Process for burning lime

Claim 1

AN APPARATUS FOR THE PRODUCTION OF LIME FROM MATERIALS CONTAINING CALCIUM CARBONATE WHICH COMPRISES A VERTICAL REACTION CHAMBER; A PERFORATED BOTTOM FOR SAID REACTION CHAMBER; A HORIZONTAL GRID IN SAID RECATION CHAMBER DIVIDING SAID CHAMBER INTO AN UPPER AND LOWER REACTION ZONE WHILE LEAVING AN OPEN SPACE OF SUBSTANTIAL CROSS SECTION IN ITS HORIZONTAL PLANE; A VERTICAL BAFFLE WITHIN SAID OPEN SPACE SAID VERTICAL BAFFLE HAVING A CROSS SECTION SO AS TO FIT SNUGLY INTO SAID OPEN SPACE AND EXTENDING OVER A SUBSTANTIAL LENGTH INTO SAID UPPER AND LOWER REACTION ZONES WITHOUT REACHING THE UPPER AND LOWER END OF SAID VERTICAL REACTION CHAMBER, TO FORM A VERTICAL OPEN PATH LEADING FROM SAID UPPER TO SAID LOWER RECATION ZONE; MEANS ADAPTED TO ADMIT FLUIDIZED FINELY DIVIDED, LIME-FORMING MATERIAL TO SAID UPPER REACTION ZONE; MEANS ADAPTED TO ADMIT A FUEL GAS AN AN OXIDIZING GAS INTO SAID LOWER REACTION ZONE, MEANS ADAPTED TO ADMIT A GAS INTO SAID VERTICAL PATH; MEANS ADAPTED TO WITHDRAW GAS UPWARDLY FROM THE UPPER PORTION OF SAID UPPER REACTION ZONE; AND MEANS ADAPTED TO WITHDRAW FLUIDIZED LIME DOWNWARDLY FROM SAID LOWER REACTION ZONE.