Secondary Lead Smelting
Smelting involves the reduction of
lead-bearing scrap into metallic lead in a furnace. The following furnaces are
the most effective types of smelting furnaces used in the industry:
Rotary furnace
Rotary furnaces are known for low consumption of fuel, less heat loss
and high recovery at a high temperature. Rotary
furnaces are capable to process very low lead content scrap and residue. The lead bullion produced from rotary furnace is refined to produce
soft, pure lead ingots.
Well-designed, properly aligned and balanced Rotary
furnace driving arrangement is provided with the help of Girth
Gear of Roller drive. World class gearboxes and electric motors
are provided for long lasting and non-stop operations. High-grade material is used in the Rollers and Rotary Tiers for long life and better performance.
Our
design takes ample care for providing healthy working atmosphere.
Blast Furnace
Charge is
fed to the furnace with the help of feed conveyor, bucket elevators and
hoists. Magnabiz Corporation provides customised design solutions and
appropriate process controls to avoid pollution at various charge stages.
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The molten metal and the dross are removed
from the blast furnace by tapping operation into moulds or ladles. Normally the
furnace metal is directly cast into ingots and these ingots are allowed to
solidify. If
required the metal is tapped directly into a holding kettle which keeps the
metal molten for refining.
Local
exhaust ventilation is provided for lead fumes and dust
emissions at the lead and slag tap, launders, moulds, ladles, and
refining kettles. This exhaust is taken to bag-house.
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Reverberatory
furnace
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Reverberatory
furnaces are normally useful for processing high lead content scrap while
rotary furnaces are usually used to process low lead content scrap and
residue. |
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Typical Furnace Charging
systems:
Smelting
The Lead material received from
battery breaking / cutting operations contains
lead oxide / carbonate and small amount of
sulphates. This material and the dross received
from previous processes or from other furnaces
are fed into the furnace together with coke or
other carbon rich reducing agent and the mixture
is smelted. The lead compounds are reduced to
yield Lead metal. This crude metal is refined to
get purity upto 99.97%. Click
here to see details of refining
process.
These furnaces are fed either manually or mechanically. We design
and supply the mechanised feeding systems as per the plant needs. The fumes and
dust generated inside the furnace is thrown out and treated in a pollution
control system. Click here for details on the
pollution control system.
Magnabiz Corporation has the
technical expertise and experience to design these furnaces and install projects
on turnkey basis to produce lead
metal and/or alloy as per user
requirements and pollution control norms. Our endeavour is to provide best
solutions in most economic possible way.
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