1、第 1 页 共 16 页上接：文库中热风炉耐材施工安装指导说明书 1（英文版）.doc3.4.2 Laying of Stove Bottom with Clay Brick 1) The bricklaying shall start from the center to both sides by scribing the level line as per the design elevation on the cross central line. 2) Quality Inspection: leveling instrumentFig. 3.4-3 Schematic Diagra
2、m for Sequence of Clay Brickwork3.4.3 Paving of Fused Sand 1) The dry sand with maximum particle diameter below 5mm shall be paved on the clay bricks according to the design elevation. 2) The large screw rod built around shall be covered with the rainproof cloth and bound tightly with steel wire. 3)
3、 This work has something to do with installation of stove shell for Section 1. The stove shell for the 1st section being hoisted, the rainproof cloth shall be removed. Following inspection of stove shell elevation after hoisting, the stove shell for the 1st section shall be hoisted again to inspect
4、whether the surface of fused sand has the drop pit. If there is the drop pits, they shall be re-leveled with fused sand. Such an inspection shall be repeated until the flatness is competent.第 2 页 共 16 页3.4.4 Packing of Water-free Tamping After the stove shell for the 3rd section is installed, the ex
5、plosive shall be packed with tamping. The tamping shall be pressed to pack the lower part of the stove shell. And the redbrick shall be laid close to the stove shell to block off the water-free tamping. The surface of redbrick shall be plastered with a 20mm-thick layer of 1:2 cement mortar.3.4.5 Pre
6、ssure Grouting1) Following the welding of strengthening ring and beam on the lower part of stove shell and the fastening of bolts, the pressure grouting can start after the stove shell is installed to the 6th section. Prior to hoisting of the stove bottom shell, the stub pipe shall be welded and emb
7、edded.Fig. 3.4-4 Schematic Diagram of Grouting Stub Pipe2) The injection mix is the 425# ordinary Portland cement and the water-cement ratio 0.40.5. 3) Before pressure grouting, the grouting holes shall be numbered in turn according to the arrangement drawing of such holes and the elevation check po
8、int marked 100mm from the hole. The elevation measured shall be filled in the form of installation accuracy.4) After removing the plastic cover on the stub pipe, clear the stub pipe and the bottom plate around of the floating stain and dirt, and tamp the stub pipe with wood stopper that must be pull
9、ed away when the pressure grouting starts. 5) The size, joining mode and binding methods of mud jacking pipe shall be determined according to the joint specifications of grouting stub pipe. 6) The well-mixed cement mortar can be added into the squeeze mortar pump. Pressure grouting can start as per
10、the number of mud jack holes. Prior to construction, all machines, tools and materials must be ready at the construction site and the construction continued without stoppage halfway above 30 minutes. The well-mixed cement mortar must be grouted and completed in 30 minutes.第 3 页 共 16 页7) The operator
11、s inside and outside shall keep liaison and the press-in machine operator obey the orders from the inside-stove constructors. 8) There are three standards in completion and stoppage of pressure grouting for each mud jack hole: (1) In pressure grouting, the level meter shall be used to monitor the ch
12、anges of elevation at the point on the stove bottom plate beside the press-in hole. The elevation rising to 2mm, the pressure grouting shall stop and be considered completed.(2) The pressure gage of the press-in machine reaching 0.6Mpa, the pressure grouting shall stop and be considered completed. (
13、3) The adjacent pressure inlet flowing out the press-in material, the wood stopper on the stub pipe shall be pull off at once, and then the pressure grouting considered completed.Fig. 3.4-5 Schematic Diagram for Arrangement of Grouting Holes第 4 页 共 16 页Pulp resMixrFigure 3.4-6 Schematic of pressure
14、grouting construction9) After the grout squeezing operation is completed fully, immediately flush the grout squeezer with clean water until no left-over grout exists in the piping.Engine Gear BoxMaterial 4WheelFigure 3.4-7 Schematic of a grout squeezer10) After squeezed-in material construction is c
