Calcium silicate board

Class 1 can be achieved by bonding to a non-combustible substrate such as calcium silicate board on this basis maritime authorities such as the Department of Transport and Lloyd s Register of Shipping have approved S laminates for applications such as the cladding of bulkheads in ships. 

Calcium silicate - board 29.4 High-temperature dry injection... 

Autoclaved calcium silicate board products, reinforced with cellulose fibres, have been developed as substitutes for asbestos. BS 3958 Pt 2 specifies the properties and dimensions of preformed calcium silicate insulation suitable for use up to 650 C and 950°C. 

The bottom heat insulatitHi layer of reduction cells is composed of diatomaceous (moler) bricks, vermiculite slabs, perlite bricks, and calcium silicate boards. To smooth the surface of the bottom of the steel cradles, sometimes people use fireclay grit (grain). 

At preheating and during startup of the reduction cell, calcium silicate boards lose physical water and chemically bonded water (in total, up to 10 %), and the burning out and degradation of organic bbers take place. 

The range of heat insulation materials is rather broad. Heat insulation materials that can withstand relatively high mechanical loads - this list includes lightweight fireclay bricks, vermiculite slabs, perlite bricks, calcium silicate boards, and diatomaceous bricks - are used for the heat insulation of the bottom. The pressure on the walls is lower, so it is possible to use fiber-based boards (in addition to the above-mentioned materials). Sometimes lightweight castables with fillers, such as lightweight fireclay, vermiculite, and fiber, are also used for heat insulation. 

The calcium silicates have a number of uses in industry. Among the most important applications are their uses in building materials, such as some types of glass and cement (especially Portland cement), bricks and tiles for roofs, fireproof ceilings, and building boards. The compound is also... 

Calcium silicate wall-board is produced from cellulose fibre, calcium silicate-forming materials (e.g., hydrated lime, silica and cement) and fire protective fillers. 

Calcium silicate heat insulation material is a synthetic material produced from silica (rebned diatomaceous ore or milled silica sand) and of calcium oxide (high-quality calcium carbonate chalk or lime) with the addition of organic bbers (in order to keep shape after pressing). Pulp sluny from the mixer is squeezed out, pressed, and after exposure at air placed in the autoclave with steam pressure about 10 atm and temperature 120-130 °C. The synthesis of xonolite [207] mineral takes place at the above-menti(Mied crHiditimis, and actually it is the end of the technological process. The dimensiOTis of calcium sibcate boards may be up to 2,500 mm x 1,500 mm. 

S. Harper, Developing Asbestos Free Calcium Silicate Building Boards , Composites. 13,1982,123 138. 

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