公开(公告)号：NO153499B

公开(公告)日：1985-12-23

申请号：NO803923

申请日：1980-12-23

Applicant: HOECHST AG ,  KRUPP STAHL AG

Inventor： BRAUN ALBERT ,  PORTZ WILLI ,  STRAUSS GEORG ,  DELHEY HANS-MARTIN

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

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：NO151971C

公开(公告)日：1985-07-10

申请号：NO801468

申请日：1980-05-16

Applicant: HOECHST AG

Inventor： BRAUN ALBERT ,  PORTZ WILLI ,  STRAUSS GEORG

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

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：ZA8307955B

公开(公告)日：1984-07-25

申请号：ZA8307955

申请日：1983-10-26

Applicant: HOECHST AG ,  UHDE GMBH

Inventor： PIETZARKA FRIEDRICH-WILHELM ,  MEURER PETER ,  PORTZ WILLI ,  KAMPMANN FRIEDRICH-WILHELM

IPC: C10J3/46 ,  C01B25/027 ,  C01B32/942 ,  C10J3/08 ,  C10J3/84 ,  C21B13/00 ,  C22C33/00 ,  C10J

CPC classification number: C10J3/66 ,  C01B25/027 ,  C01B32/942 ,  C01P2006/80 ,  C10J3/08 ,  C10J3/74 ,  C10J3/76 ,  C10J3/84 ,  C10J2300/093 ,  C10J2300/0943 ,  C10J2300/0959 ,  C10J2300/0969 ,  C10J2300/0976 ,  C10J2300/0996 ,  C10J2300/1807 ,  C10J2300/1884 ,  C21B13/0006 ,  C21B2100/44 ,  C21B2100/66 ,  C22C33/003 ,  Y02P10/136

Abstract: 1. Process for making synthesis gas (CO + H2 ) by subjecting fine-particulate materials rich in carbon to an autothermal gasification reaction with oxygen, wherein the material rich in carbon having a particle size of 0 - 0,1 mm is injected together with oxygen and, if desired, auxiliary gas into a hot gasification zone, the resulting primary crude synthesis gas containing flying ashes is passed with its inherent thermal energy through a reduction zone charged with the feed materials necessary for effecting an endothermal carbothermal reduction and, increased by the synthesis gas produced during the carbothermal reduction, through a preheating zone arranged immediately above the reduction zone and filled with the same material as this latter zone, and removed with a temperature of 300 up to 1500 degrees C for purification and conversion, and wherein molten reaction product originating from the carbothermal reduction and molten slag are taken from a collecting and post-reaction zone below the reduction zone, which comprises : forming, as the gasification zone, in a heap of loosely aggregated feed material, a cavity or at least a fluidized bed of such loosely aggregated material which is maintained at 1300 - 3000 degrees C ; forming the reduction zone above, and laterally with respect to, the gasification zone ; carrying out simultaneously in the reduction zone a post-gasification reaction during which the steam contained in the primary crude synthesis gas and carbon dioxide undergo reaction with the material rich in carbon to give additional synthesis gas.

公开(公告)号：IN153342B

公开(公告)日：1984-07-07

申请号：IN1420CA1980

申请日：1980-12-23

Applicant: HOECHST AG ,  KRUPP STAHL AG

Inventor： BRAUN ALBERT ,  PORTZ WILLI ,  STRAUSS GEORG ,  DELHEY HANS-MARTIN

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

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：DD202415A5

公开(公告)日：1983-09-14

申请号：DD24105582

申请日：1982-06-24

Applicant: HOECHST AG ,  RHEINISCHE BRAUNKOHLENW AG

Inventor： KERSTING HANS-JOACHIM ,  WOLFRUM ERHARD ,  PORTZ WILLI ,  STRAUSS GEORG

IPC: C01B31/30 ,  C01B32/942 ,  C10J3/46 ,  C01B31/32

公开(公告)号：BR8204810A

公开(公告)日：1983-08-02

申请号：BR8204810

申请日：1982-08-17

Applicant: HOECHST AG

Inventor： PORTZ WILLI ,  GOLDMANN EDGAR ,  PIETZARKA FRIEDRICH WILHELM ,  NEUMANN ULRICH ,  MEURER PETER

IPC: C01B25/027 ,  C01B32/942 ,  C10J3/08 ,  C10J3/46 ,  C10J3/84 ,  C21B13/00 ,  C22B13/00 ,  C22C33/00 ,  C10J3/48

公开(公告)号：DD155528A5

公开(公告)日：1982-06-16

申请号：DD22670080

申请日：1980-12-29

Applicant: HOECHST AG ,  KRUPP STAHL AG

Inventor： BRAUN ALBERT ,  PORTZ WILLI ,  STRAUSS GEORG ,  DELHEY HANS-MARTIN

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

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：NO802975A

公开(公告)日：1981-04-09

申请号：NO802975

申请日：1980-10-07

Applicant: HOECHST AG

Inventor： BRAUN ALBERT ,  PORTZ WILLI ,  STRAUSS GEORG

IPC: B65D71/00 ,  B65D

CPC classification number: B65D71/0096 ,  B65D2571/00024 ,  B65D2571/00055 ,  B65D2571/00074 ,  B65D2571/00111

公开(公告)号：CA649211A

公开(公告)日：1962-09-25

申请号：CA649211D

Applicant: HOECHST AG

Inventor： WIMMER RUDOLF ,  SCHILKEN HARTMUT ,  FISCHER WERNER ,  WIRTZ RUDOLF ,  PORTZ WILLI

公开(公告)号：DK151569C

公开(公告)日：1988-05-30

申请号：DK550880

申请日：1980-12-23

Applicant: HOECHST AG ,  KRUPP STAHL AG

Inventor： BRAUN ALBERT ,  PORTZ WILLI ,  STRAUSS GEORG ,  DELHEY HANS-MARTIN

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

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.