In 2018, we have successfully developed slurry pumps lined with corundum to fill the gap in this field in China. This special corundum is made of AL2O3 as the main raw material, rare metal oxide as the flux, and is roasted at a high temperature of 1700 ℃. The hardness is second only to diamond. Its unique abrasion resistance and corrosion resistance not only have a service life and adaptability unmatched by metal pumps, reduce a large amount of material consumption, reduce the user’s operation and maintenance costs, but also ensure the safety, efficiency and long-term operation of the entire equipment, greatly Increasing the productivity.