Dense corundum, also known as high-density refractory corundum, is a type of refractory material that exhibits excellent heat resistance and mechanical strength. It is commonly used in high-temperature applications such as furnace linings, kiln furniture, and other refractory installations.

Here are some general guidelines on how to use dense corundum:

1. Surface Preparation: Before applying dense corundum, ensure that the surface is clean and free from any contaminants, residues, or loose particles. Remove any existing refractory materials or damaged sections.

2. Mixing: Dense corundum is typically supplied in a powdered or granular form. It needs to be mixed with the appropriate binder and water to form a workable consistency. Follow the manufacturer's instructions regarding the ratio of powder to binder and water.

3. Application Methods: Dense corundum can be applied using various methods depending on the specific application and requirements. The two common methods are ramming and gunning:

   - Ramming: For ramming, use a wooden or rubber mallet to compact the corundum mixture into the desired shape and thickness. Ensure proper compaction to eliminate voids and achieve a dense and uniform structure.

   - Gunning: Gunning involves using a gunning machine to spray the corundum mixture onto the refractory surface. This method is suitable for repairing or lining larger areas or complex shapes.

4. Curing and Drying: After application, allow the dense corundum to cure and dry according to the manufacturer's recommendations. This typically involves a gradual drying process to remove moisture and achieve the desired strength and stability.

5. Firing: Once the dense corundum has dried, it needs to undergo a firing process to achieve its full strength and refractory properties. Follow the recommended firing schedule to gradually heat the corundum to the desired temperature, ensuring that the heating rate and temperature profiles are controlled to prevent thermal stress.

It is important to note that the specific procedures for using dense corundum may vary depending on the manufacturer, as well as the unique requirements of the application. Therefore, always refer to the product data sheets and instructions provided by the manufacturer for detailed information on handling, mixing ratios, application methods, curing, and firing. We have a professional team of engineers, welcome to consult.