OREANDA-NEWS. September 12, 2013. The Ministry of Industry and Information Technology (MIIT) published the Name List of Cleaner Production Demonstration Enterprises of the National Key Industries (hereinafter referred to as Name List). There are 44 enterprises of more than 10 key industries in the Name List. TISCO and Tangshan Iron and Steel Company coming from the iron and steel industry are in the list.
   
The Name List pointed out that TISCO, relying on technological innovation, implemented a series of technical renovation programs for cleaner production, established energy-saving and emissions reduction mode for the whole production process, formed a relatively complete circulatory economy industrial chain of solid, liquid and gaseous wastes and effectively recycled the waste water, waste acids, waste gases, slag, waste heat and pressure in recent years.

 For example, TISCO took the leading in applying of activated carbon technology in the iron and steel industry, the sintering flue gas desulfurization, denitrogen oxides and acid-making system that combined the functions of desulfurization, denitrogen oxides, removal of dioxins, removal of heavy metals and dedusting was put into operation. The acid-making system produces 60,000 tons of sulfuric acid with concentration of 98% with the recovered sulfur dioxide. All the sulfuric acid is used in the production. TISCO built the world’s first fully functional metallurgical precipitator dust recycling project with annual processing capacity of 640,000 tons, the project recovers 320,000 tons of metals/year, which is equivalent to an iron mine with annual capacity of 2 million tons.
   
After the series of the technical renovation programs for cleaner production, the index of energy consumption, resources, production technology, comprehensive utilization and pollutant discharge in TISCO are greatly improved. Compared with 2002, TISCO’s comprehensive energy consumption per ton of steel decreased by 43%, the consumption of make-up water per ton of steel by 86%, the emission of smoke and dust per ton of steel by 85%, the emission of sulfur dioxide per ton of steel by 94%, COD per ton of steel by 97% in 2012.

The key index, such as COD, the emission of sulfur dioxide and smoke and dust per ton of steel, approach or are even better than the advanced world level. According to the evaluation index system for cleaner production of metallurgical industry, TISCO has reached the advanced cleaner production level. TISCO’s practice in the innovation and upgrading of technology and equipment plays an exemplary role for the iron and steel industry.