公开(公告)号：DE59308248D1

公开(公告)日：1998-04-16

申请号：DE59308248

申请日：1993-11-12

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT DR ,  ALT CHRISTIAN ,  CLAUS MARTINA ,  LOROESCH JUERGEN DR ,  LEUTNER JOSEF ,  MOENCH HEINZ DR

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10

Abstract: The invention relates to new alkali cyanide granules based on sodium cyanide or potassium cyanide and also a process for the preparation thereof. Commercial alkali cyanide granules comprise irregular particles: disadvantages are, in particular, the tendency to form dust and lumps. Alkali cyanide granules of the invention have practically no abrasion and a reduced tendency to form lumps. The granules are characterised by essentially spherical particles, particle diameters in the range from 0.1 to 20 mm, a bulk density above 600 g/dm , an abrasion of less than 1% and a caking index of at most 4. The granules can be prepared by fluidised-bed spray granulation, by an aqueous solution containing an alkali cyanide being sprayed on alkali cyanide nuclei in a fluidised bed and water being evaporated.

公开(公告)号：DE4240576C2

公开(公告)日：1996-04-18

申请号：DE4240576

申请日：1992-12-04

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT DR ,  ALT CHRISTIAN ,  CLAUS MARTINA ,  LOROESCH JUERGEN DR ,  LEUTNER JOSEF ,  MOENCH HEINZ DR

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10

Abstract: The invention relates to new alkali cyanide granules based on sodium cyanide or potassium cyanide and also a process for the preparation thereof. Commercial alkali cyanide granules comprise irregular particles: disadvantages are, in particular, the tendency to form dust and lumps. Alkali cyanide granules of the invention have practically no abrasion and a reduced tendency to form lumps. The granules are characterised by essentially spherical particles, particle diameters in the range from 0.1 to 20 mm, a bulk density above 600 g/dm , an abrasion of less than 1% and a caking index of at most 4. The granules can be prepared by fluidised-bed spray granulation, by an aqueous solution containing an alkali cyanide being sprayed on alkali cyanide nuclei in a fluidised bed and water being evaporated.

公开(公告)号：ES2116387T3

公开(公告)日：1998-07-16

申请号：ES93118345

申请日：1993-11-12

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT DR ,  ALT CHRISTIAN ,  CLAUS MARTINA ,  LOROSCH JURGEN DR ,  LEUTNER JOSEF ,  MONCH HEINZ DR

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10

Abstract: The invention relates to new alkali cyanide granules based on sodium cyanide or potassium cyanide and also a process for the preparation thereof. Commercial alkali cyanide granules comprise irregular particles: disadvantages are, in particular, the tendency to form dust and lumps. Alkali cyanide granules of the invention have practically no abrasion and a reduced tendency to form lumps. The granules are characterised by essentially spherical particles, particle diameters in the range from 0.1 to 20 mm, a bulk density above 600 g/dm , an abrasion of less than 1% and a caking index of at most 4. The granules can be prepared by fluidised-bed spray granulation, by an aqueous solution containing an alkali cyanide being sprayed on alkali cyanide nuclei in a fluidised bed and water being evaporated.

公开(公告)号：ZA939085B

公开(公告)日：1994-08-05

申请号：ZA939085

申请日：1993-12-03

Applicant: DEGUSSA

Inventor： ALT CHRISTIAN ,  CLAUS MARTINA ,  LEUTNER JOSEF ,  MOENCH HEINZ ,  RIEMENSCHNEIDER HERBERT ,  LOROESCH JUERGEN

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10 ,  C01C

Abstract: The invention relates to new alkali cyanide granules based on sodium cyanide or potassium cyanide and also a process for the preparation thereof. Commercial alkali cyanide granules comprise irregular particles: disadvantages are, in particular, the tendency to form dust and lumps. Alkali cyanide granules of the invention have practically no abrasion and a reduced tendency to form lumps. The granules are characterised by essentially spherical particles, particle diameters in the range from 0.1 to 20 mm, a bulk density above 600 g/dm , an abrasion of less than 1% and a caking index of at most 4. The granules can be prepared by fluidised-bed spray granulation, by an aqueous solution containing an alkali cyanide being sprayed on alkali cyanide nuclei in a fluidised bed and water being evaporated.

