RU2010148546A

RU2010148546A - METHOD FOR Smelting low-carbon manganese-containing alloys

Info

Publication number: RU2010148546A
Application number: RU2010148546/02A
Authority: RU
Inventors: Александр Николаевич Серегин (RU); Александр Николаевич Серегин; Виктор Михайлович Ермолов (RU); Виктор Михайлович ЕРМОЛОВ; Роман Александрович Коноплёв (RU); Роман Александрович Коноплёв
Original assignee: Александр Николаевич Серегин (RU); Александр Николаевич Серегин
Priority date: 2010-11-29
Filing date: 2010-11-29
Publication date: 2012-06-10
Also published as: RU2455379C1

Abstract

1. Способ выплавки низкоуглеродистых марганецсодержащих сплавов, включающий подготовку шихтовых материалов, частичную или полную загрузку их в горн, зажигание шихты, восстановление оксидов шихты кремнийсодержащим сплавом и выпуск продуктов плавки, отличающийся тем, что плавку проводят вне печи, причем вся шихта перед загрузкой в плавильный горн нагревается до температуры 110-550°С, а восстановление оксидов марганца шихты ведут восстановителем, в состав которого, частично, взамен кремния, введены алюминий, кальций, магний вместе или по отдельности, поддерживая суммарное отношение оксидов кальция и магния к оксидам кремния и алюминия в конечном шлаке в пределах 0,3-1,25. ! 2. Способ по п.1, отличающийся тем, что количество алюминия, кальция и магния взамен кремния в восстановителе вместе или отдельно составляет от 5 до 35%. ! 3. Способ по п.1 и 2, отличающийся тем, что за 5-10 мин до окончания плавки, на расплав задают осадительную смесь в количестве 3-7% от веса марганецсодержащего сырья, опускают электроды и нагревают расплав до температуры 1550-1650°С. 1. A method of smelting low-carbon manganese-containing alloys, including the preparation of charge materials, their partial or full loading into the furnace, ignition of the charge, the reduction of charge oxides with a silicon-containing alloy and the release of smelting products, characterized in that the smelting is carried out outside the furnace, the entire charge being loaded before melting the hearth is heated to a temperature of 110-550 ° C, and the reduction of manganese oxides of the charge is carried out with a reducing agent, the composition of which, in part, instead of silicon, is introduced aluminum, calcium, magnesium together or separately flax, maintaining the total ratio of calcium and magnesium oxides to silicon and aluminum oxides in the final slag in the range of 0.3-1.25. ! 2. The method according to claim 1, characterized in that the amount of aluminum, calcium and magnesium instead of silicon in the reducing agent together or separately is from 5 to 35%. ! 3. The method according to claim 1 and 2, characterized in that 5-10 minutes before the end of melting, the precipitation mixture is set on the melt in an amount of 3-7% by weight of manganese-containing raw materials, the electrodes are lowered and the melt is heated to a temperature of 1550-1650 ° FROM.

Claims

1. A method of smelting low-carbon manganese-containing alloys, including the preparation of charge materials, their partial or full loading into the furnace, ignition of the charge, the reduction of charge oxides with a silicon-containing alloy and the release of smelting products, characterized in that the smelting is carried out outside the furnace, the entire charge being loaded before melting the hearth is heated to a temperature of 110-550 ° C, and the reduction of manganese oxides of the charge is carried out with a reducing agent, the composition of which, in part, instead of silicon, is introduced aluminum, calcium, magnesium together or separately flax, maintaining the total ratio of calcium and magnesium oxides to silicon and aluminum oxides in the final slag in the range of 0.3-1.25.

2. The method according to claim 1, characterized in that the amount of aluminum, calcium and magnesium instead of silicon in the reducing agent together or separately is from 5 to 35%.

3. The method according to claim 1 and 2, characterized in that 5-10 minutes before the end of melting, the precipitation mixture is set on the melt in an amount of 3-7% by weight of manganese-containing raw materials, the electrodes are lowered and the melt is heated to a temperature of 1550-1650 ° FROM.