Method for producing mineral wool by using early-stage molten-state steel slag of converter
A molten state, converter technology, used in glass manufacturing equipment, manufacturing tools, etc., can solve the problem of inability to solve the problem of steel slag recycling, unsuitable steel slag, and no metal resource recovery, so as to maintain a virtuous cycle, reduce production costs, Achieving the effect of high value-added utilization
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[0051] Example 1
[0052] In this embodiment, "a method for producing mineral wool by using molten steel slag in the early stage of the converter", the mass percentage of the raw material composition is: 80% of the molten steel slag in the early stage of the converter, 15% reducing agent, and 5% modifier. The molten steel slag in the early stage of the converter includes the following components by mass percentage: CaO 37%, SiO 2 29%, FeO 25%, MgO 4%, Al 2 O 3 3%. The reducing agent is a mixture of ferrosilicon and aluminum particles with a particle size of 10-30mm. The modifier is cullet with a particle size of 5-20mm.
[0053] Combine figure 1 The steps for producing mineral wool in this embodiment are:
[0054] (1) The temperature is about 1400℃, pour the slag of the converter double slag retention method with the slag basicity of 1.3 into the furnace. Each converter is equipped with 3 furnaces. The steel slag is placed in the furnace and the reducing agent is added. The mix...
Example Embodiment
[0058] Example 2
[0059] In this embodiment, "a method for producing mineral wool by using molten steel slag in the early stage of the converter", the mass percentage of the raw material composition is: 80% of the molten steel slag in the early stage of the converter, 10% reducing agent, 10% modifier, and the molten state Steel slag includes the following components by mass percentage: CaO 45%, SiO 2 25%, FeO 20%, MgO 5%, Al 2 O 3 2.5%. The reducing agent is ferrosilicon with a particle size of 10-30mm. The modifier is clay with a particle size of 5-20mm.
[0060] Combine figure 1 The steps for producing mineral wool in this embodiment are:
[0061] (1) The temperature is about 1420℃, the slag of the converter double slag retention method with the slag basicity of 1.8 is poured into the furnace. Each converter is equipped with 4 furnaces. The furnace is an improved slag pot and the shell is Steel plate, the inner wall is refractory insulation furnace lining. When the steel sl...
Example Embodiment
[0065] Example 3
[0066] In this embodiment, "a method for producing mineral wool using molten steel slag in the early stage of the converter", the mass percentage of the raw material composition is: 85% of the molten steel slag in the early stage of the converter, 9% reducing agent, 6% modifier, and the molten state in the early stage of the converter. Steel slag includes the following components by mass percentage: CaO 41%, SiO 2 29%, FeO 18%, MgO 6%, Al 2 O 3 3%. The reducing agent is aluminum particles with a particle size of 10-30mm. The modifier is fly ash with a particle size of 5-20mm.
[0067] Combine figure 1 The steps for producing mineral wool in this embodiment are:
[0068] (1) The temperature is about 1450℃, pour the slag of the converter double slag retention method with the slag basicity of 1.4 into the furnace. Each converter is equipped with 5 furnaces. The steel slag is placed in the furnace and the reducing agent is added. Reduction and tempering of alumin...
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