The size of calcium silicon 5530 is 1 - 6mm, which means that the size is between 1mm and 6mm. This size of calcium silicon 5530 is obtained through a specific processing or screening process, and the size is relatively uniform. The particle shape may be irregular, but it is roughly within this size range. Its particle distribution will affect the fluidity and bulk density during use. Within a certain range, the more uniform the size, the better the fluidity, and it is easier to achieve uniform mixing when added to other materials.

In the highly competitive casting industry, choosing the right inoculant directly impacts the mechanical properties, machining quality, and production costs of castings. Our 1-6mm casi alloy inoculant, through its unique physical and chemical properties, solves three core challenges for casting engineers: controlling inoculation fading, ensuring the uniformity of complex casting cross-sections, and improving production stability.

calcium silicon

chemical composition

Component elements	Content range (%)	Technical Specifications and Metallurgical Functions
Silicon (Si)	55-65	Main Inoculating Elements: Provide graphitization nuclei and adjust the final silicon content of molten iron.
Calcium (Ca)	28-32	Core Functional Elements: Effectively deoxidize and desulfurize, forming long-lasting nucleation sites.
Aluminum (Al)	≤2.4	Auxiliary Deoxidizing Elements: Synergistically enhance inoculation effects with calcium.
Carbon (C)	≤1.0	Trace Components: Have an auxiliary promoting effect on the inoculation process.
Phosphorus (P)	≤0.04	Strictly Controlled Impurity Elements: Avoid adverse effects on casting toughness.
Sulfur (S)	≤0.06	Extremely Low Content: Ensures the product itself does not introduce harmful sulfur elements.

Physical Properties and Size Analysis

The 1-6mm size distribution is the core physical characteristic of this product. This range has been verified through extensive process testing, achieving an optimal balance between dissolution rate, anti-floating properties, and process adaptability:

1-3mm fine particles (40-50%): Rapidly dissolving portion, ensuring immediate inoculation reaction.

3-6mm medium particles (50-60%): Continuously dissolving portion, providing long-term inoculation support.

<1mm powder proportion: Strictly controlled below 3%, reducing floating loss and environmental pollution.

Engineering principles of size advantage: The 1-6mm size design is based on fluid dynamics calculations and mass transfer theory, ensuring that particles sink and dissolve at the optimal rate in molten iron. This avoids premature floating loss of excessively fine particles and prevents incomplete dissolution of excessively coarse particles.

ferro calcium silicon alloy

Impact on performance

Dissolution rate in metallurgical process:

Compared with larger size ferro calcium silicon alloy, the size of 1 - 6mm has a relatively faster dissolution rate in metallurgical process (such as steelmaking, casting). Because smaller particles have a larger contact area with molten metal (such as molten steel, molten iron), under conditions of high temperature and stirring, the calcium silicon element can dissolve into the molten metal more quickly, thereby more efficiently exerting its deoxidation, desulfurization and other functions. For example, when used in a steelmaking converter, this size of CaSi 5530 can participate in the reaction faster, reduce reaction time, and improve production efficiency.

Impact on reaction uniformity:

Uniform and moderate size is conducive to the uniformity of the reaction. In the molten metal, these particles can be distributed relatively evenly, so that the silicon and calcium elements are evenly integrated into the metal, avoiding quality problems caused by excessive or low local concentrations. For example, in the casting process, it can make the graphitization process in cast iron more uniform, promote the uniform formation of graphite balls, and improve the quality and performance of castings.

silicon calcium

Applicable industrial scenarios

Steelmaking industrial scenarios:

Deoxidation and desulfurization applications: In the steelmaking process, silicon calcium 5530 with a size of 1-6mm is very suitable as a deoxidizer and desulfurizer. It can effectively remove oxygen and sulfur from molten steel, reduce the inclusion content in steel, and improve the purity and quality of steel.

Advantages of the alloying process: As an alloying additive, this size of calciumsilicon 5530 can provide silicon and calcium elements to steel and improve the performance of steel. Its moderate size allows for uniform distribution during the stirring of molten steel, making the composition of the steel more uniform. When producing high-strength steel, fatigue-resistant steel, corrosion-resistant steel, etc., it can stably provide silicon and calcium, promote the alloying process of steel, and improve the strength, toughness and corrosion resistance of steel.

Casting industry scenario:

Role of inoculant and spheroidizer: In the casting industry, this size of silicon calcium 5530 can be used as an inoculant and spheroidizer. In cast iron production, it can promote graphitization, make graphite balls smaller and more uniform, and reduce the tendency of white cast iron. In the production process of ductile iron, when used in combination with spheroidizers such as magnesium, SiCa 5530 with a particle size of 1-6mm can better play its role in assisting spheroidization and improve the spheroidization effect.

Ferroalloy production scenario:

Raw material application advantages: In ferroalloy production, this size of ferro silicon calcium 5530 can be used as a high-quality raw material for the production of other ferroalloys. Due to its suitable size, it can be better mixed with other raw materials in further smelting, refining and alloying processes, making it easier to control the reaction process and product quality.

Nonferrous metal alloy production scenarios:

Performance improvement: In the production of nonferrous metal alloys (such as aluminum alloys and magnesium alloys), 1-6mm calcium silicon alloy 5530 can be used as an additive to improve the performance of the alloy. During the alloy smelting process, it can be dispersed more evenly in the alloy liquid, providing silicon and calcium elements to the alloy, and improving the strength, hardness and heat resistance of the alloy.