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Delaspheres™(Cenospheres) are small, high strength, extremely lightweight, free flowing, non porous, hollow ceramic spheres. Cenospheres are used primarily as lightweight fillers in the oil and gas, plastics, building, refractories, automotive, aerospace and surface coating industries. Delaspheres™ are available in both grey and white to suit the intended application.

You can download our Material Safety Data and Technical Data Sheets from our Data Centre.

DELASPHERES™ RANGE OF PRODUCTS

DELASPHERES™ DRSOW 500

The speciality Delaspheres™ range is comprised of white to high white Cenospheres with a variety of particle size distributions. Produced from the combustion of very specific sources of coal, this grade offers the end user superb qualities as an inert, low density, high Alumina filler. Typical applications include foundry, spackle, refractories, surface coatings, flame retardants and sealants.

Chemical Analysis Typical
Alumina Al2O3  28 – 38 %  
Silica SiO2  51 – 70 %  
Iron Fe2O3  1.0 – 3.0 %  
Calcium CaO 2.0 – 3.0 %  
Magnesium MgO 0.1 – 2.0 %  

Physical Data Typical
Colour   White  
Characteristics    Free flowing, inert, lightweight, spherical.  
Average Particle Density    0.66 – 0.86 g/cc   
Average Bulk Density    0.37 – 0.45 g/cc max
Moisture Content    0.5 % max
Sinkers    5 % max

Activity Typical
Melting Point   1680 °C min
Packing Factor    60 – 65 %  
Hardness   Mohs Scale 5  
Crush Strength   1500 – 3250 psi  

Particle Size Distribution* Typical
500 µm passing 99.8 %  
300 µm passing 95 – 97 %  
150 µm passing 40 – 80 %  

*Malvern Mastersizer 2000, Fraunhofer

DELASPHERES™ DRSOW 150

The speciality Delaspheres™ range is comprised of white to high white Cenospheres with a variety of particle size distributions. Produced from the combustion of very specific sources of coal, this grade offers the end user superb qualities as an inert, low density, high Alumina filler. Typical applications include foundry, spackle, refractories, surface coatings, flame retardants and sealants.

Chemical Analysis Typical
Alumina Al2O3  28 – 38 %  
Silica SiO2  51 – 70 %  
Iron Fe2O3  1.0 – 3.0 %  
Calcium CaO 2.0 – 3.0 %  
Magnesium MgO 0.1 – 2.0 %  

Physical Data Typical
Colour   White  
Characteristics    Free flowing, inert, lightweight, spherical.  
Average Particle Density    0.66 – 0.86 g/cc   
Average Bulk Density    0.37 – 0.45 g/cc max
Moisture Content    0.5 % max
Sinkers    5 % max

Activity Typical
Melting Point   1680 °C min
Packing Factor    60 – 65 %  
Hardness   Mohs Scale 5  
Crush Strength   1500 – 3250 psi  

Particle Size Distribution* Typical
150 µm  passing 99.8 %  

*Malvern Mastersizer 2000, Fraunhofer

DELASPHERES™ DRSOW 106

The speciality Delaspheres™ range is comprised of white to high white Cenospheres with a variety of particle size distributions. Produced from the combustion of very specific sources of coal, this grade offers the end user superb qualities as an inert, low density, high Alumina filler. Typical applications include foundry, spackle, refractories, surface coatings, flame retardants and sealants.

Chemical Analysis Typical
Alumina Al2O3  28 – 38 %  
Silica SiO2  51 – 70 %  
Iron Fe2O3  1.0 – 3.0 %  
Calcium CaO 2.0 – 3.0 %  
Magnesium MgO 0.1 – 2.0 %  

Physical Data Typical
Colour   White  
Characteristics    Free flowing, inert, lightweight, spherical.  
Average Particle Density    0.66 – 0.86 g/cc   
Average Bulk Density    0.37 – 0.45 g/cc max
Moisture Content    0.5 % max
Sinkers    5 % max

Activity Typical
Melting Point   1680 °C min
Packing Factor    60 – 65 %  
Hardness   Mohs Scale 5  
Crush Strength   1500 – 3250 psi  

Particle Size Distribution* Typical
106 µm  passing 99.8 %  

*Malvern Mastersizer 2000, Fraunhofer

DELASPHERES™ DUEW 500 MD

The speciality Delaspheres™ range is comprised of white to high white Cenospheres with a variety of particle size distributions. Produced from the combustion of very specific sources of coal, this grade offers the end user superb qualities as an inert, low density, high Alumina filler. Typical applications include foundry, spackle, refractories, surface coatings, flame retardants and sealants.

