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Media / Application stories / Atlas Copco’s FlexiROC D65 Makes New Contributions to Wengfu Phosphate Mine

Atlas Copco’s FlexiROC D65 Makes New Contributions to Wengfu Phosphate Mine

2016-03-03

With the global mining sector remaining sluggish in 2015, China’s mining sector also faced a “perfect storm” of difficulties—falling prices, heightened costs and plunging profits. In such a turbulent market environment, the Wengfu Phosphate Mine under Wengfu Group boldly adopted FlexiROC D65 down-the-hole surface drill rigs to improve production efficiency and reduce operating costs, adding a new weapon to its arsenal for battling mining sector blues.

Atlas Copco China - A FlexiROC D65 operating in the Chuanyandong mining area

A FlexiROC D65 operating in the Chuanyandong mining area


Scientific Investment

Atlas Copco China - Zhao Mingxing, Vice Production Director of the Chuanyandong mine

Zhao Mingxing, Vice Production Director of the Chuanyandong mine


Wengfu Phosphate Mine is located in Weng’an County and Fuquan City of Guizhou Province. Phase I mining work is currently nearing conclusion, and the Phase II Chuanyandong mine was formally put into operation in April 2015. The mine area extends 2.4km from south to north and 1.6km east to west, and covers a total of 3.4 square kilometers. Phosphate ore reserves and total overburden are expected to reach 90 million tons and 240 million cubic meters, respectively. In 2015, the mine had a phosphate ore output of 3.5 million tons and total overburden amount of 20.5 million cubic meters, making it the largest open-pit mine in the country.

In recent years, Wengfu Phosphate Mine has endeavored constantly to promote modernized mine construction and transition from being an “independently operated” mine to a “technical management” type of mine. Perforated blasting occupies an obviously important place as the first link of the whole mining process. Contractors are required to complete production tasks based on a schedule, so efficiency requirements for drilling equipment are especially high. Equipment needs to be able to complete urgent production tasks at any time. According to Zhao Mingxing, deputy production director for the Chuanyandong mine, there are six Atlas Copco FlexiROC D65 down-the-hole surface drill rigs in the mine, three of which were purchased in 2015. These rigs are owned by different contractors and have made great contributions to safe and efficient production at the mine.

Efficient Production

Atlas Copco China - Manager Li Liangpeng

Manager Li Liangpeng


In June 2015, Li Liangpeng, head of one of the Chuanyandong mine contractors, purchased an Atlas Copco FlexiROC D65 down-the-hole surface drill rig after conducting a detailed investigation of all the different surface drill rigs on the market. When talking about the original intention behind purchasing a FlexiROC D65, Li said frankly, “Among other things, flexible action, high efficiency, comfortable operation and low fuel consumption were the most important aspects that attracted us.”

Rock hardness at the Chuanyandong mine is F=8, and a top-to-bottom bench blasting method is adopted. Detailed parameters include: bench height, 12m; extra depth, 1.5m; hole depth, 13.5m; hole diameter, 203mm; drilling angle, 90°; and hole net dimensions: 6×7m. Since Mr. Li’s FlexiROC D65 went into operation on June 1, 2015, it has achieved total drilling footage of 76,000m; the engine has had 2,295 hours of total run time, with an impact time of 1,485 hours; and the integrated drilling efficiency and net drilling efficiency are 33m/h and 51m/h respectively. Under optimal conditions, the rig has drilled 80 holes in 24 hours, with maximum drilling efficiency of up to 45m/h.

Pushing Forward

Atlas Copco China - Overall view of Chuanyandong mining area, Wengfu Phosphate Mine

Overall view of Chuanyandong mining area, Wengfu Phosphate Mine


In the Chuanyandong mining area, two other contractors besides Mr. Li’s team are using the Atlas Copco FlexiROC D65. Their identical choice again reflects the outstanding performance of the FlexiROC D65.

In discussing future development, Li said that given the sustained sluggishness in the mining market, mining enterprises have to invest more carefully, and only providers of reliable products and quality services, like Atlas Copco, can become trustworthy partners. “It’s Atlas Copco that has given us the courage and strength to push forward when the market is at a low ebb. We will work together and jointly embrace the industry’s promising future.”

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Atlas Copco China - Four FlexiROC D65 drill rigs operating in the Chuanyandong mining area

Four FlexiROC D65 drill rigs operating in the Chuanyandong mining area



Atlas Copco’s Mining and Rock Excavation Technique business area provides equipment for drilling and rock excavation, a complete range of related consumables and service through a global network. The business area innovates for sustainable productivity in surface and underground mining, infrastructure, civil works, well drilling and geotechnical applications. Principal product development and manufacturing units are located in Sweden, the United States, Canada, China and India.

Surface and Exploration Drilling is a division within Atlas Copco’s Mining and Rock Excavation Technique business area. It develops, manufactures, and markets rock and exploration drilling equipment for various applications in civil and geotechnical engineering, quarries and both surface as well as underground mines worldwide. Atlas Copco's strong focus on innovative product design and service support systems gives added customer value. The main production centers are in Sweden, Italy, Austria, India, Japan and China. The divisional headquarters is in Örebro, Sweden.