公开(公告)号：CZ285643B6

公开(公告)日：1999-10-13

申请号：CZ251293

申请日：1993-11-23

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT DR ,  ALT CHRISTIAN ,  CLAUS MARTIN ,  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：CZ251293A3

公开(公告)日：1994-06-15

申请号：CZ251293

申请日：1993-11-23

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT DR ,  ALT CHRISTIAN ,  CLAUS MARTIN ,  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：CZ9302512A3

公开(公告)日：1994-06-15

申请号：CZ251293

申请日：1993-11-23

Applicant: DEGUSSA

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

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10

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：SK133693A3

公开(公告)日：1994-06-08

申请号：SK133693

申请日：1993-11-29

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT ,  ALT CHRISTIAN ,  CLAUS MARTIN ,  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.