Copper scrap and copper alloys production from recycled
used objects is 10 or 15% of mine production. In addition, there is
considerable re-melting/re-refining of scrap generated during fabrication and
manufacture.
The treatment given to copper scrap depends on its purity.
The lowest grade scrap is smelted and refined like concentrate in a primary or
secondary (scrap) smelter/refinery. Higher-grade scrap is fire-refined, then
electro-refined. The highest-grade scrap (mainly manufacturing waste) is often
melted and cast without refining. Its copper is used for non-electrical
products, including tube, sheet, and alloys. Alloy scrap (brass, bronze) is
melted and cast as alloy. (Excerpt from Extractive Metallurgy of Copper)
For copper scrap recycling, Metalcess provides mini TBRC smelting furnace and copper electrorefining system to produce copper cathode, suitable for copper scrap of different grade.
Metalcess provide PM recovery≥99.6%, TBRC mini-scale smelting system to recover precious metal and rare metal from anode slime,WEEE/PCB/IC,copper scrap and gold-silver refining ash/slag/residue.
The furnace can be designed with effective working volume minimal 0.15m3, suitable for the recovery of anode slime, PM-containing smelting slag, lead refining dross and all kinds of dust. It can also treat secondary material like scrap copper, WEEE/PCB/IC and etc.
There
are many types of waste electronic and electric elements. Because of the
hazardous property, inappropriate treatment to WEEE/PCB may impose irreversible
threaten to local environment. Metalcess offers two solution for different
treatment capacity.
Small
capacity application: separation of metal and non-metal + rotary furnace
smelting + copper electro-refining + anode slime recovery
Medium
to large capacity application: TBRC smelting + copper electro-refining + anode
slime recovery
Metalcess provide PM recovery≥99.6%, TBRC mini-scale smelting system to recover precious metal and rare metal from anode slime,WEEE/PCB/IC,copper scrap and gold-silver refining ash/slag/residue.
The furnace can be designed with effective working volume minimal 0.15m3, suitable for the recovery of anode slime, PM-containing smelting slag, lead refining dross and all kinds of dust. It can also treat secondary material like scrap copper, WEEE/PCB/IC and etc.
Black
copper is the product of low grade copper scrap or WEEE/PCB by simple smelting.
The composition of black copper is very complicated and impurities has to be
removed by fire-refining in order to get copper anode possible for further
processing by electro-refining to produce standard copper cathode and byproduct
anode slime.
The furnace can be designed with effective working volume minimal 0.15m3, suitable for the recovery of anode slime, PM-containing smelting slag, lead refining dross and all kinds of dust. It can also treat secondary material like scrap copper, WEEE/PCB/IC and etc.
In worldwide the secondary lead recycling has outweighted lead production from raw ore. Application of lead is centralized on lead acid battery (approx. 80%) The current hot topic of secondary lead industry is how to recycle the spent lead acid battery in the manner of energy conservation, high efficiency and environment protection.
Metalcess provides full process service covering crushing and separation, lead paste converting and smelting, lead paste solution purification and crystallization, lead grid smelting, refining and casting, treatment capacity from 2t/h -20 t/h are available.
Soldering tin, is one of the products from WEEE recycling
process. In the past, soldering tin was re-melt to adjust the composition to
produce tin alloy ingot. However, the recent requirement given by RoHS
(Restriction of Hazardous Substance) request that the soldering tin has to be
free of lead for recycling use. To separate lead from soldering tin, Metalcess
suggests using a treatment process combining spiral finned crystallizer and
vacuum distillation to produce lead-free soldering tin.
The tin & lead alloy, being soldering tin from WEEE recycling process or the byproduct from spiral finned crystallizer, and tin-containing lead grid from the lead acid battery are required by to remove lead from tin. Vacuum distillation furnace is highly recommended for tin & lead separation.
Hard zinc is a kind of zinc-based alloy as
the byproduct of certain zinc processing, including waste galvanizing zinc (Zn-Fe
alloy) from hot dip galvanizing of steel industry, the zinc residue (containing
Zn, Fe/Ge/In/Ag, etc.) from the refining process of crude zinc, zinc-cadmium
alloy, zinc-containing slag from waste incineration, etc. Hard zinc can be used
to recover zinc as well as other valuable metal.
How to purify hard zinc and hot dip galvanizing zinc slag? The distillation furnace by Metalcess can easily handle it with low cost and high efficiency!
Can shell is made from steel-plated tin electrolytic (abbreviated as SPTE), which is a cold-rolled low carbon steel sheet plated with pure tin on both sides for anti-corrosion, thus the material integrates both features of steel and tin, high strength and formability, of and the good appearance, corrosion resistance and solderability.
Recycle of SPTE first comes to tin recycling, the key point of all the recycling steps. The accessible process for tin recycling from SPTE includes :
Alkaline Electro-winning
Alkaline Solution Treatment
Chloridization Treatment