Mixture and Refractory Product Having High Resistance to Hydration Produced Starting from the Same

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This patent discloses a refractory composition that includes finely ground silicon dioxide powders, specific granular components such as oxides, carbides or nitrides, carbon-based binders, and antioxidants. By using particularly fine silicon dioxide (nano-scale) and combining it with other specialized components, the resulting ceramic or refractory products demonstrate greatly improved resistance to hydration. This means that these materials do not easily deteriorate or crack when exposed to moisture over time, which is a significant improvement over conventional refractory products. The patent also covers the methods for producing these materials and the shaped bodies made from them.

Use CasesContent extracted from patent full text and abstract with AI.

• Lining for metallurgical vessels (e.g., converters, ladles) in steel production
• Key components in continuous casting processes, such as slide gate plates and submerged entry nozzles
• High-temperature pipes and components for chemical and waste incineration industries
• Protective heat shields and membranes in industrial furnaces
• Insulating materials used in kilns or cement manufacturing
• Production of graphite electrodes used in electric arc furnaces

BenefitsContent extracted from patent full text and abstract with AI.

• High resistance to hydration, preventing spalling and cracking when exposed to water over time
• Improved oxidation and thermal shock resistance, increasing product durability in harsh environments
• Longer service life for refractory linings and components, leading to reduced maintenance and replacement costs
• Versatility in production methods and applicability to different shaped ceramic or refractory products
• Ability to tailor properties by modifying particle size, binder selection, and additive content
• Retaining mechanical strength and integrity after prolonged exposure to moisture and during high-temperature operations

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Patent Abstract

Composition comprises one or more finely ground silicon dioxide powder having an average particle size of 2-100 nm with a BET surface area of at least 30 m 2>/g, one or more granular components selected from oxides, carbides and nitrides having an average particle size of less than 0.5 mu m to 30 mm, one or more carbonaceous binders and/or carbon and one or more antioxidants having an average particle size of less than 0.5 to 250 mu m. Independent claims are also included for the following: (1) Method for the production of a ceramic or refractory molded body made from the above composition; and (2) Molded body produced by the above process.