6.
    发明专利
    未知

    公开(公告)号:DE59508562D1

    公开(公告)日:2000-08-17

    申请号:DE59508562

    申请日:1995-09-14

    Abstract: PCT No. PCT/CH95/00204 Sec. 371 Date May 22, 1996 Sec. 102(e) Date May 22, 1996 PCT Filed Sep. 14, 1995 PCT Pub. No. WO96/10097 PCT Pub. Date Apr. 4, 1996In a method for processing solid residues from refuse incineration plants the slag is melted and heavy metals from the melt (16) are separated for reutilization. The slag is directly transferred from the refuse incineration plant into a first heating chamber (2) and melted there under oxidizing conditions. The melt (16) produced therefrom is transferred to a second heating chamber (3), in which the heavy metal compounds are reduced to their metallic form. Furthermore, additional finely divided residues, such as fly ash, boiler ash and filter dust, are introduced into the second heating chamber (3) via a hollow graphite electrode (19). The melt (16) is then passed on to a third heating chamber (4), in which the residual readily volatile metals are vaporized and the residual non-volatile metals are sedimented. The essentially heavy-metal-free melt is then cooled to form vitreous granules.

    7.
    发明专利
    未知

    公开(公告)号:AT194664T

    公开(公告)日:2000-07-15

    申请号:AT95929713

    申请日:1995-09-14

    Abstract: PCT No. PCT/CH95/00204 Sec. 371 Date May 22, 1996 Sec. 102(e) Date May 22, 1996 PCT Filed Sep. 14, 1995 PCT Pub. No. WO96/10097 PCT Pub. Date Apr. 4, 1996In a method for processing solid residues from refuse incineration plants the slag is melted and heavy metals from the melt (16) are separated for reutilization. The slag is directly transferred from the refuse incineration plant into a first heating chamber (2) and melted there under oxidizing conditions. The melt (16) produced therefrom is transferred to a second heating chamber (3), in which the heavy metal compounds are reduced to their metallic form. Furthermore, additional finely divided residues, such as fly ash, boiler ash and filter dust, are introduced into the second heating chamber (3) via a hollow graphite electrode (19). The melt (16) is then passed on to a third heating chamber (4), in which the residual readily volatile metals are vaporized and the residual non-volatile metals are sedimented. The essentially heavy-metal-free melt is then cooled to form vitreous granules.

    PROCESS FOR PRODUCING CEMENT FROM METALLURGICAL SLAG

    公开(公告)号:HU213652B

    公开(公告)日:1997-09-29

    申请号:HU9402760

    申请日:1994-01-26

    Abstract: In a process for the preparation of cement from metallurgical slags, in which liquid slags from reduction processes and steelworks processes, e.g. blast furnace and converter slag, are mixed together and mixed with lime the procedure is such that in a first cooling phase at temperatures above 1000 DEG C., and preferably above 1200 DEG C., the cooling is slower than in a subsequent second cooling phase and that the solidified product obtained is granulated and/or ground in order to obtain directly cement with improved hydraulic properties, in particular increased final strength.

    PROCESS FOR PRODUCING CEMENT FROM METALLURGICAL SLAGS

    公开(公告)号:CZ281875B6

    公开(公告)日:1997-03-12

    申请号:CZ230894

    申请日:1994-01-26

    Abstract: In a process for the preparation of cement from metallurgical slags, in which liquid slags from reduction processes and steelworks processes, e.g. blast furnace and converter slag, are mixed together and mixed with lime the procedure is such that in a first cooling phase at temperatures above 1000 DEG C., and preferably above 1200 DEG C., the cooling is slower than in a subsequent second cooling phase and that the solidified product obtained is granulated and/or ground in order to obtain directly cement with improved hydraulic properties, in particular increased final strength.

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