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Unshaped Refractories

HYBRID Technology – Advance for Sol-Gel Bonded Refractory Concrete

Monolithic refractory castables can contain different bonding agents. The commonly used cement and silica sol binders have different advantages for their usage. The cement bonding with calcium aluminate cement is...

Evaluation of a Microsilica-Based Additives in Al2O3–MgO Refractory Castables

The first heating cycle of MgO-containing refractory castables is usually considered a challenge by the producers of such products due to the significant mass loss, associated with magnesium hydroxide decomposition...

High-Temperature Mechanical Characterisation of In-Situ Forming Spinel-Alumina Castables Using Magnesia or Magnesite as Raw Material

In this work, four alumina-magnesia, cement-bonded castables were tested at high temperature. Strength was determined by bending test at temperature ranging from room temperature to 1550 °C. As a reference,...

Alproof®: the New Family of Castables for the Aluminium Industry

With the hundreds of propri-etary formulations of own inven-tion in the catalogue, the com-pany believed that, over time, it was built up an offering broad enough to guarantee the best...

Engineering the Microstructural Parameters of Erosion Resistant High Alumina Castables

Different parameters (i.e., particle size distribution and packing, size and amount of coarse grains, and other features of the resulting microstructure) can affect the erosion resistance of refractory castables.

Re-engineered Calcium Aluminate Cement for Refractory Castables

The effect of Calcium Aluminate Cement (CAC) fineness and mineralogy on workability and high temperature performance of two commercial available CAC was investigated.

Advanced Anorthite Lightweight Castables for Carbon-Containing Atmosphere Application

Heat insulating refractories have been widely adopted owing to the low thermal conductivity that permit reducing heat losses through the lining of furnaces, to reduce a consumption of energy carriers...

Refractory Concrete Behaviour for Anchored Systems under Load Induced Thermal Strain

The complex behaviour of refractory under thermal load and process conditions poses many challenges for engineers. While the use of thermomechanical analysis assuming either linear elastic conditions or non-linear fracture...

High-Alumina Chemically Bonded Refractory Castables Containing Liquid or Powdered Binders

Phosphate-bonded refractories may be applied as repairing materials due to their fast setting time and good thermomechanical properties in the 30–1000 °C temperature range. Phosphoric acid and Monoaluminium Phosphate (MAP)...

Identification of Organic Admixtures in Cement Dry Mix Systems Using MDRS

Organic admixtures for industrial mortars and concretes, such as superplasticizers, retarders, or organic lubricants, are widely used to modify and control the processing properties of hydraulic bonded systems.