-34300, 4. Levent, IstanbulThe effects of time, CO 2 -gas-injection pressure, and bulk temperature on the precipitation of Ca 2þ ions as a precipitated calcium carbonate (PCC) from a dolomite leach solution were investigated. Precipitation periods from 1 to 7 min were examined, and experiments were run at CO 2 -injection pressures of 200 -800 kPa. Effects of bulk temperature were studied in the range from 40 to 708, and precipitation rates of PCC were determined by measuring the Ca 2þ concentrations in the initial and effluent solutions. Influences of these parameters on the subsequent incorporation of Mg 2þ ions with the precipitate are discussed in detail. Kinetic analysis of the precipitation was performed by considering the rates as a function of CO
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