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| scrap preheating; preheating of scrap steel; scrap steel preheating (【技】电炉或转炉冶炼过程中产生的废气含有大量热能，利用其预热废钢可缩短冶炼时间、节约能源、降低成本。常见的预热方法有回转窑法和预热室法。有的钢厂还直接将废钢预热器安置在炼钢炉上方，依靠上升的炼钢炽热废气预热废钢。预热好的废钢靠重力加人炉中，效果良好。) | |||
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废钢预热 : 13 phrases in 2 subjects |
| Metallurgy | 12 |
| Technology | 1 |
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