Method for duplex dephosphorization of intermediate frequency furnace and vacuum induction furnace
A technology of vacuum induction furnace and intermediate frequency furnace, which is applied to furnaces, electric furnaces, furnace types, etc., can solve the problems of high production cost and complicated operation, and achieves the effect of high speed, less slag, and favorable removal.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0021] For a certain steel, the weight percent content of each component is required to be C≤100ppm, Si≤0.3%, and P≤0.025%.
[0022] Prepare the primary dephosphorization agent consisting of 4% calcium chloride, 3% boric acid, 75% active lime and 18% iron oxide scale.
[0023] 1) Weigh 100kg steel scrap raw material;
[0024] 2) Add 2kg of active lime to the crucible of the intermediate frequency furnace to make a base, and put 100kg of scrap steel raw materials into it, and heat it up until the molten steel is melted by power transmission;
[0025] 3) Weigh 5kg of the primary dephosphorization agent, add the first batch of 2.5kg of the composite dephosphorization agent to the molten steel, control the slag temperature at 1320-1380°C, and add the second batch of 2.5kg of the composite dephosphorization agent after removing the slag , control the temperature of the molten steel at 1320-1380°C, remove the slag after fully reacting, then make white slag, take a sample and tap th...
Embodiment 2
[0033] For a certain steel, the weight percent content of each component is required to be C≤100ppm, Si≤0.3%, and P≤0.025%.
[0034] Prepare a primary dephosphorization agent consisting of 2% calcium chloride, 5% boric acid, 78% active lime and 15% iron oxide scale.
[0035] 1) Weigh 100kg steel scrap raw material;
[0036] 2) Add 1kg of active lime to the crucible of the intermediate frequency furnace to make a base, and put 100kg of scrap steel raw materials into it, and heat it up until the molten steel is melted by power transmission;
[0037] 3) Weigh 3kg of the primary dephosphorization agent, add the first batch of 1.5kg of the composite dephosphorization agent to the molten steel, control the slag temperature at 1320-1350°C, and add the second batch of 1.5kg of the composite dephosphorization agent after removing the slag , control the temperature of the molten steel at 1320-1350°C, remove the slag after fully reacting, then make white slag, take a sample and tap the ...
Embodiment 3
[0045] For a certain steel, the weight percent content of each component is required to be C≤100ppm, Si≤0.3%, and P≤0.025%.
[0046] Prepare the primary dephosphorization agent consisting of 6% calcium chloride, 4% boric acid, 80% active lime and 10% iron oxide scale.
[0047] 1) Weigh 100kg steel scrap raw material;
[0048] 2) Add 4kg of active lime to the crucible of the intermediate frequency furnace to make a base, and put 100kg of scrap steel raw materials into it, and heat it up until the molten steel is melted by power transmission;
[0049] 3) Weigh 6kg of the initial dephosphorization agent, add the first batch of 3kg composite dephosphorization agent to molten steel, control the slag temperature at 1350-1380°C, add the second batch of 3kg composite dephosphorization agent after removing slag, and control The temperature of the molten steel is 1350-1380°C. After fully reacting, remove the slag, then make white slag, take a sample and tap the steel, and measure the p...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More