curing and dryout of refractories

Cement Plant Refractories

Monolithic Refractories in the Cement Clinker Cooler and Preheater. Monolithic refractories (Castable Refractories) especially castables and basic gunning mixes are widely used in preheater towers and coolers in North America.Advantages of monolithic refractories include ease of application especially for complex geometries ready availability improved time for installation and good

Refractory Dry Out Gulf Coast Combustion

The key to a long refractory life is a dryout using GCC s High Velocity Gas Combustion Systems. With Gulf Coast Combustion s refractory dry out knowledge and expertise you and your clients will get a long-lasting life on your refractory.

HARBISON-WALKER Handbook of Refractory Practice 2005

 · American Refractories Company (NARCO) and Harbison-Walker at the time naming the resulting organi-zation RHI Refractories America. Today the U.S. and export operations have been reorganized and operate independently under the name ANH Refractories. Because of the strong reputations that Harbison-Walker and NARCO established over their

Refractory lining systemsScienceDirect

 · Hex mesh is an arrangement of strands of metal to form hexagonal cells in a monolithic anchoring system. Hex mesh is typically used with thin 3/4 to 1 in. (19–25 mm) erosion-resistant lining such as cyclones hot-wall risers sugar scoops and other hot-wall lining systems with severe erosion.The hex mesh anchoring system in conjunction with extreme erosion-resistant castable

Drying Refractory in Steam-Generating BoilersInsulation

Dry out must not be confused with curing which is the process of keeping the refractory material wet or the surrounding atmosphere humid for 24 hours prior to applying heat for drying. This curing process is required on all cement-bonded refractory to create the most favorable conditions to complete the chemical reactions of the cement and water.

Sparfire Dryout HeatupSPAR Inc. is now a part of Calderys

 · REFRACTORIES FAX (256) P.O. BOX 909 JACKSONVILLE AL 36265 HEATING SCHEDULE FOR DENSE SPARFIRE PRODUCTS After installation allow to cure at ambient temperature for a minimum of 4 hours or until castable sets up. Ambient temperature should be 50°F to 90°F. If possible allow the

Alkaline Hydrolysis Resistant and Durable Refractory

 · Dryout procedures only delay the Alkaline Hydrolysis Reaction they do not eliminate the potential reactions nestled in the matrix of the insulating castables. However experience proves that too often the risk and costs of alkaline hydrolysis and related downtime is significant to Owners even with dryout.

Refractory lining systemsScienceDirect

 · Hex mesh is an arrangement of strands of metal to form hexagonal cells in a monolithic anchoring system. Hex mesh is typically used with thin 3/4 to 1 in. (19–25 mm) erosion-resistant lining such as cyclones hot-wall risers sugar scoops and other hot-wall lining systems with severe erosion.The hex mesh anchoring system in conjunction with extreme erosion-resistant castable

Secondary Reformer Refractory Dry Out Operation

 · refractories as water is the common solvent for mixing refractory material. This article covers problems faced during drying out operation is described present information to better explain when there is a need for a refractory dryout and the critical aspects. The changes in temperature can have catastrophic effects on refractory systems.

Secondary Reformer Refractory Dry Out Operation

 · refractories as water is the common solvent for mixing refractory material. This article covers problems faced during drying out operation is described present information to better explain when there is a need for a refractory dryout and the critical aspects. The changes in temperature can have catastrophic effects on refractory systems.

The Boiler Dry Out Process Refractory Materials TFL Global

 · The refractory manufacturer will know the correct refractory placement and curing temperatures for the dry out process. 2) Comprehend the Thermal Profiles. Various temperatures can have extreme effects on refractory systems. While water boils at 212°F chemically combined water boils at different temperatures depending on the composition.

Explosive Spalling of Low Cement Castable Refractories

 · dryout without further explosive spalling taking place. At that point the temperature ramp rate was down to 3°F / hr. Refractory manufacturers typically provide the end user of their products with a time / temperature curve for dryout of their products. Such dryout curves are generally developed under controlled laboratory conditions and tend

Dryout of Refractory Lining / Heat Treatment Hotwork

Rapid heating and local hot spots creating stresses which cause severe cracking or worth damages. In most industries it has become widely accepted the only truly effective means of drying out and heating up refractory is to deploy high velocity burners. With over 250 high velocity burner units worldwide Hotwork International is the best

Magnesia refractory dryout–managing

 · lation and preheating (dryout specifically) stages are high risk stages4. During the installation and preheating stages the brick undergoes several changes20. Curing is the formation of hydraulic bonds. Curing follows the placement of the material and is limited to wet installations of magnesia refractory bricks.

