Process for producing a fused reducing bath for descaling

Claim 2

A PROCESS FOR PRODUCING A REDUCING BATH FOR THE DESCALING OF METAL OXIDES ON THE SURFACE OF A METAL ARTICLE WHEREIN THE REDUCING BATH IS FORMED IN A METAL CONTAINER HAVING THEREIN A SOURCE OF POSITIVE AND NEGATIVE CURRENT SEPARATED FROM EACH OTHER BY A DIAPHRAGM THEREBY FORMING AN ANODE ZONE AND A CATHODE ZONE COMPRISING IMPOSING A DECOMPOSITION VOLTAGE THROUGH A MOLTEN SALT MIXTURE WITHIN SAID CONTAINER, SAID MOLTEN SALT MIXTURE BEING COMPRISES OF A SUBSTANTIALLY ANHYDROUS MIXTURE OF AT LEAST ABOUT THREE PERCENT ALKALI-METAL SULFATE IN A MAJOR PROPORTIONOF ALKALI-METAL HYDROXIDE, REDUCING SAID ALKALI-METAL SULFATE, MAINTAINING THE REDUCED ALKALIMETAL SULFATE IN SAID CATHODE ZONE, THEREBY PRODUCING A REDUCING BATH OF ALKALI-METAL HYDROXIDE AND REDUCED ALKALI--METAL SULFATE SELECTED FROM THE GROUP CONSISTING OF ALKALI-METAL SULFITES, ALKALI-METAL DITHIONITES, ALKALIMETAL THIOSULFATES, ALKALI-METAL PYROSULFITES, ALKALI-METAL SULFIDES AND MIXTURES THEREOF.

Claim 3

A PROCESS FOR THE DESCALING OF METAL OXIDES ON THE SURFACE OF A METAL ARTICLE IN A REDUCING BATH WHEREIN THE REDUCING BATH IS FORMED IN A METAL CONTAINER HAVING THEREIN A SOURCE OF POSITIVE AND NEGATIVE CURRENT SEPARATED FROM EACH OTHER BY A DIAPHRAGM THEREBY FORMING AN ANODE ZONE AND A CATHODE ZONE COMPRISING IMPOSING A DECOMPOSITION VOLTAGE THROUGH A MOLTEN SALT MIXTURE WITHIN SAID CONTAINER, SAID MOLTEN SALT MIXTURE BEING COMPRISED OF A SUBSTANTIALLY ANHYDROUS MIXTURE OF AT LEAST THREE PERCENT ALKALI-METAL SULFATE IN A MAJOR PROPORTION OF ALKALI-METAL HYDROXIDE, REDUCING SAID ALKALI-METAL SULFATE THEREBY PRODUCING A REDUCING BATH OF ALKALI-METAL HYDROXIDE AND REDUCED ALKALI-METAL SULFATE SELECTED FROM THE GROUP CONSISTING OF ALKALI-METAL SULFITES, ALKALI-METAL DITHIONITES, ALKAI-METAL THIOSULFATES, ALKALI-METAL PYROSULFITES, ALKALI-METAL SULFIDES AND MIXTURES THEREOF IN SAID CATHODE ZONE, PASSING INTO SAID CATHODE ZONE OF SAID MOLTEN SALT MIXTURE CONTAINING SAID REDUCED ALKALI-METAL SULFATE, A METAL ARTICLE HAVING ON ITS SUFACE METAL OXIDES, REACTING SAID METAL OXIDES WITH SAID REDUCED ALKALI-METAL SULFATES, THEREBY REDUCING SAID OXIDES AND SUBSEQUENTLY WITHDRAWING SAID METAL ARTICLE FROM SAID MOLTEN SALT MIXTURE.

