Process for producing modified electronickel

Claim 1

THE PROCESS OF ELECTROREFINING IMPURE METALLIC NICKEL TO PRODUCE SUBSTANTIALLY PURE NICKEL CONTAINING COPPER, CARBON AND SULFUR AND HAVING GOOD ACTIVITY WHEN EMPLOYED AS ANODE IN ELECTROPLATING NICKEL FROM NICKEL ELECTROPLATING BATHS HAVING A PH UP TO 5.5 (Q.) WHICH COMPRISES ANODICALLY CORRODING AN IMPURE NICKEL ANODE TO PRODUCE AN IMPURE ELECTROLYTE CONTAINING THE IMPURITIES COPPER, ARSENIC, IRON AND LEAD, PURIFYING SAID ELECTROLYTE TO PRODUCE A PURIFIED ELECTROLYTE SUBSTANTIALLY DEVOID OF COPPER, ARSENIC, IRON AND LEAD, INTRODUCING INTO SAID PURIFIED ELECTROLYTE A SUFFICIENT AMOUNT OF SULFUR DIOXIDE TO PROVIDE A CONCENTRATION OF ABOUT 0.1 TO 0.15 GRAM PER LITER OF SULFUR DIOXIDE, A SUFFICIENT AMOUNT OF AN ELECTROLYTE-SOLUBLE COPPER SALT TO PROVIDE A CONCENTRATION OF ABOUT 0.01 TO 0.03 GRAM PER LITER OF COPPER, AND A SUFFICIENT AMOUNT OF ACETYLENE TO PROVIDE A CONCENTRATION OF ABOUT 0.001 TO 0.005 GRAM PER LITER THEREIN, AND ELECTRODEPOSITING SUBSTANTIALLY PURE NICKEL FROM SAID ELECROLYTE IN THE PRESENCE OF SAID AMOUNTS OF SULFUR DIOXIDE, COPPER AND ACETYLENE WITHOUT NEUTRALIZING THE EFFECTS OF SAID SULFUR DIOXIDE UPON THE ELECTROLYTE PH WHILE DEPOSITING SULFUR WITHIN THE RANGE OF ABOUT 0.1% TO 0.15%, COPPER WITHIN THE RANGE OF ABOUT 0.05% TO 0.15% AND CARBON WITHIN THE RANGE OF ABOUT 0.01% TO 0.04% IN SAID NICKEL.