Continuous Casting Powders
Application Industry: Continuous Casting Machine (CCM) and Steel Billet / Bloom / Slab Casting
Application Equipment: Continuous Casting Mould, Tundish, Submerged Entry Nozzle (SEN), and Strand Casting of Steel
Size: Custom continuous casting powders chemistry grade per continuous casting machine design and steel grade (free engineering on request)
Products Overview
Our Continuous Casting Powders is a high-performance auxiliary refractory material engineered for continuous casting machine (CCM) of steel billet, bloom, slab, and round billet casting in steel mills. Also known as mould powder, mould flux, casting powder, or mould flux slag, this product is manufactured by Zhengzhou caihua from precisely formulated blends of mineral oxides, fluorides, and carbon raw materials. The product family serves five engineering-proven functions during continuous casting verified by IspatGuru: (i) protect liquid steel against oxidation, (ii) provide lubrication for the solidifying steel shell, (iii) control and optimize horizontal and vertical heat transfer from liquid steel to mould and ambient, (iv) absorb non-metallic inclusions from the liquid steel to produce cleaner cast steel, and (v) provide chemical protection to the liquid steel from oxidation and other undesired reactions.
The Continuous Casting Powders product family is offered in multi-grade chemistry series based on the industry-standard composition range verified by IspatGuru industry reference. The main CaO+SiO2 matrix covers around 70 percent of the total composition with CaO in the range of 22 to 45 percent and SiO2 in the range of 17 to 56 percent, with basicity ratio CaO/SiO2 normally in the range of 1.0 to 1.3 and some powder grades at 0.8. Auxiliary oxides include MgO 0-10 percent, Fe2O3 0-6 percent, Al2O3 0-13 percent, Na2O 0-25 percent, K2O 0-2 percent, Fluorine 2-15 percent, with Free Carbon 2-20 percent. The mould powder structure within the mould consists of three layers verified by DBM Steel industry reference: the original (solid) slag layer below 500 °C, the sintered layer at 600-900 °C, and the liquid slag layer at 1300-1500 °C in direct contact with the molten steel, typically 10mm-15mm thick. The product family is engineered to provide stable chemistry and consistent performance across the full continuous casting cycle from tundish to strand cutoff, with stable quality and good engineering performance across the global continuous casting value chain.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Continuous Casting Powders grade is engineered to ASTM, GB/T, and ISO refractory standards. For an overview of the broader catalogue, see the Continuous Casting Machine (CCM) category, or contact our technical sales team for a free consultation against your continuous casting machine design and steel grade.
Product Features
Features:
- Manufactured by Zhengzhou caihua as high performance continuous casting powders also known as mould powder, mould flux, casting powder, or mould flux slag for continuous casting of liquid steel
- Engineering-proven characterized with stable chemistry, controlled melting rate, low viscosity, optimized heat transfer control, and inclusion absorption capability for continuous casting process stability
- Multi-grade chemistry series covering CaO 22-45 percent, SiO2 17-56 percent, basicity ratio CaO/SiO2 0.8-1.3, MgO 0-10 percent, Fe2O3 0-6 percent, Al2O3 0-13 percent, Na2O 0-25 percent, K2O 0-2 percent, Fluorine 2-15 percent, and Free Carbon 2-20 percent for matching different casting speeds and steel grade requirements
- Three physical forms available including granular, powder form, and extruded powders to suit diverse steel grades and casting sizes per IspatGuru industry reference
- Widely used as the continuous casting powders for continuous casting machine (CCM) of steel billet, bloom, slab, and round billet casting in steel mills worldwide
Product Specification
Continuous casting powders is engineered per buyer’s continuous casting machine design and steel grade. Custom chemistry and grade available on request.