15、ompleted, let the completed construction cure naturally for 36 72 hours, cut off the squeezing-in short tube after the squeezed-in material sets, and then solder-seal the squeezing-in nozzle;图 3.4-6 压力灌浆施工示意图第 5 页 共 16 页图 3.4-8 压入口封焊示意图11) 压入口封焊后即可进行下道工序施工。12) 质量检查：用水准仪。第 6 页 共 16 页Figure 3.4-8 Sche
16、matic for solder-sealing the squeezing-in nozzle11) The next process step can begin after the squeezing-in nozzle is solder-sealed;12) Quality inspection: completed with a level gauge;4 Grouting of Refractory Concrete on Stove Bottom Plate4.1 Construction LocationsFig. 4.1-1 Schematic Diagram for Re
17、fractory on Stove Bottom Plate4.2 Construction Conditions 1) The handover of the installation procedure is over. 2) The machines, tools and lighting equipment are complete. 第 7 页 共 16 页3) The corner frame inside the stove are cleared of the foreign matters. 4) The yarded materials are qualified afte
18、r inspected. 4.3 Construction SequenceWelding of Steel FabricHeat-resisting Concrete on the Stove Bottom PlateMaintenance4.4 Key Spots of Construction 1) Welded steel fabric 2) The single-layer two-way intersection point 200 is the location of standing reinforcement (If the H-beam is met with, the l
19、ocation has to be moved). 3) Welding: Welding shall goes from standing reinforcement, to longitudinal steel fabric of the bottom layer and the transverse steel fabric of the upper layer and to the hoop reinforcement around. 4) In welding of steel bar, the bar can be cut off in case of the backbone.
20、5) After the control elevation of 0.715m is measured with the level gage, the elevation shall be moved around the stove shell once and along the backbone upward 100mm and used as the basis for inspection of surface flatness of refractory concrete. 6) Mixing: to mix it according to the service manual
21、 provided by the supplier. 7) Pouring: to start from 270and end at the manhole.8) Vibration: to ram it with 50 vibrator from fast to slowly until the mortar spills.9) Flattening: to strike off after the elevation is measured with 100mm scale ratio and compacted with wood washboard.10) Curing: all is
22、 pre-hardened. In case of no fingerprint, to water and cure it.11) Inspection of installation accuracy: the level gauge and 2m guiding ruler第 8 页 共 16 页5 Spraying of Hot-blast Stove 5.1 Construction LocationsFig. 5.1-1 Schematic Diagram for Spraying of Hot-blast Stove第 9 页 共 16 页5.2 Construction Con
23、ditions1) Accoding to the installation center point of the stove bottom, a 5kg drop ball is hung at the stove top and relevant adjustments made by reference to the actual installation size of stove shell and fire grate so as to determine the central perpendicular line for spraying of the hot-blast s
24、tove. 2) The installed hanging scaffold is qualified after inspected. 3) The spray coater is debugged and qualified after trial spraying. 4) The yarded materials is qualfied after checked. 5) The tapping of 6 700700 feed holes and the perforations of different types are completed. 6) The anchors are
25、 welded and the stove cleared of stain.Fig. 5.2-1 Schematic Diagram for Arrangement of Spraying Feed Hole for Hot-blast Stove第 10 页 共 16 页5.3 Spraying ScheduleFig. 5.3-1 Schematic Diagram for Spraying of Hot-blast Stove第 11 页 共 16 页5.4 Key points in construction5.4.1 Setting up the control lineMeasu
26、re 3 positions (10, 130 and 250) in the horizontal coordinate system, as shown in the following figure, and then mark out 3 vertical lines. Weld an M18 nut horizontally at intervals of 3m down each vertical line. These nuts are used for radius control in spray painting when mounting the central stee
27、l tube.Figure 5.4-1 Schematic diagram for setting up control lines for spray painting of the hot-blast furnace body5.4.2 Spray painting the arch top1) Before spray painting begins, trial spray painting shall be conducted according to the construction instructions for the spray paint in use so as to