公开(公告)号：CA2110660A1

公开(公告)日：1994-06-05

申请号：CA2110660

申请日：1993-12-03

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT ,  ALT CHRISTIAN ,  CLAUS MARTINA ,  LOROESCH JUERGEN ,  LEUTNER JOSEF ,  MOENCH HEINZ

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10

Abstract: The invention relates to new alkali metal cyanide granulates based on sodium cyanide or potassium cyanide and a method for their preparation. Commercially available alkali metal cyanide granulates consist of irregular particles. Disadvantages are in particular the tendencies to form dust and to cake. The alkali metal cyanide granulates according to the invention demonstrate virtually no abrasion and a reduced tendency to cake. The granulates are characterized by essentially spherical particles with particle diameters in the range 0.1 to 20 mm, a bulk density of more than 600 g/dm3, an abrasion of less than 1% and a caking index of at most 4. The granulates can be prepared by fluidized bed spray granulation, by spraying an aqueous solution containing alkali metal cyanide onto alkali metal cyanide nuclei in a fluidized bed and evaporating the water.

公开(公告)号：AU668778B2

公开(公告)日：1996-05-16

申请号：AU5215293

申请日：1993-12-03

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT ,  ALT CHRISTIAN ,  CLAUS MARTINA ,  LOROSCH JURGEN ,  LEUTNER JOSEF ,  MONCH HEINZ

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10

Abstract: The invention relates to new alkali cyanide granules based on sodium cyanide or potassium cyanide and also a process for the preparation thereof. Commercial alkali cyanide granules comprise irregular particles: disadvantages are, in particular, the tendency to form dust and lumps. Alkali cyanide granules of the invention have practically no abrasion and a reduced tendency to form lumps. The granules are characterised by essentially spherical particles, particle diameters in the range from 0.1 to 20 mm, a bulk density above 600 g/dm , an abrasion of less than 1% and a caking index of at most 4. The granules can be prepared by fluidised-bed spray granulation, by an aqueous solution containing an alkali cyanide being sprayed on alkali cyanide nuclei in a fluidised bed and water being evaporated.

公开(公告)号：ZA9309085B

公开(公告)日：1994-08-05

申请号：ZA9309085

申请日：1993-12-03

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT ,  ALT CHRISTIAN ,  CLAUS MARTINA ,  LOROESCH JUERGEN ,  LEUTNER JOSEF ,  MOENCH HEINZ

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10 ,  C01C

CPC classification number: C01C3/10 ,  C01P2004/32 ,  C01P2004/50 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/21 ,  C01P2006/80 ,  Y10T428/2982 ,  Y10T428/2991 ,  Y10T428/2993

公开(公告)号：DE4240576A1

公开(公告)日：1994-06-09

申请号：DE4240576

申请日：1992-12-04

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT DR ,  ALT CHRISTIAN ,  CLAUS MARTINA ,  LOROESCH JUERGEN DR ,  LEUTNER JOSEF ,  MOENCH HEINZ DR

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10

Abstract: The invention relates to new alkali cyanide granules based on sodium cyanide or potassium cyanide and also a process for the preparation thereof. Commercial alkali cyanide granules comprise irregular particles: disadvantages are, in particular, the tendency to form dust and lumps. Alkali cyanide granules of the invention have practically no abrasion and a reduced tendency to form lumps. The granules are characterised by essentially spherical particles, particle diameters in the range from 0.1 to 20 mm, a bulk density above 600 g/dm , an abrasion of less than 1% and a caking index of at most 4. The granules can be prepared by fluidised-bed spray granulation, by an aqueous solution containing an alkali cyanide being sprayed on alkali cyanide nuclei in a fluidised bed and water being evaporated.