New Materials - FENY Co., Ltd. _ Provider of Comprehensive Paste Filling Solutions _ Core Equipment Manufacturer for Mine Filling _ Advanced Enterprise in Green Mine Filling

Material

Material

New Materials Center Description

The New Materials Center was established in January 2021 and is a key component of Flywing’s integrated deployment in the mining industry, specializing in the development of environmentally friendly binders for mining. The center seeks to solve customer problems such as high cost of laying and low strength of laying masses, thanks to innovation. Various environmentally friendly binders for mountain lining have already been developed, and it is also possible to customize the binders individually to meet specific tasks according to customer needs and available waste. This effectively solves problems such as low early tail strength, large volumes of binders for coal lining and high lining costs. The company has advanced paste lining research laboratory, using professional equipment and scientific methods to conduct a wide range of research in this field. Experiments include physicochemical property analysis, flocculation and sedimentation tests, mixing tests, ring tube tests, and semi-mountain field tests, providing a solid foundation for the design, construction, and operation of paste lining systems.

New Materials Center Description

Soil Stabilization Admixture

Soil Stabilization Admixture

The Soil Stabilization Admixture is an innovative Cementation material designed to solidify tailings, clay, silt, dust, and sludge containing fine and ultra fine particles. Classified as a highly efficient, environmentally friendly green material, it is made from various natural and synthetic inorganic mineral raw materials, processed through physical and chemical activation. Its chemical composition is similar to soil, appearing as a grayish-white, non-toxic, odorless inorganic non-metallic powder with good environmental friendliness. In a moisture-proof environment below 75°C, it has a shelf life of up to 12 months. This admixture embodies the development concept of efficiently resourceizing industrial solid waste, achieving an "treating waste with waste" environmental goal through high-efficiency physical and chemical activation of synthetic inorganic mineral raw materials.

Slag-Based Cementitious Material

Slag-Based Cementitious Material

This slag-based new material uses granulated blast furnace slag as the main raw material, supplemented with gypsum and lime or cement clinker as activators. It aims to overcome issues such as insufficient cement strength, high cement usage, and excessive hydration heat. This material is particularly suited for environments using full tailings or ultra-fine full tailings as backfill aggregate. During hydration, gypsum acts as a sulfate activator, while clinker or lime serves as an alkaline activator to promote slag hydration. This process primarily generates hydrated calcium sulfoaluminate (i.e., ettringite) and low-alkaline hydrated calcium silicate (C-S-H) gels, effectively enhancing the material's performance.

Coal-Based Cementitious Material

Coal-Based Cementitious Material

The new solid coal waste material is an innovative product developed for regions with abundant coal reserves in northern China. Its goal is to solve the problems of handling and recycling solid waste arising from the extraction and use of coal, which has long remained one of the main environmental protection problems in mining areas. This material is produced by adapting to local conditions: solid waste generated at power plants, coal-chemical plants and metallurgical plants is used, as well as a small amount of additives. Crushed coal slag is used as a filler when filling mines. This not only ensures the rational disposal and recycling of coal solid waste, but also effectively solves the problem of top sealing of mine fillers, achieving a high degree of sealing. This method not only contributes to the protection of the environment, but also increases the efficiency of the use of resources.

Metal Smelting Slag-Based Cementitious Material

Metal Smelting Slag-Based Cementitious Material

This material effectively utilizes waste slag from metal smelting plants, undergoing physical activation and chemical stimulation to produce cementitious properties for low-strength mine filling. It achieves comprehensive resource utilization of solid waste and reduces filling costs in mining.

Key Features

High strength

Proven to have excellent binding capability for fine tailings and crushed gangue, resulting in high filling strength.

Good flowability

The new material's slurry flowability is improved, benefiting construction efficiency.

Strong anti-segregation performance

Effectively avoids common issues such as water separation and segregation, ensuring uniformity and quality of the filling body.

Low hydration heat

With minimal or no clinker usage, the new material has low hydration heat, reducing volumetric expansion and cracking during underground filling.

Cost-effective

With lower usage while maintaining the same filling strength, the new material effectively reduces filling costs and increases the utilization rate of tailings and coal gangue, minimizing environmental impact.