Hubei Saning Mining to create a “green shared” phosphate mine demonstration zone

Let the mine plug in the wings of wisdom

- Hubei Three Ning mining demonstration area to create a "green share" of phosphorus ore documentary

Nowadays, the application of automation, information technology and digital technology has made the mine better.

When the reporter walked into Saning Mining Co., Ltd. (hereinafter referred to as “Sanning Mining”) in Yichang, Hubei Province, in the spacious and bright intelligent dispatching center, mining, ore dressing production control, underground filling and safety and environmental monitoring, production process monitoring , communications systems integration and other on-site technical indicators, high-definition LED display, at a glance.

“You see! Through the use of advanced integrated control technology, all mine activities can be implemented remotely in the ground intelligent dispatch center.” Li Yong, deputy general manager of safety production in Saning Mining, said with pride.

It is reported that the company's Zhishuihe Phosphorus Mine has built the first green smart mine in Hubei Province. However, this is only a key step for Saning Mining to focus on building a “green shared” phosphate mine demonstration zone. In recent years, Saning Mining has taken advantage of its deephold in the hinterland of the second largest phosphate rock in Asia, boldly explored and bravely practiced, and summarized and improved a set of phosphorus chemical resources mining, mineral processing, deep processing integration, mining area environmental management and mining and land relations. A new mode of green mining and comprehensive utilization of harmonious phosphate resources, the development of green and intelligent mines is normalized, scientific and standardized, and has played a leading role in demonstration.

Accurate grading, comprehensive utilization

Make resource utilization efficiency significantly improved

The development of phosphate fertilizer manufacturing in China is subject to phosphate rock resources, which are strategic resources of China.

However, the reality that has to be faced is that, for many years, China's mining enterprises have been plagued by problems such as phosphate rock classification, comprehensive utilization of abandoned phosphate rock resources and tailings discharge, especially the traditional room and pillar method mining, and huge gobs after mining. There are safety hazards such as mine shock, impact pressure, water inrush, rock burst and surface subsidence, which pose a huge threat to the safe production of mines, and their treatment costs are huge. In addition, solid waste and tailings ponds are also major sources of danger, and if they fail, they will cause huge disasters.

Aerial view of the main industrial area

Faced with various challenges, Saning Mining has focused on improving the efficiency of resource utilization. By optimizing the process, a “closed loop, no waste discharge” beneficiation plant was built in the mining area. The reporter followed the deputy general manager Li Yong and came to the concentrator. The glimpse was a rolling conveyor belt that traversed the east and west, covered with phosphorous ore, which is rich in luster and of different sizes.

“Low-grade phosphate rock is classified here. After classification, high-purity concentrate is transported to the chemical plant for direct extraction of high-concentration phosphoric acid fertilizer. The resulting solid waste (large particles) is then processed and transported to the mine through long-distance pipelines. The empty area is filled.” Li Yong explained that Sanning Mining uses the ecological mining mode of tailings cement filling to replace the ore body by cementing, so that the ore does not fall, the waste rock does not come out, and the tailings return to the goaf. No solid waste discharge target.

How to greatly improve the recycling rate of resources to achieve accurate grading, Saning Mining also has its own tricks. According to reports, Yichang phosphate mine belongs to refractory ore. Phosphorite strips are mainly denser than 2.95g/cm3, dolomite strip density is about 2.85g/cm3, and 0.1g/cm3 sorting density difference is heavy medium. The minimum requirement for ore dressing is to separate the phosphate rock and dolomite at this density difference. Sanning Mining took the lead in adopting large-scale heavy medium cyclone and density control system to achieve accurate sorting of refractory phosphate rock under micro-difference, so that the phosphate ore P2O5 grade is in the 12%~20% range with low industrial value. The grade ore was selected, and the refined grade P2O5 obtained after efficient and precise grading was more than 28%. This so-called "fine gravity differential medium precision grading technology" has greatly improved the industrial utilization rate of low-grade phosphate rock, and the comprehensive recovery rate is over 80%.

It is worth mentioning that they have developed a large-scale technology of phosphate rock heavy medium cyclone developed by joint research and development, which effectively avoids the occurrence of blockage and blockage of the block, resulting in less secondary slime, which is beneficial to Improve the stability of the medium suspension and the processing capacity of the magnetic separator to reduce the occurrence of accidents...

