PREPARATION OF SINTERED ORE

• Main Authors: KUROSAWA SHINICHI, TAKEMOTO KATSUHIRO, TORII KENJI, SAITOU HIROSHI, NAKAO TSUGUO, YANAKA HIDEOMI
• Format: Patent
• Language: English
• Published: 09.08.1983
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

PURPOSE:To enhance productivity in the preparation of a sintered ore, by a method wherein a limestone particle is charged on the compounded stock material layer formed on a floor covering ore layer to carry out sintering and quick lime is prepared along with the sintered ore by the heat during sintering and recovered along with a return ore to be utilized in the compounded stock material. CONSTITUTION:A floor covering ore 5, a compounded stock material 4 consisting of coke, a powdery ore and a return ore and a limestone particle 6 are successively charged on the pallet of a sintering machine (a) from respective hoppers and the charged materials are ignited in an ignition furnace 2 to carry out the sintering of the compounded stock material. The limestone particle is heated to a high temp. mainly by combustion heat and decomposed to quick lime. After sintering is completed, the sintered ore and the quick lime are passed through a process 7 comprising a crusher and a cooler and the sintered ore product with a particle size of about +5mm. is separated by screening apparatuses 8a, 8b, 8c while the part of one with a particle size of about 8mm. is used as the floor covering ore 5 and one with a particle size of about -5mm. is passed through a return ore tank 12 along with quick lime as the return ore to be used as a part of the compounded stock material 4.