You can download articles about
COMMINUTION MODELING in PDF for free,
on the website "MINERAL MODELING".
Author is Ph.D. Igor Bobin.
COMMINUTION MODELING in PDF for free,
on the website "MINERAL MODELING".
Author is Ph.D. Igor Bobin.
By Ph.D. Igor Bobin, February 12, 2017
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By Ph.D. Igor Bobin, January 25, 2017
By Ph.D. Igor Bobin, Ph.D. Natalia Petrovskaya, January 23, 2017
Today
unconventional types of ores are involved in the processing in large
quantities. The main trend now is to obtain ultra fine grinding of ores. This
has led to the fact that crushing and grinding operations are the most costly
at the plant. Costs for grinding can reach 60% of the total cost of ore
processing.
Now
we can’t say that there is enough knowledge about the problem of the
development and the use of mathematical models in relation to the grinding and
crushing processes. Currently, there are no universal models for crushing and
grinding processes. Throughout the world there is an objective need for the
development of mathematical models of crushing and grinding. More...
By Ph.D. Igor Bobin, January 22, 2017
By Ph.D. Igor Bobin, December 27, 2016
In
previous articles [1-3] we have talked about the modeling of comminution kinetics (crushing and grinding kinetics)
C = f (t), where C – is the content of the size
fraction (size class) of final product, %; t – is time, secs.Now we are acquainting with сomminution velocity vc.
Comminution velocity (rate) vc is ratio of
the size fraction content C to unit of time t. Comminution velocity is
derivative of time vc
= dC/dt (%/secs).
Our
modeling approach to comminution kinetics allows to carry direct
calculation of сomminution velocity, pioneering move. A visual representation of the сomminution
velocity in time is very important
for solving the optimization problem of the mineral processing technology. More...
By Ph.D.
Igor Bobin, Ph.D. Natalia Petrovskaya, December 18, 2016
Rock is a
variety of different minerals united together. A
comminution process is used to liberate one mineral from another.
The size of the pieces
of rock decreases with the comminution and mineral particles are
released.
The purpose of the
comminution is to obtain the finished product of a certain size. The
finished product is directed to the separation of one mineral from
another.
Crushing
and grinding operations
are expensive, so the kinetics of grinding (сrushing, comminution)
is very important for the management.
The
comminution kinetics
reflects the change of the content
of the size fraction
(size class) of finished product in time:
C
= f(t). More....
bobin.igor@yahoo.com
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