公开(公告)号：ZA8002836B

公开(公告)日：1981-06-24

申请号：ZA8002836

申请日：1980-05-13

Applicant: HOECHST AG

Inventor： BRAUN A ,  STRAUSS G ,  PORTZ W

IPC: C21C1/02 ,  C21C7/064 ,  C21C7/076 ,  C21C

CPC classification number: C21C7/0645 ,  C21C1/025

公开(公告)号：ZA7500704B

公开(公告)日：1976-01-28

申请号：ZA7500704

申请日：1975-02-04

Applicant: HOECHST AG

Inventor： WITT H ,  STENDEL J ,  WEILER H ,  MOORMANN G ,  PORTZ W ,  STRAUSS G

IPC: C04B2/02 ,  C01F11/02 ,  C01F11/04 ,  C04B2/10 ,  F27B9/24 ,  C01B

CPC classification number: C04B2/10 ,  C01F11/04 ,  C01P2004/61 ,  Y02P40/42

公开(公告)号：ZA821939B

公开(公告)日：1983-02-23

申请号：ZA821939

申请日：1982-03-23

Applicant: HOECHST AG

Inventor： BRAUN A ,  PORTZ W ,  STRAUSS G ,  DELHEY H

IPC: C21C1/02 ,  C21C7/064 ,  C21C7/076 ,  C21C

Abstract: The disclosure relates to a process for the manufacture of desulfurizing agents containing 1-6 weight % chemically combined water, based on calcium oxide and carbon-containing calcium carbide, for crude iron and steel melts. More particularly, the disclosure provides for a molten mixture of calcium carbide and calcium oxide containing 20 to 80 weight % CaO to be made from lime and coke; for the mixture to be allowed to cool and solidify into a block; for the solidified block while it still has an average temperature of more than 400 DEG C. to be crushed to particles with a size of less than 150 mm; for the comminuted mixture, which still has a temperature of at least 400 DEG C. to be admixed with a quantity of calcium oxide necessary to establish in the resulting mixture a total content of CaO corresponding to the CaO content desired in the end product; and for the mixture to be gound while intensively mixing it with free carbon and carbonate in the presence of air or nitrogen with a moisture content of 5 to 20 g/m3 (at 1.013 bar and 273.15 K.) at temperatures below 100 DEG C. to particles with a size of less than 10 mm.

公开(公告)号：ZA8201939B

公开(公告)日：1983-02-23

申请号：ZA8201939

申请日：1982-03-23

Applicant: HOECHST AG

Inventor： BRAUN A ,  PORTZ W ,  STRAUSS G ,  DELHEY H

IPC: C21C1/02 ,  C21C7/064 ,  C21C7/076 ,  C21C

CPC classification number: C21C1/025 ,  C21C7/0645

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.

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

Inventor： STRAUSS G ,  PORTZ W ,  BRAUN A ,  KANDLER J ,  KOMORNICZYK K ,  THIEL H-D

IPC: C21C1/02

CPC classification number: C21C1/025

公开(公告)号：SE7709947L

公开(公告)日：1978-03-18

申请号：SE7709947

申请日：1977-09-05

Applicant: HOECHST AG

Inventor： KANDLER J ,  KOMORNICZYK K ,  THIEL H-D ,  STRAUSS G ,  PORTZ W ,  BRAUN A

IPC: C21C1/02 ,  C21C7/064 ,  C21C7/02

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

Inventor： STENDEL J ,  PORTZ W ,  STRAUSS G ,  WITT H ,  WEILER H ,  MOORMANN G

IPC: C04B2/02 ,  C01F11/02 ,  C01F11/04 ,  C04B2/10 ,  F27B9/24 ,  B01J6/00

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.

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

Inventor： WITT H ,  STENDEL J ,  WEILER H ,  MOORMANN G ,  PORTZ W ,  STRAUSS G

IPC: C04B2/02 ,  C01F11/02 ,  C01F11/04 ,  C04B2/10 ,  F27B9/24 ,  C01B

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.

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

Inventor： STENDEL J ,  PORTZ W ,  STRAUSS G ,  WEILER H ,  MOORMANN G ,  WITT H

IPC: C04B2/02 ,  C01F11/02 ,  C01F11/04 ,  C04B2/10 ,  F27B9/24 ,  C04B

CPC classification number: C04B2/10 ,  C01F11/04 ,  C01P2004/61 ,  Y02P40/42