Porous thermal insulation filling material made of paper mill sludge and preparation method thereof
A technology of filling material and papermaking sludge, which is applied in the field of preparation of the porous thermal insulation filling material, can solve the problems of complex composition of papermaking sludge, difficult treatment, secondary pollution, etc., achieve stable molding, low price, and reduce secretion water effect
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[0024] Example 1:
[0025] Such as figure 1 As shown, 30 kg of paper sludge with a water content of 40% to 60%, 10 kg of sulfoaluminate cement, 30 kg of fly ash with a fineness of 0.01 to 0.045 mm, 1 kg of gypsum, and 1 kg of water are injected into Mixer, stir at 800-1000r / min for 15-35min until the materials are evenly mixed; add 0.01 kg of rosin gum foaming agent to the mixer, mix evenly, and get mixed mortar; put the mixed mortar into the storage room at 20~ Foaming for 30 minutes at 32 ℃, the semi-finished product of porous thermal insulation filling material is made with uniform and dense internal pores; the foamed foamed papermaking sludge is used to inject the semi-finished product of porous thermal insulation filling material into a rotary molding machine for molding. Granules; natural curing of the formed porous heat-insulating filling material for 1 h, then the finished product is obtained.
Example Embodiment
[0026] Example 2:
[0027] Such as figure 1 As shown, 35 kg of paper sludge with a water content of 40% to 60%, 14 kg of gypsum cement, 35 kg of fly ash with a fineness of 0.01 to 0.045 mm, 3 kg of gypsum, and 10 kg of water are injected into the mixer to Stir at 800~1000r / min for 15~35min until the materials are evenly mixed; add 0.06 kg of rosin gum foaming agent to the mixer and mix evenly to obtain a mixed mortar; put the mixed mortar into the storage room and keep it at 20~32 ℃ Foam for 70 minutes to make a semi-finished product of porous thermal insulation filling material, with uniform and dense internal pores; inject the foamed foam paper sludge into the semi-finished product of porous thermal insulation filling material using a feeder into a rotary molding machine for molding and granulation; The formed porous thermal insulation filling material is naturally cured for 10 hours, and the finished product is obtained.
Example Embodiment
[0028] Example 3:
[0029] Such as figure 1 As shown, 40 kg of papermaking sludge with a water content of 40% to 60%, 18 kg of pozzolanic composite cementitious materials, 40 kg of fly ash with a fineness of 0.01 to 0.045 mm, 6 kg of gypsum, and 21 kg of water, Pour into the mixer and stir at 800-1000r / min for 15-35min until the materials are evenly mixed; add 0.12 kg of rosin gum foaming agent into the mixer and mix evenly to obtain a mixed mortar; put the mixed mortar into the storage room at 20 Foaming at ~32 ℃ for 120 minutes to make a semi-finished porous heat-insulating filling material with uniform and dense internal pores; the semi-finished porous heat-insulating filling material made of foamed papermaking sludge is injected into a rotary molding machine by a conveyor for molding Granulation; natural curing of the formed porous heat-insulating filling material for 24 hours, and the finished product is obtained.
[0030] The porous thermal insulation filling materials prepa
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