lecture 04 comminution - files.cercomp.ufg.br

Lecture 04 –

ComminutionProf. Dr. André Carlos Silvaancarsil@ufcat.edu.br

https://www.exportersindia.com/alaska-india/120tph-stone-jaw-crusher-plant-4316695.htm

Why we break mineral particles?

https://zh.mindat.org/photo-516865.html

1. M

iner

al L

iber

atio

n

Degree of liberation as a function of the particle to grain ratio

Example cross sections of ore particles.

Wills & Finch, 2015

2. S

urfa

ce a

rea

https://www.researchgate.net/publication/313719229_Functionalization_of_Metal_Oxide_Nanostructures_via_Self-Assembly_Implications_and_Applications

3. P

arti

cle

size

dis

trib

utio

n

https://unsplash.com/s/photos/pebbles

3. P

arti

cle

size

dis

trib

utio

n

https://unsplash.com/s/photos/pebbles

https://www.sgu.se/en/geointro/lecture-4-mining-waste/

Mec

hani

sms

of b

reak

age

https://doi.org/10.1016/j.mineng.2017.06.024

Jaw

cru

sher

s

Jaw

cru

sher

s

One axis jaw crusher Dodge jaw crusher

Jaw

cru

sher

s

Blake jaw crusherhttps://www.youtube.com/watch?v=NQdz5AyN-a4

Gyr

ator

y cr

ushe

r

Gyr

ator

y cr

ushe

r

Gyr

ator

y cr

ushe

r

https://savree.com/en/encyclopedia/gyratory-crusher

Gyr

ator

y cr

ushe

r

https://savree.com/en/encyclopedia/gyratory-crusher

https://en.machinerypark.com/stationary-crushing-plants/fabo-vsi-crusher-cone-crusher-stationary-plant-new-dycm9633gb

Con

e cr

ushe

r

Jaw

cru

sher

X C

one

crus

her

Ham

mer

cru

sher

Ham

mer

cru

sher

Ham

mer

cru

sher

Jaw

cru

sher

X H

amm

er c

rush

er

HP

GR

(hig

h pr

essu

re g

rind

ing

row

s)

VSI

mill

(ver

tica

l sha

ft im

pact

or)

Truc

kles

sys

tem

Bar

and

bal

l mill

s

Clo

sed

circ

uit

mill

ing

Ver

tica

l mill

(Ver

tim

ill)

Ver

tica

l mill

(Ver

tim

ill)

Mine to mill