Mine engineering

Since the 1950s, CINFhas undertaken thousands of consulting, design and scientific research projects for mining and processingprojects bothat home and abroad, covering the whole Chinaand many overseas countries. It relates to metal mines such as copper, lead, zinc, aluminum, gold, nickel, tungsten, molybdenum, bismuth, tin, lithium, antimony, mercury, silver, iron, vanadium, titanium, tantalum, niobium, platinum, palladium, indium, cobalt,rare earth metals, and nonmetal mines such as phosphorus, mirabilite, wollastonite, granite, limestone, sulfur, realgar and fluorite.We havealso completed the design of large-scale chamber blasting, controlled blasting, sightseeing elevators, passenger cableway projects and mine freight cableway projects.

CINF has filled the world gap with the development and application of super-large karst accumulation bauxite deposits and the separation technology of complex refractory polymetallic ores.We haveaccumulated rich experience in the design and scientific research of underground large-water deposit mining with especially complicated hydrogeology, super-large open-pit mines with high alpine and high altitude, and underground mining mines with a depth of more than 1,000 meters. We have designed several digital intelligent mines,the copper mine with the currenthighest altitude (4600 ~ 5540m) and the largest scale in China (the design scale is 150kt/d),the currentdeepest shaft (1526.5 m deep), the largest diameter shaft (11m net diameter) and the highest lifting speed shaft (16.5 m/s) in China.

CINF’score technologies engaged in mine engineering design, consultation and scientific research have been granted more than 180 patents, 3 major scientific and technological achievement prizes for national scientific and technological research, 3 second and third prizes for national scientific and technological progress, 2 gold, 4 silver, 1 bronze and 8 other national prizes for national excellent engineering design. Wehavewon more than 100 Provincial and Ministerial Excellent Engineering Design Awards and Science and Technology Awards. As the editor-in-chief of monographs National Survey and Design Registered Mining/Mineral Engineer (Mining) Qualification Examination Professional Examination Guidance Textbook, national standard Non-ferrous Metal Mining Design Code(GB50771-2012), industry standard Bauxite Mine Safety Production Technical Regulations, we haveparticipated in the compilation of more than 10 national and industrial engineering construction standards and specifications,such as the third edition of The Encyclopedia of China,The Mining Manualand The Code for the Construction of Green Mines in Non-ferrous Metals Industry (DZ/T0320-2018).

Mining Operation and Concentrator  of Tibet QulongCopper Complex Mine

The project design capacity is 150kt/d and the maximum elevation of the open pit is 5560m. It is currently the world outsize copper complex mine with the highest elevation.

Tibet Jiama Copper Complex Mine (Phase Ⅰ)

The project was put into production in July, 2010, with the capacity of 6000t/d. It is China first and world advanced, large environmental-friendly modernized mine in the plateau   above 5000m elevation, it is one of the Pilot Units of the National Environmental-friendly Mine. It’s a monumental work of China mining industry on Tibet Plateau.

Tibet Jiama Copper Complex Mine (Phase Ⅱ)

The project was put into operation in Aug., 2014, with the capacity of 40kt/d. The concentrator average elevation is 4600m. It is the China first ultra-large nonferrous metal concentrator built at one go.

Mongolia Turmutin-Ovoo Zinc Mine Project

It is located in high-elevation cold area in Mongolia with significant economic, environmental and social benefit. It’s a model of cooperation between China and Mongolia.

Tibet Zhibula CopperComplex Mine

The project was put into production in 2016, with the capacity of 4000t/d. The highest elevation of the open pit is 5500m and the concentrator elevation is 4400m. It is    China first high elevation open-pit mining operation which can be     converted to the underground mining operation in future. The ROM ore is conveyed by the 11.43km-long downward belt conveyer to the concentrator.

Chihong Huize Lead-Zinc Mine

China’s deepest shaft with the depth of 1526.5m has been designed and constructed here. The integrated technology of active pressure relief and flexible and rigid support for ultra-deep shaft wall lining is innovatively developed. CINF is the first in China to design the     ultra-deep combined shaft skip hoisting system with the hoisting technology of multiple-spot loading and unloading of multiple materials. The highest lifting speed (14m/s) of the rigid cage guide is created up to the international leading level. The mine is one of the pilot units of national environmental-friendly mines.

