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公开(公告)号:AU6933981A
公开(公告)日:1981-10-15
申请号:AU6933981
申请日:1981-04-09
Applicant: HOECHST AG
Inventor: PORTZ W
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公开(公告)号:ZA8003816B
公开(公告)日:1981-07-29
申请号:ZA8003816
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
CPC classification number: C01B32/942 , Y02P20/129
Abstract: 1. Process for the production of calcium carbide by reacting coke with lime in the presence of oxygen in an oxygen-thermal furnace, characterized in that lignite with a particle size of up to 150 mm is cokefied in a hearth furnace at off-gas temperatures of at least 7508c, the coke so obtained with an inherent temperature of more than 5008C is directly introduced into the oxygen-thermal furnace process, and calcium carbide is produced in the oxygen-thermal furnace with addition of lime and oxygen.
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公开(公告)号:SE7807182A
公开(公告)日:1978-12-26
申请号:SE7807182
申请日:1978-06-22
Applicant: HOECHST AG
IPC: C21C1/02
CPC classification number: C21C1/025
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公开(公告)号:IN141238B
公开(公告)日:1977-02-05
申请号:IN211CA1975
申请日:1975-02-04
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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公开(公告)号:ZA75704B
公开(公告)日:1976-01-28
申请号:ZA75704
申请日:1975-02-04
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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公开(公告)号:NO750492A
公开(公告)日:1975-08-19
申请号:NO750492
申请日:1975-02-14
Applicant: HOECHST AG
CPC classification number: C04B2/10 , C01F11/04 , C01P2004/61 , Y02P40/42
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公开(公告)号:NO131927B
公开(公告)日:1975-05-20
申请号:NO130270
申请日:1970-04-08
Applicant: HOECHST AG
IPC: B01J19/06 , C01B32/942 , C01B31/32
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