US3849233A — Method of production of granulated product

Claim 1

Independent Claim 209 words

A METHOD OF PRODUCING A GRANULATED PRODUCT FROM LIQUID SOLUTIONS OR SUSPENSIONS SAID METHOD COMPRISING ATOMIZING THE SOLUTION OR SUSPENSION IN A DOWNWARDLY DIRECTED STREAM OF A FIRST GASEOUS HEATING MEDIUM TO EFFECT PRELIMINARY DRYING OF THE THUS ATOMIZED SOLUTION OR SUSPENSION UNTIL THE MOISTURE CONTENT OF THE PARTICLES FORMED WILL BE WITHIN THE RANGE OF 5 TO 35 PERCENT, GRAGITATIONALLY SUPPLYING THE THUS PRELIMINARY DRIED PARTICLES TO A FLUIDIZED BED WHICH IS FLUIDIZED BY A SECOND GASEOUS HEATING MEDIUM FLOWING COUNTER CURRENTLY TO THE ATOMIZED STREAM, AND FINALLY DRYING THE FORMED PARTICLES IN THE FLUIDIZED BED BY THE SAID SECOND GASEOUS HEATING MEDIUM FLOWING UPWARDLY THRU SAID BED TO FORM GRANULES WITH A PRESET MOISTURE CONTENT, THE TEMPERATURE OF SAID FIRST GASEOUS HEATING MEDIUM AND THE RATIO OF ITS RATE OF FLOW TO THAT OF SAID LIQUID SOLUTION OR SUSPENSION BEING SELECTED FOR CONTROLLING THE SIZE OF THE OBTAINED GRANULES WITHIN THE RANGE OF 0.5 TO 5.0 MM, WITH A YEILD OF 90-95 PERCENT OF THE FRACTION OF THE DESIRED SIZE. SAID FIRST HEATING MEDIUM BEING SUPPLIED AT A TEMPERATURE OF 600*C TO 1200*C AND THE SECOND SAID GASEOUS HEATING MEDIUM BEING SUPPLIED AT A TEMPERATURE BELOW THE MELTING POINT OR DECOMPOSITING TEMPERATURE OF THE FINAL DESIRED PRODUCT.

Claim 2

Independent Claim 209 words

A METHOD OF PRODUCING A GRANULATED PRODUCT FROM LIQUID SOLUTIONS OR SUSPENSIONS SAID METHOD COMPRISING ATOMIZING THE SOLUTION OR SUSPENSION IN A DOWNWARDLY DIRECTED STREAM OF A FIRST GASEOUS HEATING MEDIUM TO EFFECT PRELIMINARY DRYING OF THE THUS ATOMIZED SOLUTION OR SUSPENSION UNTIL THE MOISTURE CONTENT OF THE PARTICLES FORMED WILL BE WITHIN THE RANGE OF 5 TO 35 PERCENT, GRAGITATIONALLY SUPPLYING THE THUS PRELIMINARY DRIED PARTICLES TO A FLUIDIZED BED WHICH IS FLUIDIZED BY A SECOND GASEOUS HEATING MEDIUM FLOWING COUNTER CURRENTLY TO THE ATOMIZED STREAM, AND FINALLY DRYING THE FORMED PARTICLES IN THE FLUIDIZED BED BY THE SAID SECOND GASEOUS HEATING MEDIUM FLOWING UPWARDLY THRU SAID BED TO FORM GRANULES WITH A PRESET MOISTURE CONTENT, THE TEMPERATURE OF SAID FIRST GASEOUS HEATING MEDIUM AND THE RATIO OF ITS RATE OF FLOW TO THAT OF SAID LIQUID SOLUTION OR SUSPENSION BEING SELECTED FOR CONTROLLING THE SIZE OF THE OBTAINED GRANULES WITHIN THE RANGE OF 0.5 TO 5.0 MM, WITH A YEILD OF 90-95 PERCENT OF THE FRACTION OF THE DESIRED SIZE. SAID FIRST HEATING MEDIUM BEING SUPPLIED AT A TEMPERATURE OF 600*C TO 1200*C AND THE SECOND SAID GASEOUS HEATING MEDIUM BEING SUPPLIED AT A TEMPERATURE BELOW THE MELTING POINT OR DECOMPOSITING TEMPERATURE OF THE FINAL DESIRED PRODUCT.

Claim 3

Dependent Claim 15 words

A method as claimed in claim 1 wherein said preset moisture content is 0.1-1 percent.

Claim 4

Independent Claim 199 words

A method of producing a granulated product from liquid solutions or suspensions, said method comprising atomizing the solution or suspension in a downwardly directed stream of a first gaseous heating medium to effect preliminary drying of the thus atomized solution or suspension until the moisture content of the particles formed will be within the range of 5 to 35 percent; gravitationally supplying the thus preliminarily dried particles to a fluidized bed which is fluidized by a second gaseous heating medium flowing counter currently to the atomized stream, and finally drying the formed particles in the fluidized bed by the said second gaseous heating medium flowing upwardly thru said bed to form granules with a preset moisture content, the ratio of the rates of flow of said first and second gaseous heating media being selected for controlling the size of the granules within the limits of 0.5 to 5.0 mm, with a yield of 90-95 percent of the fraction of the desired size, said first heating medium being supplied at a temperature of 600*C to 1200*C, and the second said gaseous heating medium being supplied at a temperature below the melting point or decomposition temperature of the final desired product.

Claim 5

Independent Claim 199 words

A method of producing a granulated product from liquid solutions or suspensions, said method comprising atomizing the solution or suspension in a downwardly directed stream of a first gaseous heating medium to effect preliminary drying of the thus atomized solution or suspension until the moisture content of the particles formed will be within the range of 5 to 35 percent; gravitationally supplying the thus preliminarily dried particles to a fluidized bed which is fluidized by a second gaseous heating medium flowing counter currently to the atomized stream, and finally drying the formed particles in the fluidized bed by the said second gaseous heating medium flowing upwardly thru said bed to form granules with a preset moisture content, the ratio of the rates of flow of said first and second gaseous heating media being selected for controlling the size of the granules within the limits of 0.5 to 5.0 mm, with a yield of 90-95 percent of the fraction of the desired size, said first heating medium being supplied at a temperature of 600*C to 1200*C, and the second said gaseous heating medium being supplied at a temperature below the melting point or decomposition temperature of the final desired product.

Claim 6

Dependent Claim 15 words

A method as claimed in claim 3 wherein said preset moisture content is 0.1-1 percent.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1977-11-18	1978-05-20	1978-11-19	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1981-11-18	1982-05-20	1982-11-19	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1985-11-18	1986-05-20	1986-11-19	$7700.00	Window Closed / Lapsed

Method of production of granulated product

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