炼铁高炉工长考试题（The examination questions of blast furnace foreman）.docVIP

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炼铁高炉工长考试题（The examination questions of blast furnace foreman）.doc

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炼铁高炉工长考试题（The examination questions of blast furnace foreman）

炼铁高炉工长考试题（The examination questions of blast furnace foreman） Fill in the blanks (30 points, 1 cents per space) 1, fine materials require high grade, slag requirements less than (300kg/t). 2. The iron ore industry is named after an iron containing iron content of more than 85% of iron. 3. The sintering phase of sinter mainly consists of (ferrite) and (silicate) bonded phase two categories. 4, the reaction between slag and iron in slag iron storage area is mainly (desulfurization) and coupling reaction (silicon oxidation). 5. The characteristics of blast furnace coal injection are gas volume and kinetic energy (increase), indirect reduction reaction (improvement or enhancement), theoretical combustion temperature (decrease) and hearth center temperature (rise). 6, the alkali removal capacity of slag increases with the increase of MgO content in slag and decreases with the increase of basicity. 7, the heat transfer in the blast furnace (convection heat transfer) based, only in the high temperature zone to consider (radiation heat transfer). 8, the hearth accumulation is easy to cause the slag mouth to be damaged, generally the edge accumulation first bad (tuyere), after bad (slag mouth). 9, in the steel caused by cracking of elements (S, Cu), caused by cold brittle elements (P, As). 10, the blast furnace is lower than (800) C is the indirect reduction zone, (800-1100) temperature is coexistence zone, higher than (1100) C is the direct reduction zone. 11, the purpose of the next adjustment is to maintain the front of the tuyere suitable (tuyere raceway) and (theoretical burning temperature), so that reasonable airflow, uniform temperature, heat and plenty of stability, the hearth active. 12, a metallurgical coke standard ash is not more than (12%), sulfur content less than (0.60%). 13, the burden is lower than the specified feed line (0.5 meters) above is called the low stock line. 14, carbon brick burning mechanism is: (400) above O2 burned, at (500) C and H2O reactio