Mining and Refining - Alfred's Clay Store
Mining and Refining - Alfred's Clay Store
Mining and Refining - Alfred's Clay Store
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<strong>Mining</strong> <strong>and</strong> <strong>Refining</strong><br />
<strong>Mining</strong> <strong>and</strong> <strong>Refining</strong> raw<br />
materials
Saint Barbara<br />
Not Saint Barbara
Pre-modern clay mining
Pre-Jackhammer times
Post-Jackhammer times
How many lives were lost
Means to an end<br />
Woodworking<br />
Bricklaying
Building<br />
Custom<br />
Railways<br />
Rail bending jig<br />
Pre automotive era
Modern <strong>Clay</strong> <strong>Mining</strong><br />
•Open-pit mine<br />
When materials are<br />
close to the surface<br />
•Underground mine<br />
When materials are<br />
deeply buried
•Large scale removal<br />
• <strong>Clay</strong> removal<br />
using high<br />
pressure water<br />
cannons
• WBB Fuchs GmbH & Co. KG<br />
Sälzerstraße 20<br />
56235 Ransbach-Baumbach<br />
Germany
<strong>Clay</strong> blending<br />
• Most bagged clays are a mixture of clays<br />
from different areas of the same mine<br />
- This ensures a consistent product, despite chemical <strong>and</strong> particle<br />
size variations in the materials being mined
De-gritting<br />
• The slurried kaolin<br />
is usually<br />
transported<br />
through pipelines<br />
to degritting<br />
facilities, where<br />
very coarse s<strong>and</strong>,<br />
mica <strong>and</strong> other<br />
impurities are<br />
extracted with the<br />
help of gravity
Finer particles<br />
(Mostly <strong>Clay</strong>)<br />
Centrifuging<br />
Coarser particles<br />
(Mostly Quartz <strong>and</strong> feldspar)<br />
• The centrifuge<br />
also separates<br />
fine kaolin<br />
particles from<br />
coarser particles<br />
• Fine particles, still<br />
in the form of<br />
slurry, move on<br />
for further<br />
processing to<br />
enhance<br />
brightness
Brightness enhancement<br />
• Brightness is<br />
enhanced through one<br />
or move processes<br />
including bleaching,<br />
magnetic separation<br />
<strong>and</strong> froth flotation<br />
which remove iron,<br />
titanium, organic, <strong>and</strong><br />
other undesirable<br />
materials
Drying<br />
•Slurry is fed into a gas-fired spray<br />
drier where it is quickly dried in a<br />
tornado-like current of warm air,<br />
<strong>and</strong> then screened
Automatic Bagging
Modernization<br />
•The mixing of<br />
moist clay in this<br />
factory is<br />
centrally<br />
controlled<br />
-Addition of dry<br />
materials to mixers<br />
-water content<br />
-machine speeds<br />
-temperature
Change language