China Jindu Shandong Zhaoyuan 14th Gold Festival and 4th Internet Gold Festival Opens
2020-08-28
In the golden autumn of August, we welcome the grand gathering. On August 28, the 14th China Gold Capital · Shandong Zhaoyuan Gold Festival, sponsored by China Gold Association and Zhaoyuan Gold Association, and undertaken by Shandong Zhaojin Group and Shandong China Mining Group, was grandly opened in Zhaoyuan, Shandong.
How does the column tooth drill bit fix the alloy to the drill bit
2020-08-25
The method of fixing teeth of drill bit refers to how to fix the hard alloy column teeth of rock drilling on the drill bit body. At present, there are three general methods of fixing teeth in China's drilling tool industry: welding, cold fixing teeth and hot setting teeth.
Prop up steel bars and iron bones for safe production
2020-08-25
Recently, on the basis of the two rapid tunneling lines of fully mechanized excavation and rock roadway gun excavation in the early stage, Chaili Coal Mine of Shaneng Zao Mine has successfully applied the integrated system of rock tunneling machine, hydraulic anchor drill and automatic shotcrete in the return air roadway of the south wing bypass, and has built the first rapid tunneling line of fully mechanized excavation in rock roadway since the mine was built, increasing the tunneling efficiency by 40%.
New Discovery of 112 Large and Medium-sized Mineral Areas in Inner Mongolia
2020-08-22
Since the implementation of the strategic action of prospecting breakthrough in Inner Mongolia Autonomous Region in 2011, a total of 31.197 billion yuan has been invested in exploration. Major breakthroughs have been made in basic geological survey, important mineral exploration, old mine prospecting, scientific and technological support, and mineral resources conservation and comprehensive utilization, resulting in good economic and social benefits. Coal, copper, lead and zinc, tin, gold, silver, and crystalline graphite have fully completed or exceeded the ten-year expected target, and newly discovered Shuangjianzishan silver polymetallic deposit, Zalag Amu copper deposit, and Cao Si Yao There are 112 large and medium-sized mineral deposits including the molybdenum deposit and the Fuxing Tun silver polymetallic deposit
2020-08-18
Wuzhai County, Xinzhou City, Shanxi Province, is located in the west of Xinzhou City. It is one of the rich water areas in Shanxi Province. There are many rivers in the territory. It is known as the county "sitting on the reservoir". The Nanshan ecological and natural tourism area is known as the "Wuzhaigou" in the north ". Wuzhai County is rich in limestone, granite and clay reserves, with an area of about 183.3 square kilometers and a total storage capacity of 50 million cubic meters. After investigation, the national quality inspection department determined that the granite texture of Wuzhai County, such as Binghua Green, Guanyin Green and Jingtang Red, is Class A; but it is this high-quality granite mineral resource that is hidden on the mountain next to the road in the "Wuzhaigou" scenic spot.
2020-08-18
The ball tooth drill bit is composed of hard alloy column teeth inlaid on the drill bit body. Compared with the chip bit, the ball tooth bit is free, and the number and position of the side and middle teeth can be reasonably determined according to the diameter of the drilling hole and the size of the rock breaking load, and the diameter of the bit is not limited. And because of its multi-point crushing, the efficiency of rock breaking is higher, which can not only effectively eliminate the blind area of rock breaking, but also avoid the repeated crushing of rock chips. In addition, because the abrasion of the alloy column is higher than that of the flake bit, its non-grinding life is longer, and the re-grinding workload is small, which shows high value under the operating conditions of mechanized rock drilling jumbo and deep hole mining.
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