Annual worldwide refractory consumption in the production of cement is estimated to be more than 5 million metric tons, or 12% of the total world refractory market, and growing. Monolithic refractory makes up a good chunk of that market, as much as 40%, and rightfully so. It’s faster and easier to install than refractory brick, which is why as much as 2.3 million metric tons of monolithic refractory is used each year.
Because of equipment improvements and material innovations – such as no-cement, colloidal silica, which offers optimal alkali resistance and bonding properties – contractors are installing monolithic refractories in areas of cement kilns once reserved for brick refractory. This includes the nose ring and tail ring, which is also called the inlet cone. These improvements and innovations also are making it easier and more cost-effective for brick refractory contractors to make the switch.