Claim 4

A PROCESS FOR THE DESCALING OF METAL OXIDES ON THE SURFACE OF A METAL ARTICLE IN A REDUCING BATH WHEREIN THE REDUCING BATH IS FORMED IN A METAL CONTAINER HAVING THEREIN A SOURCE OF POSITIVE AND NEGATIVE CURRENT SEPARATED FROM EACH OTHER BY A DIAPHRAGM THEREBY FORMING AN ANODE ZONE AND A CATHODE ZONE COMPRISING IMPOSING A DECOMPOSITION VOLTAGE THROUGH A MOLTEN SALT MIXTURE WITHIN SAID CONTAINER, SAID MOLTEN SALT MIXTURE BEING COMPRISED OF A SUBSTANTIALLY ANHYDROUS MIXTURE OF AT LEAST THREE PERCENT ALKALI-METAL SULFATE IN A MAJOR PROPORTION OF ALKALI-METAL HYDROXIDE, REDUCING SAID ALKALI-METAL SULFATE THEREBY PRODUCING A REDUCING BATH OF ALKALI-METAL HYDROXIDE AND REDUCED ALKALI-METAL SULFATE SELECTED FROM THE GROUP CONSISTING OF ALKALI-METAL SULFITES, ALKALI-METAL DITHIONITES, ALKAI-METAL THIOSULFATES, ALKALI-METAL PYROSULFITES, ALKALI-METAL SULFIDES AND MIXTURES THEREOF IN SAID CATHODE ZONE, PASSING INTO SAID CATHODE ZONE OF SAID MOLTEN SALT MIXTURE CONTAINING SAID REDUCED ALKALI-METAL SULFATE, A METAL ARTICLE HAVING ON ITS SUFACE METAL OXIDES, REACTING SAID METAL OXIDES WITH SAID REDUCED ALKALI-METAL SULFATES, THEREBY REDUCING SAID OXIDES AND SUBSEQUENTLY WITHDRAWING SAID METAL ARTICLE FROM SAID MOLTEN SALT MIXTURE.

Claim 5

A PROCESS ADAPTED TO PROTECT THE COMPONENT ELEMENTS OF A SUBSTANTIALLY ANHYDROUS ELECTROHEMICAL DESCALING SYSTEM FROM CORROSION, SAID DESCALING SYSTEM BEING A MOLTEN BATH COMPRISING A MAJOR PROPORTION OF AN ALKALIMETAL HYROXIDE IN A METAL CONTAINER HAVING THEREIN ANODE AND CATHODE MEANS COMPRISING ELECTRICALLY CONNECTING SAID ANODE AND CATHODE MEANS OF AN ELECTROCHEMICAL DESCALING SYSTEM TO A PRIMARY SOURCE OF DIRECT ELECTRICAL CURRENT, ELECTRICALLY CONNECTING THE ELEMENTS TO BE PROTECTED TO A POSITIVE POLE OF A SECONDARY SOURCE OF DIRECT ELECTRICAL CURRENT, ELECTRICALLY CONNECTING THE NEGATIVE POLE OF SAID SECONDARY SOURCE OF ELECTRICAL CURRENT TO SAID CATHODE MEANS, PASSING A PRIMARY AND SECONDARY ELECTRICAL CURRENT THROUGH SAID CATHODE TO SAID ANODES, AND MAINTAINING SAID SECONDARY CURRENT TO SAID ELEMENTS TO BE PROTECTED SUBSTANTIALY LESS THAN THE PRIMARY CURRENT TO SAID ANODE MEANS OF SAID ELECTROCHMICA DESCALING SYSTEM.

Claim 6

A PROCESS ADAPTED TO PROTECT THE COMPONENT ELEMENTS OF A SUBSTANTIALLY ANHYDROUS ELECTROHEMICAL DESCALING SYSTEM FROM CORROSION, SAID DESCALING SYSTEM BEING A MOLTEN BATH COMPRISING A MAJOR PROPORTION OF AN ALKALIMETAL HYROXIDE IN A METAL CONTAINER HAVING THEREIN ANODE AND CATHODE MEANS COMPRISING ELECTRICALLY CONNECTING SAID ANODE AND CATHODE MEANS OF AN ELECTROCHEMICAL DESCALING SYSTEM TO A PRIMARY SOURCE OF DIRECT ELECTRICAL CURRENT, ELECTRICALLY CONNECTING THE ELEMENTS TO BE PROTECTED TO A POSITIVE POLE OF A SECONDARY SOURCE OF DIRECT ELECTRICAL CURRENT, ELECTRICALLY CONNECTING THE NEGATIVE POLE OF SAID SECONDARY SOURCE OF ELECTRICAL CURRENT TO SAID CATHODE MEANS, PASSING A PRIMARY AND SECONDARY ELECTRICAL CURRENT THROUGH SAID CATHODE TO SAID ANODES, AND MAINTAINING SAID SECONDARY CURRENT TO SAID ELEMENTS TO BE PROTECTED SUBSTANTIALY LESS THAN THE PRIMARY CURRENT TO SAID ANODE MEANS OF SAID ELECTROCHMICA DESCALING SYSTEM.