Optimization And Characterization Of Magnesium Chloride Production From Magnesium Carbonate Using Hcl

The objective of the study was, Optimization and Characterization of Magnesium ChloridernProduction from locally available Magnesium Carbonate using HCl. The reaction of magnesiternin aqueous hydrochloric acid solution was studied in a batch reactor. Complexometric methodrnwas used for chemical analysis using EDTA. According to result obtained magnesite hasrncomposition of: 46.77% MgO, 0.78% SiO2, 3.03% CaO, 0% Fe2O3, 0.2% Al2O3, 49.12%L.O.Irnand the maximum amount of MgCO3 that could possibly be present in the sample is 94.4%. Thernexperimental design was done by using the Design Expert 7.0.0 software three levels; threernfactor general factorial design with full type in the study. The experimental parameters were,rnacid concentration, liquid to solid ratio and reaction time. The results showed that optimumrnparameters were: 180 min reaction time, 7M acid concentration and 2.07ml/g liquid-to-solidrnratio. Under these optimum conditions, the maximum magnesium chloride yield was 94%w/w. Inrncontrast, the minimum magnesium chloride yield was 58% w/w at 4M acid concentration, 1.88rnml/g liquid to solid ratio and 60 min reaction time.

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