Concentrate on the construction of green mines and lead the paste filling industry - Feny Co., Ltd.

According to incomplete statistics, the annual tailings emissions of China's non-coal mines are as high as more than 1.5 billion tons; At present, more than 5 billion tons of coal gangue have been piled up in coal mines, and the accumulation is still growing at a rate of 200 million tons per year. On the one hand, a large number of tailings, coal gangue and other solid wastes are accumulated on the surface, occupying cultivated land, the leakage of heavy metal ions in the tailings causes environmental pollution on the surface and water bodies, and the debris flow caused by the dam failure of the tailings dam causes harm to the surrounding environment of the mining area, which not only seriously affects the production and life of the surrounding residents, but also brings potential safety hazards to the ecological environment of the region and the basin; On the other hand, underground mining produces goaf accidents such as roofing and water permeability, which seriously causes surface subsidence, destroys buildings, roads and water bodies, and the security pillars and security pillars left in the process of coal mine and metal ore mining cannot be mined in time, resulting in a serious waste of non-renewable resources.

In response to the above-mentioned hazards, the state has issued relevant policies. Among them, the "National Safety Production Science and Technology Development Plan" clearly points out that tailings ponds and goafs are the two major hidden dangers in the safety production of non-coal mines; The "Guiding Opinions on Further Strengthening the Supervision and Management of Tailings Ponds" further stipulates that new metal and non-metal underground mines must demonstrate whether the backfill mining method can be used and give priority to the implementation of the backfill mining method; The work plan for preventing and resolving the safety risks of tailings ponds clearly states that the number of tailings ponds in the country will only decrease in principle, and no new "overhead ponds" will be generated.

Based on the requirements of national policies and regulations and the development needs of enterprises, the backfill mining method is widely used in underground mining in non-coal mines, and is gradually popularized in coal mines. However, the traditional filling method has the shortcomings of low filling concentration, large conveying flow rate, easy segregation of slurry, long consolidation time, etc., and there are problems such as frequent pipe blocking accidents, easy wear of filling pipes, difficult dehydration of filling body, low strength and high cost in the operation of the filling system.

Therefore, there is an urgent need for a safe, efficient and environmentally friendly waste disposal technology, and paste filling technology has come to the fore and gradually become a hot technology in the global mining industry, as well as an important method and means for green mine construction.

Paste filling technology: efficient, environmentally friendly, safe and economical

The paste filling technology uses the tailings, coal gangue and other solid wastes produced by mining to form a high-density non-Newtonian fluid with fly ash and cementing agent, and is pressurized and transported to the underground goaf through the filling pump, and finally realizes "one waste treatment and multiple hazards (environmental pollution hazards, cultivated land occupation hazards, tailings dam failure hazards, goaf roofing hazards, surface collapse hazards, pillar resource waste hazards, etc.)".

The paste has the characteristics of "two highs" and "three nos". The "two highs" are high concentration and high yield stress; The "three noes" are no dehydration, no stratification, and no segregation. Through a large number of practices, it has been proved that whether it is a non-coal mine or a coal mine, after adopting paste filling technology, it has achieved three harvests of environmental protection, safety and economic benefits.

In terms of environmental protection, it can avoid tailings and coal gangue occupying a large amount of cultivated land, consolidate and seal heavy metal ions in time, and avoid polluting the surface and underground water bodies.

In terms of safety, because coal gangue, tailings and other wastes are filled into the underground, there is no need for permanent slag yards or tailings ponds, avoiding accidents such as landslides and dam failures; At the same time, the backfill body controls the stability of the surrounding rock in the underground goaf in time, which can avoid the collapse of houses and road damage caused by surface collapse, realize the effective management of the goaf, and prevent the occurrence of underground roof accidents.

In terms of economy, after the backfill body supports the goaf in time, the security pillar has the mining conditions, which greatly improves the mining recovery rate, prolongs the service life of the mine, and avoids the waste of mineral resources.

