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 Sepiolite
requires alkaline conditions and high Si and Mg activities for
stability(Singer,1989).It is also loosely associated with low
latitudes and semi-arid climates. Most major deposits were originally
formed in shallow seas and lakes as chemical sediments or by
the reconstitution of smectites, in open oceans by the hydrothermal
alteration of volcanic materials, and in calcareous soils by
direct crystallization (Callen, 1984). Owing to their absorptive
properties, sepiolite is used commercially as carriers, fillers,
clarifying agents, and in used lubricant reclamation.The nature
of sepiolite precludes the production of oriented aggregate
mounts to enhance the 001 reflection for X-ray powder diffraction
(Wilson, 1987). However, strong reflections from the 011 planes
yield intense peaks at 12.2 angstroms in sepiolite and at 10.5
angstroms in palygorskite. These peaks are unaffected by solvation
with ethylene glycol, but change during heat treatments.
After heating to 400 C, the 001 peaks of both minerals are reduced
in intensity and new palygorskite peaks occur at 9.2 and 4.7
angstroms (Singer, 1989). After heating to 550 C, the original
011 palygorskite and sepiolite peaks are completely destroyed,
but now new peaks for sepiolite occur at 10.4 and 8.2 angstroms.
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Usage and Field
| Field |
USAGE |
| Drilling |
Special Mud of Resisting Salt and Heat |
| Refine crude oil |
Absorbent, Decolorant, Filtration |
| Brew and Chemical |
Molecular sieve (using in Chemical, Refine
sugar, Brew) |
| Medicine |
Ion exchanger, Cleansing agent |
| Ceramics |
Enamel Mineral |
| Environment |
Pellet cleaner, Absorbent |
| Casting |
Cohering |
| Plastic |
Vesicant and Decolorant |
| Architecture |
Soundproof and Heatproof materials, Paint |
| Rubber |
Special Stull Material |
| Welding Rod |
Material of welding rod medication |
| Chemical |
Catalyzer, Suspension, |
| Tobacco |
Cigarette Mouth Material |
| Special Paper |
Catalyzer and Absorbent |
| Agriculture |
Insecticide, Animal Food |
| Article |
Engrave Article |
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