scope of application

Factory design, equipment integration, and general engineering contracting of recycled aluminum plant

Technology provider

China Color Technology Co., Ltd.

Brief description of technology

Through refined pretreatment technology, impurities in waste aluminum are removed and different series of aluminum alloys are sorted out to meet the raw material requirements of the product and achieve graded utilization; the developed dual-chamber furnace with a new furnace structure and combustion system reduces Burning loss rate, saves energy, and reduces pollution.

technical information

This technology is mainly suitable for the design, equipment integration and supply of dual-chamber furnaces of recycled aluminum plants with an annual output of more than 50,000 tons. The comprehensive technical performance of the dual-chamber furnace ranks first in China and the world's advanced level.

Commercial applications

no

Help/support you hope to receive during the technology transfer process

no

equipment investment

Taking the annual output of 100,000 tons of recycled aluminum alloy ingots as an example, the main equipment of the production equipment includes 1 set of refined pretreatment equipment unit, 2 dual-chamber furnaces, 4 holding furnaces, 2 sets of online degassing and filtration devices, and chain casting There are 8 machines, 2 sets of environmentally friendly dust removal devices, and supporting public and auxiliary equipment. The investment in the project equipment is about 50 million yuan.

Annual operation and maintenance fee

The raw materials consumed during normal operation of the system are estimated based on the process consumption quota and the current market price. The fuel and power required for production mainly include electricity, water and natural gas, and the costs are calculated based on the following prices (including tax): electricity (average price): 0.71 yuan/kW.h, natural gas: 2.9 yuan/m3, water: 6.84 yuan/m3. After the completion of the project, the labor force will be 97, and the wages and benefits of employees will be calculated at an average of 60000 yuan/person·year. Depreciation of fixed assets is calculated on average using the straight-line method, the net residual value rate of fixed assets is calculated at 5%, the depreciation life of buildings is calculated at 35 years, and the depreciation life of machinery and equipment is calculated at 12 years. The amortization period of other assets is calculated based on 10 years. Repair costs are calculated at 1.2% of the original value of fixed assets. Other sales expenses are calculated at 2% of sales revenue. Based on the above conditions, it is estimated that after the 100,000-ton recycled aluminum alloy ingot project is completed and put into operation, the annual operation and maintenance cost will be approximately 600 yuan/ton.

investment recovery period

A typical case is calculated based on the cash flow statement-the full investment payback period after income tax for the 100,000-ton recycled aluminum alloy ingot project is 5.5 years.

added benefit

no

comprehensive benefits

The emissions of wastewater and waste gas pollutants of this technology can meet or exceed the relevant requirements of the "Emission Standards for Industrial Pollutants of Reclaimed Copper, Aluminum, Lead, and Zinc"(GB31574-2015). For the aluminum ash produced in the production process, aluminum ash resource and harmless treatment technology can be adopted. The melting efficiency, metal loss rate, and energy consumption level of the dual-chamber furnace rank among the first-class in China and the world's advanced level.

Level of impact of obstacles on technology transfer

no

technology maturity

This technology is advanced and meets the requirements of advanced recycled aluminum plants. According to the composition of different aluminum waste materials, appropriate process routes and equipment are selected. Currently, except for X-ray sorters, laser sorters, and paint stripping kilns that cannot be stably supplied in China and need to be imported, other equipment such as crushers, flotation machines, and double-chamber furnaces have been localized.

technical applicability

This technology is suitable for the recycled aluminum industry and can provide services such as factory design, melting furnace manufacturing, production line equipment integration, and general contracting for recycled aluminum plants. Its raw material is waste aluminum, which mainly comes from local "urban mines" or imported from abroad, and is basically not subject to geographical restrictions. Compared with primary aluminum, it has obvious energy-saving and environmental protection advantages, and is an energy-saving project with huge benefits. The products produced by the recycled aluminum plant are widely supplied to downstream aluminum processing plants and die-casting plants, with high matching. The design scale of a single plant is generally more than 50,000 tons/year

technical stability

This technology is stable and reliable during production and operation. There have been many successful cases of the application of refined aluminum waste pretreatment technology in developed countries, such as Novelis's recycling and grading recycling technology for used cans. The proportion of pre-treated cans in raw materials exceeds 90%.

technical safety

The energy working fluids used in this technology mainly include electricity, natural gas, and circulating water. The industrial wastewater and waste gas produced will not cause secondary pollution after adopting corresponding control measures. Natural gas is generally used as fuel in the paint stripping and melting processes. If a qualified gas system is used and a gas leak monitoring and alarm device is installed, no major safety accidents will occur. The upstream of this technology is the waste recycling link. The waste comes from the region or imported from abroad and has a wide range of sources, and there is no problem of upstream resource limitations. Because the recycled aluminum industry itself has the advantages of energy conservation and environmental protection, both at home and abroad are vigorously developing the industry, so there is no risk of low market acceptance.

Barriers to technology transfer and promotion

no

intellectual property transfer

no