Process of producing metals from metal oxides

Claim 1

THE PROCESS OF PRODUCING CHARGE PELLETS CHARACTERIZED BY THE FACT OF HAVING A POINT PRESSURE STRENGTH INITIALLY OF AT LEAST 3 KG. AND, UPON THREE DAYS'' STORAGE, OF AT LEAST 15 KG., AND FURTHER CHARACTERIZED BY THE FACT THAT UPON HEATING OF THE PELLETS TO 700*C. THE POINT PRESSURE STRENGTH THEREOF INCREASES SUBSTANTIALLY, WHICH COMPRISES THE STEPS OF MIXING TOGETHER FINELY DIVIDED CHARGE MATE RIAL WHICH CAN BE REDUCED WITH CARBON AND WHICH IS SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF IRON OXIDE, IRON OXIDE COMBINED WITH ALLOYING INGREDIENTS AND CALCIUM COMPOUNDS, WITH A FINELY DIVIDED BITUMINOUS BINDING AGENT HAVING ANEFFECTIVE SWELLING INDEX OF AT LEAST 4.5 AND COMPRISING IN MAJOR PART FINELY-DIVIDED COAL, MIXING INTO THE MIXTURE SO FORMED FROM ABOUT 3% TO ABOUT 10% BY WEIGHT OF A WATER-ACTIVATA BLE HYDRAULIC CEMENT AND THEN PELLETIZING THE FINAL MIXTURE WITH THE AID OF WATER.