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Glossary of Refractory Terms starting with alphabet C

 

REFRACTORY LINING TECHNOLOGY TERMS
[A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P[Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z]
Calcination
Heat treatment intended to produce physical or chemical changes in certain raw materials, preparatory to further processing or use for the purpose of eliminating volatile chemically combined constituents and producing volume changes.
Campaign
The working life of a furnace between major repairs.
Car deck
Refractory top of a car for the support of the ware in a tunnel kiln or truck chamber kiln.
Carbon refractory
A manufactured refractory comprised substantially or entirely of carbon (including graphite).
Carburettor
The refractory lined chamber of a water gas plant, often filled with checkers on which oil is sprayed for enrichment of the water gas.
Castable refractory
A mixture of refractory aggregate and suitable bonding agent (heat-resisting hydraulic cement) that, after the addition of a proper liquid, is generally poured into a place to form a refractory shape or structure which becomes rigid because of chemical action.
Casting slip
Generally a stable suspension of clay in water with or without inclusion of other materials. This term can also denote other stable suspensions, e.g. of alumina.
Catenary arch
A sprung arch which is part of a hollow cylinder having the shape of an inverted Catenary.


Center brick or Crown brick
Hollow refractory block which distributes molten steel from the trumpet assembly to the runner bricks.
Ceramic bond
The vitreous or crystalline material, formed on firing, between the coarser constituents of a ceramic body and giving cohesion and mechanical strength to the fired product.   
Cermet
A composite material containing both ceramic and metallic constituents.
Chamotte
Refractory clay that has been specially fired for use as a nonplastic material.
Chequer or Checker
Bricks or shapes set in such a way that the hot gases can pass between them; the filling of a regenerator chamber.   
Chrome-magnesia refractory
A refractory brick, which may be burned or unburned, made from a mixture of chrome ore and dead-burned Magnesite (the chrome ore predominating).
Chrome spinel
A spinel in which the trivalent metal is chromium, e.g. (Mg, Fe)O.Cr2O3
Cinder notch or Slag notch
A hole in the hearth wall which is opened to allow molten slag to flow from the furnace.
Circle brick
A brick, the two large faces of which are parts of concentric cylinders.
Clinker
(a) Fused or partially fused fuel ash which may contain some incompletely burned fuel. (b) Hydraulic cement before being crushed or ground. (c) a dead-burned product / usually stabilized dolomite. 
Closer or Soap
A brick of the same length as a standard square but of smaller thickness and/or breadth, with end faces square or nearly square. 
Cold crushing strength (CCS)
The ultimate load per unit area, at room temperature, that a refractory will withstand before it is crushed.
Cold set
The hardening or setting of a refractory mortar which takes place at room temperature. Bonding mortars containing agents which give them greater strength after drying than is obtained with a clay or other refractory base alone are said to be air-setting or cold-setting. 
Collar
A short fire clay section of a horizontal retort which is placed between the main silica portion and the mouth piece.
Compo
A refractory composition used in the casing pit for ramming purposes.
Cone (refractory)
Hollow refractory shape used in bottom pouring, through which the liquid steel passes from the runner brick into the ingot mould. When made in one piece with the runner brick, it is known as riser brick or an end runner
Congruent melting
The change of a substance, when heated from the solid form to a liquid of the same composition. The melting of ice is an example of congruent melting. 
Corbel
An arrangement of bricks in which each course projects beyond an adjacent course.
Course
A horizontal layer or row of bricks in a structure.
Crank
A composite refractory structure which supports and separates a number of pieces of flat-ware during glost and decorating fire.  
Crazing
A network of surface cracks.
Creep
Isothermal deformation of a stressed product as a function of time.
Cross wall
One of the brick partitions bracing horizontal retorts and arranged inside the setting.
Crown
A term sometimes used for a furnace roof.
Crown brick
See Bullhead.
Cupola brick
See Bullhead.
Curtain arch
Refractory arch supporting the wall placed between a gas producer and the gas uptake.
Curtain wall
A suspended horizontal structure, fixed or movable, which separates the combustion space of a flat glass furnace into two zones.


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