Where is a ball mill that can make sand? What is the cost of a ton of ball milling mechanism sand?
Posted onHigh-quality sand is the support of various buildings. Previously, natural river sand was the main source of sand for construction. Many people felt that it was inexhaustible, but since last year, “the earth is almost empty of sand.” The news is overwhelming, and various regions have also implemented a “prohibition of mining” to restrict the exploitation of natural river sand.