Process for the production of magnesium oxide from magnesium chloride hydrate

Claim 1

A PROCESS FOR PRODUCING MAGNESIUM OXIDE FROM A MAGNESIUM CHLORIDE HYDRATE-CONTAINING STARTING MATERIAL WHICH COMPRISES A TWO-STAGE OPERATION, THE FIRST STAGE COMPRISING THE STEPS OF INTRODUCING SAID MATERIAL INTO A SHAFT TYPE CHAMBER IN ATOMIZED STATE AT A PRESSRE RANGING FROM 5 TO 15 ATM., PASSING COMBUSTON GASES INTO SAID CHAMBER AT THE SAME END WITH THE MAGNESIUM CHLORIDE HYDRATE-CONTAINING MATERIAL AT THE APPROXIMATE TEMPERATURE OF 400 TO 800*C., SAID GASES CARRYING SAID ATOMIZED PARTICLES LENGTHWISE ALONG SAID CHAMBER AND CAUSING EVAPORATION OF EXCESS LIQUID THEREFROM, SEPARATING SAID DRIED MAGNESIUM CHLORIDE HYDRATE FROM SAID GASES, CONVEYING THE MAGNESIUM CHLORIDE HYDRATE INTO A DECOMPOSITION OCCURS IN A FEW INTRODUCING SIMULTANEOUSLY THEREWITH COMBUSTON GASES AT A TEMPERATURE WHEREBY DECOMPOSITION OCCURS IN A FEW SECONDS, AND SEPARATING SUBSTANTIALLY PURE MAGNESIUM ODIDE FROM THE HC1-CONTAINING GASES, THE TEMPERATURE OF THE LEAVING GASES BEING ABOUT 900-950*C.