Flyash, Cenosphere, Fly Ash Company, Fly Ash Suppliers

Cenosphere :

Cenospheres are inert hollow silicate spheres. Cenospheres primarily used to reduce the weight of Plastics, Rubbers, Resins, cements etc. used extensively as filler lubricants in oil drilling operations under high heat and high stress conditions down the hole. Also used as oil well cementing, mud putty and similar applications.

Cenospheres were first used in the United states as an extender for plastic compounds , as they are compatible with plastisols thermoplastics, Latex, Polyesters, Epoxies, Phenolic resins, and urethanes. The compatibility of Cenospheres with speciality cements and adhesives coating and composites have been well identified. Cenosphere are widely used in a variety of products, including sports equipment, insulations, automobile bodies, marine craft bodies, paints and fire and heat protection devices.

Typically applied in Gypsum board jointing compounds, veneering plasters, stuccos, sealants, coatings and cast resins. Providing the advantages of reduces weight , increased filler loadings, better flow characteristics, less shrinkage and warping and reduces water absorption.
 

 

Listed below is the multitude of applications where Cenospheres are now extensively used.

Ceramics :- Refractories, Castables, Tile, Fire Bricks, Aluminum Cement, Insulating , Material, Coatings.


Plastics :-BMC,SMC, Injection Moulding, Moulding, Extruding PVC Flooring, Film, Nylon, High density Polyethylene, Low Density Polyethylene, polypropylene.


Constuction :- Speciality Cements, Mortars Grouts Stuccos, Roofing Material, Acoustical Panels, Coatings, Shotcrete, Gunite Etc.


Recreation :-Marine Craft Floation Devices, Bowling Balls, Surf Boards, Kayaks, Golf Equipment, Footwear, Lawn & Garden Décor.


Automotive :- Composites , Undercoatings, Tires, Engine Parts, Brake Pads, Trim Mouldings, Body Fillers, Plastics, Sound Proofing Materials.


Energy & Tecnology :- Oil well Cements, Drilling Muds, Industrial Coatings, Grinding Materials, Aerospace Coatings and & composites, Explosives, Propeller Blades.



Our Associate - SWIFT SERVICES  Hyderabad is harvesting and processing Company for Microsphere, Cenosphere & Dry Fly ash and other fly ash related products. .We have been regularly supplying such material to customers in India and Abroad. We are interested in making supplies to you also, on specification and approval of sample, rates, terms and conditions.
 


Characteristics:-
Lightweight
Free flowing
Off-white in colour
Spherical
Inert
Corrossion Proof
Fire and flame retardant
Low density
Improved Flowablity
Low shrinkage
Thermal stability
High compressive strength

Chemical Properties for Cenosphere :

1. Silica 50-60%
2. Alumina 33-39%
3. Iron Oxide 1.3-5%
4. Calcium 0.5-1.5%
5. Manganese 0.8-1.5%
6. CO2 Gas 70%
7. Nitrogen Gas 30%

Physical Properties Of Cenosphere

1. Particle size 5 to 500 Microns
2. Density 0.45 Gms / cc
3. Moisture Less Than 2.5%
4. Sinkers Less than 5%
5. Hardness 5-6 Moh Scale
6. Loss on Ignition- 2% Max
7. Melting Point 1250-1450Deg. C
8. Solubility Negligible in water

Quantity:-75/ 100 metric Tons per Month against confirmed irrevocable Letter of Credit /TT.
Packing :- In Jumbo bags, or 25 Kgs bags.
Price : :-Price . will be quoted on request per Metric Ton.
 

 

Fly Ash :

Fly ash is one of the residues generated in the combustion of coal. Fly ash is generally captured from the chimneys of power generation facilities, whereas bottom ash is, as the name suggests, removed from the bottom of the furnace. In the past, fly ash was generally released into the atmosphere via the smoke stack, but pollution control equipment mandated in recent decades now require that it be captured prior to release. It is generally stored on site at most US electric power generation facilities.

Depending upon the source and makeup of the coal being burned, the components of the fly ash produced vary considerably, but all fly ash includes substantial amounts of silica (silicon dioxide, SiO2) (both amorphous and crystalline) and lime (calcium oxide, CaO). Fly ash is commonly used to supplement Portland cement in concrete production, where it can bring both technological and economic benefits, and is increasingly finding use in synthesis of geopolymers and zeolites.

Fly ash is added during the hydration reaction where cement and water react to solidify, it causes a chemical reaction over a long period on glassy phase such as silica and aluminum with cement hydrate, which make up about 70 to 80 percent of the fly ash. Coal components depend on where the coal is produced and the fly ash properties
 

ASTM 618F :

Two classes of fly ash are defined by ASTM C618: Class F fly ash and Class C fly ash. The chief difference between these classes is the amount of calcium, silica, alumina, and iron content in the ash. The chemical properties of the fly ash are largely influenced by the chemical content of the coal burned (i.e., anthracite, bituminous, and lignite).

 

Not all fly ashes meet ASTM C618 requirements, although depending on the application, this may not be necessary. Ash used as a cement replacement must meet strict construction standards, but no standard environmental standards have been established in the United States. 75% of the ash must have a fineness of 45 µm or less, and have a carbon content, measured by the loss on ignition (LOI), of less than 4%. In the U.S., LOI needs to be under 6%. The particle size distribution of raw fly ash is very often fluctuating constantly, due to changing performance of the coal mills and the boiler performance. This makes it necessary that fly ash used in concrete needs to be processed using separation equipment like mechanical air classifiers. Especially important is the ongoing quality verification. This is mainly expressed by quality control seals like the Indian ISI mark or the DCL mark of the Dubai Municipality.

 

Class F fly ash

 

The burning of harder, older anthracite and bituminous coal typically produces Class F fly ash. This fly ash is pozzolanic in nature, and contains less than 10% lime (CaO). Possessing pozzolanic properties, the glassy silica and alumina of Class F fly ash requires a cementing agent, such as Portland cement, quicklime, or hydrated lime, with the presence of water in order to react and produce cementitious compounds. Alternatively, the addition of a chemical activator such as sodium silicate (water glass) to a Class F ash can lead to the formation of a geopolymer.

 

 

Class C fly ash

 

Fly ash produced from the burning of younger lignite or subbituminous coal, in addition to having pozzolanic properties, also has some self-cementing properties. In the presence of water, Class C fly ash will harden and gain strength over time. Class C fly ash generally contains more than 20% lime (CaO). Unlike Class F, self-cementing Class C fly ash does not require an activator. Alkali and sulfate (SO4) contents are generally higher in Class C fly ashes.

 

BS3892 :

BS3892 is the category of Fly Ash, although depending on the application BS3892 are more benefit in Pump ability of ready mix concrete 

 

 

 

 

 

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