WebDec 20, 2024 · In the case of fluidized-bed reduction of iron ore, earlier works [8, 9, 10] indicated that sticking occurred mostly during metallization of ore. The defluidization tended to be preferred at a high fractional reduction and metallization degree. Some ore particles were precipitated by the metal iron with the fibrous shape on the particle surface. WebMar 1, 2014 · The fluidized bed reactor, which was loaded with approximately 8 g of ore, was first purged with N 2 gas at fluidized condition, and then placed into the furnace. When the aimed reaction temperature was attained, the purging stream was switched to the reducing gas so as to reduce the iron ore.
Process for producing a synthetic rutile from ilmentite
WebFluidized beds operate by balancing the downward gravity forces of the weight of the particles in the charge with the upward forces created by high gas flow. Fluidization or … WebJul 1, 2024 · The reduction kinetics of α-Fe 2 O 3 to metallic iron by carbon monoxide at temperatures of 1023 to 1223 K was experimentally investigated in a micro fluidized bed reactor with in-situ mass spectrometer analysis of product gases. Results indicate that the overall reduction process could be separated into two parts that proceed in series. The … signal seed treatment
A Review on Prevention of Sticking during Fluidized Bed …
WebAn experimental apparatus with a batch type fluidized bed reactor of 60 mm I.D. for iron ore reduction was developed. The maximum reduction temperature and H**2* pressure were 900 0 C and 40 kg/cm 2 . Experiments revealed that there were many oper WebMay 15, 2024 · The direct reduction of the fine iron ore concentrate was conducted in the cylindrical fluidized bed at 775 °C. Fig. 4 plots the variations in both the fluidization time and the MD with Ug, and shows that increases in the value of Ug affect both the fluidization and reduction during the DR process. WebJan 1, 2024 · In other cases, such as the smelting reduction (SR) processes that use the fluidized bed technologies the iron-ore fines can directly be charged into the reduction … signal security seattle