METHOD AND SYSTEM FOR EXTRACTING RED-MUD LUMPS FROM SLURRY
First Claim
1. A filtering arrangement for extracting a plurality of red-mud lumps from a slurry, said filtering arrangement comprising:
- one or more slurry storage chamber arrangements adapted to receive a slurry mixture, wherein said slurry mixture comprises said slurry and one or more de-watering agents in a pre-determined quantity, wherein said slurry resulting from alkaline digestion of bauxite and having a plurality of red-mud particles dispersed in an aqueous content;
one or more filter chamber arrangements adapted to filter said aqueous content from said slurry mixture, wherein said slurry mixture is received from said one or more slurry storage chamber arrangements by a first physical force at a first pre-defined pressure to extract said plurality of red-mud lumps, wherein said plurality of red-mud lumps having a moisture content of less than 18 percent; and
one or more water squeezing chamber arrangements adapted to apply a second physical force at a second pre-defined pressure to said slurry mixture, wherein said one or more water squeezing chamber arrangements exerts said second physical force by directing a stream of water on said slurry mixture in said filtering arrangement, wherein a difference between said second pre-defined pressure and said first pre-defined pressure is in a range of 3-6 bars.
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Accused Products
Abstract
The present invention provides a method and system for extracting a plurality of red mud lumps from a slurry. The method and system includes separating an aqueous content from the slurry by simultaneous action of one or more de-watering agents and a physical force, and extracting the plurality of red-mud lumps having a moisture content of less than 18 percent from a slurry mixture. The separating of the aqueous content from the slurry includes feeding the slurry mixture to a filtering arrangement, exerting a first physical force to the slurry mixture in the filtering arrangement; and exerting a second physical force to the slurry mixture in the filtering arrangement. The slurry mixture includes the slurry and the one or more de-watering agents in a pre-determined quantity. The filtering arrangement is utilized for the extracting of the plurality of red-mud lumps from the slurry.
6 Citations
20 Claims
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1. A filtering arrangement for extracting a plurality of red-mud lumps from a slurry, said filtering arrangement comprising:
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one or more slurry storage chamber arrangements adapted to receive a slurry mixture, wherein said slurry mixture comprises said slurry and one or more de-watering agents in a pre-determined quantity, wherein said slurry resulting from alkaline digestion of bauxite and having a plurality of red-mud particles dispersed in an aqueous content; one or more filter chamber arrangements adapted to filter said aqueous content from said slurry mixture, wherein said slurry mixture is received from said one or more slurry storage chamber arrangements by a first physical force at a first pre-defined pressure to extract said plurality of red-mud lumps, wherein said plurality of red-mud lumps having a moisture content of less than 18 percent; and one or more water squeezing chamber arrangements adapted to apply a second physical force at a second pre-defined pressure to said slurry mixture, wherein said one or more water squeezing chamber arrangements exerts said second physical force by directing a stream of water on said slurry mixture in said filtering arrangement, wherein a difference between said second pre-defined pressure and said first pre-defined pressure is in a range of 3-6 bars. - View Dependent Claims (2, 3, 4, 5, 6, 13, 14, 15)
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7. A method for extracting a plurality of red-mud lumps from a slurry, said slurry resulting from alkaline digestion of bauxite and having a plurality of red-mud particles dispersed in an aqueous content, said method comprising:
separating said aqueous content from said slurry by simultaneous action of one or more de-watering agents and a physical force, wherein said one or more de-watering agents affects at least one of surface tension and drainage of said aqueous content of said slurry and water repellent property of said plurality of red-mud particles, and wherein said separating of said aqueous content from said slurry comprises; feeding a slurry mixture to a filtering arrangement, wherein said slurry mixture comprises said slurry and said one or more de-watering agents in a pre-determined quantity, wherein said filtering arrangement being utilized for said extracting of said plurality of red-mud lumps from said slurry; exerting a first physical force to said slurry mixture at a first pre-defined pressure in said filtering arrangement; and exerting a second physical force to said slurry mixture at a second pre-defined pressure, wherein a difference between said second pre-defined pressure and said first pre-defined pressure is in a range of 3-6 bars; extracting said plurality of red-mud lumps having a moisture content of less than 18 percent from said slurry mixture. - View Dependent Claims (8, 9, 10, 11, 12)
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16. A method for extracting a plurality of red-mud lumps from a slurry, said slurry resulting from alkaline digestion of bauxite and having a plurality of red-mud particles dispersed in an aqueous content, said method comprising:
separating said aqueous content from said slurry, wherein said separating being triggered by simultaneous action of one or more de-watering agents and a physical force, wherein said one or more de-watering agents affects at least one of surface tension and drainage of said aqueous content of said slurry and water repellent property of said plurality of red-mud particles, wherein said separating of said aqueous content from said slurry comprises; supplying a slurry mixture of said slurry and said one or more de-watering agents in a pre-determined quantity, wherein said pre-determined quantity of said one or more de-watering agents is based on a moisture content of said slurry and said surface tension of said aqueous content of said slurry, wherein said filtering arrangement being utilized for said extracting of said plurality of red-mud lumps from said slurry, wherein said slurry being fed to said filtering arrangement; applying a first physical force to said slurry mixture, wherein said first physical force is applied at a first pre-defined pressure in said filtering arrangement; and exerting a second physical force to said slurry mixture, wherein said second physical force being exerted at a second pre-defined pressure, wherein a difference between said second pre-defined pressure and said first pre-defined pressure is in a range of 3-6 bars; washing a filter cloth of each of a one or more filter chamber arrangements of said filtering arrangement; and extracting said plurality of red-mud lumps having a moisture content of less than 18 percent from said slurry mixture - View Dependent Claims (17, 18, 19, 20)
Specification