Use of Cenosphere in Various Industries

A Cenosphere is a type of hollow microscopic ball that is made up of smooth silica and aluminum and other minor ceramic elements. A Cenosphere is also known as Ceramic sphere. Cenospheres are derived in the coal power plants. It has been used for more than 30 years over the world. It has helped us in improving the qualities of many manufactured products in India. When the coal is burnt in thermal power plants, it produces a fly ash that contains ceramic particles that is made largely of alumina and silica. The particles that are produced in the process of coal burning, produces a part of fly ash. In India, Cenospheres are largely made up of silica, iron and alumina. The size of a Cenosphere ranges from 1 to 500 microns that have an average compressive strength of 3000+ psi. Cenospheres are widely used in a variety of products as fillers in low density concrete. Cenospheres are used in plastic and composite materials that are used for producing bowling balls, surfboards, kayaks, in fire bricks, in floor tiles, in insulating materials and in automotive components. Cenosphere are described as the multifunctional filler that mixes well in binders and resins.

Most of the Cenospheres are scooped up or take out from ash ponds. Ash ponds are the place where the fly ash is carried out when the wet disposal takes place in the thermal power plants. Some of the Cenospheres gets collected by themselves at the thermal power plants. The wet microspheres that are collected in the ash ponds are then dried up then processed to specifications and then it is packed up to meet customer requirements. All the Cenospheres that we see are not similar in nature. In fact, all of them are quite different from each other. The property of Cenospheres depends on the consistency of the coal used and it also depends on the operating parameters of the thermal power plant. If the manufacturer makes two things constant, that is, the consistency of the coal used and the operating parameters of the thermal power plants, then the Cenosphere processed would be quite constant.


Top Cenosphere Exporters in India

The word Cenosphere has been taken from two Greek words, that is, Kens (empty) and Sphaera (circle). Cenospheres are hollow circle which is light weighted. It is mostly a part of alumina and silica. They are microspheres which are a result of byproduct of coal combustion in the thermal power plants. When the coal is burnt in the thermal power plants, it produces a fly ash and that is what we refer to as Cenospheres. The fly ash is then weighted down with air or torpid gas. These are then utilized as fillers in the assembling of paints, in plastics lightweight totals for bond, gums; pottery and other organized items. The size and color of the Cenospheres are not at all similar. The chemical composition and structure of the Cenosphere depends largely on the composition of the coal that is generated by them. The thickness of Cenosphere is around 0.4 to 0.8 g/cm3, this property offers them with an amazing daintiness. In India, Cenospheres are further used as fillers as a piece of bond to use it in a low thickness concrete cements. Later on, the manufacturers of Cenospheres have begin filling metals and polymers with Cenospheres so that it can be used in light weighted composite materials with higher quality than variety of foam materials. You can contact Cenospheres exporters in India.


There are various applications of Cenospheres. Some of them are listed below:

  • Oil well and geo warm establishing
  • Warm protection paints
  • Light weight concrete
  • Spaces make protection
  • Preparing of electrical transformers and curls

Cenospheres are empty and void circle which is light in weight and inactive. It is made up of the maximum part of alumina and silica. These are empty ceramic microspheres that are fly ashes and it is a result of coal combustion. With the help of electric force, the fly ashes of Cenospheres are weighted down with air or torpid gas. It makes most of the fillers as useful in assembling of paints, plastics, lightweight totals for bond, gums; pottery and other organized items.

Know How Cenosphere is processed

The word Cenosphere is derived from two Greek words ‘Kenos’ which means hollow or void and ‘Sphaera’ which means sphere or round, that literally means ‘hollow spheres’. A Cenosphere is a type of hollow sphere, light weighted and inert that is made of silica and alumina. It is produced as a byproduct of coal combustion at thermal power plants. Cenosphere are light, hard and rigid, waterproof and insulative. It is excellent light-weight filler. This property of light weight makes them useful in a variety of products, especially in fillers. Nowadays, Cenosphere are used in cement as fillers to produce low density concrete. Now, some of the manufactures have started mixing Cenosphere with metals and polymers to make them light weight. In other words, Cenosphere is also known as Hollow Ceramic Microspheres. The density of Cenosphere is about 0.4-0.8 g/cm3 that is, 0.014–0.029 lb/cu in, this property gives them great lightness. Their color varies from gray to almost white.


