On the manufacture of Mg(OH)2 from sea water, brine or. bitter and alkali, waste lime from acetylene generator was utilized as alkali raw material instead of slaked lime. In part 1, pilot plant and process of manufacturing Mg(OH)2 and quality of the product were described. Results of chemical analysis of the prodct were as follows, ignition loss 34.47%, CaO 3.74%, insoluble matter for HCI 0.76%, Fe2O3+Al2O8 1.93% and MgO 58.27%.
