Definition and Source‌

Fly ash cenospheres are lightweight, hollow, micrometer-sized spherical particles found in fly ash from coal-fired power plants. With a density typically lower than water (0.4-0.8 g/cm³), they can float on water, hence the name "cenospheres". Formation of cenospheres: They are formed as tiny particles in coal combustion undergo melting and fusing processes. During coal combustion, a large amount of flue gas is generated, containing numerous tiny particles. These particles undergo high temperature and pressure, expanding and fusing to form hollow cenospheres. These fused hollow cenospheres possess characteristics such as lightweight, porosity, and high temperature resistance, making them have broad application potential in various industrial fields. The hollow structure not only reduces the material's density but also enhances its thermal insulation performance, making cenospheres an ideal lightweight, high-performance material. Properties: high fire resistance, lightweight, thermal insulation, high hardness, high strength, fine particle size, electrical insulation, good fluidity, high filling power, chemical stability, low shrinkage rate.

‌Product Parameters :

Product Characteristics‌

1. 1‌.High Fire Resistance‌: The main components are silicon dioxide and aluminum oxide, both having high melting points, giving cenospheres a fire resistance of 1600-1700℃.

2. ‌2.Lightweight and Thermal Insulation‌: With thin walls and semi-vacuum cavities, heat conduction is slow. Bulk density is 250-450 kg/m³, and thermal conductivity is 0.08-0.1 at room temperature.

3. ‌3.High Hardness and Strength‌: Formed as a hard vitreous body from silicate and alumina oxide minerals, hardness reaches Mohs 6-7, and compressive strength is 70-140 MPa.

4. 4‌.Excellent Electrical Insulation‌: After removing magnetic particles, cenospheres are high-performance insulating materials, with resistance increasing as temperature rises.

5. ‌5.Fine Particle Size and Large Specific Surface Area‌: Natural particle size is 1-250 micrometers, and specific surface area is 300-360 cm²/g, ready for direct use.

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‌Factory Showcase & Packaging Methods ：

Packed in big bags with each bag weighing 600 kg, and dimensions of 120012001200 mm. Custom packaging is available based on customer requirements.

Application Markets：‌

1. ‌1.Refractory and Thermal Insulation Materials‌: Used in making lightweight sintered refractory bricks, lightweight unfired refractory bricks, casting insulation risers, etc.

2. 2‌.Building Materials‌: Can be used in building decoration, high-grade pavement materials, roof waterproofing and thermal insulation coatings, etc. Lightweight concrete - reduces density and improves thermal insulation performance. Thermal insulation materials - used in preparing foam ceramics, fire-retardant coatings, etc.

3. ‌3.Petroleum Industry‌: Used in oilfield cementing, pipeline corrosion protection and thermal insulation, drilling mud lightening agents, etc. Oilfield cementing - drilling fluid lightening agent.

4. 4‌.Electrical Insulation Materials‌: Can be used as plastic activators and fillers, high-temperature and high-pressure insulators, etc. Plastic activators and fillers - enhance the strength and reduce the weight of plastics and rubbers.

5. ‌5.Paint Industry‌: Used in paints, inks, adhesives, stealth coatings, etc.

6. 6‌.Aerospace and Space Exploration‌: Used in composites for satellite, rocket, and spacecraft surfaces, satellite fireproof layers, etc. Metal-based composites - used in aerospace lightweight components.