问题
问答题 简答题
风量过低对转炉吹炼有何影响?
答案
参考答案:
(1)送风压力可能小于熔体静压,风口铜水倒灌而堵死风口。
(2)反应热不够,吹炼难以进行。
(3)吹入空气难以搅动熔体,反应不能正常进行。
(4)吹炼效率低,生产成本高。
风量过低对转炉吹炼有何影响?
参考答案:
(1)送风压力可能小于熔体静压,风口铜水倒灌而堵死风口。
(2)反应热不够,吹炼难以进行。
(3)吹入空气难以搅动熔体,反应不能正常进行。
(4)吹炼效率低,生产成本高。
补全对话 从方框中所给的选项中选择正确的句子补全对话。(10分)
A: Good afternoon, Doctor Huang. B: 小题1: What’s wrong with you? A: 小题2: B: Do you have a cough? A: 小题3: I cough now and then. B: How long have you been like this? A: 小题4: And I’m feeling terrible now. B: Let me check you over. Oh, you have a fever, too. A: Is it serious? B: Nothing serious. Take this medicine and drink more water. A: 小题5: B: Three times a day. Have a good rest and you’ll be all right soon. A; Thanks a lot. B: Not at all. |