公开(公告)号：DE2362725A1

公开(公告)日：1975-06-26

申请号：DE2362725

申请日：1973-12-17

Applicant: HOECHST AG

Inventor： STENDEL JOACHIM DIPL CHEM DR ,  PORTZ WILHELM DIPL CHEM DR ,  WEILER HEINRICH ,  MOORMANN GUENTHER ,  WITT HORST

IPC: F26B17/00 ,  B03C1/00 ,  F26B11/02 ,  F26B17/12 ,  F26B17/32 ,  F26B20/00 ,  F26B21/00 ,  F26B25/00 ,  F26B11/04 ,  C10B57/00

公开(公告)号：NO139731B

公开(公告)日：1979-01-22

申请号：NO750492

申请日：1975-02-14

Applicant: HOECHST AG

Inventor： STENDEL JOACHIM ,  PORTZ WILHELM ,  STRAUSS GEORG ,  WEILER HEINRICH ,  MOORMANN GUENTER ,  WITT HORST

IPC: C04B2/02 ,  C01F11/02 ,  C01F11/04 ,  C04B2/10 ,  F27B9/24 ,  C04B1/02

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：DE2407506A1

公开(公告)日：1975-08-21

申请号：DE2407506

申请日：1974-02-16

Applicant: HOECHST AG

Inventor： STENDEL JOACHIM DIPL CHEM DR ,  PORTZ WILHELM DIPL CHEM DR ,  STRAUSS GEORG DIPL CHEM DR ,  WEILER HEINRICH ,  MOORMANN GUENTHER ,  WITT HORST

IPC: C01B32/942 ,  C01F11/04 ,  C04B2/10 ,  C01B31/32

公开(公告)号：NO139731C

公开(公告)日：1979-05-02

申请号：NO750492

申请日：1975-02-14

Applicant: HOECHST AG

Inventor： STENDEL JOACHIM ,  PORTZ WILHELM ,  STRAUSS GEORG ,  WEILER HEINRICH ,  MOORMANN GUENTER ,  WITT HORST

IPC: C04B2/02 ,  C01F11/02 ,  C01F11/04 ,  C04B2/10 ,  F27B9/24 ,  C04B1/02

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：DE2461573A1

公开(公告)日：1976-07-01

申请号：DE2461573

申请日：1974-12-27

Applicant: HOECHST AG

Inventor： RABOWSKY HANS DIPL CHEM DR ,  PORTZ WILHELM DIPL CHEM DR ,  STENDEL JOACHIM DIPL CHEM DR ,  MUENCH GOTTFRIED ,  MOORMANN GUENTER ,  WITT HORST

IPC: C01B32/942 ,  C01F11/04 ,  C04B2/10 ,  C04B1/02

Abstract: In the calcination of mouldings used as reacting mixture components in electro-thermal carbide furnaces and obtained by granulating or briquetting of moist calcium hydroxide, by (a) transporting the mouldings through a heating zone on a belt, high temps. being produced by burning gases above the belt and waste gases being drawn away below the belt, (b) covering the calcium hydroxide mouldings present on the belt with a covering layer and transporting them directly through the heating zone without pre-drying, generally as disclosed in DT 2407506, the improvement whereby the covering material is applied to the calcium hydroxide mouldings in such a way that the surface of the covering layer has a corrugated profile. Solves the problem of non-uniform metering of the covering material particularly limestone chips, which can lead to the suction belt being damaged by exposure to excessively high temperatures. A calcined product of improved quality is obtained with an increase in throughput.