Cenosphere are occurred naturally as a byproduct of the burning of coal in thermal power plants. The burning process of coal in thermal power plants produces fly ash of coal that contains ceramic particles that is made of Alumina and Silica. The process of coal burning and the fly ash is produced at temperatures of 1,500 to 1,750°C that is (2,730 to 3,180 °F). It is formed through complicated physical and chemical transformation. The chemical composition and structure depends upon the composition of coal that generated them.

Here are some of the uses of Cenosphere:

  • In synthetic foams, Cenosphere are used as filler. It gives us a number of benefits such as adding strength to foam, reducing costs, thermal protection etc.
  • For years, Cenosphere have been used in oil drilling. It is used to lower the density of a petroleum cement paste.
  • It is often used in paints and coating to regulate infra red radiation.
  • The properties of Cenosphere such as re-formable, strength etc don’t let the thermosetting and thermoplastics shrink. This is the reason that Cenosphere is being used for years in manufacturing polymers and plastics.

Order Strong and Light Weighted Cenosphere from India

Cenosphere are a kind of spherical, hollow, low density and free flowing micro particles. The Cenosphere are produced as a by-product of the coal combustion at coal power plants. The size of these particles varies from 10 µm to 300 µm. It is strong and light weighted and has the capability to resist high temperature. There is a vacuum inside these Cenosphere particles that gives them a good thermal and insulation property. This is the only reason which makes the Cenosphere an ideal product for insulation as well as automotive applications. The automotive applications of Cenosphere include tyres, clutch facings, brake linings and also friction linings. The process of coal burning is performed at the thermal power plants to produce fly ash that generally contains ceramic substances. If the coal composition and the temperature of the boiler furnace is proper or suitable, then some of the particles of the ash produced undergo a rapid change in physical and chemical transformation to produce Cenosphere, otherwise, the particles of Cenosphere are irregular and random in their shape. As mentioned above, that the Cenosphere are light in weight, and therefore, it is primarily used as filler in oil, gas, plastics, buildings, aerospace, and factories, automotive and also in surface coating industries. Therefore, Cenosphere are described as the multifunctional filler that mixes well in binders and resins like thermosetting and thermoplastics. The advantages of buying Cenosphere from manufacturers are as follows:


  • It will surely enhance the flow ability.
  • The strength of the Cenosphere is good and is used in Bonding, internal structure such as asphalt, concretes, paints, ceramics.
  • It also decreases the cost of raw materials.
  • The spherical property of Cenosphere further helps in ball bearing effect for molding and trowel work.
  • If the byproduct of coal is used to produce fly ash then the weight of end product also decreases.

Cenosphere have a property of low warm conductivity. They have exceptional mix of low particular gravity, high pressure, and controlled size, great warm and responsible protecting property. They are generally very hard and flexible, waterproof, light and insulative.

Fly Ash Versus Cenosphere

Cenospheres are unique free-flowing particles composed of hollow, hard-shelled, minute spheres. A small portion of the PFA (Pulverized fuel ash) formed from the combustion of coal at the thermal power plant is produced as cenosphere India. It is assumed that only about 1 percent of Cenosphere is produced in fly ash from thermal plants due to their hollow and low-density nature and they float in the lagoons where fly ash is discharged. Cenosphere largely consists of Silica, Iron, and alumina. The size of the particles varies ranging from 1 to 500 microns, having an average compressive strength of 3000+ psi. They are alternatively also referred as hollow spheres, microspheres, microballoons, hollow ceramic microspheres, and glass beads. When the hollow spheres float in the lagoons, they are collected and further isolation is carried by froth floatation and then dried. The final application is carried out in a pneumatic conveying system which is connected to a tribo electric separator. In this separator, the ash is divided into three fractions and the cenosphere particles are then separated from iron and carbon. The end product is then used for a variety of applications.


