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Product Details:
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Comprehensive deoxygenation desulfurizer is a steelmaking auxiliary material developed by our company. It is suitable for deoxygenation and desulfurization in various forms of steelmaking, especially suitable for deoxygenation and desulfurization in converter steelmaking. It has strong deoxygenation and desulfurization effects, which can effectively improve the flow performance of molten steel and solve the problem of nozzle nodulation. Reduce gas in steel and reduce inclusions in molten steel.
The main principle is that the calcium in the comprehensive deoxygenation and desulfurization agent can transform the oxides in the molten steel into deoxygenation products with low melting points that are easy to float, purifying the steel liquid. In addition, the use of this product has a simple operating process, improves the alloy addition rate, reduces alloy consumption, and reduces the cost of raw materials per ton of steel. And improve product quality, with significant economic and social benefits. When used in electric furnaces for reduction deoxidation, it can replace silicon powder, silicon, aluminum, and barium, greatly reducing steelmaking costs.
Requirements for the use of comprehensive deoxygenation and desulfurization agents:
1. The melting and oxidation periods shall be carried out according to the operating procedures.
2. After the formation of thin slag, this product is added, and the amount of addition depends on the amount of steel water and furnace conditions. It is added in 2-3 batches with an interval of 5-7 minutes between each batch, maintaining the reducibility and positive pressure of the furnace gas. The total amount added is 3-5 kg/ton of steel.
Application effect of comprehensive deoxygenation and desulfurization agent:
1. The speed of white slag formation is fast, shortening the smelting time, and at the same time, the desulfurization effect is good.
2. Reduce power consumption and improve the service life of furnace lining and furnace benefits.
3. Reducing the amount of fluorite and reducing the concentration of toxic gas fluorine is beneficial for environmental protection.
4. It can reduce the effectiveness tendency of steel. Because aluminum and nitrogen can generate stable AIN, it can prevent the formation and precipitation of diluted iron, greatly reducing the aging tendency of steel.
5. Refine the grain size of steel. Due to the addition of aluminum for deoxidation, fine dispersed AIN and Al2O3 are produced in steel. As the crystallization core, particles refine the structure. When heated in steel, AIN and Al2O3 particles can prevent austenite grain growth, obtain fine grain strength steel, and thereby improve the yield and impact toughness of the steel.
6. Aluminum can react with FeS to generate aluminum sulfide, reducing the segregation of sulfides in steel and thus improving the plasticity of steel at high temperatures.
