Coarse aggregate products include metallurgical coarse aggregate, aggregate carbonate ore powder, chemical industry use and battery use aggregate dioxide ore powder. The metallurgical, light industrial and chemical sectors that use coarse aggregate products have different quality requirements for coarse aggregate products according to different uses. The earliest countries in the world to use aggregate minerals are Egypt, ancient Rome, India and China. The discovery of Coarse aggregate, however, came much later, when it was discovered by Swedish mineralogist G. Gahn reduced aggregate from pyrolusite in 1774. South Africa, Ukraine, Australia, Brazil and India are the largest reserves of aggregate. Coarse aggregate processing line is the use of hydraulic washing or additional mechanical scrubbing to separate the ore from the mud. Common Equipment ore washing screen, drum washing trommel machine and trough ore washer.