Professional Terms for Refractory Materials 3

Nov 08, 2023

051. dense shaped refractory product/dense refractory

Refractory products with a specific size having a true porosity (135) less than 45%.

052. Dolomite clinker doloma

Natural or synthetic magnesium and calcium carbonates or hydroxides are calcined to form a dense and uniform mixture of calcium oxide and magnesium oxide.

053. Dolomite refractory material doloma refractory

Refractory materials (108) using dolomite clinker (052) as the main raw material.

054. dry mix/dry vibratable refractory

Unshaped refractory materials (138) that can be constructed in a dry state using vibration (139) or ramming (105). Note: During construction, the dry mix can be demoulded before or after heating after reaching maximum density. This material may have a temporary bond added, but ultimately forms a ceramic bond (025).

055. Dry strength

Mechanical strength of unfired refractory material (108) after shaping and drying.

056. edge defect

The damage to the edges of shaped refractory products is expressed by the sum of the dimensions of the three sides.

057. erosion erosion

The surface of the refractory material (108) is corroded due to the mechanical action of the fluid substance, which may or may not contain solid materials.

058. Flashing fin

The portion of the thin layer that extends beyond the edge of a shaped refractory article.

059, fines

The fine particle part of the refractory material (108) ingredients.

060. Clay refractory fireclay refractory firebrick

Refractory materials (108) whose alumina content (mass fraction) is greater than or equal to 30% but less than 45% and has aluminosilicate (006) as the main component.


061. firing

Heat treatment that produces sintering (121) of shaped refractory products.

062. flint clay

It is a kind of barren raw material of natural high ridge stone with hard texture and shell-shaped fracture similar to flint.

063. forsterite

Natural magnesium orthosilicate with chemical composition suitable for use as refractory raw material.

064. forsterite refractory

Refractory materials (108) with forsterite as the main raw material and a magnesium oxide content (mass fraction) greater than 40%.

065. fused grain refractory

Refractory materials (108) made from pellets obtained by melting and solidifying as the main raw material.

066. granulometric class

The mesh size of the finest screen through which 95% of the bulk refractory material can pass.

067. green strength

The mechanical strength of the refractory product body that has not been dried after molding.

068. jet gunning

A construction method that uses compressed air or other mechanical means to project blasting materials (069) onto hot or cold surfaces.

069. gunning material

A mixture of refractory aggregate (003), fine powder (059) and binder (010) that can be constructed by spraying (068). Note: There are two types of spray materials: a) Refractory castable (109), delivered dry, used after adding water before or during spraying. b) Special refractory plastic (099) is generally delivered in a used state and is sprayed with special equipment under high-pressure air.

070, hairline crack hairline crack

The visible fine cracks on the surface of refractory products are less than or equal to 0.2 mm.

071. Heat setting jointing material/heat setting mortar

A joint material (077) that hardens when heated by chemical bonding (036) and/or ceramic bonding (025).

072. High aluminum refractory

Refractory materials (108) whose alumina content (mass fraction) is greater than or equal to 45% and whose main components are alumina and/or aluminosilicate (006).

073. Hydration tendency

The tendency of refractory materials or articles to combine with water in moist air or steam under controlled test conditions.

074. Hydration bond hydraulic bond

At normal temperature, a combination of solidification and hardening occurs through a chemical reaction between a certain fine powder and water (013).

075. injection mix

The unshaped refractory materials (138) for construction can be extruded by a pump with a pressure of 1MPa2MPa. Note: The pressed material can be used directly according to the delivery state, or can be used after mixing as required.

076. Insulating refractory

Refractory material (108) with low thermal conductivity (130) and low heat capacity. Note: Insulating refractory is a general term. There is a special definition for shaped products, see (117).

077, jointing material

Refractory materials used for masonry and bonding of refractory products by applying, grouting or impregnating methods (108). Note 1: These materials are a mixture of fine refractory aggregate (003), fine powder (059) and binder (010), delivered in dry or used condition. Note 2: See air-setting refractory mud (004) and thermosetting refractory mud (071).

078. lime refractory

Refractory materials with calcium oxide content (mass fraction) greater than or equal to 70% and magnesium oxide content (mass fraction) less than 30% (108).

079. Low aluminum clay refractory low aluminum fireclay refractory

The silica content (mass fraction) is less than 85%, the alumina content (mass fraction) is 10% to 30%, and it is a refractory material (108) composed of aluminosilicate (006) and silica.

080. Low cement castable/LCC

The calcium oxide content (mass fraction) brought by cement is between 1.0% and 2.5% of the deflocculated castable (050).

081. magnesia magnesia

It is a refractory grade magnesium oxide raw material in a dead burning (047) state obtained by calcining (019) natural or synthetic magnesia carbonate or magnesium hydroxide. Note: Natural magnesia carbonate is called magnesite.

082. magnesia carbon refractory

Refractory material (108) with carbon residue at 7% to 50% (mass fraction) and magnesia (081) as the main component.

083. magnesia chromite refractory

Refractory material (108) made of magnesia (081) and chromite (037) and with magnesia as the main component.

084. Magnesia doloma refractory magnesia doloma refractory

Refractory material (108) made of magnesia (081) and dolomite clinker (052) and with magnesia as the main component.

085. magnesia refractory

Refractory materials with magnesium oxide content (mass fraction) greater than 80% (108).

086. magnesia spinel refractory

It is a refractory material (108) mainly composed of magnesia (081) and spinel (124) with a magnesium oxide content (mass fraction) greater than or equal to 20%.

087. Medium cement castable/MCC

Anti-flocculation castable (050) with a calcium oxide content (mass fraction) brought in by cement greater than 2.5%.

088. Modulus of rupture

The maximum stress that a refractory material (108) strip specimen of a certain size can withstand on a three-point bending device.

089. Mouldable refractory ceramic fiber mouldable ceramic fiber/mouldable refratory ceramic fiber

The refractory ceramic fiber (026) material can be formed by adding inorganic and/or organic binders (010).

090. Neutral refractory

Refractory materials (108) that do not undergo significant chemical reactions with acidic refractory materials (002), alkaline refractory materials (009), acidic or alkaline slag (122) or fluxes at high temperatures.

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