钢铁冶金年样卷A.docVIP

钢铁冶金06年样卷A Fill in the blanks 2) the thermal system of blast furnace operation is a general term for controlling the internal heat of blast furnace. 3) the most important phenomena in fluid mechanics in the blast furnace is gas flowing through the solid material layer and flows through the solid-liquid zone of the pressure drop and flooding etc.. 4) the total amount of alkali metal oxides K2O and Na2O is called alkali load in the charging furnace for smelting pig iron per ton. 5) the reduction process of blast furnace smelting is to realize the chemical separation of metal elements and oxygen elements in ore. 6) ISO4967-79 stipulates: inclusions in steel are divided into four major categories: A, B, C, D, respectively: MnS, Al2O3, silicate and globular oxides. 7) the molten iron temperature should be greater than 1250 degrees and be relatively stable in Chinas steelmaking process. 8) BOF with scrap steel is generally the amount of the amount of 10~30% assembly. 9) oxygen lance nozzle is made of copper with good heat conductivity, and its shape is the most porous Raoul nozzle. 10) converter deoxidation alloying operations include ladle deoxidation alloying, ladle deoxidation refining and alloying in furnace. 11) the power level of electric furnace reaches 700kVA / T, which can be called ultra high power arc furnace. 12) the operation of electric furnace melting stage mainly includes: the power supply, oxygen blowing and slagging ahead of time. Three, individual choice questions (2 points per game, a total of 20 points) 1) the reduction ability of CO is greater than the reduction capacity of H2 at less than 810 degrees centigrade. 2) the reduction of CO, FeO, Fe is the most difficult to restore. 3) direct reduction of solid carbon in blast furnace directly consumes solid carbon. With the strong heat absorption, the reduction agent does not need excess coefficient. 4) the top temperature of blast furnace is decreased after oxygen enriched blast. 5) the pulverized coal