Supply of electricity industry circulating fluidized bed boiler dedicated high-strength wear-resistant corundum castable

 A detailed description, a construction preparation, compulsory mixer or a mortar mixer. 2, welding one or two units. 3, the plastic film. 4, plus fill joints, plastic corrugated board, wood strips, fiber blankets. 5, a small scale. 6, a volume of 10 to 40 liters of a plurality of buckets. 7, a number of the trowel. 8, tamping tool. 9, in line with the size and number of drawings, anchoring nails from the corresponding material. 10, handsaw, scissors, iron milling and other sporadic tools. 11, raw material preparation. Castable refractory fiber (dry material) have been prepared in good production plant, with woven bag with plastic lining, a small bag and another bag individually packaged composite hardener. Before the construction of the material transported to the site, classified storage, safekeeping, to prevent bags or damaged, damp and rain. 12, remove slag furnace shell inside the steel surface, rust, loose mill scale and oil. 13. Construction ambient temperature should be ≥10 ℃ (ideal ambient temperature of ≥20 ℃), measures should be rain rainy season, winter construction to take precautionary measures. Second, anchoring nails welded one, anchoring nails four weeks should be fully welded, no bite of meat, welding firm should not be tainted welding and Weld. 2, anchoring nails vertical deviation should ≤5mm, height deviation of ± 2mm, pitch deviation of ± 5mm. Anchor bolt square layout. Anchor bolt spacing: furnace wall is 250-300mm, the roof is 200-250mm, shaped structure parts for 150-200mm. 4 different operating temperatures anchoring nails choice of materials listed in the table working temperature (℃) selection of materials ≤550 550-1000 1Cr18Ni9Ti 1000-1250 Cr25Ni20Si2 1250-1400 carbon steel and heat-resistant ceramic composite anchoring device ※ castable refractory fiber lining The anchoring nails completely covered, the actual temperature of the hot end of the anchor nail on the table listed below the operating temperature. 5, in the form of the structure is shown in anchoring anchoring nails to nail a nail anchor 4. 6, anchoring nails two points short nails and spikes, white layout. Castable refractory fiber lining after construction will be anchoring nails completely covered. Anchoring nails in the lining of the arrangement and thickness of the cover as shown below. Third, castable refractory fiber kneading 1, the preparation of a good dry material added to the mixer, start the motor during operation in a blender slowly added to the composite hardener, dry mixing 0.5-1 minutes. 2, dry mix well, add a predetermined amount of water, stir 2-3 minutes to use the material. Different density of castable refractory fiber add water amount listed in the following table. To add water metering, control and accurate. Castable refractory fiber density and add water amount 0.65g / cm3 (650kg / m3) dry material weight 100-120% 0.70g / cm3 (700kg / m3) dry material weight 80-90% 0.80g / cm3 (800kg / m3 ) dry material weight 65-75% 1.0g / cm3 (1000kg / m3) dry material weight 55-60% 1.2g / cm3 (1200kg / m3) 55-60% by weight of the dry material 3, the mix should be 20 within minutes run out, the interval is too long to prevent the occurrence of induration material impact of the project quality. Fourth, the construction method of construction methods are casting three projection method and smear method. 1, cast construction methods. (1) hierarchical sub-parts casting, can cross the job. Stratified casting furnace wall, each height 700-1000mm. Segmented roof construction, expansion joints between two roof should be completed once the casting. (2) according to the size of branch design requirements set a good template, template medial layer of plastic film, pour the mix into the template, the fabric should be uniform, not use vibrators vibrator. (3) the capacity of castable ≤0.8g / cm3, and after pouring layered compacted with a trowel, capacity castable ≥1.0g / cm3, and after pouring pressed tamping with ┵ tamping tool. (3) conservation and Chaimo: ambient temperature ≥20 ℃, nature conservation can form removal after four hours, the ambient temperature ≤20 ℃, nature conservation Chaimo 5-7 hours, as occurred after the local angular Chaimo damage, can be repair. Roof removal time should be extended as appropriate. 