REFRACTORY NOZZLE OF GAS BLAST CUPOLA

metallurgy; applicable in gas blast cupolas with refractory nozzle used in foundry. SUBSTANCE: refractory nozzle includes high-alumina and fireclay refractories, broken electrode material and natural mineral shungite with the following ratio of components, vol.%: high-alumina refractory, 25-35; fire...

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Bibliographische Detailangaben
Hauptverfasser:	KREST'JANOV V.I, GRACHEV V.A, IGNATOV V.D, SHCHETININ L.V, BAKUMA S.S, PIROGOV V.I, KALININ JU.K, MKRTCHJAN S.R, KIRIN E.M, TUKTAMYSHEV I.SH
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMISTRY FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON OPEN SINTERING OR LIKE APPARATUS OVENS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL RETORTS TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS WEAPONS
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Beschreibung
Zusammenfassung:	metallurgy; applicable in gas blast cupolas with refractory nozzle used in foundry. SUBSTANCE: refractory nozzle includes high-alumina and fireclay refractories, broken electrode material and natural mineral shungite with the following ratio of components, vol.%: high-alumina refractory, 25-35; fireclay refractory, 25-35; broken electrode material, 15-25; shungite, 15-25. Shungite is introduced into nozzle in the form of pieces with ratio of diameters of shungite pieces and pieces of main bodies equaling 0.3-0.5. Use of refractory nozzle ensures production of pig iron with high content of carbon with high temperature. Pig iron cost is reduced by 1.2-1.3 times due to use of low-cost shungite. EFFECT: higher efficiency. 2 cl, 3 dwg, 1 tbl