Silicon Aluminum Calcium
Silicon aluminum calcium
Silicon aluminum calcium alloy is a composite metallurgical material. Siliconaluminum calcium alloy deoxidizer is suitable for electric furnace, converter andmedium frequency furnace smelting. lt can replace aluminum wire, silicon calcium,silicon aluminum and calcium aluminate to meet the requirements of deoxidation,desulfurization and refining of molten steel. The advantages of silicon aluminumcalcium: it has a variety of deoxidizing components, low melting point, fast diffusion,obvious deoxidation effect. Meanwhile it can promote desulfurization, removeimpurities and purify molten steel. lt can also increase the speed of smelting andreduce the cost of steel making.
The Specifications of Silicon Aluminum Calcium
|
Model No. |
Chemical Composition(%) |
|||
| Si | Al | Ba | Ca | |
| SiA1Ca |
10-40 |
5-20 |
5-20 |
≤1.0 |
Physical&Chemical Properties
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Appearance: It generally appears in the form of lumps or granules, with colors ranging from silver - gray to gray - white, and has a certain metallic luster on the surface.
Density: Due to the inclusion of elements with relatively large atomic masses, its density is relatively high, roughly between 2.5 - 3.5 g/cm³. The specific value depends on the precise content of each element.
Melting Point: The melting point usually ranges from 1000 - 1300 °C. Different composition ratios can cause fluctuations in the melting point. This melting - point range enables Silicon aluminum calcium to melt conveniently and play its role in high - temperature processes such as steelmaking.
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Stability: At room temperature, Silicon aluminum calcium has a certain degree of chemical stability. However, in special environments such as high - temperature, humid, or strong acid - base conditions, its chemical properties become more reactive. For example, in a high - temperature and oxygen - containing environment, silicon, aluminum, and calcium elements are prone to oxidation reactions with oxygen.
Reaction Activity: Silicon aluminum calcium has a strong deoxidizing ability. During the steel - making process, it can rapidly react with the oxygen in molten steel to form corresponding oxides, thereby reducing the oxygen content in the steel and improving the steel's purity. This is because silicon, aluminum, and calcium have a strong affinity for oxygen and can preferentially combine with oxygen, among which aluminum has a particularly outstanding deoxidizing ability.
Products Description
Raw Material Preparation: The main raw materials include ferrosilicon, bauxite, limestone, etc. These raw materials must first undergo strict screening and pretreatment. Ferrosilicon needs to ensure that the silicon content meets the requirements. Bauxite needs to go through ore - dressing to increase the aluminum grade, and limestone needs to remove impurities and control the particle size. For example, after crushing bauxite to an appropriate particle size, processes such as magnetic separation and flotation are used to remove impurities such as iron and titanium to ensure the quality of the final product.
Melting Process: The pretreated raw materials are added to an electric furnace or other furnaces in a specific proportion for melting. During the melting process, the temperature, time, and furnace atmosphere need to be precisely controlled. Usually, the melting temperature needs to reach 1500 - 1800 °C. At this high temperature, the raw materials gradually melt and undergo complex chemical reactions to achieve alloying between elements. After the melting is completed, through subsequent processes such as refining and slag - removal, a Silicon aluminum calcium product with uniform composition and qualified quality is obtained.
Applications
Iron and Steel Metallurgy Industry
- Deoxidizer: Silicon aluminum calcium is a commonly used deoxidizer in the iron and steel smelting process. Adding Silicon aluminum calcium during steelmaking can quickly and effectively remove the oxygen in molten steel, reduce oxide inclusions in the steel, and improve the quality and performance of the steel. Compared with single - element deoxidizers, the comprehensive deoxidation effect of Silicon aluminum calcium is better, which can make the steel purer, thus enhancing the strength, toughness, and processing performance of the steel.
- Alloying Agent: It can also be used as an alloying agent to introduce silicon, aluminum, and calcium elements into the steel, adjusting the chemical composition of the steel to meet the performance requirements of different steel varieties. For example, silicon can increase the strength and hardness of the steel, aluminum can refine the grains and improve the toughness of the steel, and calcium can improve the shape and distribution of inclusions in the steel, thereby improving the workability and corrosion resistance of the steel.
Casting Industry
- Inoculant: In the casting process, Silicon aluminum calcium can be used as an inoculant. It can promote the nucleation and growth of graphite in cast iron, refine the graphite, and make it evenly distributed, improving the structure and properties of cast iron. For example, in the production of gray cast iron and ductile iron, adding an appropriate amount of Silicon aluminum calcium inoculant can significantly improve the mechanical properties of cast iron, such as strength, toughness, and wear - resistance.
Packing and Shipping
Water-Proof Plastic woven bag, 1000kg per bag or as your requirements.
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