Original Title From Perforation Blasting to mining dth bit
Dumping Understanding the Six Processes of Open-pit Mining in One Article! The mining process of open-pit mine is relatively simple mainly including drilling blasting mining loading and transportation and rock dumping Next we will talk about the mining technology of open-pit mines in detail I Perforation work Perforation is the primary process of open-pit mining The cost of perforation accounts for about 10% -15% of the total production cost 1 Down-the-hole drill The down-the-hole drilling machine has the advantages of large drilling angle change range high mechanization degree reduction of auxiliary operation time improvement of the operation rate of the drilling machine flexibility of the down-the-hole drilling machine light equipment weight and low investment cost and particularly controls the ore grade by drilling various inclined holes can eliminate toes reduce large blocks and improve the blasting quality Therefore the down-the-hole drill is widely used in small and medium-sized mines at home and abroad and is suitable for medium hard rock drilling 2 Rotary drill Rotary drilling rig is a new type of drilling equipment developed on the basis of rotary drilling rig which has the characteristics of high drilling efficiency low operation cost high degree of mechanization and automation and is suitable for drilling operations of various hardness of ore and rock At present it has become a common drilling equipment used in open-pit mines all over the world