Ⅰ、Comprehensive Utilization of Waste Slag Resources
    With the principle of reducing, re-use and recycle and the goal of persistent improvement of the core competitiveness, and driven by innovation in both technology and system, LY Steel has been enhancing the awareness of saving resources and protecting environment, following ecology rules, and realized the reducing, resourcing and unharming of waste by integration of clean production, comprehensive use of resources, eco-design, green consumption and others. By now, 300 million yuan have been invested in building of the ferrous-waste-utilized processing shop, the 600-thousand-ton BOF slag treatment & crushing & magnetic separation line and other circular economy projects, forming the annual comprehensive utilization capacity of 500 thousand tons of ferrous and carbon-bearing waste and treatment capacity of 1.2 million tons of steel slag.
    In 2010, total 360 thousand tons of ferrous and carbon-bearing refuse was re-used in sintering ore proportioning, and total 230 thousand tons of revert scrap, ball-milled iron pellets and concentrate from pulverized steel slag has been recycled from melting slag for use in steelmaking and iron making. The year, the output value attained through the comprehensive utilization came to 400 million yuan, generating 80 million yuan in economic returns. Also, with the ratio of comprehensive utilization of industrial waste up to 90.50%, comprehensive use of industrial slag has realized virtuous cycle and created substantial economic, environmental and social benefits.

    Ⅱ、Utilization of Waste Heat and Energy
    In LY Steel, the utilization is made mainly by power generation with BF gas, waste heat and energy. In recent years, total of 329,000 kW of generator unit has been newly built, and up to 1.9 billion kWh of electricity can be produced by LY itself annually, which accounts for around 50% of LY’s total electricity consumption. Among them, the 3rd phase BFG generator unit, the 4th phase BFG generator unit, the CDQ residual heat generating unit, the 360 m2 sinter residual heat generating unit, the No.7 blast furnace TRT residual pressure generating unit have been listed as clean production projects, and are involved in the carbon trade registered in UN.

    1、BFG Power Generation
      1st phase BFG generating unit:
    gas boiler capacity: 130t/h; medium pressure; steam pressure: 3.82MPa; nominal rated power of generator: 25000kW; actual power: 25000kW. It was put into production in 2004, with the designed annual BFG consumption of 900 million cubic meters, generally equivalent to 100 thousand tons standard coal, whose total annual generating capacity can be up to 200 million kW.h.

    2nd phase BFG generating unit:
    It was put into production in 2005, with gas boiler capacity of 150t/h, the designed annual BFG consumption of around 1 billion cubic meters, generally equivalent to 110 thousand tons of standard coal, whose total annual generating capacity can be up to of 200 million kW.h.

    3rd phase BFG generating unit:
    It was put into production in 2007 April, and is a fuel gas-steam combined cycle power plant. It has efficiency twice higher than that of the 1st phase and 2nd phase. The annual consumption of BFG is around 970 million cubic meters, generally equivalent to 109 thousand tons of standard coal, and the electricity generating capacity is 338.4 million kW.h.

    the 4th phase the power generator:
    The project has two sets of fuel gas - steam combined cycle power generating units (CCPP), one second high pressure gas generator, which were put into operation in 2009 Oct., Dec. and 2010 March respectively, and consume around 3.756 billion cubic meters of BFG per year, equivalent to 420,000 tons of standard coal and produce up to total one billion kW.h. The rated load of CCPPs is 28MW +25 MW, and that of gas generator is 42MW.

    2、Waste Heat Power Generation
    CDQ waste heat recovery generator:
    It utilizes the waste heat of CDQ to generate the power, and was put into production in 2006. CDQ boiler: 82 t/h; steam pressure: 3.82Mpa, the generator rated power: 20000 kW, and the annual generation: about 0.15 billion kW.h.
    360m2 sintering machine waste heat generator:
    It utilizes the waste heat of the flue gas from sintering to generate power, and was put into production in 2009 December. Its installed capacity is 13000 kW, and the designed annual generating capacity is 79 million kW.h.

     3、Waste Pressure Power Generation
    The TRT waste pressure generator of No.6 BF:
    It utilizes the residual pressure of top gas in blast furnace to generate the power, with no fuel consumption, and was put into production in 2004. The generator’s rated power is 10000kW, and the annual generation is about 65 million kW.h.
    The TRT residual pressure generator of BFs No.1 & 5:
    The two blast furnaces shares one set of TRT, which was put into production in 2006. The generator rated power is 7000kW, and the annual generation is about 50 million kW.h.
    The TRT residual pressure generator of No.7 Blast Furnace:
    It uses the residual pressure of top gas in blast furnace to generate the power, and was put into operation in 2009 October.  The generator rated power at 25000kW, annual power output is designed to be 134 million kW.h.

    III The development direction of circular economy in “12th Five-Year Plan"
    1. With focusing on state policies on low-carbon economy which are under formulation such as "The Development Plan for the Industries of Energy Conservation and Environmental Protection", "New Energy Development Plan", "Guidance for Developing Low-Carbon Economy" and "Accelerating the Implementation of Energy Management Contract to Promote the Services of Energy-saving", etc., LY adjusts its work focus.
    2. To strengthen the environmental management of construction projects, to well assess the impact of technical transformation projects and overhaul projects on environment, to strictly implement "three simultaneous”, to push forward the "clean production" and eliminate backward technology and equipments. To reduce energy and material consumption, limiting waste output from the source.
    3. To conduct comprehensive utilization of ferrous dust & sludge and melting slag, so as to realize the internal comprehensive utilization and social recycling utilization of all industrial waste.
    4. To learn the advanced experience in re-use of waste refractory material from counterparts, so as to rationally use the waste refractory resources in our company.