http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
가스 또는 고체분말 취입시 Lance 의 폐색에 관한 연구
유병돈,Polanschutz, W.,Hiebler, H. 대한금속재료학회(대한금속학회) 1984 대한금속·재료학회지 Vol.22 No.12
To investigate the clogging of the lance during the injection of gas with or without powder, a model study on the penetration behaviour of liquid into the nozzle was carried out in water, water-glyceline mixtures, mercury and also molten pig iron. In cold models, the penetration of liquid into the nozzle was determined using an electric contact method. On the other hand, the penetration depth of the molten pig iron was measured on the lance which was cut open after the runs. A regression analysis was made to predict the relationship between the penetration depth of the liquid into the perpendicularly downward facing nozzle and the influencing factors, such as the surface tension, the densities of gas and liquid, the viscosities of gas and liquid, the inner diameter of nozzle, and the gas flow velocity. It was shown that the penetration behaviour of the liquid into the nozzle depends on the gas flow velocity, the inner diameter and orientation of nozzle, and the densities of gas and liquid. The penetration behaviour was reduced with powder injection compared to gas only injection. The comparison of results about penetration behaviour of liquid into the nozzle showed that the understanding won for cold models can be carried over to the conditions in molten pig iron.