METHOD OF PREPARATION foamed slag and retain its density and properties across the surface of the melt in the melting bath in melting steel in EDEKTRODUGOVOY OVENS

摘要

1.method of preparing u043fu0435u043du0438u0441u0442u043eu0433u043e slag and u0443u0434u0435u0440u0436u0430u043du0438u00a0 density and properties on the surface of the melt in the melting bath smelting steel in electric arc furnace, inc u044eu0447u0430u044eu0449u0438u0439 lodge on the steel in the furnace through the u0444u0443u0440u043cu044b established along the furnace u0448u043bu0430u043au043eu043eu0431u0440u0430u0437u0443u044eu0449u0438u0445 and u0443u0433u043bu0435u0440u043eu0434u0441u043eu0434u0435u0440u0436u0430u0449u0438u0445 materials and oxidants, the regulation number ets of u0443u0433u043bu0435u0440u043eu0434u0441u043eu0434u0435u0440u0436u0430u0449u0438u0445,u0448u043bu0430u043au043eu043eu0431u0440u0430u0437u0443u044eu0449u0438u0445 materials and oxidants depending on the u043fu043eu0442u0440u0435u0431u043bu00a0u0435u043cu043eu0433u043e electrodes, current, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0, as u0448u043bu0430u043au043eu043eu0431u0440u0430u0437u0443u044eu0449u0438u0445 materials use tons of materials containing oxide u043au0430u043bu044cu0446u0438u00a0, oxidants, materials containing iron oxide and / or a gaseous mixture containing oxygen and a u0443u0433u043bu0435u0440u043eu0434u0441u043eu0434u0435u0440u0436u0430u0449 their material is a material containing carbonthe iron oxide and / or oxygen from the gaseous mixture into the furnace with respect to the u043eu043au0441u0438u0434u0443 serves u043au0430u043bu044cu0446u0438u00a0 3 - 7: 1 and the overall u0440u0430u0441u0445u043eu0434u0435 oxide u043au0430u043bu044cu0446u0438u00a0 3 - 15 kg / t steel and carbon in u0432u043eu0434u00a0u0442 in the bath at a rate of 4 to 10 kg / t steel, in mines, the number of fourme, through which u043eu0441u0443u0449u0435u0441u0442u0432u043bu00a0u044eu0442 file u043au0430u043bu044cu0446u0438u00a0 oxide, iron oxide and / or gaseous mixture with has the oxygen and carbon dioxideset depending on the mass of the trunks to the formula;n = 3 + (0,03G - 1);where n is the number of u043eu0441u0443u0449u0435u0441u0442u0432u043bu00a0u044eu0442 fourme, through which an iron oxide and gaseous oxygen and carbon;;g is the mass of the trunks, etc.;;3 - the minimum number of u0434u043bu00a0 fourme melting mass less than 50 tons.;1; 0.03 - ratios, creating a number of additional fourme, through which u043eu0441u0443u0449u0435u0441u0442u0432u043bu00a0u044eu0442 filing materials in the furnace depending on the capacity u0443u0441u0442u0430u043du0430u0432u043bu0438u0432u0430u0435u0442u0441 u00a0 as a number of times.;2. method for u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 1, so that the u043fu043eu0442u0440u0435u0431u043bu00a0u0435u043cu044bu0439 electrodes, current expenditures u043au0430u043bu044cu0446u0438u00a0 oxide, iron oxide or oxygen from a gaseous mixture and carbon u0443u0441u0442u0430u043du0430u0432u043bu0438u0432u0430 ute of u0443u0441u043bu043eu0432u0438u00a0 u043fu043eu043bu0443u0447u0435u043du0438u00a0 and u0443u0434u0435u0440u0436u0430u043du0438u00a0 density of between 30 and 50% of the density of the slag generated at the end of the trunks.;3. method for u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 1, so that a material containing oxide u043au0430u043bu044cu0446u0438u00a0, use u0438u0437u0432u0435u0441u0442u043du00a0u043a, lime, or their mixture.;4. method for u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 1, so that a material containing iron oxide, use the filter dusts, sludges, slag, or their mixture.;5. method for u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 1, so that a gaseous mixtures containing oxygen, using air, enriched oxygen air mixture with nitrogen or argon oxygen.;6. method for u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 1, so that a material containing carbon, the use of coke, coal, u0442u0435u0440u043cu043eu0430u043du0442u0440u0430u0446u0438u0442, carbide or carbide u043au0430u043bu044cu0446u0438u00a0 u043au0440u0435u043cu043du0438u00a0.