This new low-cost, harmless, green production and green mining process for the reuse of waste phosphorus resources has realized the treatment and comprehensive utilization of phosphorus chemical waste from the source. A set of data shows that the high-efficiency low-grade phosphate rock precision grading and the comprehensive utilization technology of waste phosphate rock resources have increased the resource utilization rate from about 57% of the traditional mining process to over 89%, realizing the reuse of solid waste and improving it. The ability to ensure the safe production of mines.

"This technology has an important demonstration role for the scientific development and utilization of phosphate resources in China, and has made tremendous contributions to the sustainable use of phosphorus resources in China," said Wang Xueliang, general manager. According to preliminary estimates, only one of Hubei Province can use more than 1.8 billion tons of resources.

Mechanical reduction, intelligent substitution

High-tech helps smart mine construction

As with the comprehensive utilization efficiency of heavy resources, the construction and development of smart mines is inseparable from the strong support of science and technology.

In order to realize the fundamental transformation of traditional mines to modern intelligent mines and achieve the strategic goal of sustainable development, in recent years, Saning Mining relies on scientific and technological progress, adheres to innovation drive, and has made great efforts in the construction of smart mines, and has conducted in-depth research and achieved A number of technological innovations.

First, the research is in accordance with the mining technology of the Pickuhe Phosphate Mine. According to the characteristics of the thin water, deep burial depth, large mining area and gentle dip angle of the Jiaoshui River Phosphorus Mine, a safe mining process has been studied, which greatly improves the resource utilization. Secondly, the total length of the closed wire of the Jiaoshui River phosphate mine is 16.74 kilometers, the penetration error is only 19 centimeters, and the error rate is one hundred and ten thousand points. The precision is achieved, and the penetration measurement accuracy reaches the advanced level of the domestic mining industry. Control engineering measurement error loss to zero. The third is to explore the low-cost construction technology of the large-section slide large chamber. The 1018 wind shaft of the Jiaoshuihe Phosphate Mine has a total length of 227 meters, a cross-sectional area of ​​17.25 square meters, a vertical height difference of 150 meters, and an average slope of 47 degrees. The construction task has been successfully completed in only 80 days, greatly reducing construction costs and saving engineering investment. 2.9 million yuan. The fourth is a well-forming technology for large-section deep-slip wells. The large-section deep-slip well construction technology studied by the Engineering Technology Research Center has safely and effectively completed the construction of a shaft with a height of 43 meters and a cross-sectional area of ​​36.16 square meters, from drilling, charging blasting, ventilation to rock loading, personnel No downhole, ensuring construction safety and saving more than 1.5 million yuan.

“In addition to the breakthrough of traditional mining technology, we also innovatively use the mine VR (virtual reality) intelligent control platform.” Li Yong told the China Mining News reporter that this platform can visually display the entire production process, integrate production control, Communication integration, security monitoring and monitoring functions, intelligent management and control achieved unattended, reducing job settings.

Advanced technology joint control means also make mechanization and intelligent continuous mining become a reality. Up to now, Saning Mining has invested more than 49 million yuan to select more than 50 sets of advanced mechanical equipments at home and abroad with high energy conservation, environmental protection and high automation level. The main mining face of the underground has been fully equipped with full hydraulic drilling rigs. , bolting trolley follow-up support, work surface bristles, using high-efficiency large equipment shipment; to ensure the filling effect, the company broke the routine and purchased two sets of the world's most advanced filling pump equipment, total amount 900 million. The large-scale use of these advanced equipment not only improves the efficiency of production and mining, but also greatly reduces the production management personnel, and achieves the essential green selection and filling.

Nowadays, the mine has basically achieved the goal of intelligent mine construction with “mechanized reduction and intelligent substitution”.

Open source and throttling

Characteristic wisdom mine has begun to take shape

Green mining of resources, deep processing of downstream products, green treatment of waste resources and comprehensive utilization have become the development trend, consensus and goal of the world phosphorus chemical industry.

At the same time, the technological innovation of mining enterprises and the cooperation of production, education and research technology have increasingly become a distinctive feature of the mining industry.

“In order to carry out higher level technological innovation and further lead and promote the development of green manufacturing industry in the phosphorus chemical industry, our Saning Mining has established a complete set of production, study and research system.” General Manager Wang Xueliang proudly introduced to the China Mining News reporter.

