Hubei Dajiang Environmental Protection Technology Co., Ltd. (formerly Huangshi Dajiang Group Co., Ltd., hereinafter referred to as the Company) is a private enterprise established in 2003 from the subsidiary industry of Daye Nonferrous Metals Co., Ltd., and has been engaged in the circular economy industry for more than 40 years. At present, the company has a registered capital of 48 million yuan, 1013 employees, 15 people with master's degree or above, 95 people with bachelor's degree, 193 people with associate's degree, more than 300 professional and technical personnel of all kinds, covering mining, mineral processing, metallurgy, chemical engineering, machinery, electrical automation, etc. There are 71 people with medium and senior technical titles, 2 experts with outstanding contributions in Huangshi City, and 1 expert with provincial government subsidies. Top 100 private enterprises in Hubei, ranking 74.
Industry: According to the national standard of Industry Classification of National Economy (GB/T4754-2011) issued and implemented by the National Bureau of Statistics in 2011, the company belongs to the "waste resources comprehensive utilization industry" (C42).
Main business: comprehensive utilization of non-ferrous metal smelting waste slag, waste liquid, flue ash and other "three wastes" resources and environmental protection technology services. At present, Osmet smelting furnace slag beneficiation, converter slag beneficiation, copper electrolyte regeneration, copper smelting flue ash recovery of valuable metals and other comprehensive recovery and utilization are the leading industries. At present, the company has an annual processing capacity of 1.2 million tons of slag and 30000 tons of soot, has a purification capacity of 200000 cubic meters of electrolyte, can recover copper, lead, zinc, bismuth, tin, gold, silver, indium and other valuable metals, and has an annual output of 100000 tons of copper concentrate (including more than 18000 tons of copper), 5000 tons of zinc sulfate, 5000 tons of electrolytic zinc, 5000 tons of electrolytic lead, 3000 tons of electrolytic copper, and 3 tons of indium.
Core technology: The company has established an ecological industrial production mode of comprehensive utilization of materials, cascade utilization of energy and recycling of water resources through careful organization of production. Through scientific and technological breakthrough and technical transformation, the company has successively built a copper smelting slag tailings free beneficiation treatment system and a comprehensive ash recovery system with complete comprehensive recovery. The main core technologies are: copper, gold, silver metal recycling and resource recovery technology of smelting waste slag; Recycling and harmless disposal technology of valuable metals in smelting ash; Copper electrolysis tailing purification and copper ion electrowinning recovery technology. It has 4 invention patents and 20 utility model patents, among which, the zero tailings cascade recovery process of copper smelting waste slag, the New Technology and Application of Copper bearing Slag Crystal Phase Control Clean Flotation, and Daye Noranda Slag Slow Cooling and Beneficiation Dilution won the first prize and the fourth prize of China Nonferrous Metals Industry Science and Technology respectively. The Technology of Comprehensive Utilization of Low Grade Noranda Slag Step by step Recycling won the third prize of Hubei Provincial Science and Technology Progress Award, the Daye Noranda Slag Concentrator Project and the Daye Noranda Slag Concentrator Project Beneficiation Process and Environmental Engineering Design respectively won the second prize of China's Ministry of Nonferrous Metals Industry's Excellent Engineering Design.
Industry position: In recent years, the company has achieved advanced level in equipment and technology through increasing investment, and the comprehensive recycling level of waste has been effectively improved.