2, cast construction method (1) the mix artificial projection method, layers of projected work surface, when projected thickness of the design size, compaction with the trowel, trowel. (2) the furnace wall and vertical pipes lining the bottom-up hierarchical construction, each height 700-1000mm, Nature Conservation 3-4 hours after each construction constructability second layer. (3) This method does not apply to the roof surface lining construction. 3. Apply construction method (1) Apply the mix with artificial methods, direct smear job surface. (2) bottom-up hierarchical continuous furnace wall painting, each height 700-1000mm, every smear thickness 50-100mm, continuous smear several times until the thickness reaches the required size, with a trowel trowel compaction , each 3-4 hours after construction Nature Conservancy, constructability second layer. (3) roof piecewise continuous smear, for a period of between two joints, each smear smear thickness 30-50mm continuously until the thickness reaches the required size, with a trowel trowel compaction. (4) large diameter horizontal pipe insulation lining, should adopt the first segment of construction lining, then set up the connection method, pipeline construction segment, the pipe will be placed horizontally, first smear under semicircle lining, nature conservation 4- After 8 hours, the pipe flip angle of 180 °. Apply another semicircle lining, pipe connections do after seaming. 4, leaving in expansion joints (1) as the surface castable lining (Face) when the materials used, the need to stay reasonable expansion joints. (2) vertical joints from the corner of the wall at the beginning of one meter, leaving in a 1.5-2 m intervals, joints width of 10-15mm. (3) horizontal joints about every 1.5-2 m height leaving in an expansion joint width 10-15mm. (4) Press the furnace roof length direction, every 1.5-2 m leaving in a 10-15mm wide joints. (5) ≥2 m diameter pipe lining layer, vertical joints by leaving in an arc length of about 2m intervals, ring joints, leaving in a height of about 2m intervals, joints width of 10-15mm. A castable ceramic fibers, the product description:? Castable ceramic fiber, ceramic fiber cotton as aggregate, adding a variety of fillers, binders, additives and other materials. Not only has excellent performance shaped fiber products, and because of its good performance and mechanical properties of construction, to further broaden the applications of ceramic fiber products. ? Castable ceramic fibers with a construction easy and quick, especially for complex shape of the wall lining, easy construction, furnace wall integrity, good application effect Second, the technical characteristics? Low thermal conductivity, heat capacity, thermal shock resistance, excellent pressure, bending performance it has excellent resistance to erosion, abrasion, impact, performance and a certain load-bearing capacity; strong adaptability of the furnace atmosphere; 4-8 hours after casting furnace wall to stripping, and has certain hardness. Third, the product application:? Industrial furnace wall lining or high temperature industrial furnace insulation backing. Ladle the whole cast cover; heat pipe wall lining continuous furnace, pit furnace, bell furnace, door, watching the fire hole, burner brick Cape, shaped preformed parts ladle cover, colored?? black metal melt channel, four slots, the technical indicators: Name Type ceramic fiber insulation castable refractory castable ceramic fibers GLNC-297 GLNC-397 GLNC-497 GLNC-597 maximum use temperature 1,050,115,012,501,350 long-term use temperature 100011001200 1300 Chemical Composition (%) Al2O3 ≥30 ≥35 ≥40 ≥40 Si O2 ≥30 ≥40 ≥35 ≥35 bulk density (kg / m3) Wet 1150-1250 1150-1250 1250-1350 1250-1350 110 ℃ * 24h After drying 550 600 600 700 after firing 500 (1000 ℃ * 3h) 550 (1000 ℃ * 3h) 550 (1200 ℃ * 3h) 550 (1300 ℃ * 3h) Thermal conductivity (W / mk) average temperature 400 ℃ 0.115 0.118 0.150 0.171 The average temperature of 600 ℃ 0.116 0.155 0.175 0.195 average temperature 800 ℃ 0.185 0.195 0.221 Cold flexural strength (Mpa) ≥ 110 ℃ * 24h after drying 0.4 0.4 0.5 0.5 burn 0.4 (1000 ℃ * 3h) 0.4 (1100 ℃ * 3h) 0.4 (1200 ℃ * 3h) 0.4 (1300 ℃ * 3h) Cold compressive strength (Mpa) ≥ 110 ℃ * 24h after drying burn 0.5 0.5 0.6 0.6 0.4 (1000 ℃ * 3h) 0.5 (1100 ℃ * 3h ) 0.5 (1200 ℃ * 3h) 0.6 (1300 ℃ * 3h) plus hotline shrinkage (%) ≤ 3 (1000 ℃ * 24h) 3 (1100 ℃ * 24h) 3 (1200 ℃ * 24h) 3 (1300 ℃ * 24h) Initial setting time (min) ≥ 60 60 60 60 ejection time (h) 3-8 3-8 3-8 3-8