Climb to "high" and "green" - the development of Southern New Material Technology Co., Ltd

◎ Reporter Zhang Jiyong

When the grass grows and the warbler flies, the reporter walked into the Hujiawan mining area of Nanfang New Material Technology Co., Ltd. (hereinafter referred to as "Nanfang New Materials") located in Linli County, Hunan Province. As soon as I entered the mining area, a picture of harmonious coexistence between man and nature came into view......

When the reporter was still amazed by the prospects, Wang Jie, executive deputy general manager of Southern New Materials, told reporters: "What you see is only the external scene, our real core technology is deep processing and intelligent mining technology, which can not only produce building stone, but also produce nano calcium, high calcium stone and other products for the chemical industry, as long as the market needs a reasonable price, we can provide sufficient supply to the market." ”

If you have resources, you must make good use of them

More than 400 kilometers of Lishui water stretches across the county, leaving a perfect curve and flowing into Dongting Lake, providing a steady stream of water for the local ecological environment. In addition to having a beautiful natural environment, the county is rich in mineral resources, as early as the Ming and Qing dynasties, there is a history of quarrying and burning ash, many years of "opening the mountain to chisel and sell rocks" has injected vitality into the local economy, but it has also made the mountain full of holes, and the ecology has been destroyed.

Since the 18th National Congress of the Communist Party of China, in order to protect the good ecological environment, the local government departments have closely focused on the decision-making and deployment of the Hunan Provincial Party Committee and the Provincial Government, insisted on the protection, optimal allocation and intensive utilization of mineral resources, comprehensively promoted the construction of green mines and the ecological restoration of mines, and ran the concept of ecological protection through the whole process of mining, processing and utilization of mineral resources.

In 2018, it integrated 10 local mining enterprises and 8 limestone companies, and in 2019, it successfully obtained the first large-scale sand and gravel mine mining right in Hunan Province with 490 million yuan, with an additional resource of 167 million tons, becoming the first super-large building materials mine production base in Hunan.

If you have resources, you must make good use of them. Nanfang New Materials has always adhered to the concept of "making good use of resources and serving construction" of China National Building Materials, created a new model of "mine +", developed green, intelligent, intensive and high-end parks, and took the road of high-quality green development with harmonious resources, ecology, economy and social benefits.

With resources, it is even more important to make full use of them. For how to maximize the comprehensive utilization and conservation of intensive resources, and to eat and squeeze resources, Southern New Materials has made useful explorations. The company, together with the Chinese Academy of Sciences, Central South University and other units, has established an information management and control center to realize informatization, visualization and intelligent management and control of resource exploitation, and ensure the "granular return of resources". At the same time, we will continue to accelerate the development of new quality productivity, solidly promote high-quality development, implement the strategy of intensive processing, optimize and extend the industrial chain, and build a new pillar of the mining industry system. They build a chain, supplement the chain and extend the chain around a "stone", and transform and upgrade from a simple aggregate production enterprise to the whole industrial chain of aggregate, cement, commercial mix, nano calcium and high-calcium stone, so as to improve the "gold content" of the mine. The industry has expanded from primary building materials to daily chemicals and chemical additives, accelerating the pace of moving from "traditional processing industry" to "high-end manufacturing industry", and the mining output value has achieved a new leap.

While increasing investment in the research and development of calcium-based materials, Nanfang New Materials has developed the reuse value of mine waste, and has jointly established a green mine and comprehensive utilization of resources research institute and graduate joint training base with a number of units, and has developed new materials such as nano calcium carbonate, highly active calcium oxide and ultrafine calcium hydroxide using calcium-containing minerals or solid waste as raw materials, using green and clean technology to produce nano calcium carbonate, highly active calcium oxide and ultra-fine calcium hydroxide, which greatly enhances the added value of products while eating and squeezing resources.

In addition, through the analysis of the mineral components of the waste, Nanfang New Materials found that the waste is mostly clay minerals, and according to its mineral characteristics, the process flow test can be carried out jointly, and the waste can be processed into wall materials without autoclaving and curing, which not only practices the concept of comprehensive utilization of resources, but also reduces the safety risk of the dump.

It's best to use it

There is such a clause in the assessment of green mines, that is, "scientific mining methods". How? Southern New Materials has its own thinking.

When the reporter asked what are the outstanding achievements of the mine in intelligent construction, Wang Jie replied without thinking: "High-tech equipment does not represent the most practical technology, when we build intelligent mines, the standard we follow is that the first must be practical, and the second must be scientific." "How do you understand these two criteria?" The technical equipment that can be used and inseparable is the best." In the development, the company proposes to combine intelligent mines with green mines according to local conditions according to the mining environment, invests more than 2,000 yuan, and forms a 1+8 system integration through the mine big data center, so as to realize the mining scenarios of digital mining of mineral resources, intelligent mining equipment, remote control of production process, information transmission network and operation informatization.

At the scene, the reporter saw that the company's mine truck is methodically shuttling between the mining area and the crushing workshop, and there is no exhaust emission at all when going uphill, which is due to the company's use of potential power generation mining trucks, through the principle of downhill power generation braking, storing electric energy for full load drive, while improving the operation efficiency of mine trucks, it also reduces energy consumption and tail emissions, and realizes the cost reduction and efficiency increase of open-pit mining and transportation production links.

In terms of informatization, the company uses a new generation of mobile communication technology to deeply explore the possibility of 5G and smart mine integration and application fields, and realizes vehicle personnel positioning, operation information collection, automatic control of mechanical devices, assisted by intelligent identification and other technologies. At present, the company only needs 5 people to ensure the normal operation of the mining area and workshop, and the mining business has truly realized intelligent automatic management.

Let the green stay forever

In accordance with the principle of mining and regreening, Nanfang New Materials has implemented comprehensive, near-natural and high-standard restoration of the mine, realizing that there is fragrant grass within 10 steps and birdsong within 100 steps.

Walking into the mining area, it is like being in an ecological park, on the stone wall after mining, the shrubs grow luxuriantly, and the birds pass back and forth in the treetops...... "We have spent a lot of effort planting flowers and grass on the mountain, and we need to change the traditional thinking and turn the decay into magic." Wang Jie introduced.

In order to solve the problem of ecological restoration, the company has cooperated with Hunan University, Anhui University of Science and Technology and other units to carry out scientific and technological research, and pioneered the development of soil stripping, slope cutting, soil improvement and other technologies. In 2019, in accordance with the principle of "stable slope, three-dimensional vegetation matching, evergreen in all seasons, and beautiful landscape", the company carried out the "trilogy" ecological restoration of soil matrix reconstruction, vegetation restoration, and supporting projects on steep slope rocks.

Up to now, the company has invested more than 2,000 yuan, with a total restoration area of 125,000 square meters, with a repair rate of 100%, and has been highly affirmed by the expert group of the Chinese Academy of Sciences.

"In the next step, our company will continue to adhere to the concept of green development, in accordance with the development strategy of Hunan to build 'three highs and four new', continue to move towards high, build a high-tech industrial chain, and go green, not only to re-green, but also to make green forever, a high starting point, high standards, high level of permanent development of green mining, to create a new benchmark in the industry." Wang Jie said with confidence.