Chemical Analysis Typical
Alumina Al2O3  28 – 38 %  
Silica SiO2  51 – 70 %  
Iron Fe2O3  1.0 – 3.0 %  
Calcium CaO 0.2 – 2.0 %  
Magnesium MgO 0.5 – 2.0 %  

Physical Data Typical
Colour   White  
Characteristics    Free flowing, inert, lightweight, spherical.  
Average Particle Density    0.70 – 0.85 g/cc   
Average Bulk Density    0.36 – 0.45 g/cc max
Moisture Content    0.5 % max
Sinkers    5 % max

Activity Typical
Melting Point   1500 – 1700 °C min
Packing Factor    60 – 65 %  
Hardness   Mohs Scale 5  
Crush Strength   1500 – 3250 psi  

Particle Size Distribution* Typical
500 µm passing 100 %  
500 – 300 µm retained 0 – 2 %  
300 – 150 µm retained 40 – 60 %  
150 – 100 µm retained 25 – 40 %  
100 – 45 µm retained 5 – 15 %  
45 µm passing 0 – 2 %  

 

*Screened to customer's specification

DELASPHERES™ DUEW 500 LF

The speciality Delaspheres™ range is comprised of white to high white Cenospheres with a variety of particle size distributions. Produced from the combustion of very specific sources of coal, this grade offers the end user superb qualities as an inert, low density, high Alumina filler. Typical applications include foundry, spackle, refractories, surface coatings, flame retardants and sealants.

Chemical Analysis Typical
Alumina Al2O3  28 – 38 %  
Silica SiO2  51 – 70 %  
Iron Fe2O3  1.0 – 3.0 %  
Calcium CaO 0.2 – 1.0 %  
Magnesium MgO 0.2 – 1.0 %  

Physical Data Typical
Colour   White  
Characteristics    Free flowing, inert, lightweight, spherical.  
Average Particle Density    0.70 – 0.85 g/cc   
Average Bulk Density    0.36 – 0.45 g/cc max
Moisture Content    0.5 % max
Sinkers    5 % max

Activity Typical
Melting Point   1500 – 1700 °C min
Packing Factor    60 – 65 %  
Hardness   Mohs Scale 5  
Crush Strength   1500 – 3250 psi  

Particle Size Distribution* Typical
500 µm passing 99.8 %  
300 µm passing 95 – 97 %  
150 µm passing 30 – 50 %  
90 µm passing 9 – 12 %  

*Malvern Mastersizer 2000, Fraunhofer

DELASPHERES™ DUUM 500

The standard Delaspheres™ range is comprised of light to dark grey Cenospheres with a benchmark particle size distribution. Produced from the combustion of coal, this grade offers the end user superb qualities as an inert low density lightweight filler. Typical applications include additives for drilling muds, risers, concrete repair mortars, oil well cements, renders, ceramic tile adhesives, epoxy resins, applications in PVC, polyester resins, latex emulsions, polyurethane, fire protection and sound dampening.

Chemical Analysis Typical
Alumina Al2O3  21 – 31 %  
Silica SiO2  52 – 57 %  
Iron Fe2O3  4.0 – 6.0 %  
Calcium CaO 0.5 – 3.0 %  
Magnesium MgO 1.4 – 2.5 %  

Physical Data Typical
Colour   Grey  
Characteristics    Free flowing, inert, lightweight, spherical.  
Average Particle Density    0.67 – 0.76 g/cc   
Average Bulk Density    0.35 – 0.45 g/cc max
Moisture Content    0.5 % max
Sinkers    5 % max

Activity Typical
Melting Point   1200 – 1350 °C min
Packing Factor    60 – 65 %  
Hardness   Mohs Scale 5  
Crush Strength   1500 – 3250 psi  

Particle Size Distribution* Typical
500 µm passing 99.8 %  
300 µm passing 95 – 97 %  
150 µm passing 30 – 80 %  

 

*Malvern Mastersizer 2000, Fraunhofer

DELASPHERES™ DUEN 500

The standard Delaspheres™ range is comprised of light to dark grey Cenospheres with a benchmark particle size distribution. Produced from the combustion of coal, this grade offers the end user superb qualities as an inert low density lightweight filler. Typical applications include additives for drilling muds, risers, concrete repair mortars, oil well cements, renders, ceramic tile adhesives, epoxy resins, applications in PVC, polyester resins, latex emulsions, polyurethane, fire protection and sound dampening.

