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Refractory Materials

High quality raw materials coupled with seamless supply are critical to any investment casting facility.
Investment Casting Supplies has a comprehensive range of materials within our portfolio, including sands, flours, binders, and additives.
As well as providing a number of off the shelf materials we also work with you to customize materials to meet your exact requirements, all of our materials are subject to regular testing on items including thermal dilation, thermal conductivity, permeability, density, refractoriness and particles size distribution.

Technical data sheets and samples are available upon request.

Refractory Sands

Fused Alumina

Alumina (also known as Corundum or Aluminium Oxide) is the family name for inorganic compounds with the chemical formula Al2O3. Alumina is a dense material produced from bauxite. The end product has a low iron content making it particularly valuable in refractory and investment casting applications.

Zircon

BRIOREF® is a natural mineral product, calcined at high temperature. It is a pure zirconium silicate, known as “zircon” available in various grain sizes.

BRIOREF® is used in the production of refractories, foundry coatings and ceramic shell systems within the investment casting sector. 

Premium Zircon

PRIMAZIR is a natural mineral product, calcined at high temperature, and milled down to fine flour size. It is a pure zirconium silicate available in various grain sizes.

PRIMAZIR PC is a higher quality zircon with lower alumina and iron content then standard zircon materials. 

Fused Silica

Fused silica is high purity quartz sand that has been melted to form glass.Our fused silica has an extremely low thermal expansion coefficient, consistent chemistry and carefully controlled particle size distribution. Each product is specially engineered for use in foundry, refractory, investment casting and other special applications.

Mullite

Mullite material supplied by Investment Casting Supplies Ltd are of the highest quality. Mullite is an excellent, low-cost refractory material with a nominal composition of Al2O3 and SiO2.

Our Mullite material demonstrates excellent high temperature properties with excellent thermal shock and thermal stress properties.

Molochite

Molochite is a pure white made-made granular material. It is made by firing raw low-iron kaolin to very high temperatures to bring about maximum conversion of the clay crystal to crystalline mullite (usually 95%+). Its high refractoriness is harnessed in foundries, refractory and investment casting applications. 

Zircalu

ZiRCALU is a product of mineral origin that is a high quality Zircon-Alumina compound often used in place of products such as mullite. ZIRCALU combines the excellent properties of minerals such as Zircon and Alumina to make it an ideal product for use in refractories, foundries and investment casting applications. 

CastBall

CastBall demonstrates low thermal expansion, Granulometric size distribution, High permeability, High strength, and thermal stability that allows the casting of complex parts with thin wall sections. This material is becoming the preferred option over Chromite sand and Silica sand due to it eliminating the health hazards usually associated with crystalline silica exposure. 

Kaolin Clay

Kaolin clay is used for manufacturing several investment casting products including castables, kiln furniture, crucibles ceramic cores and ceramic fibre products. Kaolin demonstrates high refractoriness, high volume density, low dust content, excellent thermal expansion coefficient and excellent chemical stability. 

Refractory Flours

Fused Alumina

Alumina (also known as Corundum or Aluminium Oxide) is the family name for inorganic compounds with the chemical formula Al2O3. Alumina is a dense material produced from bauxite. The end product has a low iron content making it particularly valuable in refractory and investment casting applications.

Zircon

BRIOREF® is a natural mineral product, calcined at high temperature. It is a pure zirconium silicate, known as “zircon” available in various grain sizes. BRIOREF® is used in the production of refractories, foundry coatings and ceramic shell systems within the investment casting sector. 

Fused Silica

Fused silica is high purity quartz sand that has been melted to form glass.Our fused silica has an extremely low thermal expansion coefficient, consistent chemistry and carefully controlled particle size distribution. Each product is specially engineered for use in foundry, refractory, investment casting and other special applications.

Fused Mullite

Mullite material supplied by Investment Casting Supplies Ltd are of the highest quality. Mullite is an excellent, low-cost refractory material with a nominal composition of Al2O3 and SiO2.Our Mullite material demonstrates excellent high temperature properties with excellent thermal shock and thermal stress properties.

Fused Molochite

Molochite is a pure white made-made granular material. It is made by firing raw low-iron kaolin to very high temperatures to bring about maximum conversion of the clay crystal to crystalline mullite (usually 95%+). Its high refractoriness is harnessed in foundries, refractory and investment casting applications. 