Through the combination of efficient mining technology and management methods and filling mining, Saning has established long-term cooperation mechanisms with national key universities such as China University of Geosciences (Wuhan) and Central South University, and is also a well-known domestic mining engineering expert and academician of the Chinese Academy of Engineering. Desheng cooperated to establish a workstation for the academicians of Saning Mining, and defined the goal of building a smart mine, to achieve intelligent production and control, and to provide a strong basic theoretical and intellectual support for design and scientific research.

The reporter noticed that the office of the general manager is the “Academician Workstation”, and the corporate leaders attach great importance to scientific and technological talents.

It is understood that at present, Saning Mining has also carried out comprehensive renovation and upgrading of equipment and facilities with a number of advanced mining research equipment professional manufacturers and manufacturers at home and abroad to improve the adaptability of intelligent machinery and equipment; continue to carry out research on energy saving and consumption reduction. Technical research. This not only improves efficiency, but also compresses personnel on a large scale and achieves intrinsic safety. Improvement mine air compressor, make full use of the remaining heat burning domestic hot water, shaking the device change stiff spring shock vibration damping rubber, cast iron liner crushing system change noise reduction as a polyurethane liner to maximize Realize ecological and green mining; all electrical equipments are selected for energy-efficient first-class motors, all underground lighting is illuminated by LED lights, and only one year of lighting costs are reduced by more than one million yuan; intelligent control is implemented for main fans to achieve on-demand The wind has greatly reduced energy consumption.

The high-level scientific and technological platform built by Saning Mining with enterprises as the main body and the integration of production, education and research in universities and research institutes not only enhances technological innovation ability and product quality, but also enhances economic and social benefits. The formation of smart mine technology with characteristics of phosphate rock resources, promote the transformation of mining and green production of factories, and lead the green and healthy development of phosphate fertilizer manufacturing in the phosphorus chemical industry.

Fulfilling responsibilities and benefiting the people

a harmonious and stable banner

After the empty mountain rain, the weather is not yet autumn.

The light rain in June was underground all night, and the moist air was filled with fresh flavors everywhere.

In the distance, the blue sky of the blue sky, a cloud of haze. Looking up at the peaks, I saw the green mountains, the trees and the vast blue sky, and the clouds of the hustle and bustle formed an elegant and interesting landscape painting. Facing the first sunshine in the morning, the green mountains and mountains are full of vitality and vitality.

"Developing one resource and benefiting one party" is the proper meaning of building a green mine. Saning Mining regards the construction of a harmonious mining area and the construction of a good mine relationship as the main content of the green mine. It promotes “green mining” and “green mine” as the company's action plan and development goals, and strives to practice it in production and construction.

In recent years, Saning Mining has actively fulfilled its social responsibilities and fully promoted the work of “energy use, pollution reduction and restoration of ecology”. It has invested more than 15 million yuan to carry out work environment transformation such as dust reduction and noise reduction, and entrusted Yichang Hydrogeology Brigade. The unit conducted on-the-spot investigation, compiled an emergency investigation report, and set up a leading group for disaster prevention and control with the general manager as the leader. It has invested more than 6 million yuan to treat dangerous rocks in the vicinity of the mining area.

Once upon a time, "the sky was gray, the rain was all the way to the mud, the distance was like a fog, and it was close to the body." Nowadays, when the reporter walks in the Saning mining area, this modern mine is actually "the quarry does not see the stone, the broken dust."

"We must Jinshan Silver Hill, but also Guanghui." Saning Mining actively responded to the national “Thirteenth Five-Year Plan”, focusing on the development of “green mining” and the construction of “green mines”, and intensified the improvement of the mine ecological environment. It has completed the transformation of Wenwang Road and the company's park section and built a road tunnel 580. Rice, completed the river channel reconstruction project of the park 820 meters, invested more than 12 million yuan to carry out the landscape construction of the park. According to the national AAA industrial tourism demonstration site standard, Saning is committed to planning and constructing a modern park-type mining area to protect the mining area and surrounding ecological environment.

After continuous efforts in recent years, Saning Mining has realized the coordinated development of circular economy sustainable and environmental protection with high efficiency, intelligent mining, selection and integration, and strengthened the harmonious relationship with surrounding residents, effectively promoting the stability of mining areas and communities. Harmony has created a green development model for phosphate rock.

The green wisdom mine represented by Saning Mining has broad prospects for industrial development. We believe that with the continuous improvement of relevant policies and measures and the establishment of institutional mechanisms, responsible mining enterprises such as Saning Mining will strive for greater development in the construction of green and smart mines.

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