Silicon barium inoculant component content

The composition content of silicon-barium inoculants usually includes silicon (Si), barium (Ba), calcium (Ca), and aluminum (Al). Specifically, the content of silicon is 68%-72%, the content of barium is 2%-5%, the content of calcium is about 1.5%, and the content of aluminum is between 1-2%. The proportion of these components has an important effect on the performance and use of silica-barium inoculants. Silica-barium inoculant is mainly used in the casting process of nodular cast iron and gray cast iron to promote the formation of graphite balls and refine grains, thereby improving the performance of cast iron.

Silica-barium inoculant size:

0.2-1mm: for on-flow inoculation (inoculation amount control is more accurate)

1-3mm, 3-8mm for in-bag inoculation (inoculation time must be controlled at more than 70% of the iron time)

Silicon barium inoculant packaging: 25kg bag packaging, plus tons of bags, can also be packaged according to customer requirements;

Principle of action of silicon-barium inoculant

In the process of steelmaking, calcium is an essential element, but the calcium treatment process often produces bubbles, at the same time, there will be some inclusions in the hot metal, affecting the quality of the molten steel. Silicon-barium inoculants have been developed to solve this problem by aggregating bubbles into larger bubbles that can be removed by floatants. In addition, the silicon-barium inoculant can also adsorb on the oxide surface, reducing its adhesion and making it easier to disperse, thus effectively reducing the production of inclusions.

Application effect of silica-barium inoculant

The application of silicon barium inoculant in steelmaking has been widely recognized, and its application effect is mainly manifested in the following aspects:

1. Improve the quality of molten steel – silica barium inoculant can promote the treatment effect of calcium, so that oxides and impurities in molten steel can be better removed, thus improving the quality of molten steel.
2. Prevent inclusions in hot metal – silica barium inoculant can gather bubbles, reduce the production of inclusions, and make product quality more stable.
3. Promote slag formation – barium inoculate in the calcium treatment process can also promote the formation of slag, reduce the waste of calcium and manganese oxide, thereby improving the purity of molten steel.

Precautions for use

When using silicon-barium inoculants, the following points need to be noted:

1. Use according to the prescribed dosage, not excessive. Excessive use will lead to porosity and latent defects in the molten steel.
2. The silicon barium inoculant should be put in a special bucket for dosing, and the dosage should be uniform to avoid adverse effects on the furnace and molten steel.
3. Pay attention to the safety of the staff during use and comply with the relevant safety operating procedures.

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