Method for reducing solvent consumption under slag remaining condition of converter
A converter and condition technology, used in the manufacture of converters, improvement of process efficiency, etc., can solve the problems of loss, intense process, and low tapping temperature of converter
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Embodiment 1
[0016] When smelting steel grade Q345C (B1), the method of reducing solvent consumption under the condition of slag retention in the converter includes the following steps in sequence:
[0017] 1) Before the converter operation, prepare two silos in the converter area. The fluorite and magnesium ball silos can be used as raw dolomite and limestone silos, one as raw dolomite silos and one as limestone silos ; For raw materials, the content of MgO in raw dolomite is ≥13%, and the content of CaO in limestone is ≥60%.
[0018] 2) Q345C (B1) belongs to aluminum killed steel. The raw dolomite addition amount is 11kg / ton steel, and the limestone addition amount is 7kg / ton steel; after adding raw dolomite, the addition amount of light burnt dolomite is correspondingly reduced, and the reduction is the amount added One third of the weight of dolomite; after limestone is added, the amount of active lime added to the converter is correspondingly reduced, and the reduction is one-half of the w...
Embodiment 2
[0030] When smelting steel grade Q235B(H), the method of reducing solvent consumption under the condition of slag retention in the converter includes the following steps in sequence:
[0031] 1) Before the converter operation, prepare two silos in the converter area. The fluorite and magnesium ball silos can be used as raw dolomite and limestone silos, one as raw dolomite silos and one as limestone silos ; For raw materials, the content of MgO in raw dolomite is ≥13%, and the content of CaO in limestone is ≥60%.
[0032] 2) Q235B(H) belongs to aluminum killed steel, raw dolomite is added at 10kg / ton steel, and limestone is added at 5kg / ton steel;
[0033] 3) During the smelting process, limestone can only be added before and before the start of blowing, and it is required to be added at one time with the first batch of active lime. The raw dolomite is added at the earliest when the blowing is on, and the latest is when the slag is dumped. When adding, it requires one-time addition a...
Embodiment 3
[0044] When smelting steel grade SS330, the method of reducing solvent consumption under the condition of slag retention in the converter includes the following steps in sequence:
[0045] 1) Before the converter operation, prepare two silos in the converter area. The fluorite and magnesium ball silos can be used as raw dolomite and limestone silos, one as raw dolomite silos and one as limestone silos ; For raw materials, the content of MgO in raw dolomite is ≥13%, and the content of CaO in limestone is ≥60%.
[0046] 2) The steel grade SS330 belongs to aluminum killed steel, the raw dolomite addition is 10kg / ton steel, and the limestone addition is 5kg / ton steel;
[0047] 3) During the smelting process, limestone can only be added before and before the start of blowing, and it is required to be added at one time with the first batch of active lime. The raw dolomite is added at the earliest when the blowing is on, and the latest is when the slag is dumped. When adding, it requires o...
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