Xinjiang AsheleCopper Mine

The project is based on the main and auxiliary shaft development.    The main shaft lifting capacity is 10000 t/d, the ultra- deep (over 1000m) shaft was designed and built with the China fastest main shaft lifting speed of 16.5m/s, and the design has reached the international advanced level

Guangxi Tongkeng & Gaofeng Tin Complex Mine of Hua Xi Group

It is the largest tin complex mine in China. The mining process is based on the large-size underground trackless equipment, underground fire control and extinguishing facility. CINF has developed the separation technologies of" gravity separation -floation- gravity separation - floation-", table flotation and fine slime cassiterite flotation ，long-distance ropeway conveying and deep-shaft mining up to the     world advanced level. The project has obtained for three times in succession the second-class awards for Key Technology Achievement , National Technological Advancement and has obtained the  bronze medal  for National Excellent Engineering Survey and Design , various provincial and ministerial-level awards for Excellent Engineering Design and Technology Advancement.

Fankou Lead-ZincMine—the comprehensive water control technology of complex large-inflow Deposit

It is a concealed karst large-inflow mine with extremely-complex hydrogeology and the currently largest deep-shaft lead-zinc mine in China. The project is a model mine project of water control in China large-inflow mines. The technology of water control has come up to the world advanced level. The mine is one of the first international technology exchange windows，one of the national pilot units of environmental-friendly mines and the national mine parks

The Gold Mining and Mineral Processing Project of Hubei Sanxin Gold-Copper Co., Ltd. Jiguanzui-Taohuazui Gold Mine, under Hubei Sanxin Gold-Copper Co., Ltd., is a large skarn-type Au- Cu- S- Fe complex deposit distributed under Daye Lake. The design capacity is 1000kt/a. CINF has applied upright sand silo pneumatic and hydrodynamic combined high-concentration slurrying technology, high-concentration all-tailing cemented backfilling technology and surface and underground water control technology. Jiguanzui-Taohuazui Gold Mine is one of “the Pilot Units of National Environmental-friendly Mines. .

JinchuanLongshou Mine

Under the extreme geotechnical conditions of rock fracture , poor stability and high ground stress, China's first combined shaft(over 1000m) was built. The composite dynamic roadway lining technology, underhand-drift cemented filling mining technology and rod milled tailing and granulating slag cemented filling technology have reached  the international advanced level. Jinchuan longshou Mine is one of the “ Pilot Units of National Environmental-friendly Mines”. .

The Concentrator of Hunan Shizhuyuan Complex Mine

Hunan Shizhuyuan Complex Mine is reputed as "world nonferrous metal museum" by Chinese and foreign geologists. The new mineral processing technology of complex tungsten-molybdenum-bismuth was invented and named as "Shizhuyuan Method" to fill in the blank of the world up to the world advanced level .Various valuable elements are effectively recovered and utilized such as tungsten, molybdenum, bismuth and fluorite. Three complex ore concentrators and a fluorite recovery plant have been constructed up to now.

Pingguo Bauxite Mine

The technology of environmental-friendly development of oversize Karst accumulative bauxite mine has been successfully applied in Pingguo, Huayin and Xinfa Mines in Northwest Guangxi. These mines have all realized ramp-up and production up to the standard at one go with great economic and social profits and great contributions for economic development in Baise District.  Pingguo Bauxite Mine is one of the first “Demonstration Bases of Mineral Resource Comprehensive Utilization” in China, the “National Advanced Unit of Mineral Resource Comprehensive Utilization” rewarded by nine ministries and commissions under the State Council,  Pingguo Bauxite Mine is the “National Pilot Unit of Green Mine”, the “National Advanced Unit of Environmental Protection”, and a model of “resource-saving and environment-friendly mine” and a model of nonferrous mines.

Henan LuanchuanSandaozhuang Molybdenum Mine

The capacity is 50kt/d and it is the largest molybdenum mine in China. CINF is the pioneer to develop the world advanced technologies of large-size gob comprehensive disposal, comprehensive recovery of paragenetic and associated low-grade tungsten resource and tailings disposal. The mine is one of the first “Demonstration Bases of Mineral Resource Comprehensive Utilization”, it is approved as one of the “National Pilot Units of Environmental-friendly Mines”.