| Items | Low-speed billet | Medium-speed bloom | High-speed slab | Specialty steel | Peritectic steel |
|---|---|---|---|---|---|
| CaO content (%) | 22-30 | 28-35 | 33-40 | 38-45 | 30-38 |
| SiO2 content (%) | 35-56 | 30-45 | 22-35 | 17-25 | 25-35 |
| CaO/SiO2 basicity | 0.8-0.9 | 0.9-1.1 | 1.1-1.3 | 1.3-1.5 | 1.0-1.2 |
| Al2O3 content (%) | 3-6 | 4-8 | 5-10 | 6-13 | 4-8 |
| Free Carbon (%) | 2-5 | 5-10 | 10-15 | 15-20 | 5-15 |
| Liquid Slag Layer Temp (°C) | 1300-1500 | 1300-1500 | 1300-1500 | 1300-1500 | 1300-1500 |
Note: Continuous casting powders is a customized auxiliary refractory product. The chemistry ranges above are based on the IspatGuru industry reference and the three-layer mould powder structure (Raw / Sintered / Liquid) is verified by DBM Steel industry reference. Actual chemistry, basicity ratio, viscosity, melting point, and bulk density can be customized to your continuous casting machine design and steel grade requirements. For project-specific chemistry and grade, contact CH Refractories engineering.
Product Applications
Continuous Casting Powders is a high-performance auxiliary refractory material engineered for continuous casting machine (CCM) of steel billet, bloom, slab, and round billet casting in steel mills. Also known as mould powder or mould flux, this product is manufactured by Zhengzhou caihua from precisely formulated blends of mineral oxides, fluorides, and carbon raw materials. The product family serves five engineering-proven functions verified by IspatGuru: protect liquid steel against oxidation, provide lubrication for the solidifying steel shell, control heat transfer, absorb non-metallic inclusions, and provide chemical protection, with stable quality and good engineering performance across the global continuous casting value chain.
Application Industry: Continuous Casting Machine (CCM).
Target Equipment: Continuous Casting Mould, Tundish, Submerged Entry Nozzle (SEN), and Strand Casting of Steel of small, medium-size, and large steel mill operations across the global steel industry value chain.
Specific Application Zones: The Low-speed billet grade is engineered for general continuous casting machine service with CaO content 22-30 percent, SiO2 content 35-56 percent, basicity ratio 0.8-0.9, Al2O3 content 3-6 percent, Free Carbon 2-5 percent, and Liquid Slag Layer Temperature 1300-1500 °C. The Medium-speed bloom grade is engineered for medium-speed continuous casting service with CaO content 28-35 percent, SiO2 content 30-45 percent, basicity ratio 0.9-1.1, Al2O3 content 4-8 percent, Free Carbon 5-10 percent, and Liquid Slag Layer Temperature 1300-1500 °C. The High-speed slab grade is engineered for high-speed continuous casting service with CaO content 33-40 percent, SiO2 content 22-35 percent, basicity ratio 1.1-1.3, Al2O3 content 5-10 percent, Free Carbon 10-15 percent, and Liquid Slag Layer Temperature 1300-1500 °C. The Specialty steel grade is engineered for specialty steel continuous casting service with CaO content 38-45 percent, SiO2 content 17-25 percent, basicity ratio 1.3-1.5, Al2O3 content 6-13 percent, Free Carbon 15-20 percent, and Liquid Slag Layer Temperature 1300-1500 °C. The Peritectic steel grade is engineered for peritectic steel continuous casting service with CaO content 30-38 percent, SiO2 content 25-35 percent, basicity ratio 1.0-1.2, Al2O3 content 4-8 percent, Free Carbon 5-15 percent, and Liquid Slag Layer Temperature 1300-1500 °C. All five grades deliver stable chemistry and consistent performance for continuous casting machine service, with stable quality and good engineering performance across the global continuous casting value chain.
CH Refractories is a Continuous Casting Powders manufacturer in China, Henan, Zhengzhou. The complete Continuous Casting Powders product family is manufactured in our Xinmi City, Zhengzhou, Henan, China facility to ASTM, GB/T, and ISO refractory standards. Each batch is supported by free consultation, on-site technical support, and a dedicated engineering team serving Continuous Casting Machine (CCM) customers across the global continuous casting value chain.
