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Vol.53, No.5, 370 ~ 380, 2015
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| Title |
| Wear Characteristics of Cooling Cu Stave during Blast Furnace Operating Conditions |
| 김장원 Jang Won Kim , 박종인 Jong In Park , 이기우 Ki Woo Lee , 권의혁 Eui Hyuk Kwon , 김강민 Kang Min Kim , 권재홍 Jae Hong Kwon , 정진경 Jin Kyung Chung , 최태화 Tae Hwa Choi , 한정환 Jeong Whan Han |
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| Abstract |
| Blast furnace is generally known for iron mass production vessel with a long campaign life. However during the blast furnace operation, erosion of inner wall by the burden descent is unavoidable and it becomes the most important factor for determining the campaign life of the blast furnace. Lining of the furnace is composed of refractory and cooling Cu stave. Due to the erosion of the refractory brick, the Cu stave built in the refractory brick is exposed after several years use of the furnace. Wear of stave surface is then accelerated by the burden descent rapidly especially at high temperature and high pressure condition. Therefore, wear characteristics of Cu stave are needed to be predicted. Wear of Cu samples is tested at high temperature friction conditions using a ring-on-disc type on custom-built equipment. The wear conditions by burden descent could be changed by the operating temperature and pressure of furnace, coke particle size, hardness of Cu in high temperature, and the cooling temperature, etc. The experimental results are used to predict the life of blast furnace through the measurement of Cu wear loss. |
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| Key Words |
| metals, hot working, wear, Cu stave, blast furnace |
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