The ratio of the heavy ore to the light ore in the mixture was by analysis, 1:5 by weight. If the ores are to be separated from the original mixture by elutriation using water at a velocity of 4.00 x 10³ m/s and a temperature of 18°C, the composition of the bottom product in terms of A is a. 33 % b. 72% c. 67% d. none of these

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
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16. An intimate mixture of two different ores of densities 2600 kg/m³ (A) and 5100 kg/m³
(B) is finely ground and given a screen analysis. The various fractions collected on the
screens are then analyzed chemically to determine the amount of each ore in each size
fraction, and in this way the following particle size analysis for each component of the
original mixture is obtained.
Diameter, microns 15
% undersize, A
% undersize, B
25 35
45 55
0 22 35 47 59
0 0 21 33.5 46
a. 33 %
b. 72%
65
68
57.5 67
85 95
100
75 100
The ratio of the heavy ore to the light ore in the mixture was by analysis, 1:5 by
weight. If the ores are to be separated from the original mixture by elutriation using
water at a velocity of 4.00 x 10 m/s and a temperature of 18°C, the composition of
the bottom product in terms of A is
c. 67%
d. none of these
75
75 81
Transcribed Image Text:16. An intimate mixture of two different ores of densities 2600 kg/m³ (A) and 5100 kg/m³ (B) is finely ground and given a screen analysis. The various fractions collected on the screens are then analyzed chemically to determine the amount of each ore in each size fraction, and in this way the following particle size analysis for each component of the original mixture is obtained. Diameter, microns 15 % undersize, A % undersize, B 25 35 45 55 0 22 35 47 59 0 0 21 33.5 46 a. 33 % b. 72% 65 68 57.5 67 85 95 100 75 100 The ratio of the heavy ore to the light ore in the mixture was by analysis, 1:5 by weight. If the ores are to be separated from the original mixture by elutriation using water at a velocity of 4.00 x 10 m/s and a temperature of 18°C, the composition of the bottom product in terms of A is c. 67% d. none of these 75 75 81
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