公开(公告)号：ZA812364B

公开(公告)日：1982-05-26

申请号：ZA812364

申请日：1981-04-09

Applicant: HOECHST AG

Inventor： PORTZ W ,  STRAUSS G ,  STENDEL J ,  FRORATH F ,  GOLDMANN E

IPC: B60T13/36 ,  B60T13/58 ,  B60T13/74 ,  C01B32/942 ,  H02K49/04 ,  C01B31/32

公开(公告)号：ZA8008065B

公开(公告)日：1982-01-27

申请号：ZA8008065

申请日：1980-12-29

Applicant: HOECHST AG ,  KRUPP STAHL AG

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

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

CPC classification number: C21C1/025 ,  C21C7/0645

公开(公告)号：ZA8008064B

公开(公告)日：1982-01-27

申请号：ZA8008064

申请日：1980-12-29

Applicant: HOECHST AG ,  KRUPP STAHL AG

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

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

CPC classification number: C21C1/025 ,  C21C7/0645

公开(公告)号：BR8008513A

公开(公告)日：1981-07-21

申请号：BR8008513

申请日：1980-12-23

Applicant: HOECHST AG ,  KRUPP STAHL AG

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

IPC: C21C1/02 ,  C21C7/064 ,  C21C7/076 ,  C01B31/32

Abstract: The invention relates to agents for the desulfurization of metal melts, especially of steel and crude iron melts, based on mixtures of CaC2/CaO crystals produced in the fused mass. A portion of the CaO in the crystal mixture is hydrated to form Ca(OH)2. A process for the manufacture of these agents is also described.

公开(公告)号：DK550980A

公开(公告)日：1981-06-30

申请号：DK550980

申请日：1980-12-23

Applicant: HOECHST AG

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

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

Abstract: The invention relates to agents for the desulfurization of metal melts, especially of steel and crude iron melts, based on mixtures of CaC2/CaO crystals produced in the fused mass. A portion of the CaO in the crystal mixture is hydrated to form Ca(OH)2. A process for the manufacture of these agents is also described.

公开(公告)号：ZA802943B

公开(公告)日：1981-06-24

申请号：ZA802943

申请日：1980-05-16

Applicant: HOECHST AG

Inventor： BRAUN A ,  PORTZ W ,  STRAUSS G

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

Abstract: The invention relates to the production of an agent for desulfurizing crude iron and steel melts, the desulfurizing agent being based on calcium carbide containing calcium oxide. To this end, a calcium carbide/calcium oxide/starting melt mixture with a CaO-content within the range 20 to 80 weight % is produced from lime and coke and allowed to solidify to a block. While the solidified block still has an average temperature of more than 400 DEG C., it is crushed to particulate material with a size of less than 150 mm. Next, the hot crushed material of at least 400 DEG C. is admixed with a quantity of calcium oxide necessary to have in the resulting mixture an overall content of CaO corresponding to that desired for the final product. The whole is thoroughly mixed and crushed with exclusion of moisture at temperatures higher than 100 DEG C. to particulate material with a size of less than 10 millimeters.

公开(公告)号：ZA802836B

公开(公告)日：1981-06-24

申请号：ZA802836

申请日：1980-05-13

Applicant: HOECHST AG

Inventor： BRAUN A ,  STRAUSS G ,  PORTZ W

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

公开(公告)号：ZA747914B

公开(公告)日：1976-01-28

申请号：ZA747914

申请日：1974-12-12

Applicant: HOECHST AG

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

IPC: F26B17/00 ,  B03C1/00 ,  F26B11/02 ,  F26B17/12 ,  F26B17/32 ,  F26B20/00 ,  F26B21/00 ,  F26B25/00 ,  F26B

公开(公告)号：NO133124B

公开(公告)日：1975-12-08

申请号：NO182973

申请日：1973-05-03

Applicant: HOECHST AG

Inventor： CZISKA J ,  STRAUSS G ,  PORTZ W ,  KOMORNICZYK K ,  KANDLER J

IPC: B03B5/30 ,  B03B5/44 ,  B03C1/00 ,  C22C38/00 ,  C22C38/02 ,  C22C39/44

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.

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.