What is fly ash?

As mentioned above, it is considered that only about 1 percent of cenosphere India is produced in the fly ash during the coal combustion in thermal power plant. When coal is burned at a combustion temperature approximately of about 2800oF, the non-combustible ores occurring naturally from coal combustion forms bottom ash and fly ash. According to the cenosphere suppliers in India, bottom ash is a light-weight aggregate component which tumbles to the boiler bottom for collection; whereas, fly ash is carried off with the flue gases. Fly ash particles are then collected and stored in silos for testing and then utilized in different applications for its beneficial chemical and physical properties.

Fly ash material is used widely for its several beneficial characteristics like it increases strength and durability of the application. Further, fly ash particles are less disposed to chemical attacks such as de-icing salts and soil sulfates and thus, alleviate the negative effect of deleterious aggregates.

Cenosphere from India for Wide-ranging Applications

Cenosphere is inert hollow spheres made largely of silica and alumina and is produced in the process of coal combustion at the thermal power plant. Cenosphere from India is primarily used as a weight-resistant component in a number of applications including plastics, rubbers, cement, and resins. It is also used extensively as filler lubricants for oil drilling operations done under extreme temperature and stressful conditions down the hole. Cenosphere particles are also used as mud putty, oil well cementing, and other such applications.


Initially, cenosphere particles were used in the United States for a variety of applications as an extender for plastic compounds and were compatible with Latex, plastisols thermoplastics, polyesters, phenolic resins, epoxies, and urethanes. Till now, the compatibility of cenospheres with composites and specialty cement and the adhesive coating has been well identified. And in fact, Cenosphere from India are used widely for a variety of products including insulations, sports equipment, automobile bodies, paints, fire and heat protection devices, and marine craft bodies. Classically, it is applied in Gypsum board (fire, moisture, and soundproof solution for improving the quality of indoor air) jointing compounds, stuccos, veneering plasters, sealants, coatings and cast resins. Undoubtedly, it provides huge benefits to the application like reduced weight, better flow characteristics, improved filler loadings, reduced water absorption, reduced shrinkage, and warping.

Characteristics of cenosphere from India:

  • Lightweight
  • Free flowing
  • Off-white in color
  • Spherical
  • Inert
  • Corrosion Resistant
  • Fire and flame retardant
  • Low density
  • Improved Flowability
  • Low shrinkage
  • Thermal stability
  • High compressive strength

Extensive usage of cenosphere from India for different applications:

  • Ceramics – Castables, tiles, refractories, fire bricks, tiles, insulating, material coatings, aluminum
  • Plastics – injection molding, BMC, SMC, molding, nylon, extruding PVC flooring, film, high-density polyethylene, polypropylene, low-density polyethylene
  • Construction – Mortars grouts, specialty cement, roofing material, stuccos, acoustical panels, Shotcrete, coatings, gunite, and so on
  • Recreation – Kayaks, Marine craft floatation devices, surfboards, bowling balls, golf equipment, lawn and garden décor, and footwear
  • Automotive – Under-coatings, composites, tires, brake pads, engine parts, trim molding, plastics, body fillers, and soundproofing materials
  • Energy and technology – Drilling muds, oil well cement, industrial coatings, aerospace coatings and composites, and propeller blades.


Top Reasons Behind the Increase in Export of Cenosphere from India?

