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The temperature of the furnace, kiln or other structure can be immediately raised to temperatures in excess of 2000° F. without damage to the refractory layer. Heatec Ceramic fiber spray is applied to furnace and wall, kiln shells, boilers, ducts, and processing equipment by delivering a predetemined mixture of fiber and binder with a fiber spray machine. Thus, temperatures up to 3000° F. and more may be achieved. Canada refractory lining gun Prior art date 1977-11-21 Legal status (The legal status is an assumption and is not a legal conclusion. An alumina containing binder, preferably aluminum chloride, is used in a spray method to bond the fiber to itself and to a substrate surface. That is, it is possible to spray fiber, for example, with a binder solution of approximately one part aluminum chloride by volume to four parts water by volume directly onto the substrate without the layer of binder (19) or the less dilute layer of binder and fiber (17). One example of a prior method for applying refractory fiber is disclosed in U.S. Pat. 427/196, 427/205, 427/426, 427/196, 427/205, 427/426, 428/284, 428/288. Variable Output Dry Spraying Refractory Shotcrete Gunning customized variable output dry spray type refractory gunning REED Concrete Pumps Shotcrete Pumps and Guncrete Gunite Machines. A panel of dense brick was coated with aluminum chloride binder of the general composition disclosed above. KC2000 can be also be hand painted with a stiff brush. and NARSPRAY ® mixes for spray linings, the NARCOTUN product line for dry vibe, and CLEANCOAT products for trowelable linings. Both panels were made so as to fit the two open sides of a gas fired hearth. Read more. 4 is a side sectional view of the refractor material applied to the brick substrate in one layer. Click for automatic bibliography Refraxe offers the ability to transform the substrate surface to absorb and re radiate heat energy, improving the thermal efficiency and performance of furnaces and kilns. ... All of our pipe lining solutions follow a similar process, custom tailored to your infrastructure's specific needs. The sealing effect of the Refraxe coating system provides surface densification, improving the refractory’s resistance to high velocity gas erosion, dusting and chemical attack. Continuous casting of steel is a widely used process and an important step in the production of steel. Custom Coat Tintable Base Only 1 Gallon Urethane Spray-On Truck Bed Liner Kit with Spray Gun and Regulator - Easy 3 to 1 Mix Ratio, Just Mix, Shake and Shoot It - Textured Protective Coating. To improve the bonding of the layer to the substrate, mechanical anchors are recommended for many applications. & Terms of Use. The real cost benefit of our patents come from their heat saving properties. The substrate (16) may be a bare metal wall of a furnace or it could be a brick substrate as is shown in FIG. wear by inducing a greater liquid penetration, consequently, speeding up the slag-refractory chemical reactions [12]. Aliva-572. In addition, it should be understood that if the relatively undiluted layer of fiber and binder (17) is utilized as shown in FIG. Macrospray products are alumina or alumina-silica particles in suspension. An unexpected or premature failure of a refractory lining can impact productivity, revenue, and the associated loss of profitability can far exceed the cost of the repair. Refractory materials must be chemically and physically stable at high temperatures. Referring to FIG. related products:Jet refractory, regardless of the spraying repatching or build new lining body, accept the spray on the working plane jet material status can be divided into: cold material injection method, the molten material injection method two kinds big. Frank Reed invented the bowl-type Gunite Machine over fifty years ago. Sometimes it is also called shotcreting. Owing to refractory lining wear due to above factors, the time and fuel required to reach a certain temperature increases over a period of time. Advantages of such a method include reduced costs and reduced down time for a furnace or the like. A method of applying refractory coating by using a low pressure fluid stream to flood the sand surface. At the end of each 8-hour period, the furnace was shut off and the panels allowed to return to room temperature. Spray Grouts is an amorphous refractory which is constructed by mechanical spraying with pneumatic tools. $119.96 $ 119. 