FeO的制备

H samples were prepared from a reagent grade powder (–45 μm) of Fe2O3. About 3.0 g of the powder was weighed out and it was made spherical shape about 1 cmϕ by hand roll method. Then the sample was heated up to 1 200℃at the rate of 0.33 K/s (20℃/min). After being kept for 1 h at 1 200℃, the samples were cooled in furnace. This spherical pellet was used as H samples to the reduction experiments. The porosity of H samples were 27–32%.
Reduction experiments carried out at 900, 1 000 and 1100℃using a thermal balance and it was heated up to each experiment temperature in N2 gas stream. Then, a sample was hung on the thermal balance under N2atmosphere. At first, the sample was reduced to wustite with 50%CO–50%CO2 gas mixture. Next, the sample was reduced to iron with prescribed CO–CO2 gas mixture. All gas flow rates were 3.33 ×10−5 Nm3/s (2 NL/min).
Effect of CO Gas Concentration on Reduction Rate of Major Mineral Phase in Sintered Iron Ore
ISIJ International, Vol. 53 (2013), No. 4, pp. 570–575
Dense wustite was produced by oxidizing a 0.25 mm thick sheet of Fe, 99.99+ pct purity (see Table I for analysis) at 1250℃for six hours. The gas composition for oxidation was 64 pct CO2, 36 pct CO producing wustite with an iron vacancy content, y, of 0.1. The oxidation reaction produces two oxide layers from a single iron sheet. The sheet was split in two and wustite specimens approximately 0.25 x 1 x 1 mm were prepared. Wustite samples having y = 0.05 were prepared by further heat treatment in 28 pct CO2, 72 pct CO for six hours at 1000℃. Microstructural Features Produced by the Reduction of Wustite in H2/H20 Gas Mixtures METALLURGICAL TRANSACTIONS B VOLUME 13B, MARCH 1982—117
Preparation of Synthetic Ilmenite
Synthetic ilmenite was prepared by mixing high purity iron, hematite, and rutile powders in stoichiometric amounts. The powders were mixed by blending overnight, then ground in alcohol using an agate mortar and pestle. The mixture was dried and blended overnight again. Five g of the mixture was compacted in a closed die of 12.5 mm diameter at a pressure of 4 tonnes per sq. cm. The pellet was placed in a silica tube which was flushed with high purity argon (oxygen <= 4 vpm) and evacuated to a pressure of 40μm Hg and sealed. The capsule was heated slowly to 1100 °C and held at this temperature for 25 hours after which it was cooled slowly to 800 °C followed by quenching in water. The X-ray diffraction (XRD) pattern confirmed that the synthesized material was pure ilmenite and no other phase was present. Kinetics of Reduction of Ilmenite with Graphite at 1000 to 1100 °C
SURESH K. GUPTA, V. RAJAKUMAR, and P. GRIEVESON
METALLURGICAL TRANSACTIONS B VOLUME 18B, DECEMBER 1987—713
Synthetic ilmenite was prepared from a stoichiometric mixture of high-purity iron, ferric oxide, and rutile powders. Five grams of the mixture were compacted in a closed die of 12.5 mm in diameter at a pressure of 392.4 MPa. The compact was placed in a silica tube which was flushed with high-purity argon (PO2 <= 4 Pa) and evacuated to a pressure of 5 Pa and sealed. The capsules were heated slowly to
1100 ℃, held at this temperature for 25 hours, cooled slowly to 800℃and then quenched
in water. The XRD pattern confirmed that the synthesized material was pure ilmenite. The ilmenite was melted at 1500℃in a platinum crucible held in a furnace in
high-pur ity argon gas flowing at 5 • 10-5 m3/s. X-ray diffraction confirmed that the product was ilmenite with a small amount of pseudobrookite, which could have formed as a result of minor oxidation by the air entrapped in the pores of ilmenite particles.
The Influence of Weathering on
the Reduction of Ilmenite with Carbon
SURESH K. GUPTA, V. RAJAKUMAR, and PAUL GRIEVESON
METALLURGICAL TRANSACTIONS B VOLUME 20B, OCTOBER 1989--735
1. 在隔绝空气条件下加热草酸亚铁制得：
FeC2O4=加热=FeO+CO↑+CO2↑
2. 炼钢时，过量的生铁水与O2反应生成FeO
3. 在实验室条件下，可根据铁氧化物还原叉子曲线控制氧分压和温度，以Fe2O3和Fe为原料获得高纯FeO：
Fe2O3+Fe=3FeO。