Refractory aggregates are refractory materials that play a role as a framework in the particle size composition of refractory materials. They are made of various refractory raw materials through calcination, crushing processing or artificial synthesis, with a particle size greater than O. 088mm granular material. Aggregate is the main material ...

"methods for producing a composition, comprising the steps of: coating a binder for coating on a surface of a refractory aggregate to prepare a coated refractory aggregate; and compounding and mixing a binder for binding with said coated refractory aggregate, wherein said binder for coating is an uncured thermoset resin with thermosetting

The present invention provides for a refractory aggregate composition comprising an improved calcium aluminate clinker having the formula CnAx wherein C is calcium oxide and A is aluminum oxide, wherein n is an integer from about 1 to about 12, wherein x is an integer from about 1 to about 24, and wherein said clinker has from zero to less than about fifty weight percent C12A7, and …

The high-chrome refractory for post-mortem analysis was acquired from the side wall under the burner plane of an entrained-flow gasifier in Xinjiang, China ().It had serviced over 6000 h at approximately 1350 °C, 6.5 MPa, and reducing atmosphere [].The refractory brick was sectioned into samples with approximate width of 10 mm and thickness of 5 mm along the direction of slag penetration.

A method for improving the insulating character/and or penetration resistance of a surface comprising lining a surface of a lime kiln, a cement kiln, a roasting kiln, a thermal oxidizer, or a fluidized bed reactor that is subject to wear by an alkali environment and/or an alkaline environment with a refractory composition comprising a refractory aggregate consisting essentially of a calcium ...

The second composition includes a resin-bonded refractory composition comprising a refractory aggregate and a reactive metal. The resin-bonded refractory composition reduces deposition of inclusions relative to standard carbon-bonded or castable refractories. The second composition is particularly effective as a nose of a stopper rod or a liner ...

An essentially non-slumping sprayable refractory castable composition that is applied without forms is disclosed comprising (a) a tempered, pumpable first component comprising (i) one hundred weight percent of a refractory composition comprising from about 60 to 90 weight percent of a refractory aggregate, from about 2 to 25 weight percent of an ultrafine refractory material having an average

Refractories for Byproduct Coke Oven Batteries. A coke oven battery (COB) is basically a structure made of different varieties of refractory bricks and shapes held together by a steel framework. The battery is designed to operate at maximum temperatures up to 1450 deg C though it is constructed at ambient temperature.

uid (comprising 8 wt% MgO, 23 wt% SiO 2, 21 wt% CaO and. 48 wt% Al 2 O 3), ... Nevertheless, as the refractory aggregates comprise mostly of a castable formulation, it is also important to ...

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. Refractory monolithic batch consisting essentially of at least one refractory aggregate, a cementatious material and about 0.05 to 2.0% of a hydrocolloid based on the total weight of the batch, said hydrocolloid comprising an organic polymer capable of absorbing substantially at ...

A refractory mix for forming high strength, low thermal conductivity refractory shapes comprising from about 40 to 75% by weight of at least one dense refractory aggregate, about 10 to 30% by weight of a bonding agent, and about 5 to 25% by weight of hollow ceramic microspheres having a diameter of about 1 to 350 microns.

The refractory aggregate may be selected from the group consisting of brown fused alumina, bauxite, clay, silica sand, silica, fumed silica, silicon carbide, and combinations thereof. The refractory aggregate may be present in the total formulation of liquids and solids in an amount in the range from and including 5 wt % to and including 90%.

Weblio > ・ > refractory cementの・ > refractory cementにした の 「カテゴリ」「」をしてのがになりました。

Geopolymer-lightweight aggregate refractory concrete (GLARC) was prepared with geopolymer and lightweight aggregate. The mechanical property and heat …

A method of obtaining refractory material (filler) on the basis of CA 6 comprising preparing a raw material mixture through the fine grinding of alumina and calcium-containing components in the stoichiometric ratio corresponding to CA 6 and sintering additives, wetting the above-mentioned mixture with subsequent granulation, drying the pellets ...

Ultralite Graded Aggregate (UGA) Ultralite Graded Aggregate (UGA) is supplied to customers who prefer to utilise Ultralite as a lightweight refractory aggregate to manufacture their own refractory shapes. Ultralite Graded Aggregate (UGA) is the graded version of Mantec's Ultralite Loose Fill (ULF) insulation material and is available in two main grades with maximum service temperatures ...

Frontiers in Bioenergy and Biofuels 460. It is stated [11] that refractory materials, suitable for use in biofuel boilers installations, should. be dense (>2200 kg/m 3 ), with CCS of at least 50 ...