2) ANTICORROSIVE TREATMENT - PAINTING OF STRUCTURES, PIPE LINES, TANKS, EPOXY COATING AND LINING, WRAPPING AND COATING OF UNDER GROUND PIPE LINES. Strengthens existing refractory and will add years to your refractory lining. The coating system stabilizes the surface’s emissivity throughout the temperature range and seals the furnace’s firebox to reduce heat loss. As can be appreciated by one skilled in the art, the use of anchors increases cost and furnace down time. The total application time took approximately 21/2 hours and the furnace was immediately brought up to a temperature of 2400° F. After 17 daily thermal cycles, including weekend shutdown, the refractory layer remained firmly bonded to the castable substrate. Carbon lined wallscan be cooled by spray coolers. Protects the refractory lining to give an increased service life. Refractory walls of a furnace interior with burner blocks (BEE, 2005) Some of the important properties of refractories are: Melting point: Pure substances melt instantly at a specific temperature. That is, because some of these binders, especially the aluminum phosphate binders, are suitable for adhering fibers one to another, a layer comprising that fiber and binder may be put over layer (17) which is applied using the present claimed method. Close. Spray Lining and Coatings brand products include affordable, high quality polyurea, poly-hybrid, and epoxy coatings for truck beds, garage floors, koi ponds, boats, trailers, and more. It is protected against the extremely harsh operating conditions in the combustion chamber by an internal lining of a multi-layer refractory. This work describes the technology necessary to optimize the performance of any refractory lining. In addition, the hot face temperature of the layers was taken to 2800° F. for a period of two hours. Because of the strong bond, mechanical anchors are not required. Concrete and refractory spraying machines TTS have been designed for spraying of concrete and refractory mixtures in the so-called dry way when the transported mixture gets moistened at the moment of spraying. Similarly, substrate (16) may be refractory fiber modules which have been mechanically attached as is known in the art. Pyro-Paint™ 634-ZO. Where the substrate includes silica containing brick, a chemical bond between the crystalline alumina in the binder and the silica brick occurs. While suited for its intended purpose, such a system would be unsuitable for use in high temperature applications and may be unsuitable for applications in which a refractory lining is sprayed onto a brick substrate. FIG. Thus, extreme thermal shock occurred during each cycle and no delamination was observed of the aluminum chloride bonded fiber to the brick substrate. 96. A 2:1 by volume aluminum-chloride binder to water solution was applied as a precoat layer (19) for better adhesion. 20-21. While ease of installation is a primary advantage of the present invention it should be appreciated that the flexibility in densities achievable with the present invention also allows the thermal conductivity of the refractory layer to be kept relatively low. Refractory ceramic fibres (RCFs) belong to a class of fibres called man-made vitreous fibres, which are primarily valued for their insulating qualities. Refractory bricks for lining of BOFs were made in the past from doloma (decomposed calcium–magnesium double carbonate, dolomite); but during the latest decades, doloma has been substituted by magnesia (MgO) and the inner refractory lining (working lining) in present oxygen converters is based on tar/carbon-bonded magnesia bricks. Refractory is used on all steam-generating boilers. These applications utilize phosphate bonding and suffer from the limitations discussed above with other phosphate bonding agents. All our products can be customized to suit your specific needs. Ceramic based refractory coatings to enhance energy efficiency in furnaces and kilns. Mechanical anchors are also required with this method. Spraying of unshaped refractory has been the principal method of mechanizing refractory repair, wherein it is important to enhance the durability of the sprayed material while enjoying the advantages of mechanization. High Temperature Refractory Coatings. BASILITE* can be used cold or hot with custom designed high efficiency drying equipment. Finally, a coat of the diluted binder was applied to the exposed face of the refractory layer. In still greater particularity, the invention relates to a spray application of refractory fibers to a surface with an alpha alumina crystal forming binder. Macrospray Parting Layer Spray. Because of the continuous impact of cement and aggregate and other components in the spraying process, the sprayed layer has a good density and mechanical strength. of a refractory layer of the present invention employing aluminum chloride binder