The Latest Development of Oxygen Bottom Blowing …
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bullion is added to the lead pot for further refining. Copper, tin, and other impurities
are removed, which are harmful to electrolysis in bullion. And then the content of
antimony is adjusted to meet the requirements of lead electrolysis.
After refining, the molten lead is pumped into the anode casting pot through the
lead pump and then transferred to the lead holding furnace of anode casting machine
with the lead pump. The molten lead is fed into the quantitative casting ladle and
then sent to the metal casting machine. And the rest is returned to the lead holding
furnace. The lead anode plate is transported to the lead electrolysis workshop by the
automatic crane.
Electrolytic Refining
After primary pyro metallurgy refining and casting the anode, the bullion needs to be
purified by electrolytic refining. Antimony, gold, silver, bismuth, and other valuable
metals are recovered from anode slime by lead electrolysis.
Electrolytic refining of lead process consists of cathode plate making, anode and
cathode automatic spacing, lead electrolysis, anode scrap washing, precipitation of
drawing bars for lead washing, copper bar grinding, electrolyte circulation, and slime
washing and filtration.
Cathode lead obtained from electrolyzing is sent to Lead melting pot for casting
before it is cast to lead ingot by castor. Anode scrap obtained from electrolyzing is
washed in washing tank before it returns to smelting process to be recast to anode
plate. After washing, anode slime is obtained and sent to the existing copper smelter
after pulping and filtering, so as to recover valuable metals like Au, Ag and Bi.
Washing solution and filtrate returns separately to anode scrap washing tank and
electrolyte circulating tank. During refining process, circulating electrolyte flows
into circulating tank. Appropriate amount of H2SiF6 and additive needs to be supplemented regularly into circulating tank. The solution in circulating pump is pumped
to overhead tank for recycling.
Main Equipment
SKS Furnace
The type structure of the SKS furnace is in closed, rotary, and horizontal cylinder.
The specification of the SKS furnace is ø5 × 28 m, which includes three feed
ports, fifteen oxygen injector, one siphon, two slag tapping holes, and one offgas
outlet on the siphon side.
The refractory brick life of the SKS furnace is more than three years.
The schematic diagram of the SKS furnace is shown in Fig. 1.
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bullion is added to the lead pot for further refining. Copper, tin, and other impurities
are removed, which are harmful to electrolysis in bullion. And then the content of
antimony is adjusted to meet the requirements of lead electrolysis.
After refining, the molten lead is pumped into the anode casting pot through the
lead pump and then transferred to the lead holding furnace of anode casting machine
with the lead pump. The molten lead is fed into the quantitative casting ladle and
then sent to the metal casting machine. And the rest is returned to the lead holding
furnace. The lead anode plate is transported to the lead electrolysis workshop by the
automatic crane.
Electrolytic Refining
After primary pyro metallurgy refining and casting the anode, the bullion needs to be
purified by electrolytic refining. Antimony, gold, silver, bismuth, and other valuable
metals are recovered from anode slime by lead electrolysis.
Electrolytic refining of lead process consists of cathode plate making, anode and
cathode automatic spacing, lead electrolysis, anode scrap washing, precipitation of
drawing bars for lead washing, copper bar grinding, electrolyte circulation, and slime
washing and filtration.
Cathode lead obtained from electrolyzing is sent to Lead melting pot for casting
before it is cast to lead ingot by castor. Anode scrap obtained from electrolyzing is
washed in washing tank before it returns to smelting process to be recast to anode
plate. After washing, anode slime is obtained and sent to the existing copper smelter
after pulping and filtering, so as to recover valuable metals like Au, Ag and Bi.
Washing solution and filtrate returns separately to anode scrap washing tank and
electrolyte circulating tank. During refining process, circulating electrolyte flows
into circulating tank. Appropriate amount of H2SiF6 and additive needs to be supplemented regularly into circulating tank. The solution in circulating pump is pumped
to overhead tank for recycling.
Main Equipment
SKS Furnace
The type structure of the SKS furnace is in closed, rotary, and horizontal cylinder.
The specification of the SKS furnace is ø5 × 28 m, which includes three feed
ports, fifteen oxygen injector, one siphon, two slag tapping holes, and one offgas
outlet on the siphon side.
The refractory brick life of the SKS furnace is more than three years.
The schematic diagram of the SKS furnace is shown in Fig. 1.