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| Aluminium |
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World's
largest aluminium rolling company |
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One
of the biggest producers of primary aluminium in Asia |
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Market
share of 48 per cent |
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One of the lowest-cost producers of aluminium in the world
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Over
58 per cent of sales in value-added products |
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Fully
integrated aluminium plant at Renukoot, UP |
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Aluminium
wheels plant at Silvassa, in Dadra & Nagar Haveli |
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Foil
plants at Silvassa and Kalwa. Foil unit of Indal at Kollur |
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ISO
9001:2000 and 14001 certified |
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Alumina
refining capacity of 1,160,000 tpa going up to 1,500,000
tpa |
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Aluminium
metal producing capacity of 445,000 tpa |
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Captive
power generation of 1087.2 mw |
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Copper
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India's
largest copper smelting and refining plant at Dahej, Gujarat,
with two copper mines in Australia
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Domestic
market leader with 45 per cent market share |
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Smelting
and refining capacity 500,000 tpa, the largest single
location smelter in the world |
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Captive
jetty (Dahej Harbour & Infrastructure Limited, a wholly
owned subsidiary) |
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ISO
9001,14001 and OSHAS 18001 certified |
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Registered
on London Metal Exchange as Grade A Copper Brand |
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Certified
as a Star Trading House |
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| alumina
chemicals
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Coarse
aluminas
Calcined
aluminas are widely used in refractories and
in the ceramic industry. Specific properties
include extreme hardness, refractoriness,
high mechanical strength and resistance to
wear abrasion, chemical attack and corrosion.
These are used as feed material for fused
alumina, refractory aggregates, etc.
Coarse alumina grades are white crystalline
powders which are predominantly alpha alumina
of high chemical purity and consistent physical
properties. These products have excellent
grindability properties.
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Medium
and low soda aluminas
Low and medium soda course alpha aluminas
consist of friable aggregates of crystallites
having easy grindability and are used in
the manufacture of wear-resistant ceramic
liners in addition to industrial ceramics
and electrical insulators.
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Medium
and low soda fine aluminas
Medium
and low soda fine aluminas have predominantly
alpha phase, with controlled particle size
distribution. They are widely used in special
refractory bricks and shapes, refractory gunning
mixes, wear-resistant ceramic parts, ceramic
liners, grinding media, HVDC/HVAC insulators,
etc when used for high temperature applications.
These low soda grades provide excellent hot
strength to the refractory body. |
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Fine
aluminas
These are predominantly fine, alpha aluminas
of about 5µ sizes with controlled particle
size distribution. They are widely used in
high alumina refractories, concast shapes,
grinding media, high tension insulators, ceramic
liners, etc.
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| Reactive
aluminas |
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Reactive
fine aluminas
These grades are predominantly alpha alumina
having wider particle size distribution. They
yield a low-water demand with very good flow
properties when used in low cement castables,
ULCC and self-flow refractory mixes. They
are also recommended for usage in grinding
media, wear resistant ceramic components and
liners owing to their superior packing characteristics. |
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Reactive
aluminas — ultrafine
These reactive alumina grades are white
crystalline alpha alumina powders developed
for specialised ceramic and refractory applications.
These aluminas are characterised by high reactivity,
low water absorption and controlled particle
size distribution. Typical applications include
low cement and ultra low cement castables,
slide gates and refractory bricks, resistor
cores, new generation ceramics and wear resistant
ceramic parts.
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Polishing
aluminas
These grades are developed through controlled
calcination and processing in order to obtain
consistent particle hardness, shape and size
distribution. They provide a choice of oil
absorption values within the product range.
These are recommended for use in solid bars,
emulsions and pastes for metal and stone polishing
applications. |
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| Hydrates
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Coarse
alumina hydrates
Alumina hydrate, which is also termed
as aluminium hydroxide and alumina trihydrate,
is a crystalline white powder and its chemical
formula is Al2O3.3H2O or Al(OH)3. These hydrates
are available both in moist and dry forms.
Coarse alumina hydrates are recommended in
the manufacture of aluminium sulphate (alum),
PAC (Poly Aluminium Chloride), zeolite, aluminium
fluoride, glass, etc. |
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Fine
alumina hydrates
These are fine white powders with average
particle size ranging from 5 to 15 microns.
They are used as fillers in paper, SMC/DMCs
and also function as flame retardants in latex,
rubbers, plastics, etc.
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