Calculate change in mass fraction, Chemistry

Assignment Help:

Question

Table 1 shows the specific rate of breakage Sj and the values of the breakage distribution function b(i,j) of a mineral ore in a ball mill. Table 2 shows the size distribution of the feed.

Table 1 Specific rate of breakage Sj and the values of the breakage distribution function b(i,j) of a mineral ore in a ball mill based on 5 revolution of the mill.

 

Size Interval (µm)        150-106            106-75              75-53            53-37                   37-0

Interval, j                          1                          2                     3                   4                   5

Sj                                      0.65                  0.55                 0.40               0.35             0.00

b(1, j)                                0.00                  0.00                 0.00               0.00             0.00

b(2, j)                                0.35                  0.00                0.00               0.00              0.00

b(3, j)                                0.25                  0.45                0.00               0.00              0.00

b(4, j)                               0.20                   0.30                0.60               0.00              0.00

b(5,j)                                0.20                  0.25                  0.40              1.00              0.00

Table 2 Size distribution of the feed.

584_Calculate Change in Mass Fraction.png

(a) Which interval has the smallest absolute change in mass fraction after 1 min if the mill was operated at 5 rpm? Show your calculations.

(b) Given that the energy requirement for this ball milling process is 25 kJ·kg-1. In 100 words or less, describe which model (or models) you would use to estimate the energy required to crush the same feed material to a different size distribution. Justify your answers.


Related Discussions:- Calculate change in mass fraction

Characteristics of food texture, Q. Characteristics of food texture? H...

Q. Characteristics of food texture? Hardness: It is defined as the force necessary to affect a given deformation. When judged by human senses, it is the force required to pen

What do you understand by the term echolocation, Question: (i) List th...

Question: (i) List the different members of the marine mammalian groups. (ii) Explain the term "stranding" and give some reasons why cetaceans strand? (iii) Cetacean

Classification of proteins - conjugated proteins, Classification of protein...

Classification of proteins - Conjugated proteins The molecules of conjugated proteins are made up of simple proteins and non protein material. The non-protein material is known

Determine fraction of the atomic volume, The nucleus of an atom can be assu...

The nucleus of an atom can be assumed to be spherical. The radius of the nucleus of mass number 7  is given by 1.25x 10 -13 A 1/3 cm  Radius of atom is one A. If the mass number

Calculate the energy required to compress carbon dioxide, Calculate the ene...

Calculate the energy required to compress carbon dioxide from 1 bar to 50 bar (final volume is 50 ml, 298 K, ideal gas).

What are photochemical reactions, What are photochemical reactions? Ex...

What are photochemical reactions? Explain the mechanism of the photo- chemical reaction occurring among hydrogen and chlorine gas.

Explain tie-line rule, Explain tie-line rule Tie-line rule is applied t...

Explain tie-line rule Tie-line rule is applied to determine the compositions of two co-existing phases in a binary phase diagram. Tie line is a horizontal line drawn at the tem

Ch3-chbr-ch2-chcl-ch3, CH 3 -CHBR-CH 2 -CHCL-CH 3 1     2        3      4...

CH 3 -CHBR-CH 2 -CHCL-CH 3 1     2        3      4    5       Br abd Cl are side chain. numbering is done so that the alphabet that comes first in order get lowest number i.e.,

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd