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The Bentonite found in the Rajasthan- Kutch region of India is different
from the Bentonite available in rest of world due to the chemical
composition; and of higher iron content, which gives them their
darker colour. Due to the very fine particle size, this Bentonite
shows extra-ordinary swelling capacity and bonding powers. These
differences makes the Bentonite most useful in various industries
throughout the world. Bentonite has higher natural percentage of
iron, which is ideal in isolating iron ore pellets with the maximum
percentage of iron. And it's also useful for casting industries
.Almost all cast iron, steel, & malleable iron foundries are
using this Bentonite with cost efficient results. The use of the
Bentonite is successful in continuous mould-making too. In Water
well and oil well drilling the special higher mud yield results
in using less quantity of Bentonite for the same standard mud. This
results in lesser requirement of Bentonite .The Rajasthan Bentonite
has excellent filtration loss properties, which makes it ideal for
all water proofing uses, as well as environment protection utilization.
The natural distance between the layers and high porosity make the
Bentonite an ideal material for agricultural pesticide use. Bentonite
have good clumping properties and is ideal to make good extrusions
with lesser quantity of Bentonite.
| Physical state |
Finely Ground Powder |
| Colour |
Light, Grayish Yellow |
| Moister Content (By Mass) |
: 8 to 10% |
| Sand Content (By Mass) |
1.0 to 1.5% |
Fineness by passing through
100 Mesh (BSS)
|
98 to 99% |
| pH |
8 to 9 |
| Swelling Index ml |
|
| (A)
Dry Volume |
10 |
| (B)
Swelling Volume |
30 |
|
Swelling Powder
|
30ml. To 34 ml. |
| Gel Index |
: 50 to 60 |
| Density gm/ml |
1.04 |
| . Liquid Limit % by Mass |
425 to 475 |
REFORMANCE TEST :
(705 GM Bentonite Suspended
in 97 ml distilled water aged
for 24 hrs at 30+2,stirred for
Measured Frame V.G.Master).
|
|
| [ A ] Viscosity
with Mass final |
70 to 120 seconds |
| [ B] WITH FANNV.
G. METER |
|
| [
a ]Plastic Viscosity (300 rpm dial reading 40
to 44) |
6 to 9 |
[
b ] Apparent Viscosity
(600
rpm dial reading 46 to 50) |
23 to 25 |
| Yield |
155 |
| |
|
CHEMICALS
| Silica |
52% |
| Alumina |
15% |
| Ferric Oxide |
0.9% |
| Titanium |
: 1% to 5% |
| Calcium |
0.1% to 0.3% |
| Potassium |
0.2% |
| LOI |
: 8 to 10% |
| He2O2 |
Low as much as possible |
| Appliance |
Free Flowing Powder |
| Mentomoronite |
75 & |
| Sodium Oxide |
0.1 to 15% |
|
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