Curing and Dryout of RefractoriesHarbisonWalker

Magnesia refractory dryout–managing

 · lation and preheating (dryout specifically) stages are high risk stages4. During the installation and preheating stages the brick undergoes several changes20. Curing is the formation of hydraulic bonds. Curing follows the placement of the material and is limited to wet installations of magnesia refractory bricks.

Explosive Spalling of Low Cement Castable Refractories

 · dryout without further explosive spalling taking place. At that point the temperature ramp rate was down to 3°F / hr. Refractory manufacturers typically provide the end user of their products with a time / temperature curve for dryout of their products. Such dryout curves are generally developed under controlled laboratory conditions and tend

Important Considerations for Refractory Dryouts Startups

 · Refractory dryout is the controlled process of applying heat to a refractory lining to remove water from the lining system without causing damage to the refractory materials. Whenever linings are heated up from ambient temperatures whether it be the initial heatup after a new lining installation or a subsequent heatup of an existing lining after an outage heatup procedures ramp rates and hold

Sparfire Dryout HeatupSPAR Inc. is now a part of Calderys

 · REFRACTORIES FAX (256) P.O. BOX 909 JACKSONVILLE AL 36265 HEATING SCHEDULE FOR DENSE SPARFIRE PRODUCTS After installation allow to cure at ambient temperature for a minimum of 4 hours or until castable sets up. Ambient temperature should be 50°F to 90°F. If possible allow the

Sparfire Dryout HeatupSPAR Inc. is now a part of Calderys

 · REFRACTORIES FAX (256) P.O. BOX 909 JACKSONVILLE AL 36265 HEATING SCHEDULE FOR DENSE SPARFIRE PRODUCTS After installation allow to cure at ambient temperature for a minimum of 4 hours or until castable sets up. Ambient temperature should be 50°F to 90°F. If possible allow the

HARBISON-WALKER Handbook of Refractory Practice 2005

 · American Refractories Company (NARCO) and Harbison-Walker at the time naming the resulting organi-zation RHI Refractories America. Today the U.S. and export operations have been reorganized and operate independently under the name ANH Refractories. Because of the strong reputations that Harbison-Walker and NARCO established over their

The Boiler Dry Out Process Refractory Materials TFL Global

 · The refractory manufacturer will know the correct refractory placement and curing temperatures for the dry out process. 2) Comprehend the Thermal Profiles. Various temperatures can have extreme effects on refractory systems. While water boils at 212°F chemically combined water boils at different temperatures depending on the composition.

API TR 980 Monolithic Refractories Installation and Dryout

In addition it discusses the need for curing and dryout and procedures to achieve successful results. This instruction is consistent with API Standard 936 which is the HPI industry standard for the installation quality control of monolithic refractories.

Refractory Liningan overview ScienceDirect Topics

 · In Smithells Metals Reference Book (Eighth Edition) 2004. 27.8 Design of refractory linings. A refractory lining usually comprises a safety or backup layer behind the working lining in contact with the furnace contents. The whole body is encased in a metal shell. The temperature gradients in the system and the properties of all materials must be considered.

Understanding Refractory Failure—A New Perspective

Curing allows the chemical action to take place inside the refractory and helps ensure that the refractory can reach its maximum strength when properly dried. It is recommended that the surface of the refractory be kept moist (curing compound wet canvas bags or spraying water) or the surrounding atmosphere humid for a period of at least

REFRACTORY DRYOUT April 23 2002

 · 3. FORMSForms and particularly wooden forms must be removed before dryout. The thought process is to leave forms installed to hold the refractory in place until an elevated temperature is reached. Most forms are tightly spaced and tend to cover or insulate the hotface during the initial critical stage of the dryout at low temperatures.

Boiler Refractory Dryout

 · Boiler Refractory Dryout (Courtesy of Rentech Boiler Systems). Refractory Dry-Out Procedure. The refractory material was not normally thermally cured at the factory. It is not uncommon for moisture to be absorbed by the refractory during final stages of in-shop fabrication transit to the job site and before the upstream combustion products are first passed through the unit.

Points to Remember When Using Castablessparref

 · the temperature at that level until all steam dissipates. Heat will remove the free water as steam at around 212oF while the water of hydration will be driven off between 400oF and 1600oF. Hold temperatures at 400oF to 450oF and again at 1000oF to 1100oF for as many hours as inches thick of the cast piece. AVOID DIRECT FLAME IMPINGEMENT ON REFRACTORY

Sparfire Dryout HeatupSPAR Inc. is now a part of Calderys

 · REFRACTORIES FAX (256) P.O. BOX 909 JACKSONVILLE AL 36265 HEATING SCHEDULE FOR DENSE SPARFIRE PRODUCTS After installation allow to cure at ambient temperature for a minimum of 4 hours or until castable sets up. Ambient temperature should be 50°F to 90°F. If possible allow the