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

Inactive Publication Date: 2017-01-04
山东福航新能源环保股份有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Papermaking sludge is the terminal product of wastewater treatment in the papermaking process. For every ton of recycled paper produced, 700 kg of sludge with a water content of 65% is produced, which is 5 to 10 times that of a municipal sewage treatment plant of the same scale. The c

Method used

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  • Porous thermal insulation filling material made of paper mill sludge and preparation method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[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 prep...

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Abstract

The invention discloses a porous thermal insulation filling material made of paper mill sludge and a preparation method thereof. Raw material paper mill sludge, cement, fly ash and gypsum are injected into a stirrer in proportion to be stirred evenly; a foaming agent is added into the stirrer, uniform mixing is performed to obtain mixed mortar; and the mixed mortar is contained in a storage chamber and undergoes rest curing foaming to obtain the semi-finished porous thermal insulation filling material; the semi-finished product is injected into a forming machine to be formed and granulated; the formed porous thermal insulation filling material undergoes natural curing, and a finished product is obtained. A mode of manufacturing the porous thermal insulation filling material made of the paper mill sludge is provided, the problem that existing paper mill sludge is stacked messily and pollutes the environment can be solved, and harmlessness, resource reutilization, economy and efficiency of the paper mill sludge can be guaranteed.

Description

technical field [0001] The invention relates to a porous heat-insulating filling material made of papermaking sludge, and also relates to a preparation method of the porous heat-insulating filling material. Background technique [0002] Papermaking sludge is the terminal product of wastewater treatment in the papermaking process. For every ton of recycled paper produced, 700 kg of sludge with a water content of 65% is produced, which is 5 to 10 times that of a municipal sewage treatment plant of the same size. The composition is complex, the water content is high, and the treatment is difficult. If it is not properly treated, it will cause serious secondary pollution. Therefore, the harmless treatment and disposal of papermaking sludge has become an environmental problem that needs to be solved urgently. [0003] Papermaking sludge is rich in biomass, with an organic matter content of 40% to 50%. It mainly contains high molecular weight organic matter such as cellulose, hemi...

Claims

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Application Information

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IPC IPC(8): C04B28/02C04B28/06C04B28/14C04B38/08C04B38/02
CPCC04B28/02C04B28/06C04B28/14C04B38/02C04B38/08C04B2111/40C04B2111/52
Inventor 王志恒闫广播孙红波张洪彬王震
Owner 山东福航新能源环保股份有限公司
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