High efficiency and energy saving fly ash sintered brick making method
A technology for fly ash and sintered bricks, applied in the field of preparation of fly ash sintered bricks, can solve the problems of large drying shrinkage, influence of product strength, easy deformation of wet blanks, etc. Risk of deformation, improved effectiveness of drying contact surfaces
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Embodiment 1
[0025] Prepare materials by weight:
[0026] Material name Parts by weight
[0027] 62 parts of fly ash
[0028] Hard Shale 38 parts
[0029]The hard shale is sent to the hammer crusher for crushing, and then sent to the pendulum mill for further refining treatment. The particle size of the shale powder after refining treatment is below 2mm, and the particles below 1mm account for 82 wt. %, particles below 0.25mm accounted for 35 wt%. Feed the fly ash and finely ground shale powder into the rod mixer for mixing; after mixing evenly, send them into the first double-shaft mixer, add room temperature water for stirring; after stirring evenly , sent to the second twin-shaft mixer, based on the total weight of the fly ash and the refined shale powder, 15 wt% of hot water at 90 degrees was added for stirring.
[0030] Afterwards, the stirred material is sent to the aging warehouse for aging for more than 72 hours. The aged material is extruded through a two-stage vacuum brick e...
Embodiment 2
[0034] Prepare materials by weight:
[0035] Material name Parts by weight
[0036] 65 parts of fly ash
[0037] Hard Shale 35 parts
[0038] The hard shale is sent to the hammer crusher for crushing, and then sent to the pendulum mill for further refinement. The particle size of the shale powder after refinement is below 1.8mm, and the particles below 1.5mm account for 85 wt%, particles below 0.25mm accounted for 40 wt%. Send the fly ash and ground shale powder into the rod mixer for mixing; after mixing evenly, send them into the first double-shaft mixer, add room temperature water for stirring; after stirring evenly, send them into In the second twin-shaft mixer, based on the total weight of the fly ash and the refined shale powder, add 18% water or steam for stirring.
[0039] Afterwards, the stirred material is sent to the aging warehouse for aging for more than 72 hours. The aged material is extruded through a two-stage vacuum brick extrusion machine, the extrusion ...
Embodiment 3
[0043] Prepare materials by weight:
[0044] Material name Parts by weight
[0045] 70 parts of fly ash
[0046] Clay 30 parts
[0047] The rest of the preparation process is the same as in Example 1, the difference is only that the clay is crushed using a high-speed finely crushed pair of rollers, and the firing temperature is set at 1080°C. o C
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