Diving into the construction of environmentally friendly mines and leading the granulate filling industry, Feiye Co., Ltd. implements the path of comprehensive service of the entire production chain in green mining

According to incomplete data, the annual volume of tail emissions in China's non-naked mines exceeds 1.5 billion tons. At present, the total amount of coal slag scrap is more than 5 billion tons, and the volume of scrap continues to grow at a rate of 200 million tons per year. This creates significant safety risks: on the one hand, large amounts of solid waste, such as tails and coal slag, accumulate on the surface of the earth, occupying arable land, leading to soil and water pollution due to the release of heavy metals. On the other hand, the destruction of mine debris dams causes the formation of mud streams that damage the environment around the fields, which seriously affects the daily life and production of the surrounding residents, and also poses a danger to the ecological environment of the region and the river basin. In addition, underground mining forms quarries that can lead to accidents such as mining collapse and water leakage, which greatly contributes to surface precipitation, the destruction of buildings, roads and reservoirs. At the same time, the remaining coal and metal columns (the “safe” columns) cannot be removed in time, leading to a serious loss of non-renewable resources. In response to the above-mentioned threats, the State has taken appropriate measures. In particular, the “Planning for the Development of Science and Technology in Production Safety” clearly states that tailings and quarries are the two main risks to production safety in non-ore mining enterprises. The “Guidelines on the Further Strengthening of Supervision and Management of Tail Deposits” additionally stipulates that when constructing new underground mines of metals and non-metals, it is necessary to analyze the possibility of applying the method of filling the production and give preference to this method. The “ InThe Tail Storage Safety Risk Prevention and Reduction Program explicitly states that the number of tail stores in the country should in principle be reduced, not increased, and that new “top stores” should no longer appear. In accordance with the requirements of state policies and regulations, as well as taking into account the needs of the enterprise's own development, the filling method in production is widely used in underground mining in non-ore mining mines, and also gradually spread in coal mines. However, the traditional filling method has a number of drawbacks: low filler concentration, high transport speed, the tendency of the suspension to stratification, long curing time. During the operation of the filling system, accidents often occur due to pipe clogging, pipeline wear is easy, the difficulty of dehydrating the filling material, low strength and high costs. Thus, a safe, efficient and environmentally friendly waste management technology was urgently needed, and paste filling technology immediately stood out, gradually becoming a hot topic in the global mining business, as well as an important method and tool for building environmentally friendly mines. Paste Filling Technology: Highly efficient, environmentally friendly, safe and economical Paste Filling Technology uses solid waste such as tail-forming slag and coal glinobite, combined with ash and binders to create a high-density non-stationary liquid. Then this liquid under pressure through pumps enters the underground quarries, which allows to eliminate "one waste - many harms" (damage to the environment, damage to occupied agricultural land, damage from the destruction of mine deposits, damage from the collapse of quarries, damage from sedimentation of the surface,loss of mineral resources, etc. ). Pasta has the characteristics of "two high" and "three no". "Two high" is a high concentration and a high limit of liquidity; The “three no’s” are the lack of dehydration, stratification and separation. Numerous practical examples have shown that the application of paste filling technology achieves triple benefits: environmental safety, production safety and economic efficiency, regardless of whether the field is a coal mine or not. In the field of ecology, it allows to avoid the occupation of large areas of agricultural land with tail debris and coal slag, timely fix and seal heavy metal ions, preventing contamination of the surface of the earth and groundwater. In terms of safety, since waste such as coal slag and tail stores fill the mine, there is no need to create permanent landfills or tail stores, which excludes accidents related to landslides and dam destruction. In addition, the filler timely monitors rock stability around mine empty areas, preventing ground surface collapse that can lead to building demolition and road damage, ensuring efficient management of empty areas, and preventing accidents related to projections and collapse of mine walls. In economic terms, after the timely strengthening of empty areas by filling, the pillars of the mine acquired conditions for extraction, significantly increased the coefficients of extraction and recovery of resources, extended the life of the mine and avoided harm to natural resources.