Additives

Ammonium Alginate

Ammonium alginate dissolves in cold and hot water to form a viscous aqueous solution, and gels when in contact with polyvalent cations. A characteristic of ammonium alginate is that it does not contain metal ions such as sodium, so it has a very low ash content. In the investment casting sector it is used as a binder that leaves no residue after combustion.

Anti Foam

Antifoam is a surfactant, insoluble in the foaming medium and has surface active properties. Antifoam demonstrates low viscosity and spreads rapidly on foamy surfaces. Antifoam is often used when creating primary costs for shell system slurries. 

Cobalt Aluminate

Cobalt aluminate is made by sintering cobalt oxide with aluminium oxide  at 1200°C. It is extremely stable and historically, has been used as a colouring agent in ceramics. Cobalt aluminate is often used to create primary shell slurry to improve the surface grain of superalloy investment castings. 

Colloidal Silica

Colloidal Silica is a very stable and versatile material, this versatility allows Colloidal Silica to form the basis of ceramic shells used for the casting of a large range of metal alloys.

Ethyl Silicate

Ethyl silicate is a chemically heterogeneous mixture that is an ester of silicic acid and ethyl alcohol, Ethyl silicate is commonly used as a binder for production of ceramic shells within the investment casting industry, the use of Ethyl silicate delivers improved drying times for ceramic shells and moulds.

Liquid Latex

Latex makes the thinnest, most elastic, and strongest mould of any type of mould making rubber. It can be pulled over relatively large undercuts when releasing the model without tearing. Ideal for casting plaster and the casting of some resins. 

Wetting Agent

Wetting agent, also referred to as a surfactant is a chemical substance that increases the spreading and penetrating properties of a liquid by lowering its surface tension. Often used in a backup slurry, wetting agents improve the wetting of the refractory and improve the penetration of the slurry into the primary shell layer. 

Biocides

IOB is a broad-spectrum preservative and dry film fungicide that is effective against a wide range of fungal organisms.  IOB has been specially formulated using a combination of molecules to give best preservation and protection to investment casting slurries over prolonged periods of time.  IOB does not contain any organo-metallic compounds and is compatible with aqueous and solvent based shell system formulations.  

Further Materials

Vermiculite

Vermiculite when subjected to thermal shock has the capacity to expand by 10 to 15 times its volume. Vermiculite shows strong fire resistance, thermal and acoustic insulation, cation exchange and absorption properties.  Vermiculite is often used in fireproofing, insulation, metallurgy and foundries.

Chromite

Chromite is a dense, inert, refractory ultrabasic magma rock with low coefficients of expansion and thermal conductivity.  Chromite is used in ceramics, chemistry, foundries, friction, metallurgy and refractory products. 

BRIOMICA® / MICA-SOFT®

Mica is a naturally crystalline, translucent mineral found in granitic rocks and kaolin clays. It demonstrates excellent temperature resistance,  mechanical strength, flexibility and high chemical resistance. Mica is often used in mould release agents, drilling, welding electrodes, coatings, foundries and sound-absorbing coating.

Calcined Alumina

Our ‘AW’ series of calcined alumina has been developed using a unique process to deliver exceptional tight grain size control. ICS have 3 material grades available in AW range. This material is actively used in the production of precision refractory products and precision engineered ceramics.

Tabular Alumina

Tabular Alumina is Aluminum Oxide that has been heated to temperatures above 1,650  degrees C. Composed of tablet-like crystals, it has high heat capacity and thermal conductivity, it also demonstrates exceptional strength and volume stability at high temperatures.

Fused Spinel

Fused Spinel, Alumina-Magnesia Spinel is one of the most resistant refractory compounds on the market today. It demonstrates low thermal working temperature, outstanding refractoriness, excellent thermal and chemical stability. 

Bubble Alumina

The main consistent of bubble alumina is a high-quality alumina powder, the material is melted through an electric arc furnace and air cooled. This creates a light weight, dense, high temperature resistant product. It is mostly used within high temperature furnaces and as insulation material or in the use of aggregate for high temperature refractory castables.  

Magnesium Oxide

Magnesium oxide nanoparticles are odorless and non-toxic. They possess high hardness, high purity and a high melting point. Magnesium oxide nanoparticles appear in a white powder form. Magnesium oxide nanoparticles are often applied in electronics, catalysis, ceramics, petrochemical products, coatings and several other industrial fields.

Rayon Fibres

These short cut ceramic and casting fibres provide excellent secondary reinforcement results for crack control, high temperature regulation, and increased impact resistance. For casting and ceramic industries, our fibres and flocks are perfect for ensuring the highest quality finish and performance.