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A platform for research: civil engineering, architecture and urbanism
Method for preparing porous building thermal insulation material from asbestos tailing silicon-magnesium residues
The invention belongs to the technical field of solid waste resource utilization, and discloses a method for preparing a porous building thermal insulation material from asbestos tailing silicon-magnesium residues. The method comprises the following steps: crushing, grinding, sieving and magnetically separating asbestos tailings, roasting and activating residual residues and a carbon reducing agent, and magnetically separating out high-grade fine iron powder to obtain silicon-magnesium residues; carrying out hydrothermal reaction on the obtained silicon-magnesium residues to prepare silicon-magnesium gel; and uniformly stirring and mixing the silicon-magnesium gel with a pore-forming agent, an inorganic foaming agent, an organic foaming agent and water, putting the mixture into a mold, andcarrying out microwave heating foaming and infrared drying to obtain the porous building thermal insulation material. According to the method, high-grade fine iron powder can be obtained, detoxification is achieved, residual silicon and magnesium components are prepared into the porous building thermal insulation material with the high additional value, and harmless and full-resource utilizationof asbestos tailings is achieved.
本发明属于固废资源化利用技术领域，公开了一种利用石棉尾矿硅镁残渣制备多孔建筑保温材料的方法。将石棉尾矿经破碎研磨过筛，磁选，剩余的残渣与碳还原剂焙烧活化，再磁选选出高品位的铁精粉，得到硅镁残渣；将所得硅镁残渣经水热反应，制备得到硅镁凝胶；将硅镁凝胶与造孔剂、无机发泡剂、有机发泡剂和水搅拌混合均匀，放入到模具中，微波加热发泡，红外烘干，得到多孔建筑保温材料。本发明方法可获得高品位铁精粉并实现脱毒，并将残余硅镁组分制成具有高附加值的多孔建筑保温材料，实现石棉尾矿的无害化和全资源化利用。
Method for preparing porous building thermal insulation material from asbestos tailing silicon-magnesium residues
The invention belongs to the technical field of solid waste resource utilization, and discloses a method for preparing a porous building thermal insulation material from asbestos tailing silicon-magnesium residues. The method comprises the following steps: crushing, grinding, sieving and magnetically separating asbestos tailings, roasting and activating residual residues and a carbon reducing agent, and magnetically separating out high-grade fine iron powder to obtain silicon-magnesium residues; carrying out hydrothermal reaction on the obtained silicon-magnesium residues to prepare silicon-magnesium gel; and uniformly stirring and mixing the silicon-magnesium gel with a pore-forming agent, an inorganic foaming agent, an organic foaming agent and water, putting the mixture into a mold, andcarrying out microwave heating foaming and infrared drying to obtain the porous building thermal insulation material. According to the method, high-grade fine iron powder can be obtained, detoxification is achieved, residual silicon and magnesium components are prepared into the porous building thermal insulation material with the high additional value, and harmless and full-resource utilizationof asbestos tailings is achieved.
本发明属于固废资源化利用技术领域，公开了一种利用石棉尾矿硅镁残渣制备多孔建筑保温材料的方法。将石棉尾矿经破碎研磨过筛，磁选，剩余的残渣与碳还原剂焙烧活化，再磁选选出高品位的铁精粉，得到硅镁残渣；将所得硅镁残渣经水热反应，制备得到硅镁凝胶；将硅镁凝胶与造孔剂、无机发泡剂、有机发泡剂和水搅拌混合均匀，放入到模具中，微波加热发泡，红外烘干，得到多孔建筑保温材料。本发明方法可获得高品位铁精粉并实现脱毒，并将残余硅镁组分制成具有高附加值的多孔建筑保温材料，实现石棉尾矿的无害化和全资源化利用。
Method for preparing porous building thermal insulation material from asbestos tailing silicon-magnesium residues
一种利用石棉尾矿硅镁残渣制备多孔建筑保温材料的方法
SU XINTAI (author) / LIN ZHANG (author) / WAN JUANJUAN (author) / LAN YINGYING (author) / TIAN LANLAN (author) / ZHU QIAN (author)
2020-07-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B03C
Magnetische oder elektrostatische Trennung fester Stoffe von festen Stoffen oder flüssigen oder gasförmigen Medien
,
MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
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