中国铜冶炼节能减排现状与发展

Current situation and development of energy saving and waste reduction

  • 摘要: 综述我国铜冶炼工业节能减排现状与发展趋势.我国铜冶炼工业在规模、工艺技术与装备、节能环保、资源利用等方面,已全面居于国际先进水平,目前应用的主要熔炼技术为奥图泰闪速熔炼,占50%;浸没式顶吹,占25%;其余为富氧底吹和侧吹.我国铜冶炼从精矿到阳极铜工艺能耗在200~400 kgce/t阳极铜之间,部分企业能耗水平居于世界领先,整体而言,在余热回收和过程节能方面,还有一定潜力;在SO2排放方面,我国铜冶炼工业硫的捕集率在98%~99.5%,与国际先进水平比较,还有一定差距,但整个铜冶炼工业SO2减排潜力小于10万t/a;高砷物料和重金属废水处理渣的资源化利用与安全处置,是今后我国铜冶炼工业减排的重要方向.

     

    Abstract: The current situation and development of energy saving and waste reduction in copper smelting industry of China are reviewed. The copper smelting industry in China, mainly using such processes as Outotec Flash Smelting(50%), Top submerged Lance(25%),Oxygen Rich Bottom Blowing and Double Sides Blowing (25%), has been ranked globally advanced level in its scale, technology equipment, energy saving and pollution controlling and resource utilization. The process energy consumption in copper smelting industry of China is between 200~400 kg coal equivalent per ton of anode copper, with some enterprises being in the lead of the world. China’s copper smelting industry has some potential for the waste heat recoveries and energy saving in some processes. In regard to SO2 emission, the sulfur collection efficiencies are between 98%~99.5% in China’s copper smelting industry. China has the potential for SO2 emission reduction in copper smelting industry as a whole of less than 100 kt per year, although there is a certain gap when compared with the world’s advances level. In the future, the resource utilization and safe disposal of high arsenic materials, as well as heavy metals containing waste water treatment residues are important fields for waste reduction in copper smelting industry of China.

     

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