Indian Aluminium Company Limited, Alupuram Smelter Eloor.

80
INDIAN ALUMINIUM COMPANY- EXTRUSION DIVISION
Name of industry
: Indian Aluminium Company- Extrusion
division
Date of inspection : 7-9-05
Raw materials. :Aluminum billet :1200 t/month
Electricity : 27356 KW h/day.
Products
: Aluminum extruded sections :840 t/month.
Aluminum extruded scrap :360t/month
Production Process.
Aluminium extrusion is produced by squeezing a pre heated aluminium billet at a high
pressure through an orifice of required shape in a steel die. Aluminum and its alloys are soft
and plastic in temperature between 400 o C to 550 o C.The material can be easily extruded in the
above temperature range. Aluminium scrap generated in the process is sent to the smelter
section for reprocessing into billets.
Solid waste generation.:
Lead acid battery –5 nos/year. Used battery is stored in shed with roof and concrete floor.
This is disposed by selling back to the suppliers.
Quantity of spent lubricating and system oil comes to 5 t/year as per authorization issued by
KSPCB. There is a facility for storing this in steel drums in shed with roof and concrete floor.
Disposal of the material is by selling to approved reprocessor.
Water consumption and Liquid waste generation
The industry consumes 104 m 3 of water/day. They have provided facility for reusing cooling
water used in the plant. The overflow from the cooling water tank is discharged into Periyar
River. The quantity of effluent discharged from the plant is 15000 litres /day as per the
consent issued by KSPCB.
Findings/ Recommendation:
1. Used lead acid battery is disposed by selling back to suppliers.
2. Hazardous waste generated (spent lubricating and system oil) is seen stored in steel
drums.
3. There is facility for recycling of cooling water.
4. There is overflow from the cooling water storage tank which is discharged through
the outlet to Periyar River.