High-Purity Silicon Calcium Lumps
High-Purity Silicon Calcium Lumps suppliers

High-Purity Silicon Calcium Lumps

Developed for ductile iron and precision castings, this high-purity CaSi lump features ultra-low Aluminum (Al≤0.8%) and Sulfur (S≤0.02%). It effectively suppresses slag formation and hydrogen porosity during melting, significantly improving the pass rate of non-destructive testing. The high-density structure keeps fines below 2%, making it suitable for automated feeding systems. Every shipment includes an ICP Spectroscopy report, providing full transparency to help high-end foundries achieve stable process control and superior mechanical properties.

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Product Introduction

Product Description

In precision casting, microscopic gas pores or slag inclusions often lead to batch rejection. These defects are frequently traced back to impurities such as aluminum and sulfur in deoxidizers. Our High-Purity Silicon Calcium Lumps are developed to address exactly this issue. By limiting aluminum to ≤0.8% and sulfur to ≤0.02%, we significantly reduce slag formation and gas sources at the metallurgical level. The high-density lump structure minimizes fines generation during transportation and handling, while preventing dust emissions during feeding-contributing to a cleaner workshop environment. Crucially, we provide ICP spectroscopy reports for every batch, offering full transparency on trace elements and enabling more precise process control. For foundries pursuing higher yield rates and superior mechanical properties, this high-purity CaSi grade is a competitive advantage you can measure.

Chemical Composition

Element	Typical Content
Si	58–62%
Ca	28–32%
Al	≤ 0.8%
S	≤ 0.02%
P	≤ 0.025%
C	≤ 0.6%

Particle Size

20–80 mm(Low-dust lumps)

0–5 mm(Controlled fines for inoculation)

Custom crushing & screening available

Product Advantages

1.Ultra-low aluminum and sulfur content to raise the flaw detection pass rate of castings
2.Low dust emission improves workshop environment and workers' health
3.Customized indicators available for high-end clients
4.Third-party certification by SGS/BV with transparent and reliable test data

Packing & Certification

1MT UV-resistant big bags, moisture-proof liner

FOB Qingdao / CIF ASEAN ports

ISO 9001, Mill Test Certificate, Third-party inspection supported

Company Strength

1.Equipped with in-house crushing and screening lines for highly consistent particle size
2.Exported to high-end foundries in Japan, Germany and Italy
3.Dual-language (Chinese & English) quality inspection reports and technical support available

FAQ

Q: What is the minimum Al content you can achieve?
A: It can be controlled to ≤0.5% as required.

Q: Do you accept small trial orders?
A: Yes, trial orders start at 5MT MOQ.

Q: What is the delivery lead time?
A: Sufficient stock available, goods shipped within 7–15 days.

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