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Mineralogical
composition Hydrated magnesium silicate |
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Chemical
Formula£ºMg4Si6O15(OH)2¡¤6£¨H2O£©
Empirical Formula£ºMg4Si6O15¡¤6£¨H2O£© |
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Process
Sepiolite is a natural mineral of
sedimentary origin. Industrial process involves crushing, sieving
and drying the mineral, keeping its natural characteristics.
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Chemical
characteristics (typical) |
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| pH |
7-8 |
| Cation exchange
capacity (CEC) |
10-15 meq/100
g |
| Total ashes |
80% |
| Ash insoluble in HCl |
60% |
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Handling
/ storage / toxicity |
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| Handling |
avoid dust formation |
| Storage |
avoid wet condition |
| Toxicity |
non toxic inert
material |
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Color
is usually white or very pale green. |
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Luster
is dull. |
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Diaphaneity
is opaque. |
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Crystal
System is orthorhombic; Pncn. |
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Crystal Habits
include clay or powder |
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Cleavage
{110} is good (rarely discernible). |
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Fracture
is not observed. |
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Hardness
is 1-2 |
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Moisture content is 8 ¡À 3% |
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Apparent density is 0.60 - 0.66 kg/dm3 |
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Water absorption capacity is 135-200% |
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Specific
Gravity is approximately 1.81g/cm3. |
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Streak
is white and gray. |
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Name Origin:
From the Greek, sepia - "cuttlefish" and lithos -
"stone." From the German, meerschaum meaning "sea
froth." |
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Associated
Minerals include albite, calcite, diopside, fluorite,
microcline, monteregianite, pectolite, phlogopite, quartz, richterite,
sodalite and steacyite. |
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A:
Chemical Fertilizer with Sepiolite: |
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The most important effect is diluting
slowly the fertilizer, special to nitrogenous fertilizer. Because
it is very easy to dissolved and evaporated for nitrogenous
fertilizer. So the chemical fertilizer added sepiolite can raise
nitrogen effect. At the same time, the sepiolite can improve
the soil quality.
Quality specification
1,Sepiolite:25-40%
2,Water <8%
3,Chemical composition:
SiO2: 54-70%
MgO: 13-20%
AL2O3:15-6%
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B:
Animal Fodder with Sepiolite: |
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As accelerator and thinner in the
Animal Fodder, sepiolite can make poultry be fatter, because
it has good cation exchange and adsorbent. Sepiolite can improve
pulverize. We did a test for feeding Chicken the fodder with
sepiolite in 2003, following is the study data:
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Time
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Comparison data
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Sepiolite 1%
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Sepiolite 2%
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Sepiolite 3%
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30days Average weight(g)
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872
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862
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870
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911
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30days Fodder coefficient
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1.68
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1.65
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1.65
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1.58
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42days Average weight(g)
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1410
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1398
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1398
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1412
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42days Fodder coefficient
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2.02
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1.99
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1.99
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1.96
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Quality specification
1,Sepiolite: 10-15%
2, Chemical composition:
SiO2: 54-62%
MgO: 8-14%
AL2O3:4-6%
Fe2O3: 2-6%
3,water <8%
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C:
Electrode welding rod with Sepiolite: |
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The cheap sepiolite can exchange the
valued titanium dioxide and synthetic rutile. It can be used
as surface- cohere in electrode welding rod, and accelerate
shaping, enhance the electrode welding rod hardness. Sepiolite
would be beneficial to improve appearance and quality, avoid
to the medicinal tablet break.
Quality specification
1,Sepiolite >20%
2, Chemical composition:
SiO2: 57-70%
MgO: 10-20%
AL2O3:<4%
3,water <8%
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D:
Environment with Sepiolite: |
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Secondary mineral associated with serpentines.
It can precipitate from alkali saline waters in arial environments.
Sepiolite is a kind of unpoison and environment nonmetal mineral.
It would be beneficial to keep rich paddy field and soil. |
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E:
Building material with Sepiolite: |
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Reinforcement of Rockwool building
insulator, interlaminar bonding of calcium silicate boards and
viscosity conditioning of the exterior walls |
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Specifications: |
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Soft sepiolite (Shape in soil):
Study data(Checked by Hunan Geology Department in 2005):
Sepiolite: 32%
Talcum:16%
Quartz:22%
Calcite:30%
Chemical Composition(Checked by Hunan Chemical-Industry Department
in 2005):
SiO2: 50.3%
MgO:10.7%
Pb:0.0278%
Cd:0.0011%
As:0.0002%
Ag:0.0001%
Hard sepiolite (shape in fiber)
Raw sepiolite
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