28、determine the appropriate parameters, like wind pressure, water pressure, etc.;2) Spray paint shall be applied using a semidry method. Water shall be added to the spray paint and the mixture shall then be stirred evenly before letting the mixture in the spray painter;3) The spray paint and water sha
29、ll be continuously sprayed during spray painting and no dry paint spots or running tracks of paint shall be allowed to form on the spray painting surface;4) The direction of spray painting shall be normal to, and the spray nozzle shall be 11.5m from, the surface being sprayed, and the spray nozzle s
30、hall be in 第 12 页 共 16 页continuous helical movement to ensure even distribution of rough and fine particles;5) Spray painting shall be carried out by segments from top to bottom and the design thickness shall be obtained with one instance of spray painting;6) Whenever spray painting interrupts, the
31、joint thus formed shall be a straight joint preferably. The joint shall be mositened with water before spray painting resumes after such an interruption;7) For information on the curing of a spray paint, please refer to the construction instructions provided by the supplier concerned;8) The part of
32、the furnace casting between the elevation of 35.876m and the ledge supports for the first brick layer shall not be spray-painted. Plastic film shall be applied on this part, before spray painting begins, so as to prevent contamination;Figure 5.4 - 2 Schematic diagram for setting up brick support of
33、arch top of hot-blast furnace9) Water and moisten prevention work shall be properly completed after an acid-resistant spray paint is spray-painted;10) Checking the radius on the arch top: Use the 200mm-high etched line on the steel tube to screw up the movable bushing; place the wood radian plate, l
34、eft over after pegging out the arch top using a 20 shaping plate, on the angle bar on the bushing, turn the bushing to check the spray painting radius. Excessive paint shall be scraped off in places where the paint coating is too thick; where the paint coating is too thin (5mm), some more paint shal
35、l be spray-painted to ensure the correct thickness of paint coating. Spray painting surfaces only need to be sufficiently level and show no signs of discoloring. The key point in 第 13 页 共 16 页spray painting is to ensure the central radius in laying work.482.5L75630L506020 Tensio rgulatin devcRadil w
36、heroWhel rodbasRadin shpig latefor spyaintg Suport fixng thewl rodPul rodf ixngthe cral pte Disk forixng thecral od M18 nutCentral odFigure 5.4 - 3 Schematic diagram for the control and inspection of the hot-blast furnace spray painting radius5.4.3 Spray-painting the straight cylinder segmentThe spr
37、ay painting of the straight cylinder segment shall be identical with that of the arch top. The inspection of the spray painting radius shall be controlled with a movable radial wheel rod. 5.4.4 CuringRefer to the instruction manual provided by the supplier.5.4.5 Quality inspectionUse a steel tapelin
38、e or a wood scale.第 14 页 共 16 页6 Laying the hot-blast furnace body6.1 Laying reference1) Using the spray painting centerline as the reference, hang a 5kg plumb from the furnace top and use it as the centerline in the laying of the bearing wall;Figure 6.1-1 Schematic diagram for setting up the center
39、line for the laying of the hot-blast furnace bearing wall2) Use a level gauge to peg out designed elevation lines;3) Laying principle: lay the furnace body from its furnace casing to the working layer (special parts excluded);第 15 页 共 16 页Thermal insulation brickBound with fiberThermal insulation br
40、ickClay brickBound with fiberThermal insulation brickFigure 6.1 - 2 Schematic diagram for the procedure of laying the hot-blast furnace bearing wall4) Laying sequenceLaying 20 layers for the heat storage chambers bearing wallLaying 20 layers for the combustion chambers bearing wallLaying 8 layers of checkered bricks5) Laying starts from the 270 position in both directions and ends both sides of the 90 position.Figure 6.1 - 3 Schematic for setting up a starting point for laying the hot-blast furnaces bearing 第 16 页 共 16 页wall
