Means and methods of supplying heat to grinding mills

Claim 1

A METHOD OF COMMINUTING SOLID MATERIAL WITHIN A GRINDING MILL BY UTILIZING AN ELASTIC FLUID AND COMPRISING THE STEPS OF TREATING THE SAME TO PROVIDE IT WITH DESIRED CHARACTERISTICS, INTRODUCING SAID TREATED ELASTIC FLUID TOGETHER WITH SOLID FEED MATERIAL INTO THE FEED ENTRANCE OF THE MILL WHICH IS SUBSTANTIALLY UNPROTECTED RELATIVE TO THE PASSAGE OF SAID SOLID MATERIAL AND UNTREATED SURROUNDING ELASTIC ATMOSPHERIC FLUID, CAUSING SAID ELASTIC FLUID TO FLOW THROUGH SAID MILL, WITHDRAWING SAID ELASTIC FLUID FROM THE EXIT OF THE MILL, AND REGULATING THE PRESSURE OF THE TREATED ELASTIC FLUID DISCHARGED INTO SAID UNPROTECTED FEED ENTRANCE OF THE MILL TO PRODUCE AT SAID UNPROTECTED ENTRANCE A PREDETERMINED PRESSURE OPERABLE TO CONTROL THE INLET OF ANY OF THE SURROUNDING UNTREATED ATMOSPHERIC ELASTIC FLUID TO SAID MILL THROUGH SAID UNPROTECTED FEED ENTRANCE AS DESIRED.

Claim 2

A METHOD OF COMMINUTING SOLID MATERIAL WITHIN A GRINDING MILL BY UTILIZING AN ELASTIC FLUID AND COMPRISING THE STEPS OF TREATING THE SAME TO PROVIDE IT WITH DESIRED CHARACTERISTICS, INTRODUCING SAID TREATED ELASTIC FLUID TOGETHER WITH SOLID FEED MATERIAL INTO THE FEED ENTRANCE OF THE MILL WHICH IS SUBSTANTIALLY UNPROTECTED RELATIVE TO THE PASSAGE OF SAID SOLID MATERIAL AND UNTREATED SURROUNDING ELASTIC ATMOSPHERIC FLUID, CAUSING SAID ELASTIC FLUID TO FLOW THROUGH SAID MILL, WITHDRAWING SAID ELASTIC FLUID FROM THE EXIT OF THE MILL, AND REGULATING THE PRESSURE OF THE TREATED ELASTIC FLUID DISCHARGED INTO SAID UNPROTECTED FEED ENTRANCE OF THE MILL TO PRODUCE AT SAID UNPROTECTED ENTRANCE A PREDETERMINED PRESSURE OPERABLE TO CONTROL THE INLET OF ANY OF THE SURROUNDING UNTREATED ATMOSPHERIC ELASTIC FLUID TO SAID MILL THROUGH SAID UNPROTECTED FEED ENTRANCE AS DESIRED.