钢包全程加盖技术的应用

Application of the ladle covering technology in whole steel making procedure

钢水温度是炼钢-连铸工序中需要重点控制的工艺参数之一,对保证连铸生产过程的顺行、提高铸坯质量、降低能耗和辅材的消耗具有重要影响。钢包作为盛放、运输和二次精炼钢水的容器,其周转运行的热状态直接影响到出钢和盛钢过程中钢水温度的变化。为降低钢水在钢包周转过程中的温降、保证连铸的开浇温度,通常采用出钢前强化钢包烘烤、提高钢包热周转、适当提高转炉出钢温度、钢水运输过程加保温剂和连铸过程加盖保温等方法。钢包全程加盖技术的产生,通过提高钢包保温性改变了原有钢包使用工艺流程,为钢铁企业降低吨钢成本、节能减排提供了一种有效手段。

The temperature of molten steel is one of the key technical parameters in steelmaking and continuous casting procedure, it has important influence to ensure continuous casting production, improve the quality of casting blank, reduce energy and auxiliary material consumption. The ladle as a container for containing, trans- port and secondary refining of molten steel, its hot state in turnover directly affect the change of steel tempera- ture during tapping and conveying. In order to reduce temperature drop of molten steel in ladle in turnover, the means, such as intensifying the ladle baking before tapping, improving the thermal circulation of ladle, increas- ing BOF tapping temperature, add thermal retardation agent in molten steel and covering for heat preservation in continuous casting process, are usually adopted. Ladle covering technology in whole steel changes the original technological process by improving the insulation of ladle, and the technology is an effective means to reduce the cost and save the energy for steel plant.