Rock gold ore open pit mining of increasing, as Wulaga gold, the gold cartridge, Yindongpo gold, production scale were 800 ~ 1200t / d. However, compared with foreign countries, China's open-pit mining rock gold mines are still small in scale. For example, the ore production in the Golden Sanding Gold Mine in Canada is 5000t/d, the US Michael Gold Mine is 3200t/d, and the Australian Pargin Mine is 2800t/ d. According to the characteristics of China's gold deposits, the proportion of large deposits and thick ore bodies is small, and the level of mine mechanization equipment is generally high, which restricts the rapid development of open-pit mining technology in China's rock gold deposits.
Since the early 1980s, Chinese mining scholars and engineers have carried out a large number of scientific research and attempts on the open pit mining technology, such as research on the steep mining process, parameter optimization of step blasting and slope stability. Experiments have achieved better economic efficiency. With the continuous improvement of the mechanization of mines and the gradual improvement of the mining technology, the scale of open-pit mining rock gold deposits is bound to expand.
This article mainly includes six parts:
1. Application of horizontal expansion and transverse skew mining in steep mining;
Second, the application of combined step steep mining
Third, the application of open-air underground mining schemes;
Fourth, the application of the air medium does not couple the mixed drug structure;
5. Application of deep hole loosening controlled blasting in Haotian Mine;
6. Application of high-spray grouting technology for water blocking in the Quaternary strata of open pits; please refer to the relevant title of this website for details.
the genuine Parker fixed hammer Impact Crusher for the production of high quality, high strength cubical shaped aggregates in secondary or tertiary, low abrasion applications.
No shear or compressive crushing action takes place and every stone is broken by impact forces at its weakest point to provide an exceptionally strong and well shaped product.
Feed material is broken along natural lines of weakness
Soft material is smashed, leaving a stronger aggregate product
Choice of operating speeds to increase fines production, when required
All wear components are readily replaced, when required
Wear resisting manganese steel hammers are fitted to the rotor
Interchangeable wear resisting manganese steel breaker bars form the
Impact Crusher
Impact Crusher,Mobile Impact Crusher,Horizontal Impact Crusher,Impact Rock Crusher
Shenyang Sanland Mining Equipment Manufacture Co., Ltd. , https://www.sanlandcrusher.com