A cenosphere is a lightweight, inert, hollow sphere which is made largely of silica and alumina filled with air and inert gas. Typically, cenosphere India is produced as a byproduct of coal combustion at thermal power plants. Usually, the color of this byproduct varies from gray to almost white, having a density of about 0.4 to 0.8 g/cm3 which gives them a great buoyancy. Combustion is a high-temperature exothermic redox chemical reaction of a fuel and an oxidant, generally, atmospheric oxygen producing oxidized in a mixture of a chemical reaction is termed as smoke. Burning in a fire producing flame, the heat produced can make combustion self-sustaining. This often goes through a complicated sequence of elementary radical reactions. That is solid fuels including wood primarily undergo endothermic pyrolysis to produce gaseous fuels where combustion is supplied to produce more heat.


The particles of Cenosphere India are hard, rigid, innoxious, lightweight, waterproof, and insulative making them highly useful for a range of products, notably as fillers. Filler particles are mixed with materials such as composite material, plastics, and concrete to lower the consumption and improve some properties of the mixture. Globally more than 555 million tons of fillers are used annually for different applications including paper, paint and coatings, plastics, rubbers, concrete, adhesives, and sealants.  Cenospheres are also used widely as fillers in cement for producing low-density concrete. In recent years, manufacturers also started using cenospheres for filling metals and polymers to make them lightweight composite materials with enhanced strength than other types of foam materials. These composite materials are known as syntactic foam. Aluminum-based syntactic foams are widely used in the automotive sectors.

The combustion at thermal power plant takes place at the temperature of 1500o to 1750o C (2730o to 3180o F) through complicated physical and chemical transformation. However, the chemical composition and structure of Cenosphere India considerably depends on the composition of coal then generated. Basically, the ceramic particles produced in fly ash have three type of structure:

  • Precipitator (solid)
  • Cenospheres (hollow)
  • Plerospheres (hollow with large diameter)

A brief About the Particles by the Cenosphere Suppliers India

A Cenosphere is an inert, lightweight, hollow sphere consists largely of silica and alumina and the particles are filled with air or inert gas, typically formed as a byproduct of coal combustion at thermal power plants. However, the 28 years ago the definition was different. Until the 1990s it was restricted to a largely carbonaceous sphere produced by the oxygen-deficient combustion of a liquid fuel drop cooled below the temperature of 200o C (392o F) before it was actually utilized. The fuel cenosphere specified a combustion source by using fuel injected droplets or the open burning of heavy liquids like asphalt or thermoplastic material that used to bubble when burned; this burning of the bubbles produces airborne droplets of fuel. Thus, the fuel cenospheres are sometimes also used as the synonyms with glass microspheres or microballoons. However, in the present days, the Cenosphere Suppliers India hoard the particles with the density ranging from 0.4 to 0.8 g/cm3 (0.014-0.029 lb./cu in) that gives them a great buoyancy. The color of cenospheres ranges from gray to almost white.


Glass microspheres are tiny spheres of glass manufactured for a broad range of uses including in research, consumer goods, medicine, and several other areas. The spherical size of glass microspheres has a diameter that usually ranges between 1 to 1000 micrometers.

Cenospheres are naturally occurring by-products produced during the burning process at coal-fired power plants. As mentioned above that they are inert, lightweight, and hollow granules comprised largely of silica and alumina, the cenosphere suppliers India don’t consider the particles as a pozzolan. Pozzolans are silicate-based material that reacts with the calcium hydroxide produced by hydrating cement to develop extra cementitious materials. Calcium hydroxide accounts for up to 25% of the hydrated cement which doesn’t contribute to the concrete’s durability and strength. Thus, the pozzolans are mixed with calcium hydroxide to form extra calcium silicate hydrate; the mixture is responsible for holding concrete strength. By consuming in excess:

  • The strength of concrete is improved
  • The density is lowered
  • Efflorescence is decreased

Are you in Need of Best Cenosphere Suppliers in India?

