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Following the launch of the new government, declaration of the de-nuclear, de-coal power plant changed Korea’s energy strategy. The demand for renewable energy or energy saving technology is expected to increase significantly in the future. In the absence of clear alternatives to replace nuclear or large capacity coal fired power plants, we expect the industry’s electricity charge will continue to rise. The integrated steel mill is the mass scaled equipment industry, POSCO and is now using up to 8% of Korea’s energy consumption. Considering the government’s recent policy and in order to enhance the profitability of the company, we are actively promoting activities such as increasing efficiency and reducing energy consumption. The core of the steel mill is the blast furnace, and the motor blower supplies large capacity, high pressurized air to the blast furnace. Using the large capacity motor as a power source, it accounts for 10% of the steel mill’s electrical consumption. When the blower blade’s failure, due to being used for such a long time, we implemented partial revamping that can minimize the cost and the construction period. As a result of successful revamping, we could contribute to minimize the payback period and improve the profitability of the steel mill.

COST REDUCTION AND ENERGY SAVING BY IMPLEMENTING OPTIMAL REVAMPING FOR A BLAST FURNACE’S MOTOR BLOWER