非计划休风后(一小时以上)如果不能及时引煤气,势必造成炉凉,出现大量废品。建有球式热风炉和布袋除尘的小高炉,由于受煤气温度的限制,煤气温度太高(大于300℃)或太低(小于70℃)容易烧坏布袋和布袋结露(和泥)限制了及时引煤气。要把煤气温度控制在合适范围内,只好用料批来调剂,然而非计划休风后一般料线都很低,甚至看不见。为控制煤气温度,上料速度又不能太快。这是许多小高炉长期低料线而出废品的根本原因。我们在实践中认识 Unplanned break (more than one hour) If you can not lead the gas in time, it is bound to cause furnace cool, a lot of waste. A small blast furnace with a built-in ball hob and bag dusting is easily burned due to the gas temperature too high (above 300 ° C) or too low (less than 70 ° C). Restrictions on bagging and bag condensation (and mud) Timely lead the gas. Gas temperature should be controlled within the appropriate range, had no choice but to adjust the batch, however, the general unplanned breaklines after the general line is very low, or even invisible. To control the gas temperature, feeding speed can not be too fast. This is the root cause of long-term low stockpile rejection of many small blast furnaces. We know in practice