Development and Reform Commission promotes 3 non-ferrous metal smelting energy-saving technologies
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- Time of issue:2010-12-08
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(Summary description) It is understood that the catalog covers 11 industries including coal, electric power, steel, non-ferrous metals, petroleum and petrochemicals, chemicals, building materials, machinery, textiles, construction, and transportation, with a total of 30 high-efficiency energy-saving technologies. Relevant industries involve three technologies: submerged arc furnace flue gas waste heat utilization technology, lead flash smelting technology, and oxygen side blowing molten pool smelting technology. They are mainly used for the smelting of metals such as silicon, copper, lead, tin, nickel, and antimony.
Development and Reform Commission promotes 3 non-ferrous metal smelting energy-saving technologies
(Summary description) It is understood that the catalog covers 11 industries including coal, electric power, steel, non-ferrous metals, petroleum and petrochemicals, chemicals, building materials, machinery, textiles, construction, and transportation, with a total of 30 high-efficiency energy-saving technologies. Relevant industries involve three technologies: submerged arc furnace flue gas waste heat utilization technology, lead flash smelting technology, and oxygen side blowing molten pool smelting technology. They are mainly used for the smelting of metals such as silicon, copper, lead, tin, nickel, and antimony.
- Categories:Industry News
- Author:
- Origin:
- Time of issue:2010-12-08
- Views:0
It is understood that the catalog covers 11 industries including coal, electric power, steel, non-ferrous metals, petroleum and petrochemicals, chemicals, building materials, machinery, textiles, construction, and transportation, with a total of 30 high-efficiency energy-saving technologies. Relevant industries involve three technologies: submerged arc furnace flue gas waste heat utilization technology, lead flash smelting technology, and oxygen side blowing molten pool smelting technology. They are mainly used for the smelting of metals such as silicon, copper, lead, tin, nickel, and antimony.
Submerged arc furnace flue gas waste heat utilization technology is mainly applied to the utilization of ferrosilicon ferroalloy submerged arc furnace waste heat. Through the waste heat recovery device, the high temperature flue gas and radiant heat generated during the production process are used for secondary recovery and utilization. Medium and low pressure steam is generated in the boiler, which then drives the power generation equipment to generate electricity.
It is understood that this technology has been used in some ferroalloy companies, with mature technology and significant energy-saving effects. Taking Qinghai Belden High Purity Materials Development Co., Ltd. as an example, 16 sets of 14000kVA submerged arc furnace waste heat utilization systems can generate 192 million kWh of electricity annually. It is estimated that this technology can be promoted to 60% in steel, chemical and other industries in 2015, and the total energy saving capacity is about 1.05 million tce/a.
There are more than 400 lead smelters in China, and more than half of the production capacity is completed by the traditional sintering-blast furnace reduction smelting process. This process has high energy consumption and high pollution. It is an outdated process and uses a flash smelting process. It is an inevitable choice to replace the traditional lead smelting process.
Take the Huabao Group Company of Lingbao City in Henan Province as an example. If the flash smelting process is used, the investment in energy-saving technological transformation will be 60 million yuan. The construction period will be 1.5 years. The payback period of investment is 3.5 years. It is estimated that by 2015, the technology promotion ratio will reach 30%, with a total investment of 384 million yuan, and a total energy saving of about 150,000 tce/a.
Oxygen side blowing bath smelting technology is suitable for the smelting of copper, nickel, lead, antimony, tin and other metals. During the lead smelting process, the blast furnace reduction section is eliminated, saving a lot of coke; and the high lead slag produced by the oxidation furnace Therefore, the liquid enters the reduction furnace to make full use of the sensible heat of the high-lead slag and save energy. In 2009, the comprehensive energy consumption of copper was 366kg/t-Cu. Using this technology can reduce the comprehensive energy consumption of copper by 150kgce/t-Cu, and the energy saving capacity can reach 300,000 tce/a.
Oxygen side-blown copper technology has been adopted and put into production by 2 smelters. It is estimated that 8-12 smelters will adopt this technology in 2015, and the transformation capacity will exceed 1.8 million tons.
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