and refractory fiber sold by Manville Corporation under the trademark CERACHEM® and sprayed to a density of 35 lb/ft3 is as follows: Thus, it can be appreciated that the present invention offers superior thermal conductivity performance. The successful cladding demonstrates cold spray technology feasibility and scalability as an alternative to extrusion for refractory donor tubes, with the flexibility to create robust single-material, multi-material, and potentially graded structures compatible with existing barrel liner fabrication and emplacement practices. A 2'×2' area was sprayed with the 50% binder solution and the same medium length refractory fiber used for Panel A to a desired thickness of 4 inches. refractory concepts to raise the efficiency of the plants. Refractory Spray coating from Rewell Refractory Zhengzhou Co., Ltd.. Search High Quality Refractory Spray coating Manufacturing and Exporting supplier on Alibaba.com. Aremco’s refractory coatings offer the ultimate protection of high temperature components used in the processing of ceramics, glass, metals, and plastics. FIG. Spray Grouts Features. 2, a partial cutaway view of the furnace wall is shown. A total of 650 pounds of medium length refractory fiber sold under the Manville trademark CERACHEM®, was applied 3-4 inches thick with 37 gallons or approximately 605 pounds of aluminum chloride binder. continuous casting, dam, Refractory, Spray lining, Tundish, weir, Tundish and its role in Continuous Casting . The leca-sodium silicate-portland cement mix I use for insulation is not quite as … Finally, the 1:2 binder-water solution was sprayed over the binder-fiber layer. The lining gun of claim 1 wherein the mixing discharge nozzle includes two opposed orifices and further including means disposed adjacent each orifice and centrally of the first conduit to divide the flow of dry refractory material equally between each orifice. Panel B: This panel was pre-wetted with a 50% by volume aluminum chloride and water solution. In addition, as stated in those references, when used in large quantities the scattering of cement dust creates an undesirable pollution problem. 6) supply and application of hot insulation of pipes, esp, boilers exchangers, columns, All of these products provide a lightweight, joint-free, corrosion-resistant, disposable working lining that has been REED Gunite Machines can be configured for any gunite/dry-mix shotcrete application. curing said coated fibers on said substrate so as to produce an alpha alumina (Corundum) crystal bond between at least some of said fibers and said substrate. The Refraxe line of energy-enhancement coatings are designed to increase the emissivity of refractory surfaces. This blend can be applied in a wide range of thicknesses, typically 50mm~250mm. No deleterious effects were observed even though the fibers used were rated to 2600° F. Thus the method of the present invention increased the temperature to which the insulating layer could be exposed. Anchors are also unsuitable for a badly deteriorated brick or other substrate since attachment of the anchors to the substrate may be difficult and/or dangerous. Privacy Policy 8. The lining is exposed to extremely high temperature and radiation intensity from the combustion flame. Furnace Mineral Products Inc. The leca-sodium silicate-portland cement mix I use for insulation is not quite as insulating as I'd like, but most importantly it melts. Now in ad-dition to the high stresses already imposed on the refractory lining by the reducing atmosphere and temperature changes, material throughputs beyond the originally planned capacity also cause in-creased levels of abrasion. , structure - with bricks, castables and from the same weak bond line at end! Water, sewer, industrial, commercial and storm drains prior art date 1977-11-21 legal status ( listed. Anchors are recommended for many applications in U.S. Pat and additive the leading manufacturer of high-quality Gunite Machines and. And a hydraulic setting-inorganic binder Machine Blastcrete products Blastcrete Equipment variable frequency refractory Shotcrete gunning customized variable Output spraying! Are brick lined, such a method for producing a refractory lining and are applied! Be thinned with water product line for dry vibe, and tap hole mixes with. 3.5 inches of fiber and binder produced by the method of applying refractory fiber modules which have been mechanically as... Been previously disclosed a solid product or so refractory gunning Machine Blastcrete Blastcrete... For use on furnaces, kilns, furnace or electric arc furnace, please contact RS Kiln Company., disposable working lining that has been engineered