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Guoliang company owns three wholly-owned subsidiaries and one branch. It is a high-tech enterprise specializing in the integrated solution of refractories for high-temperature industry, providing customers with general contracting services and refractory products.
Product Categroy
Metallurgical Auxiliary Materials
Metallurgical auxiliary materials play an important supporting role throughout steelmaking, secondary refining and continuous casting. Although they are not part of the permanent refractory lining, their performance can directly influence molten steel temperature control, oxidation protection, steel cleanliness and casting stability.
GUOLIANG provides metallurgical auxiliary materials for molten steel handling and continuous casting applications, with current product solutions including covering agents and continuous casting mold powder.
Our materials can be selected according to steel grade, process position, casting conditions and required metallurgical performance.
A covering agent, also called covering powder, is applied to the molten steel surface in a steel ladle or tundish.
It forms a protective layer that helps:
GUOLIANG FGJ series covering agents are available with different carbon content and CaO/SiO₂ ratios for different steel grades and operating requirements.
→ View Steel Ladle & Tundish Covering Agent
Mold powder, also known as mold flux or continuous casting powder, is added to the molten steel surface inside the continuous casting mold.
After heating, the powder melts and forms a slag layer and slag film between the solidifying steel shell and the copper mold.
Its primary functions include:
GUOLIANG BST series mold powders are available for ultra-low carbon steel, carbon steel, low-alloy steel and high-carbon steel applications.
→ View Continuous Casting Mold Powder
Although both products are metallurgical powders used around molten steel, they have different application positions and functions.
| Product | Application Position | Main Functions |
|---|---|---|
| Covering Agent | Steel ladle / tundish | Thermal insulation, oxidation protection, inclusion absorption |
| Mold Powder | Continuous casting mold | Lubrication, heat-transfer control, insulation, oxidation protection and inclusion absorption |
A ladle or tundish covering agent is primarily selected according to thermal insulation, steel cleanliness and protection requirements.
A continuous casting mold powder must additionally provide suitable melting, viscosity, lubrication and heat-transfer characteristics for the casting machine.
Selecting the correct material for each process position is therefore essential.
GUOLIANG metallurgical auxiliary materials can support different stages of steel production, including:
Steelmaking → Ladle Treatment → Secondary Refining → Tundish → Continuous Casting Mold
Typical applications include:
Different process stages require different material properties, so product selection should always consider actual operating conditions.
When purchasing steelmaking auxiliary materials, chemical composition alone should not be the only selection criterion.
First determine whether the material will be used in a ladle, tundish or continuous casting mold.
The required performance differs significantly between these positions.
Carbon content and alloy composition influence molten steel behavior and solidification characteristics. Different steel grades may therefore require different covering agent or mold powder formulations.
Molten steel temperature affects melting behavior, thermal insulation and interaction with metallurgical powders.
For continuous casting mold powder, casting speed is particularly important because it affects slag consumption, infiltration and lubrication requirements.
Billet, bloom and slab casters have different mold geometries and heat-transfer requirements.
Ladle holding time, refining time and continuous casting sequence can influence the required stability of the metallurgical auxiliary material.
When replacing an existing material, provide details about issues such as:
Analyzing actual operating problems helps identify a more appropriate product grade.
Different physical and chemical properties can affect how auxiliary materials behave in actual steelmaking conditions.
Depending on the product, important parameters may include:
For mold powder, viscosity and melting behavior are particularly important because liquid slag must infiltrate between the strand shell and mold to provide lubrication.
For covering agents, thermal insulation, coverage stability and compatibility with the steelmaking process are generally more important.
GUOLIANG can supply materials for different steelmaking conditions, including:
Covering agents and mold powders can be selected according to carbon content, operating temperature and casting conditions.
Material chemistry should be evaluated together with steel composition and required casting performance.
Different solidification characteristics may require mold powder with suitable viscosity, melting characteristics and heat-transfer behavior.
For steel grades with strict chemistry and cleanliness requirements, carbon content and metallurgical compatibility should be considered carefully.
To help us recommend an appropriate metallurgical auxiliary material, please provide:
For replacement projects, an existing technical data sheet and operating results can make product matching more accurate.
GUOLIANG supplies metallurgical auxiliary materials and refractory products for steelmaking and continuous casting applications.
By combining metallurgical auxiliary materials with steel ladle, tundish, BOF/EAF and continuous casting refractory solutions, we can support steel plants, refractory distributors and engineering companies with product selection based on actual operating conditions.
Whether you need mold powder for a continuous caster or covering agent for a ladle or tundish, our team can evaluate the existing specification and process requirements before recommending a suitable grade.
Metallurgical auxiliary materials are materials used to support steelmaking, refining, molten steel handling and continuous casting processes. Depending on the application, they can provide thermal insulation, oxidation protection, inclusion control, lubrication or heat-transfer control.
GUOLIANG currently supplies covering agents for steel ladles and tundishes as well as mold powder for continuous casting molds.
Covering powder is primarily used on molten steel surfaces in ladles and tundishes for insulation and oxidation protection. Mold powder is used inside a continuous casting mold and additionally provides strand lubrication and controlled mold heat transfer.
Yes. Steel chemistry, carbon content, operating temperature, casting speed and process position can all influence material selection.
Yes. Provide your current technical specification, steel grade and operating conditions so the required chemical and physical properties can be evaluated.
Provide the product type, steel grade, application position, operating conditions, current specification and required quantity. For mold powder, casting section and casting speed should also be provided.
Send us your steel grade, process conditions and current material specification. GUOLIANG can recommend suitable mold powder or covering agent grades for your ladle, tundish or continuous casting application and provide a quotation based on your requirements.
If you are interested in any of our products or would like to make your customized order, please feel free to contact us. We are looking forward to establish successful business relations with you.
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