Chemical Analysis Typical
Alumina Al2O3  15 – 35 %  
Silica SiO2  60 – 75 %  
Iron Fe2O3  1.0 – 7.0 %  
Calcium CaO 0.2 – 4.0 %  
Magnesium MgO 0.5 – 2.0 %  

Physical Data Typical
Colour   Grey  
Characteristics    Free flowing, inert, lightweight, spherical.  
Average Particle Density    0.72 – 0.75 g/cc   
Average Bulk Density    0.35 – 0.45 g/cc max
Moisture Content    0.5 % max
Sinkers    5 % max

Activity Typical
Melting Point   1200 – 1350 °C min
Packing Factor    60 – 65 %  
Hardness   Mohs Scale 5  
Crush Strength   1500 – 3250 psi  

Particle Size Distribution* Typical
500 µm passing 99.8 %  
300 µm passing 95 – 97 %  
150 µm passing 30 – 80 %  

 

*Malvern Mastersizer 2000, Fraunhofer

DELASPHERES™ S 500-110

The standard Delaspheres™ range is comprised of light to dark grey Cenospheres with a benchmark particle size distribution with the option of varying particle densities. Produced from the combustion of coal, this grade offers the end user superb qualities as an inert lightweight filler. Typical applications include additives for drilling muds, risers, concrete repair mortars, oil well cements, renders, ceramic tile adhesives, epoxy resins, applications in PVC, polyester resins, latex emulsions, polyurethane, fire protection and sound dampening.

Chemical Analysis   Typical  
Alumina Al2O3 27 – 44 %  
Silica SiO2 50 – 63 %  
Iron Fe2O3 0.1 – 5.0 %  
Calcium CaO 0.2 – 1.0 %  
Magnesium MgO 0.3 – 2.0 %  

Physical Data   Typical  
Colour   Grey  
Characteristics   Free flowing, inert, lightweight, spherical.  
Average Particle Density   1.1 g/cc  
Average Bulk Density   0.45 g/cc  max
Moisture Content   0.5 %  max
Sinkers   5 %  max

Activity    Typical  
Melting Point    1200 – 1350 °C  
Packing Factor    60 – 65 %  
Hardness    Mohs Scale 5   
Crush Strength    1500 – 3250 psi   

Particle Size Distribution*    Typical  
500 µm  passing 100 %   
300 µm  passing 93 %  
150 µm  passing 50 %   

*Malvern Mastersizer 2000, Fraunhofer

DELASPHERES™ S 500-100

The standard Delaspheres™ range is comprised of light to dark grey Cenospheres with a benchmark particle size distribution with the option of varying particle densities. Produced from the combustion of coal, this grade offers the end user superb qualities as an inert lightweight filler. Typical applications include additives for drilling muds, risers, concrete repair mortars, oil well cements, renders, ceramic tile adhesives, epoxy resins, applications in PVC, polyester resins, latex emulsions, polyurethane, fire protection and sound dampening.

Chemical Analysis   Typical  
Alumina Al2O3 27 – 44 %  
Silica SiO2 50 – 63 %  
Iron Fe2O3 0.1 – 5.0 %  
Calcium CaO 0.2 – 1.0 %  
Magnesium MgO 0.3 – 2.0 %  

Physical Data   Typical  
Colour   Grey  
Characteristics   Free flowing, inert, lightweight, spherical.  
Average Particle Density   1.0 g/cc  
Average Bulk Density   0.45 g/cc  max
Moisture Content   0.5 %  max
Sinkers   5 %  max

Activity    Typical  
Melting Point    1200 – 1350 °C  
Packing Factor    60 – 65 %  
Hardness    Mohs Scale 5   
Crush Strength    1500 – 3250 psi   

Particle Size Distribution*    Typical  
500 µm  passing 100 %   
300 µm  passing 93 %  
150 µm  passing 50 %   

*Malvern Mastersizer 2000, Fraunhofer

DELASPHERES™ S 500-95

The standard Delaspheres™ range is comprised of light to dark grey Cenospheres with a benchmark particle size distribution with the option of varying particle densities. Produced from the combustion of coal, this grade offers the end user superb qualities as an inert lightweight filler. Typical applications include additives for drilling muds, risers, concrete repair mortars, oil well cements, renders, ceramic tile adhesives, epoxy resins, applications in PVC, polyester resins, latex emulsions, polyurethane, fire protection and sound dampening.

