Our company mainly supplies specialized 3-8 nodulizer, 5-8 nodulizers, and 7-8 nodulizer for ductile iron, ensuring product quality and timely supply. We can process various particle sizes according to customer requirements.

Nodulizer, nodulizing agent also known as ferro silicon magnesium, is an additive that can promote the crystallization of graphite in ductile cast iron into spherical shapes. It is generally used in the field of casting cast iron. During the casting process, the additive added to the molten iron to precipitate graphite in a spherical shape is called a spheroidizing agent. Spheroidizing agents containing rare earth elements are called rare earth spheroidizing agents;

Ferrosilicon magnesium is an alloy formed by melting ferrosilicon, calcium, magnesium, etc. It is a good nodulizer and has strong deoxidation and desulfurization effects. Ferrosilicon, rare earth minerals, and metallic magnesium are produced The main raw material of magnesium ferrosilicon alloy.

In China, the commonly used nodulizer is ferrosilicon rare earth magnesium alloy. Most foreign countries use magnesium-based nodulizing agent (pure magnesium and magnesium alloys), and a few countries use calcium-based spheroidizing agents.

The production of rare earth ferro silicon magnesium alloy is carried out in submerged arc furnaces, which consumes a lot of electricity. Medium frequency furnaces can also be used

Chemical composition of ferro silicon magnesium

The main function of nodulizer is to improve the internal structure and performance of metal, especially in the field of casting. It can precipitate graphite in molten iron in spherical form, thereby producing high-performance ductile iron. Specifically, the addition of nodulizer can:

1. Improve the internal structure of metal: Spheroidizing agents can promote the cooling and solidification process of molten metal, forming a finer and denser grain structure, improving the strength, wear resistance, corrosion resistance and fatigue resistance of castings and extending the life of castings.

2. Improve the performance of castings: Nodularizing agents can reduce or eliminate casting defects, thereby improving the overall quality of castings.

3. Reduce material costs: By effectively spheroidizing metals, spheroidizing agents can improve the utilization efficiency of metals, reduce material consumption, and thereby reduce production costs.

4. Improve the cutting performance of metal: Nodularizing agents can reduce internal stress and improve the plasticity and toughness of metal, making the metal easier to cut and process.Prevent impurity interference: When the nodularizing agent interacts with low-melting-point impurities such as arsenic, zinc, lead, etc., it can generate iron-insoluble compounds with lower melting points, thereby eliminating the interference of these impurities and protecting the spheroidizing effect.

Application of ferro silicon magnesium nodulizer

1. Nodulizing agent, vermicularizing agent and inoculant for cast iron. Rare earth magnesium ferrosilicon alloy, also known as magnesium alloy spheroidizing agent, is a good inoculant with high mechanical strength and strong deoxidation and desulfurization effects;

2. Additives for steelmaking: Light rare earth magnesium ferrosilicon alloys are used in the production of nodulizing agents, creeping agents, and inoculants. They are also used as additives and alloying agents in the production of steel and iron. Used for refining, deoxidation, denaturation, neutralization of harmful impurities with low melting points (Pb, arsenic, etc.) and solid solution alloying to form new metal compounds, etc. to purify steel;

3. Used for refining, deoxidation, denaturation, neutralization of harmful impurities with low melting points (Pb, arsenic, etc.) and solid solution alloying to form new metal compounds to purify steel;