问题
问答题 简答题
转炉炉渣在炼钢过程中有什么作用？
答案
参考答案：
转炉炉渣在炼钢过程中的作用：
（1）去除金属液中的P和S；
（2）减小耐火材料的侵蚀程度；
（3）分散金属液滴为脱碳创造有利条件；
（4）防止大量的热损失，避免氧气流股强力冲击熔池；减少金属喷溅；
（5）防止钢液吸收有害气体；
（6）吸附外来及内在的细小非金属夹杂物。
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转炉炉渣在炼钢过程中有什么作用？
参考答案：
转炉炉渣在炼钢过程中的作用：
（1）去除金属液中的P和S；
（2）减小耐火材料的侵蚀程度；
（3）分散金属液滴为脱碳创造有利条件；
（4）防止大量的热损失，避免氧气流股强力冲击熔池；减少金属喷溅；
（5）防止钢液吸收有害气体；
（6）吸附外来及内在的细小非金属夹杂物。
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| The Channel Tunnel (英吉利海峡隧道) In 1858, a French engineer, Aim? Thome de Gamond, arrived in England with a plan for a twenty-one mile tunnel 1 the English Channel. He said that it would be 2 to build a platform in the center of the Channel. This platform 3 as a port and a railway station. The tunnel would be well-ventilated (通风好的) if tall chimneys were built 4 sea-level(海平面). In 1860, a better plan was put forward(提出) by an Englishman, William Low. He suggested that a 5 railway tunnel should be built. This would solve the problem of ventilation, 6 if a train 7 this tunnel, it would draw in (吸入) fresh air behind it. Forty-two years later a tunnel was actually begun. If, at the time, the British had not feared invasion(入侵), it would have been completed. Recently, there has again 8 great interest in the idea of a Channel Tunnel. If it 9 , it will connect (连接) Britain to Europe for the first time in 10 . |