Treating slaked lime and making pigment therefrom
阅读：113发布：2022-11-16
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1. IN A METHOD FOR THE MANUFACTURE OF PIGMENT, THE IMPROVEMENT WHICH COMPRISES SUBJECTING SLAKED LIME FOR USE IN THE MANUFACTURE OF SAID PIGMENT, IN THE PRESENCE OF LIQUID WATER, SAID LIQUID WATER BEING PRESENT IN AN AMOUNT NOT LESS THAN 30% ON THE COMBINED WEIGHT OF THE SLAKED LIME AND THE LIQUID WATER, TO THE PERCUSSIVE ACTION OF PERCUSSIVE MEMBERS OF A ROTOR ELEMENT, SAID MEMBERS HAVING A PERIPHERAL VELOCITY OF NOT LESS THAN 30 FEET PER SECOND, SAID SLAKED LIME BEING PROPELLED BY SAID PERCUSSIVE MEMBERS AWAY FROM AND OUT OF THE PATH OF TRAVEL OF SAID PERCUSSIVE MEMBERS, UNTIL, BY SAID PERCUSSIVE ACTION, THE SETTLED VOLUME, MEASURED IN CUBIC CENTIMETERS, OF A SUSPENSION OF SAID SLAKED LIME AFTER SUBSTANTIALLY COMPLETE SETTLING OF THE SLAKED LIME IN A STANDARDIZED SETTLING TEST, WHEREIN 4.0 GRAMS (DRY BASIS) OF THE SLAKED LIME IS MADE UP WITH WATER TO EXACTLY 50 CUBIC CENTIMETERS IN A 2 OUNCE BOTTLE GRADUATED IN CUBIC CENTIMETERS, SHAKEN THOROUGHLY AND ALLOWED TO STAND FOR 16 HOURS, IS INCREASED NOT LESS THAN 10% OF THE ORIGINAL VALUE OF SAID TEST, SAID STANDARDIZED SETTLING TEST BEING CONDUCTED UPON A SUSPENSION PREPARED SOLELY FROM SLAKED LIME SAID WATER, SAID ORIGINAL VALUE HAVING BEEN DETERMINED UPON THE SLAKED LIME IN QUESTION SLAKED UNDER CONDITIONS OF TEMPERATURE, AGITATION AND PROPORTION OF LIME TO WATER, WHICH, FOR THE PARTICULAR LIME, PRODUCE A SLAKED LIME WITH THE GREATEST WET BULK.
12. IN A METHOD FOR THE MANUFACTURE OF PIGMENT COMPRISING CALCIUM CARBONATE, THE IMPROVEMENT WHICH COMPRISES SUBJECTING SLAKED LIME FOR USE IN THE MANUFACTURE OF SAID PIGMENT, IN THE PRESENCE OF LIQUID WATER, SAID LIQUID WATER BEING PRESENT IN AN AMOUNT NOT LESS THAN 30% ON THE COMBINED WEIGHT OF THE SLAKED LIME AND THE LIQUID WATER, TO THE PERCUSSIVE ACTION OF PERCUSSIVE MEMBERS OF A ROTOR ELEMENT, SAID MEMBERS HAVING A PERIPHERAL VELOCITY OF NOT LESS THAN 30 FEET PER SECOND, SAID SLAKED LIME BEING PROPELLED BY SAID PERCUSSIVE MEMBERS AWAY FROM AND OUT OF THE PATH OF TRAVEL OF SAID PERCUSSIVE MEMBERS, UNTIL, BY SAID PERCUSSIVE ACTION, THE SETTLED VOLUME, MEASURED IN CUBIC CENTIMETERS, OF A SUSPENSION OF SAID SLAKED LIME AFTER SUBSTANTIALLY COMPLETE SETTLING OF THE SLAKED LIME IN A STANDARDIZED SETTLING TEST, WHEREIN 4.0 GRAMS (DRY BASIS) OF THE SLAKED LIME IS MADE UP WITH WATER TO EXACTLY 50 CUBIC CENTIMETERS IN A 2 OUNCE BOTTLE GRADUATED IN CUBIC CENTIMETERS, SHAKEN THOROUGHLY AND ALLOWED TO STAND FOR 16 HOURS, IS INCREASED NOT LESS THAN 10% OF THE ORIGINAL VALUE OF SAID TEST, SAID STANDARIZED SETTLING TEST BEING CONDUCTED UPON A SUSPENSION PREPARED SOLELY FROM SLAKED LIME AND WATER, SAID ORIGINAL VALUE HAVING BEEN DETERMINED UPON THE SLAKED LIME IN QUESTION SLAKE UNDER CONDITIONS OF TEMPERATURE, AGITATION AND PROPORTION OF LIME TO WATER, WHICH, FOR THAT PARTICULAR LIME, PRODUCE A SLAKED LIME WITH THE GREATEST WET BULK, AND THEN REACTING SAID SLAKED LIME, WHICH HAS BEEN SUBJECTED TO SAID PERCUSSIVE ACTION, IN THE PRESENCE OF WATER WITH A REAGENT ADAPTED TO PRODUCE A CARBONATE WITH SAID SLAKED LIME, TO FORM SAID PIGMENT, SAID PIGMENT, IN COMPARISON WITH THE CORRESPONDING PIGMENT PRODUCED WHEN SAID SLAKED LIME IS SIMILARLY REACTED BUT WITHOUT SUBJECTING IT INITIALLY TO SAID PERCUSSIVE ACTION, BEING OF AN IMPROVED QUALITY IN RESPECT TO AT LEAST ONE OF THE PROPERTIES OF SETTLING TEST, OIL ABSORPTION, CASEIN REQUIREMENT AND GLOSS-IMPARTING QUALITY.
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