Chemical Analysis   Typical  
Alumina Al2O3 27 – 44 %  
Silica SiO2 50 – 63 %  
Iron Fe2O3 0.1 – 5.0 %  
Calcium CaO 0.2 – 1.0 %  
Magnesium MgO 0.3 – 2.0 %  

Physical Data   Typical  
Colour   Grey  
Characteristics   Free flowing, inert, lightweight, spherical.  
Average Particle Density   0.95 g/cc  
Average Bulk Density   0.45 g/cc  max
Moisture Content   0.5 %  max
Sinkers   5 %  max

Activity    Typical  
Melting Point    1200 – 1350 °C  
Packing Factor    60 – 65 %  
Hardness    Mohs Scale 5   
Crush Strength    1500 – 3250 psi   

Particle Size Distribution*    Typical  
500 µm  passing 100 %   
300 µm  passing 93 %  
150 µm  passing 50 %   

*Malvern Mastersizer 2000, Fraunhofer

DELASPHERES™ S 500-85

The standard Delaspheres™ range is comprised of light to dark grey Cenospheres with a benchmark particle size distribution with the option of varying particle densities. Produced from the combustion of coal, this grade offers the end user superb qualities as an inert lightweight filler. Typical applications include additives for drilling muds, risers, concrete repair mortars, oil well cements, renders, ceramic tile adhesives, epoxy resins, applications in PVC, polyester resins, latex emulsions, polyurethane, fire protection and sound dampening.

Chemical Analysis   Typical  
Alumina Al2O3 27 – 44 %  
Silica SiO2 50 – 63 %  
Iron Fe2O3 0.1 – 5.0 %  
Calcium CaO 0.2 – 1.0 %  
Magnesium MgO 0.3 – 2.0 %  

Physical Data   Typical  
Colour   Grey  
Characteristics   Free flowing, inert, lightweight, spherical.  
Average Particle Density   0.85 g/cc  
Average Bulk Density   0.45 g/cc  max
Moisture Content   0.5 %  max
Sinkers   5 %  max

Activity    Typical  
Melting Point    1200 – 1350 °C  
Packing Factor    60 – 65 %  
Hardness    Mohs Scale 5   
Crush Strength    1500 – 3250 psi   

Particle Size Distribution*    Typical  
500 µm  passing 100 %   
300 µm  passing 93 %  
150 µm  passing 50 %   

*Malvern Mastersizer 2000, Fraunhofer

DELASPHERES™ S200/600A

The standard Delaspheres™ range is comprised of mid to dark grey Cenospheres with a benchmark particle size distribution. Produced from the combustion of coal, this grade offers the end user superb qualities as an inert low density lightweight filler. Typical applications include additives for drilling muds, risers, concrete repair mortars, oil well cements, renders, ceramic tile adhesives, epoxy resins, applications in PVC, polyester resins, latex emulsions, polyurethane, fire protection and sound dampening.

Chemical Analysis Typical
Alumina Al2O3  24 – 38 %  
Silica SiO2  50 – 65 %  
Iron Fe2O3  1.0 – 6.0 %  
Calcium CaO 0.2 – 1.0 %  
Magnesium MgO 0.3 – 2.0 %  

Physical Data Typical
Colour   Grey  
Characteristics    Free flowing, inert, lightweight, spherical.  
Average Particle Density    1.3 – 1.8 g/cc   
Average Bulk Density    0.32 – 0.40 g/cc max
Moisture Content    0.3 % max
Sinkers    5 % max

Activity Typical
Melting Point   1200 – 1350 °C min
Packing Factor    60 – 65 %  
Hardness   Mohs Scale 5  
Crush Strength   1500 – 3250 psi  

Particle Size Distribution* Typical
700 µm passing 100 %  
700 – 500 µm retained 15 – 20 %  
500 – 355 µm retained 35 – 45 %  
355 – 250 µm retained 20 – 35 %  
250 – 125 µm retained 8 – 20 %  
125 – 63 µm retained 2 % max  
63 µm passing 0 – 1 %  

 

*Malvern Mastersizer 2000,Fraunhofer

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