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We offer a wide range
of high molecular weight water soluble
polymers possessing high flocculating
power towards suspended solids. Their
compositon, molecular size and ionic
charge are very critical to their
efficient working and can be carefully
controlled and tailor made to specific
needs. We provides a unique
package of expert technical services
which include:
- Broad spectrum of products
- On site surveys
- Field trials
- Monitoring and control
- Feedback and optimization
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INDUSTRY |
PROCESS/APPLICATIONS |
| Metal
& Mineral Processing |
- Uranium
- Zinc
- Copper
- Aluminum
- Iron
- Nickel
- Titanium
- Coal tailings
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| Water
Treatment |
- Water clarification
- Colloidal silica removal
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| Effluent
treatment |
- Organic removal
- Sludge dewatering
- Sludge thickening
- Primary sedimentation
- Secondary sedimentation
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Paper
Manufacture |
- Drainage aid
- Retention aid
- Save all
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Oil
Field Services |
- Drilling
- Enhanced oil recovery
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| Sugar
Manufacture |
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Chloralkali |
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Asbestos |
- Drainage aid
- Back water clarification
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Metal and Mineral
Processing
The mining and mineral processing industries
utilize large quantities of water to
separate and recover valuable minerals.
Many of these processes have a number
of stages where polyelectrolytes assist
in the separation of solid particles
from aqueous suspensions. |
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| Some application
areas are : |
| Alumina |
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red mud treatment. |
| Zinc |
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acid leach process, silver flotation/filtration. |
| Titanium dioxide |
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black liquor leach process,
hydrate filtration. |
| Iron ore |
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tailings clarification, pelletisation. |
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| There are several applications
where it is necessary to clarify process
water to recover valuable minerals or
to consolidate unwanted tailings. |
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Clarification of
raw water. |
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Recovery of water from tailings. |
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Clarification of effluents. |
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Clarification of underground
water. |
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Clarification of process leach
liquors. |
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| A number of mechanical
dewatering systems are used in the
mining industry to concentrate recovered
products or wastes into a manageable
form. These include vacuum filtration,
pressure filtration and centrifugation.
Polyelectrolytes are used to impart
a strong porous structure to the filter
cake which results in higher throughputs,
drier cakes and cleaner filtrates. |
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Effluent Treatment
Contaminated industrial effluents
and municipal sewage are treated in
purification plants to remove both
suspended and dissolved contaminants.
A major part of processing effluents
and sewage is the removal of suspended
solids through sedimentation and the
consolidation of recovered sludge
using mechanical dewatering systems.
The extensive range of polyelectrolytes
greatly enhance the efficiency of
these processes resulting in higher
throughputs and improved quality.
Inorganic coagulated effluents produce
bulky precipitates causing disposal
problems, the use of polyelectrolytes
helps to consolidate the sludge, permitting
as much as 60 to 70% of the water
to be recycled. Effluents conditioned
in this way respond well to the drying
bed filtration process. |
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Paper Manufacture
The paper and board industry produce
many different products from a variety
of stock furnishes to meet the ever
increasing demands of the printer
and the consumer. The variety
of furnishes has made suppliers of
retention and drainage products expand
and improve their range to meet the
industry’s requirement in respect
of fiber/filler retention and water
removal. We offer a range
of polymers which act as:
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Retention
aids: Use of these chemicals
improves paper quality by improving
paper formation, reducing delamination,
reducing white water solids and
increasing machine speed. |
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Dry strength resins:
Synthetic dry strength agents
improve fibre to fiber bonding
in a wide range of paper and boards. |
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Polymeric dispersants:
For effective dispersion of the
pigments currently used in paper
coating drainage aids and for
improving the removal of water
from the drainage section. |
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Potable Water
treatment :
Generally water has to be purified through
a treatment plant before it is distributed
for consumption to the public.
Treatment plants are designed to kill
bacteria and remove particulate matter,
colour and certain soluble ions and
ensure that the resultant water quality
conforms to world standards. Chlorine
is mainly used to kill bacteria.
The suspended solids and color are removed
through a clarification process involving
precipitation with inorganic coagulants,
followed by flocculation with
a suitable high molecular weight polyacrylamide
from the range of polyelectrolytes.
Alum is not totally used in the coagulation
process and the unused portion forms
a hydroxide precipitate which causes
co-precipitation of suspended solids.
The use of polyelectrolytes considerably
reduces the alum by flocculation of
the suspended matter. This also
has the added benefit of reducing the
final sludge volume by increased compaction
hence improving disposal. |
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Sugar Juice Clarification
:
High molecular weight polyelectrolytes
of approved quality are used in sugar
juice clarification. The sugar
mills benefit from these products in
the following ways: |
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Improved clarification |
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Increased throughput |
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Lower retention time |
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Lower heat loss |
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Reduced sugar inversion |
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Reduced lime addition |
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| All leading to improved
sugar recovery. |
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Coal Washeries
:
New mining techniques result in fine
coal particles. Flocculants
have been used increasingly for recovering
coal from tailings as a settling aid
or by filtration/centrifugation by
dewatering methods. In addition
to controlling pollution, the large
quantities of water used in washeries
can be recycled using polyelectrolytes.
Brine Clarification :
Polyelectrolytes have been developed
to replace the natural flocculants
once used to improve the efficiency
of solids removal in the brine circuit.
These specific grades are designed
to have very low levels to metal contaminants,
especially mercury.
Oil Field Services :
High performance polymers are used
in all areas of the industry –
production drilling, core drilling,
water shut off, mobility control,
fracturing, workovers, completions,
solids removal, shale inhibition,
produced fluid treatment and in certain
EOR (Enhanced Oil Recovery) techniques
such as polymer flooding. |
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