发明名称 |
MATERIALE ISOLANTE TERMICO ED ACUSTICO PER L EDILIZIA E PROCEDIMENTO PER LA SUA FABBRICAZIONE |
摘要 |
<p>The invention provides a novel light-weight building material suitable for heat and sound insulation from an aluminum hydroxide sludge, which is a very noxious industrial waste material, and disintegrated scrapped paper as the base components. The sludge is first alkalized by the addition of sodium hydroxide to dissolve the gel-like aluminum hydroxide in the form of sodium aluminate and then admixed with the disintegrated scrapped paper to give a slurried mixture which is next neutralized to a weakly acidic condition by adding phosphoric acid whereby insoluble phosphates are deposited on the cellulosic fibers. The slurried mixture is further admixed with a coagulating agent to give a coagulated mass of the fibrous material with deposition of the phosphates. The coagulated mass is then separated from the liquid portion and dried to give a light-weight mass which is used as a blow-on insulating material for buildings or as a material for shaping an insulating board or slab.</p> |
申请公布号 |
IT8168619(D0) |
申请公布日期 |
1981.12.14 |
申请号 |
IT19810068619 |
申请日期 |
1981.12.14 |
申请人 |
YOSHIDA KOGYO K.K.;OKAMURA TATSURO;GIAPPONE |
发明人 |
TATSURO OKAMURA;HIDEKI IRIFUNE |
分类号 |
C04B18/24;C04B18/04;C04B28/00;C04B28/34;D06M11/45;D21C9/00;E04B1/90;E04C2/02;(IPC1-7):E04B/ |
主分类号 |
C04B18/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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