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| Study of High Blast Temperature Technology in QIANGANG No.2 Blast Furnace |
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Abstract Limited factor of blast temperature is analyzed as to present state of QIANGANG No.2 blast furnace system put into production, feasibility of high blast temperature is reviewed from facility and material. Blast temperature about 1300℃ is calculated and checked as running parameter, effect of gas flow and air preheated temperature is studied by simulation, blast temperature impacting factor and existing problem of hot blast stove is studied in theory. It shows that blast temperature can be improved in effect by regulating operation parameter of hot blast stove. By high blast temperature test in QIANGANG No.2 blast furnace, practical measure of realizing high blast temperature is summed up and analyzed, it shows that high blast temperature is related with stove operation, and factor of material-fuel and operation affects using high blast temperature in blast furnace. It shows that high blast temperature should be combined with technology such as large coal injection and enriched-oxygen, so it will be realized and bring the effect of energy-saving. The aim of high blast temperature to 1280℃ is realized by this test of high blast temperature, the study above will offer reference for improve blast temperature more.
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Received: 23 February 2009
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2010, Vol. 45 