Cenosphere is a sort of sialic bead and midget glass particle which is extracted from fly ash in thermal power plants, the reason is that it can be adrift on the water, it is called Cenosphere. It is a chemical composition of SiO2 and Al2O3. With a melting point around 1300° Celsius, Cenospheres stand firm temperatures far higher than any comparable thin-walled hollow glass midget sphere. This extreme temperature flexibility is achieved through unparalleled refractory properties.


Cenospheres are flyspeck, exceedingly compressive power, super light in weight, frees inundated, with extreme temperature thawing point and non-porous. Cenospheres are utilized primarily as lightweight make weight are involved in the oil and gas, plastics, building, refractory, constructions, footwear, composites, automotive, recreation & coating industries. Cenospheres are available in both gray and white to suit the required application.

Cenosphere is a complete material in oil cementing work. It is normally extracted from coal fly ash, and also can be semi synthetic. The cost of semi-synthetic Cenosphere is greater than that from coal fly ash. Coal material, combustion mode, and Boiler Efficiency on a great deal affect the Quality of Cenosphere.

Cenosphere is utilized as weightlessness intermixture for oil-well cement in a wide range due to its construction features as hollow, closeness, thin wall and fine grains, and its physical properties such as low density, extreme intensity, and constant performance, it can ameliorate liquidity of cement slurry, delay light weight time of cement slurry, ameliorate the anti-gas guiding ability of cement slurry, power up the stability of the cement slurry, and it can react with the cement hydration products and developed compounds have gelation property, ameliorate the cement slurry’s power, heat resisting property and corrosion resistance, lower heat conductivity coefficient and permeability of cement stone.

Likewise, Cenosphere Suppliers in India utilizes it for cementing; Cenosphere can be utilized for painting, thermal insulation material, and construction material, refractory and so on as well.

India is an inevitable exporter of Cenosphere, and strong competitors are China and Russia, especially China. With Cenosphere Suppliers in India paying much more attention to the environment, coal fly ash abridges a lot, and it influences Cenosphere productivity.

Properties of Cenosphere Available in India

Cenospheres are the sphere of inert hollow silicate. Cenospheres primarily utilized to abridge the weight of types of cements, Rubbers, Plastics, Resins, etc. utilized all-encompassing as filler lubricants in oil drilling procedure under eminent heat and eminent stress conditions down the hole. Also utilized as oil well cementing, mud putty and similar applications.

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Cenospheres were earlier utilized in the United States as an extender for plastic compounds, as they are well matched with thermoplastics, Phenolic resins, Latex, Epoxies, Polyesters, and urethanes. The compatibility of Cenospheres with particular types of cements and adhesives coating and composites have been well identified.


  • reducing weight,
  • less shrinkage and warping
  • Reduces water absorption.
  • increased filler loadings,
  • better flow characteristics,


We cater complete project profiling of Cenospheres infusion and Processing Plant and Fly Ash dressing plant along with process technology.


Generally Cenosphere in India are being gathered from the ash ponds owing to its irrepressibility characteristics. These are skimmed out, washed, dried and sifted out as per customer’s specification for marketing. Due to immense requirement in international market for quality material, costs have gone up to a great extent whereas reach of collection from ash ponds still remains very limited without much reach for quality authority.

Well-nigh, all the ash ponds are now under control of local mafia who; for raw Cenosphere in India, charge high price without vouching any quality whatsoever. Besides quality discrepancies, collection from ash ponds remains stingy – leading to practice of mixing ash with Cenospheres without principle or scrupulous. WHEREAS in our developed process technology, one does not need to depend on collection from ash ponds at all and can extract Cenospheres right from the dry fly ash of thermal power plants. The process is a part of nanotechnology and a mergence of dry and wet process. By virtue of total control on the processes, one stands to extract reproducible quantity and quality of Cenospheres. The process generates zero outflowing and is therefore entirely non-polluting and ecofriendly.

We are a team of techno-research people having our roots in the India consecrated to the development of Cenospheres extraction and fly ash beneficiation.