Oven for production of magnesium

Claim 1

IN A ROTARY OVEN FOR THE RECOVERY OF MAGNESIUM, OF THE TYPE COMPRISING AN INNER REACTION VESSEL; AN OUTER VESSEL ENCLOSING THE INNER VESSEL; ELECTRICAL INSULATING MENAS AND HEAT INSULATING MEANS IN THE SPACE BETWEEN SAID VESSELS, SECURING SAID VESSELS IN SPACED RELATIONSHIP TO ONE ANOTHER; AN ELECTRICAL RESISTANCE MEANS FOR HEATING THE OVEN, WITH ELECTRICAL CONNECTIONS FOR A LEAD-IN TO THE WALL OF SAID INNER VESSEL CONSISTING OF A CYCINDERICAL VACUUM-TIGHT SAID INNER VESSEL CONSISTING OF A CYLINDERICAL VACUUMTIGHT TUBE BEING AN ELECTRICAL CONDUCTOR, A FIRST VACUUM COMPARTMENT AT THE INLET END OF SAID TUBE FOR ADMITTING MAGNESIUM THERETO, A SECOND VACUUM COMPARTMENT AT THE OUTLET END OF SAID TUBE FOR DISCHARGING MAGNISUM, WHIC HAS BEEN THERMICALLY TREATED, FROM AID TUBE, AMD MEANS FOR EVACUATING THE INSULATION-FILLED SPACE BETWEEN SAID INNER VESSEL AND SID OUTER VESSEL.