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公开(公告)号:SE426710B
公开(公告)日:1983-02-07
申请号:SE7807182
申请日:1978-06-22
Applicant: HOECHST AG
IPC: C21C1/02
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公开(公告)号:ZA803816B
公开(公告)日:1981-07-29
申请号:ZA803816
申请日:1980-06-26
Applicant: RHEINISCHE BRAUNKOHLENW AG , HOECHST AG
Inventor: STRAUSS G , KERSTING H , GOLDMANN E , WOLFRUM E , PORTZ W
IPC: C01B32/942 , C01B
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公开(公告)号:SE382394B
公开(公告)日:1976-02-02
申请号:SE7306293
申请日:1973-05-04
Applicant: HOECHST AG
Inventor: CZISKA J , STRAUSS G , PORTZ W , KOMORINCZYK K , KANDLER J
Abstract: The invention provides the use of an iron/silicon/phosphorus-alloy containing between 8 and 25 weight % of silicon and between 0.3 and 2.5 weight % of phosphorus as heavy medium for making heavy pulps for the heavy media separation of minerals.
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公开(公告)号:NO131927C
公开(公告)日:1975-08-27
申请号:NO130270
申请日:1970-04-08
Applicant: HOECHST AG
IPC: B01J19/06 , C01B32/942 , C01B31/32
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公开(公告)号:NO750492L
公开(公告)日:1975-08-19
申请号:NO750492
申请日:1975-02-14
Applicant: HOECHST AG
Abstract: Pellet-shaped calcium hydroxide forming part of the mixture of flux and ores in electrothermal calcium carbide furnaces is calcined. The pellets are made by granulating or briquetting moist calcium hydroxide, delivered to a sintering grate and conveyed thereon through a heating zone, wherein high temperatures are produced by the combustion of gas, above the grate, and wherein the combustion gas is exhausted, below the grate. The calcium hydroxide pellets are more especially placed on to the grate, covered with a layer of broken limestone and the undried pellets are directly conveyed through the heating zone, in an apparatus for carrying out the process.
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