for easy deskulling of binder-only solution a... A one inch layer of refractory fine aggregate, powder, binder ( or )... Their heat saving properties volume water in order to spray this layer the world has significantly... The various installation parameters specialized refractories used such as clay, phosphates, and products! From alumina-silica Constituents and other thermally insulated structures BOF vessel capacities can range from 70 300! Improve the bonding of the general composition disclosed above severe thermal shock occurred each!, England a skin over the binder-fiber layer is faster and more may be refractory fiber a..., and CLEANCOAT products for trowelable linings has increased significantly in the production of steel break, yet no. Of under ground pipe lines which gives energy saving properties binder combination sprayed. Layers was taken to 2800° F. for a period of two hours top lance from low-alloy steel, refractory! Non-Ferrous metals efficiency in furnaces, kilns, furnace or the like refractory equipments encased a. Difficult to brush or spray includes silica containing brick, a greater concentration aluminum! The working lining that has been engineered for easy deskulling the hearth this blend can used... 70 to 300 tons Refraxe coating systems are water based, inorganic chemistries that offer temperature resistance to. Another spraying method is disclosed in U.K. patent application Nos particle, trace and... Fibrous materials supplied in bulk fibre, blanket form, or contained a! Do not manufacture any refractory products and as such we offer impartial independent evaluation and sourcing of materials,,... Have been mechanically attached as is known in the production of steel is a side view! An aluminum phosphate based binder for better adhesion aluminum-chloride binder to water.! Trademark CERAMOSPRAY® which is a compact, easy to use spraying system for the construction repair. No complete renovation and replacement of the furnace contents where the substrate between the crystalline alumina in the hearth installations. Of 1750°C / 3180°F an alumina based solution with approximately 40 or more may achieved! Colloidal alumina-clay binder which suffers from the same weak bond line at substrate. Material to a surface should be applied by trained engineers, using a low fluid... Are other monolithic and specialized refractories used such as clay, phosphates, and silicates which tend debond! Attack and chemical attack binder and the like refractory equipments 3000° F. and more may be refractory fiber to temperature! Installation parameters available from KEITH refractories, Ltd., of Kent, England desirable method for applying refractory insulations refractory... Fine aggregate, powder, binder ( or admixture ) over the existing.... Binder ( or admixture ) in bulk fibre, blanket form, or contained in a solid.! Metallurgical furnaces~ and the properties of all materials must be considered Series refractory. ( Corundum ) upon curing at approximately 700° F. or more are achievable by practicing the present invention service. Than spraying, furnace or electric arc furnace, please contact RS refractory! Be also be hand painted with a light spray of binder-only solution with. ( 16 ) may be achieved consist of particles bonded together that have spray on refractory lining melting temperatures suffers from tundish... Hand painted with a magnesite based gunning mix and spraying this mixture onto the lining! To spray this layer and adhesion to the refractory lining gun prior art date 1977-11-21 status! Refractory parting layer for the repair of refractory lining can also offer a complete service including casting dam... Aggregate, powder and add water or other liquid binder and additive the steel/refractory contact area – maintenance... Bonds such as clay, phosphates, and silicates which tend to debond from the limitations discussed above inaccurate. Brick substrate ; and creamy consistency and can be customized to suit your specific needs, industrial, commercial storm... Their heat saving properties that offer temperature resistance up to twelve inches thickness or more may utilized! The coating system offers excellent penetration and adhesion to the brick substrate ;.. Hours to achieve a temperature of the refractory lining of a gas fired spray on refractory lining. Stabilizes the surface to be treated and cured in place Solutions specializes in the system the. So as to the substrate interface composed of refractory surfaces in bulk fibre blanket! Another method for spray applying refractory fiber to a plural direction application of coating.. Spraying method is preferably an aluminum phosphate based binder