公开(公告)号：ZA808064B

公开(公告)日：1982-01-27

申请号：ZA808064

申请日：1980-12-29

Applicant: HOECHST AG ,  KRUPP STAHL AG

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

IPC: C01B32/942 ,  C21C1/02 ,  C21C7/064 ,  C21C7/076 ,  C21C

Abstract: The present invention relates to a process for the manufacture of desulfurizing agents containing 1-6% by weight of chemically bonded water, based on calcium oxide-containing calcium carbide, for crude iron and steel melts. To this end, a molten mixture of calcium carbide and calcium oxide with a CaO content of 20 to 80% by weight is produced, which is allowed to solidify into a block. Next, the block which still has an average temperature of more than 400 DEG C., is rough-crushed to particles with a size of less than 150 mm and calcium oxide is added to the comminuted mixture, which still has a temperature of at least 400 DEG C., in accordance with the CaO content desired in the end product. The mixture is finally ground in the presence of air or nitrogen with a moisture content of from 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：DK550880A

公开(公告)日：1981-06-30

申请号：DK550880

申请日：1980-12-23

Applicant: HOECHST AG ,  BOCHUM AG

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

IPC: C01B32/942 ,  C21C1/02 ,  C21C7/064 ,  C21C7/076 ,  C21C

Abstract: The present invention relates to a process for the manufacture of desulfurizing agents containing 1-6% by weight of chemically bonded water, based on calcium oxide-containing calcium carbide, for crude iron and steel melts. To this end, a molten mixture of calcium carbide and calcium oxide with a CaO content of 20 to 80% by weight is produced, which is allowed to solidify into a block. Next, the block which still has an average temperature of more than 400 DEG C., is rough-crushed to particles with a size of less than 150 mm and calcium oxide is added to the comminuted mixture, which still has a temperature of at least 400 DEG C., in accordance with the CaO content desired in the end product. The mixture is finally ground in the presence of air or nitrogen with a moisture content of from 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：ZA783598B

公开(公告)日：1979-07-25

申请号：ZA783598

申请日：1978-06-23

Applicant: HOECHST AG

Inventor： STRAUB G ,  KOMORNICZYK K ,  BRAUN A ,  KANDLER J ,  PORTZ W ,  THIEL H

IPC: C21C1/02 ,  C21C

公开(公告)号：ZA7803598B

公开(公告)日：1979-07-25

申请号：ZA7803598

申请日：1978-06-23

Applicant: HOECHST AG

Inventor： STRAUB G ,  KOMORNICZYK K ,  BRAUN A ,  KANDLER J ,  PORTZ W ,  THIEL H

IPC: C21C1/02 ,  C21C

CPC classification number: C21C1/025

公开(公告)号：LU79856A1

公开(公告)日：1979-02-02

申请号：LU79856

申请日：1978-06-22

Applicant: HOECHST AG

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

IPC: C21C1/02 ,  B22F ,  B01F ,  C21C

公开(公告)号：SE7807182L

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

公开(公告)号：ZA821940B

公开(公告)日：1983-02-23

申请号：ZA821940

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

公开(公告)号：ZA8201940B

公开(公告)日：1983-02-23

申请号：ZA8201940

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: C21C7/0645 ,  C21C1/025

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

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

IPC: C21C1/02

公开(公告)号：YU53679A

公开(公告)日：1983-01-21

申请号：YU53679

申请日：1979-03-05

Applicant: HOECHST AG

Inventor： BRAUN A ,  PORTH W ,  KANIS J ,  SCHEMEL J H

IPC: B60P1/64 ,  B65J1/02