Performance advantages of calcium aluminate powder in steel making

2021-11-02

The application of calcium aluminate powder products in the steelmaking process is more common, and its performance advantages in the application process are gradually highlighted in the production and processing. Now we will explain the six outstanding performance advantages of calcium aluminate in the steel making process.

Six performance advantages of calcium aluminate powder in steel making.

1. uniform chemical composition, low melting point, fast melting speed, which can shorten the refining time;

2. Fluorine-free and non-corrosive to furnace lining and ladle;

3. compact structure, no water absorption, no pulverization, convenient storage and transportation;

4. fast slagging due to the physical properties of calcium aluminate powder such as high hardness and high melting point, which can reduce the pollution of the steel mill by dust and stabilize the refining process;

5. It does not contain impurities such as hydrogen, nitrogen and carbon, which helps to improve the quality of steel.

6. Calcium aluminate powder greatly reduces the content of harmful elements and impurities in steel, and is suitable for ordinary carbon steel, high carbon steel, high and low alloy steel.

The appearance of calcium aluminate powder products in the steel making process is more obvious. Different application methods can give full play to different application effects. Next, we talk about the specific steps of calcium aluminate powder application.

1. When deoxidation is the main method, it can be added directly to the bottom of the ladle before steel discharge; the amount added is determined by the carbon content of the end steel, generally 4-6kg/1000kg steel. 1/4 before steel discharge, the conventional addition of ferromanganese, ferrosilicon and aluminum; after steel discharge, carbon structural steel is added to manganese and ferrosilicon as usual, no need to add other alloys or aluminum wire. The steel in the ladle only needs to be refined by blowing argon. Deoxidation with this product, can reduce the amount of carbon enhancer (silicon carbide) 30-50%.

2. When mainly desulfurization, 1/3 of the dosage should be added to the bottom of the ladle in advance, but to the bottom of the ladle steel flow impact position; as the steel flows out, add 2/3 of the amount; 6-8kg/1000kg steel dosage according to the original sulfur content of the steel and the use of the effect to determine.

In short, the way to deoxygenation or desulfurization-based dosing varies, and the effect of calcium aluminate powder can be seen.

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Performance advantages of calcium aluminate powder in steel making

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