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B) A centrifuge with cylindrical bowl with diameter 650 mm is to be used for separation of solid particle from a slurry. The depth of the bowl is 390 mm with thickness of the liquid layer 80 mm .12400 litres of slurry must be treated every hour. the other characteristics are : Specific gravity of liquid =1.3 , specific gravity of solid = 1.7 and critical diameter of the particles = 35 um, viscosity of liquid = 2 cp and the speed of centrifuge = 1500 rpm and recovery is 50%. Calculate segma factor for the centrifuge, If it has decided to increase the recovery to 75% using the same centrifuge if the flow rate is reduced to 100 1/min, 75% particles are recovered at 1500 rpm. Calculate the speed required to achieve recovery of 75% at a flow rate of 200 l/min.

B) A centrifuge with cylindrical bowl with diameter 650 mm is to be used for separation of solid particle from a slurry. The depth of the bowl is 390 mm with thickness of the liquid layer 80 mm .12400 litres of slurry must be treated every hour. the other characteristics are : Specific gravity of liquid =1.3 , specific gravity of solid = 1.7 and critical diameter of the particles = 35 um, viscosity of liquid = 2 cp and the speed of centrifuge = 1500 rpm and recovery is 50%. Calculate segma factor for the centrifuge, If it has decided to increase the recovery to 75% using the same centrifuge if the flow rate is reduced to 100 1/min, 75% particles are recovered at 1500 rpm. Calculate the speed required to achieve recovery of 75% at a flow rate of 200 l/min.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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B) A centrifuge with cylindrical bowl with diameter 650 mm is to be used for separation of solid particle from a slurry. The depth of the bowl is 390 mm with thickness of the liquid layer 80 mm .12400 litres of slurry must be treated every hour. the other characteristics are : Specific gravity of liquid =1.3 , specific gravity of solid = 1.7 and critical diameter of the particles = 35 µm , viscosity of liquid = 2 cp and the speed of centrifuge = 1500 rpm and recovery is 50%. Calculate segma factor for the centrifuge, If it has decided to increase the recovery to 75% using the same centrifuge if the flow rate is reduced to 100 1/min, 75% particles are recovered at 1500 rpm . Calculate the speed required to achieve recovery of 75% at a flow rate of 200 1/min.
Transcribed Image Text:B) A centrifuge with cylindrical bowl with diameter 650 mm is to be used for separation of solid particle from a slurry. The depth of the bowl is 390 mm with thickness of the liquid layer 80 mm .12400 litres of slurry must be treated every hour. the other characteristics are : Specific gravity of liquid =1.3 , specific gravity of solid = 1.7 and critical diameter of the particles = 35 µm , viscosity of liquid = 2 cp and the speed of centrifuge = 1500 rpm and recovery is 50%. Calculate segma factor for the centrifuge, If it has decided to increase the recovery to 75% using the same centrifuge if the flow rate is reduced to 100 1/min, 75% particles are recovered at 1500 rpm . Calculate the speed required to achieve recovery of 75% at a flow rate of 200 1/min.
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