High-end technology and equipment support the complete industrial chain of the industry

Feny Co., Ltd. (hereinafter referred to as "Feny Co., Ltd.") is a key high-tech enterprise of the National Torch Plan led by the R&D, production, sales and service of "safe, environmentally friendly, economical and efficient" paste filling mining technology and complete sets of equipment and filling cementitious materials. The company integrates the whole filling industry chain services such as paste filling system and complete sets of equipment, filling cementitious materials, filling operation management, etc., and is committed to becoming a leading enterprise in the domestic green mine filling industry, and has participated in the formulation of national standards such as "Technical Specifications for Full Tailings Paste Filling" and "Technical Specifications for Preparation and Storage of Full Tailings Paste Body".

In the process of nearly 20 years of painstaking research and development of paste filling technology and complete sets of equipment, the company has achieved two major breakthroughs - deep cone thickening technology and paste pumping technology, and successfully solved two major technical problems in the field of paste filling - the problem of efficient dehydration and concentration of ultra-fine tailings and the problem of long-distance pipeline transportation with high resistance. It has achieved a qualitative leap in the research and development of high-performance filling equipment, broken the long-term dependence of China's filling equipment on foreign imports, and gradually formed a paste filling technology and complete sets of environmental protection equipment with "deep cone thickening system, stirring preparation system, pumping system, pipeline transportation system, and central integrated control system" as the core, realizing the scientific integration and seamless connection of complete sets of paste filling system equipment. The core components such as deep cone paste thickener, filling industrial pump, high-concentration slurry mixing equipment, pipeline control valve group and other core components developed by Feny Co., Ltd. have reached the "international leading" level. At the same time, the company has also achieved fruitful results in the research and development of new cementitious materials and filling operation services, and has truly realized the whole industry chain service in the field of paste filling bodies.

Up to now, the technology developed by Feny Co., Ltd. has been successfully applied in more than 200 domestic metal mines, chemical mines and coal mining enterprises under different geological conditions, such as Hunan Gold, China Gold, China Nonferrous Metals Mining, Zhongjin Lingnan, China Railway Resources, Jinchuan Group, Western Mining, Shandong Gold, Minmetals Group, Tongling Nonferrous Metals, Kaifeng Group, Jizhong Energy Fengfeng Group, Coking Coal Group, Kailuan Group, Jinniu Coal Mine, Jinqiu Coal Mine, Zisheng Coal Mine, etc., and actively participated in the "Belt and Road" going out strategy in the Democratic Republic of the Congo (DRC) and TajikistanMore than a dozen mining enterprises in Mongolia, Laos and other countries have successfully built paste filling systems and won unanimous praise from users.

The practice of a large number of successful cases shows that the full tailings plaster filling technology and complete sets of equipment provided by Feny have reached the leading level in China. The filling technology and equipment have all been localized, which has reduced the dependence of key equipment on foreign technology in the past, enhanced the system coordination, and significantly reduced the investment and operation and maintenance costs of enterprise facilities and equipment, making outstanding contributions to the construction of green mines.

Under the rolling green hills, there are endless treasures. The earth has endowed mankind with great material wealth, but conventional mining has brought about devastation: ecological destruction, environmental pollution, waste of resources, geological disasters, and frequent accidents......

To adhere to the harmonious coexistence of man and nature, we must establish and practice the concept of "lucid waters and lush mountains are invaluable assets", and adhere to the basic national policy of saving resources and protecting the environment.

Under the guidance of the major policies of the party and the state, after more than ten years of ups and downs, Feny has always adhered to the corporate tenet of "serving the country by industry, sharing and win-win", and Feny people have always adhered to the corporate mission of "'green, environmental protection, safety and efficiency' pioneer in green ecological mine construction", and constantly deepened the field of green mine filling and mining, and strived to interpret the enterprise spirit of "gratitude, integrity, responsibility and innovation" with unique wisdom.

On the road of innovation and development with science and technology as the core, Feny people rely on high-tech, talents and knowledge as the link, take the market and efficiency as the goal, and take advanced and reliable products and high-quality honest service as the guide, leading and promoting the development of new green mine technology and complete sets of equipment, based on the whole country and facing the world, casting a leading brand in the field of green mine filling and mining in China, and winning wide recognition from domestic and international counterparts. The industrious wingers will never be satisfied with the status quo. In order to "create an industry pioneer and create an international brand", Feny people dare not slack off. Feny people are willing to work with you to build a beautiful new era of green ecology. Create a green mine and work together for a win-win future!

——飞翼股份董事长 张泽武