Sterlite Industries

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Copper Cathodes

"STERLITE" & "STERLITE T" Copper cathodes are produced using state-of-the-art "ISA electro-refining" technology at Silvassa and "ISA 2000 electrorefining" technology at Tuticorin respectively.

Applications

Continuous Cast Copper Rods
Copper Wire Bars, Bus bars, Billets, Ingots, Moulds and Other semis
Copper based alloys and downstream products
Copper tubes, strips and foils

Standards / Specifications	ASTM B115-00 (Reapproved 2004) BS EN 1978:1998 (Cu Cath-1) IS 191 , Confirming to LME Grade A
Dimensions	1000 x 980 x 4-6 mm (approx)
Cathode Weight	40-60 Kg
Cathode Bundle	1500-3000 Kg, customization possible
Packing	Securely strapped seaworthy bundles suitable for ocean transport.

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Typical Chemical Composition:

Group	Element	Typical Conc. of Element ,ppm	Group Total Typical Conc. Ppm
1	Selenium	0.4	1
	Tellurium	0.4
	Bismuth	0.3
2	Chromium	--	1
	Manganese	--
	Antimony	0.2
	Cadmium	--
	Arsenic	0.5
	Phosphorus	--
3	Lead	0.6	0.6
4	Sulphur	4	4
5	Tin	--	2
	Nickel	--
	Iron	0.6
	Silicon	--
	Zinc	--
	Cobalt	--
6	Silver	10	10

	Total Concentration of all impurities listed above	25*
7	Oxygen	30 to 50
*Not including Oxygen, --indicates below 0.2 PPM (Part Per Million)

Continuous Cast Copper Rods

SIIL continuous cast Copper rods are produced using the Propezi technology. The rods are coiled in an orbital laying form to prevent entanglement while being uncoiled by the customers. Each coil is compacted, strapped and wrapped with polyethylene wraps as well as stretch-wrapped to prevent exposure to dust and ensure a good arrival condition at the receiving end by the customers.

Applications

Jelly Filled Telephone Cables
Magnetic wires & Winding wires
Power Cables
Automobile Wire Harness
Communication Cables
House wiring
Conductors (Rounds and Flats)
Transformer

Standards / Specifications	ASTM B49/98 (Reapproved 2004) BS EN 1977:1998 and IS 12444/98
Rod Sizes (diameter)	8, 11.42 and 12.45 mm
Coil weight	1 MT to 5 MT customized coil weights on request
Coil Laying	Orbital
Packing	Compacted, strapped & wrapped with polyethylene wraps

Typical Chemical Composition:

Group	Element	Typical Conc. of Element PPM	Group Total Typical Conc. PPM
1	Selenium	0.4	1
	Tellurium	0.4
	Bismuth	0.3
2	Chromium	--	1
	Manganese	--
	Antimony	0.2
	Cadmium	--
	Arsenic	0.5
	Phosphorus	--
3	Lead	0.6	0.6
4	Sulphur	4	4
5	Tin	--	2
	Nickel	--
	Iron	0.6
	Silicon	--
	Zinc	--
	Cobalt	--
6	Silver	10	10
7	Oxygen	0.018 to 0.040 %
8	Copper	99.95 % Min
9	Conductivity	Min 101% IACS
10	Elongation	Min 38%
-- indicates below 0.2 PPM (Part Per Million)

Chemical Products

Sulphuric Acid:

PHYSICAL PROPERTIES

Specific Gravity

1.82 – 1.84

CHEMICAL PROPERTIES

H SO
Residue on Ignition
Iron
Lead

98% (Min)
0.2%
0.05%
0.005%

Phosphoric Acid:

PHYSICAL PROPERTIES

Hardness

7 mohs

CHEMICAL PROPERTIES

Iron
Silica
CaO
Sulphur
Copper
Aluminium Oxide:
Fe O

40-48%
27-33%
1-3.5%
0.2-1.5%
1%
3%
10%

Gypsum Specification

Sr. No.	Details	Specifications
1.	Purity(%)	85 Min
2.	SO3 Content(%)	40 Min
3.	Total P2O5(%)	0.6 Max
4.	Water Soluble P2O5(%)	0.2 Max
5.	Moisture(%)	16 Max
6.	Loss on Ignition (1000 Degree Celcius)	NDA
7.	Silica as SiO2	4.0 Max
8.	Bulk Density (gm/cc)	1.12
9.	pH (10% suspension)	5.50
10.	Combined Moisture (%)	18 Min
11.	Calcium Oxide(%)	28 Min

Properties of Granulated slag

1. Appearance: - Black Glassy Granules.

2. Colour & Grain shape:- Black & granular

3. pH of aqueous solution of aqueous extract as per ISO 11 127 pH = 6.6 - 7.2

4. Water soluble chloride content as per ISO 11 127- 7 Cl - = 11 ppm

5. Specific Gravity - 3.5 - 3.8

6. Bulk Density - 1.7 - 1.9

7. Hardness - 6-7 MoH Scale

8. Moisture <1%

9. Sieve analysis

Sr. No.	Sieve size(mm)	% Retension
1.	3.55	0.142
2.	2.36	2.806
3.	1.7	24.212
4.	1.18	31.44
5.	0.85	20.72
6.	0.6	17.58
7.	0.425	2.66
8.	0.3	0.37
9.	0.212	0.04
10.	0.15	0.02
11.	< 0.15	0.01
		100

10. Packing - Material shall be loose in bulk.

11. Chemical Composition

Fe
Fe2O3
Fe3O4
SiO2
CaO
S
Cu
Al2O3

40 - 48%
55 - 60%
<10%
27 - 33%
1 - 3.5%
0.2 - 1.5%
<1%
<3%

Properties of Graded Slag

1. Appearance: - Black Glassy Granules.

2. Colour & Grain shape:- Black & granular

3. Specific Gravity - 3.5 - 3.8

4. Bulk Density - 1.7 - 1.9

5. Hardness - 6-7 MoH Scale

6. Moisture <1%

7. Sieve analysis

Particle size \|MM)	Percentaqe Retained	Cummulative %
2.000	5.20%
1.700	10.20%	94.80%
	22.60%
0.850	34.50%	62 00%
	20.40%
0.425	4.00%
= 0 300	0 90%	0.90%

8. Packing - Material shall be packed in 2 MT Jumbo bags

9. Chemical Composition

Fe
Fe2O3
Fe3O4
SiO2
CaO
S
Cu
Al2O3

40 - 48%
55 - 60%
<10%
27 - 33%
1 - 3.5%
0.2 - 1.5%
<1%
<3%

Precious Metals

Copper concentrate, apart from copper, contains traces of gold & silver. The gold & silver thus present is extracted during electrolysis (final stage of copper extraction cycle) in the form of black powder called Anode Slime. Typical gold & silver content in slime are 2% & 12% respectively. Presently Sterlite Industries (India) Ltd does not have refining facility to treat or refine Anode slime. The slime is being exported to European & other refineries.

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Sterlite Industries