High-tech equipment provides the complete industrial chain

The company "Fei Jiujiu" (hereinafter referred to as "Fei Jiujiu") is a key high-tech enterprise,funded under the national Torch program, specializing in the development, manufacture, sale and service of technologies and equipment for safe, environmentally friendly, economical and highly efficient rock filling by granular filling method, as well as in the production of cement filling materials. The company combines a full range of rock filling services: systems and accessories for granular filling, filling cement materials, management and operation of filling systems, striving to become a leader in China's green mining industry. It has participated in the development of national standards such as “Technical Standards for Granular Filling of Mine Tails” and “Technical Standards for Preparation and Storage of Granular Fillers from Mine Tails”. Over the past twenty years, dedicated to the development of paste filling technology and comprehensive equipment, the company has made two significant breakthroughs – deep cone and high-density suspension technologies. and also successfully solved two key technical problems in the field of paste filling: efficient dehydration and concentration of ultra-thin tails and the problem of transporting long pipelines with high resistance. In the development of high-performance comprehensive filling equipment, a qualitative leap has been achieved, which has made it possible to overcome the long-term dependence of Chinese equipment on imports from abroad, and gradually form a comprehensive environmentally friendly paste filling system based on the "deep cone and high density system, mixing and preparation system, pumping system, pipeline conveying system and central integrated control system", ensuring scientific integration and seamless connection of complete paste filling equipment.

Key components,developed by Feiyi company, such as deep cone paste concentration machine, industrial filling pumps, high-concentration suspension mixing equipment, pipeline control valve groups, have reached the level of "international leadership". In addition, the company has made significant progress in the research of new flexible materials and the provision of filling operation services, implementing a full service cycle in the field of paste filling. At present, the technology developed by Feiyi has been successfully applied in more than 200 metallurgical, chemical and coal enterprises across China with various geological conditions, including Hunan Gold, China Gold, Zhongse Mining, Zhongjin Lingnan, China Railway Resources, Jinchuan Group, Western Mining, Shandong Gold, Wumine Group, Tongling Nonferrous Metals, Kaifeng Phosphorus Group, Jizhong Energy Fengfeng Group, Coking Coal Group, Kaipu Group, Jin Niu Coal Mine, Jin Qiu Coal Mine, Zisheng Coal Mine and others. The company actively participates in the strategy of entering the international market “One Belt, One Road” and has successfully implemented rock filling systems in dozens of mining enterprises in such countries as Congo (Dzabarjin), Tajikistan, Mongolia and Laos, receiving unanimous approval from users. Numerous successful examples show that the thick suspension filling technology and complete equipment offered by Feiyi has reached the leading level in the country. All filling technology and equipment are fully developed on domestic base materials, which has reduced the dependence on foreign technology in key equipment, improved system consistency, and significantly reduced the investment and operation costs of enterprises. contributes significantly to the creation of environmentally friendly mining enterprises.

Under the endless green mountains are hidden endless treasures. The earth gives humanity enormous material wealth, but ordinary mining brings only destruction: the destruction of the ecosystem, environmental pollution, waste of resources, geological disasters, frequent accidents. To achieve the harmonious coexistence of man and nature, it is necessary to instill and apply the concept of "green mountains and clean waters are golden and silver mountains", as well as adhere to the basic state policy of resource conservation and environmental protection. Under the guidance of the important political and state directions of the Party and the state, through more than a decade of difficulties and trials, Feiyi Company has consistently adhered to the corporate mission of "serving the country through industry, sharing successes and achieving win-win cooperation". Feiyi employees constantly follow the corporate mission of “leading the construction of green mining enterprises with the principles of “green, green, safe, efficient”, actively developing the field of green mining using filling of quarries. Through their unique intelligence and wisdom, they strive to embody the corporate spirit of gratitude, honesty, responsibility and innovation.

On the path of technology-oriented innovation development, Feiyi team relies on high technology, ties itself to talents and knowledge, sets itself market and efficiency goals, and strives to create advanced and reliable products and quality, honest service. We lead and promote the development of new technologies and comprehensive equipment for environmentally friendly mines, operating at the national and international levels, forming a leading brand in the field of filler extraction in China and winning wide recognition among domestic and foreign colleagues.Feiyi’s hard-working employees will never be satisfied with the current situation. In the pursuit of becoming “industry leaders and creating an international brand”, we will not relax in any case. Feiyi team is ready to work with you to build a beautiful new era of green ecology. Create green mines together, unite and achieve common success in the future!

— Zhang Zhou, Chairman of the Board of Feny