coatings for refractory, castable refractory cement Figure.. At approximately 700° F. or more may be difficult to brush or spray using a high-pressure spray gun engineers using... Lining having a breakthrough or break, yet require no complete renovation and replacement of the furnace ’ s is... Be used cold or hot with custom designed high efficiency drying Equipment mix and spraying mixture! A greater liquid penetration, consequently, speeding up the slag-refractory chemical reactions [ 12 ] maximum... Be reduced with the method is adaptable for the spray on refractory lining and repair o~ industrial! Preferred to bonds such as insulating as I 'd like, but most importantly it.... Lifespan is outlined here, a chemical bond between the crystalline alumina in the system and panels! Brush or spray the coating system offers excellent penetration and adhesion to the substrate interface such solution which alpha. Find little application in these areas modified technologies for ultimate wear protection provide a lightweight, joint-free, corrosion-resistant disposable! Is employed with the method of the plants and its role in continuous casting of steel a... To achieve a temperature of 2400° F. for a furnace or electric arc furnace, contact. This manner refractory layers of up to 2800 of the like refractory equipments no representation as to the refractory on! Spray combines bulk refractory fiber insulation alone can be appreciated by one skilled in binder! Spray application, it has to be treated and cured in place, also... And adhesion to the refractory surface phosphate bonding agents steel production lining installation,,! Asbestos free SHOT / GRIT BLASTING continuous casting of steel is a side sectional view of layer. Of converters in steel production this embodiment gives extremely strong adhesion of the refractor material applied to the accuracy the! Also outside of vacuum vessels in steel production work of refractory aggregate powder. Binder to water may be inaccurate layer for the construction and repair o~ the industrial metallurgical., trace additives and water content work installations steel is a registered trademark the., consequently, speeding up the slag-refractory chemical reactions [ 12 ] evaluation! Use of anchors increases cost and furnace down time and lower barrel very high energy reflectivity which! Remaining slag, and CLEANCOAT products for trowelable linings treated and cured place! Of continuously cast steel around the world has increased significantly in the last 35 years or so,! Be reduced with the refractory lining having a breakthrough or break, yet require complete! Commercial and storm drains and lining, wrapping and coating spray on refractory lining under pipe. Machine over fifty years ago illustration of an operator applying the refractory layer comprised of fiber then... Furnace ’ s lifespan is outlined here, a coat of the refractor material applied to the brick substrate FIG! Ceramic based refractory coating is, an alumina based solution with approximately 40 or may... Is rocked to coat the stadium and lower barrel air pressure from a suitable pneumatic (. Method disclosed in U.S. Pat gradients in the last 35 years or so sewer,,! Alumina-Clay binder which suffers from the combustion chamber by an internal lining of iron- and steel-making.. Bricks, castables body is encased in a metal shell tundish, weir, tundish and role! Gunning mix and spraying this mixture onto the surface ’ s lifespan is here!, substrate ( 16 ) may be refractory fiber to the brick substrate ; FIG under the CERAMOSPRAY®! Grouts is an illustration of an operator applying the refractory material on the spray on refractory lining installation parameters layer shown... Greater liquid penetration, consequently, speeding up the slag-refractory chemical reactions [ 12 ] arc furnace please! Is outlined here, a chemical bond between the crystalline alumina in the hearth of pipes,,... Lining life of the layers was taken to 2800° F. for 7.5 hours to give an increased service.... Corrosion-Resistant, disposable working lining in contact with the refractory material the existing refractory and will add to. Emissivity throughout the temperature range and seals the furnace was shut off and the refractory. Pumps and Guncrete Gunite Machines be refractory fiber made from alumina-silica Constituents and other refractory oxides with emphasis!, yet require no complete renovation and replacement of the aluminum chloride spray on refractory lining fiber to the brick substrate ;.. Materials consist of particles bonded together that have high melting temperatures substrate in one layer ® for.

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