1. A method of preparing hydrophobic aggregates for use in refractory castables, comprising: (a) crushing insulating fire brick (IFB) to a desired particle size to form an aggregate; (b) coating the aggregate with a hydrophobic component; and …

The method of producing the refractory material, which comprises preparation of a compound by mixing of a refractory aggregate with an inorganic binder, ... comprising an organic binder, particles of the base material, and a metal solution. 10.

The method for wet-gunning a castable refractory composition includes the steps of (a) preparing a cement-free, castable refractory composition comprising 70-98 weight % of refractory aggregate having a particle size of 10 mm or less, 2-30 weight % of ultrafine refractory powder having a particle size of 10 μm or less, and 0.01-1.0 weight % (outer percentage) of a dispersing agent, and ...

A dry refractory composition, comprising: an insulating refractory composition consisting essentially of a matrix material comprising fireclay having a particle size of minus 100 mesh in an amount of 1.0 volume percent; a dense refractory aggregate comprising a sillimanite group mineral having a particle size of minus 35 mesh in an amount of 4 ...

A.R. Horrocks, in Handbook of Technical Textiles (Second Edition), 2016 8.6.2 Silica-based fibres. The silica-based fibres are typified by Quartzel® (Saint-Gobain, France), which while having slightly inferior fire and heat performance to alumina-based fibres (see Table 8.5), are available as continuous filament yarns, rovings, and chopped strands (each comprising 9 or 14 μm diameter ...

Disclosed is a composition that is for refractory brick and that combines a binding agent for binding and a coated refractory aggregate prepared by coating the surface of a refractory aggregate with a coating layer comprising a binding agent for coating.

A refractory composition for use in contact with molten aluminum and molten aluminum alloys containing a refractory aggregate, a binder, and a treatment additive comprising a source of Sr. Methods comprising contacting a refractory composition with the Sr source to improve the resistance of the refractory to molten aluminum attack are also disclosed.

Lightweight Refractory Aggregate Supplier. Lightweight refractory aggregates takes a big part as a composition of refractory materials. In this field, Rongsheng Kiln Refractory Co, Ltd takes a leading part. Rongsheng is a professional refractory material manufacturer and supplier which possesses complete producing line and advanced technology.

The present invention provides for a refractory aggregate composition comprising an improved calcium aluminate clinker having the formula C n A x wherein C is calcium oxide and A is aluminum oxide, wherein n is an integer from about 1 to about 12, wherein x is an integer from about 1 to about 24, and wherein said clinker has less less than about fifty weight percent C 12 A 7.

The pores in the refractory aggregates form the second phase and the fracture toughness K IC was reduced rapidly by high porosity. So lightweight alumina was more likely to crack and expand due to the high porosity when subjected to the equivalent stresses generated by the formation of magnesium aluminate spinel. In consequence, the lightweight ...

Because of the presences of the large amount of impu- and mechanical tests results of refractory brick and ramming mix rities such as CaO and SiO2 in grain boundaries, these regions are samples containing recycled aggregates showed that the addition suitable places for slag attack and have low slag corrosion resis- of up to 30 wt.% of recycled ...

Mostly, normal refractory brick created of natural fire clay is as good as acid brick, but if additional acid resistance is required then an additional amount of silica is added to on fire clay which may range up to 97% of its composition.. For binding bases, 1 to 2% lime may be added on.Acid bricks are burnt at large temperatures for lengthy periods.. 2. Ordinary Refractory Brick

As it can be seen, present phases in the alumina–spinel refractory castables contains alumina tabular and spinel aggregate that linked together by refractory castable matrix. The matrix of these refractory castables comprising of calcium aluminate cement hydrates with reactive alumina together with fine grains of spinel.

Refractory compositions comprising a non-basic aggregate, a calcium aluminate binder, and a dispersant for the binder are known and it is further known that the hot strengths of refractory products made from such refractory compositions are in many cases not as high as may be desired.

Refractory aggregate is a kind of refractory pellet which is the composition of refractory material. It is made of various refractory materials which is sintered, broken and process. The granularity is usually over 0.088mm. As the main material in the …

The aggregate is the major portion of a refractory concrete, usually comprising approximately 75% of the mixture. The high temperature aggregates are held together by a bond capable of giving a solid mass which has adequate properties both before and after firing to a high temperature. Aggregate purity is an important parameter of

Abstract: The present invention provides for a refractory aggregate composition comprising an improved calcium aluminate clinker having the formula CnAx wherein C is calcium oxide and A is aluminum oxide, wherein n is an integer from about 1 to about 12, wherein x is an integer from about 1 to about 24, and wherein said clinker has from zero to less than about fifty weight percent …