History
Copper & Lead MFG.Group
This compound was built in 1938 for the purpose of copper smelting. In 1976 in view of expanding factory operations a contract was engaged company to recover lead from scrap batteries and eventually after a 3 year delay mass production began in 1979.
In order to fully exploit the available resources, the factory has expanded both qualitatively and quantitatively and by obtaining new machinery and equipment the industry has increased its capacity. Today various industrial plans are designed and carried out by specialists.
Copper & Lead MFG.Group is one of many companies under the auspices of this holding company.
Its major activities include production of COLORED metals such as:
1- Variety of lead bars (soft lead, L14, L16, 5.5S, 4.5S, 5N, 8.7St, 9.7AS, selenium lead and calcium lead). 
2- Copper cathodes
3- Precious metals (gold & silver)
This group is one of the most experienced industries in producing copper from mineral materials. With over 60 years of production it plays a vital role in supplying the needed copper for domestic copper industries ( electrical, communication, military & etc ).
To create added values in copper division, the industry has initiated the conversion of copper cathodes into various copper sections such as wires, cables and twisted wires so while stabilizing prices in world scales (i.e. London Metal Exchange, LME) it could also compete in such markets.
Considering that lead is recovered from scrap batteries, this group by nationwide collection of all scrap batteries has helped with the elimination of environmental pollution.
Since this group’s customers are Battery Industries, by presenting new lead products such as selenium lead and calcified lead, they hope to take an important step in modern technology of lead production based on customer satisfaction.
An Introduction on History and Application of Lead
With due observance to rich mine reserves in
In terms of consumption rate among metals (like aluminum, copper and zinc), lead stands at the fourth rank among non-ferrous metals.
Production of lead from worn-out batteries is regarded as an advanced technical method while in economic point of view it is economical which is highly welcomed in most parts of world.
The ever increasing trend of lead consumption and economical method of recycling lead from worn-out batteries and controlling environmental pollution will cause completion of technology in this field as well.
Upon taking advantage of world state of the art technology, presently, this company is offering quality services in the field of manufacturing and transfer of technical know-how of battery.
Secondary Lead Production Process:
Approx. 50 percent of annual production of lead in world is made through secondary lead recycling method.
Various methods are applied for production of secondary lead through using worn-out and dilapidated battery and lead wastage. Using short rotary furnaces (SRF) is regarded as the most economical methods which is appropriate for production of lead from worn-out and dilapidated batteries.
Lead Physical Properties
Pure lead has been comprised of the following properties:
- Atomic weight: 9.207
- Atomic number: 82
- Smelting point: 5.327
- Boling Point: 1744
- Special Weight: 35.11 gr/cm cubic meter per 20
- Density electrical lead: 98/7
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Lead applications:
Thanks to its specific weight and high atomic mass, lead is used in nuclear installations and power with the aim of protecting against gammas ray.
Lead and its components have been widely used in the following cases.
Devices related to defense industries, sheath for cover of cables, sheets, profiles, crankshaft bearings, spiral covers (galvanization), soft soldering pipes, printing, ribbon and wire industries, battery mfg. factories, wood industries, oil and petrochemical industries, match making industry, glazing and pain making industries, construction of acid tanks and reservoirs, calcite printing companies and also die casting parts mfg. factories, etc.
Major Copper Applications
Copper chemical stability and fast formation of a thin layer of oxide on its surface brings about such a resistant against rusting and biological environments in a way that not any other metal or alloy can compete with it in terms of working in water environment especially in saline water. Easy application is regarded as the other important specification of copper and its alloys. Copper and its alloys will be stretched and drawn in various occasions appropriately and will be turned easily to sheet. Moreover enjoying softness and flexibility, copper can be turned as alloy with various density degrees. Copper parts and components is used in all industrial equipment and machinery, home appliances, transport devices, military apparatus and tools in a way that its consumption rate, in less than a century, has been increased approx. 20 fold.
It should be noted that over 70 percent of copper produced in world is used in electricity and electronic industry. Moreover, copper is widely used in agricultural and biological industries.
Hereunder are regarded as some of applications of copper:
1- Copper wires,
2- Copper pipes,
3- Door handles and other home appliances,
4- Electrical magnets,
5- Engines, especially electromagnetic engines,
6- Switchboard panels, and electrical boosters,
7- Thanks to its better conducting as compared with aluminum, copper is used in ICs instead of aluminum, the consumption of which is increasing.
8- As a part of ceramics glaze and in glass painting industry,
9- Consumption of copper in electrical, electronic and telecommunications industries, Using copper in manufacturing wire and also manufacturing electronic parts,
10- Electronics and Telecommunications:
Application of fiber optic in main communications lines has brought about a revolution in distance telecommunications industry. Despite setting aside copper in some part of distribution system, dire requirement to copper has been increasing at the complexes which are connected through wire with each other.
Copper is yet considered as an appropriate transmitter for ending parts of transmitting lines. Also, intra subscription lines, local area networks, personal computers and other hardware will be in dire need of copper and its alloys especially connectors.
11-Application and usage of copper in building and construction industries, transport, equipment and parts mfg. as well as industrial mfg. industries, etc.
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