Ca31Si60 For Clean Steel
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Ca31Si60 For Clean Steel

Ca31Si60 improves inclusion control and reduces clogging in clean steel production.
Reliable supply, consistent quality, and fast delivery to support stable steelmaking operations.
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Product Introduction

Product Overview

 

Ca31Si60 calcium silicon alloy is specifically designed for clean steel production, where precise inclusion control and stable deoxidation performance are required.

With a balanced calcium and silicon ratio, this grade provides effective modification of non-metallic inclusions, improves steel purity, and enhances casting performance in modern steelmaking processes.

 

Key Benefits

  • Effective inclusion modification
  • Improved steel cleanliness
  • Better castability
  • Reduced nozzle clogging

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Technical Specifications

 

Item Specification
Calcium (Ca) 30–32%
Silicon (Si) 58–62%
Aluminum (Al) ≤ 1.5%
Carbon (C) ≤ 0.5%
Size 10–50 mm / Customized
Form Lump

 

Why Ca31Si60 Is Used for Clean Steel

 

In clean steel production, controlling non-metallic inclusions is critical.

Typical issues include:

  • alumina inclusions (Al₂O₃)
  • clogging in continuous casting nozzles
  • poor steel fluidity
  • surface defects in final products

Ca31Si60 helps modify these inclusions into low-melting-point calcium aluminates, which are:

  • more fluid
  • less likely to accumulate
  • easier to remove

👉 This significantly improves steel cleanliness and casting stability.

 

 

How Ca31Si60 Works in Steelmaking

 

During secondary refining (LF / RH processes), Ca31Si60 reacts with oxygen and sulfur in molten steel.

Inclusion Modification

Transforms solid alumina inclusions into liquid calcium aluminate.

Deoxidation Effect

Silicon contributes to deoxidation, reducing oxygen content.

Nozzle Protection

Modified inclusions reduce adhesion and prevent clogging during continuous casting.

👉 The combined Ca + Si effect makes this grade highly effective for clean steel processes.

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Why Ca31Si60 Instead of Other Grades

 

Compared with lower calcium grades:

  • stronger inclusion modification ability
  • more stable performance in refining
  • better balance between cost and efficiency

Compared with higher calcium grades:

  • easier handling and control
  • reduced reaction volatility
  • more stable process behavior

👉 Ca31Si60 offers a practical balance for most clean steel applications.

 

Packaging

 

  • 1 MT big bags
  • steel drums (optional)
  • moisture-proof packaging

 

Delivery and Supply Capability

 

  • stable production capacity
  • consistent batch supply
  • lead time: 7–15 days
  • support for long-term contracts

With decades of production and export experience, we understand the requirements of different markets and ensure stable supply, consistent quality, and reliable delivery for long-term cooperation.

 

Quality Control

 

Each batch is tested for:

  • chemical composition
  • size distribution
  • consistency

COA is provided for traceability.

 

If you are looking to improve steel cleanliness and casting performance:

👉 Contact us to get the latest price, specifications, and supply support.

 

Request the latest Quote

 

FAQ

 

What is Ca31Si60 used for?

It is used for inclusion modification and deoxidation in clean steel production.


Why is calcium important in steelmaking?

Calcium modifies solid inclusions into liquid phases, improving steel cleanliness.


Does Ca31Si60 prevent nozzle clogging?

Yes, it reduces clogging by modifying alumina inclusions.


Can it be used in continuous casting?

Yes, it is widely used to improve casting stability.


What is the delivery time?

Typically 7–15 days depending on order size.

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