公开(公告)号：US3707449A

公开(公告)日：1972-12-26

申请号：US3707449D

申请日：1971-05-17

Applicant: DEGUSSA

Inventor： REINHARDT HELMUT ,  TREBINGER KARL ,  KALLRATH GOTTFRIED

IPC: C01C3/12

CPC classification number: C01C3/12

Abstract: PURE AQUEOUS SOLUTION OF POTASSIUM HEXACYANOFERRATE (III), SODIUM HEXACYANOFERRATE (III) AND SODIUM POTASSIUM HEXACYANOFERRATE (III) ARE PREPARED BY OXIDATION OF THE CORRESPONDING HEXACYANOFERRATE (II) SOLUTIONS WITH ACIDS CONTAINING THE GROUP (FE(CN)6) AND AN OXIDIZING AGENT HAVING AN OXIDATION POTENTIAL GREATER THAN +0.46 VOLT.

公开(公告)号：US3433593A

公开(公告)日：1969-03-18

申请号：US3433593D

申请日：1966-06-24

Applicant: DEGUSSA

Inventor： REINHARDT HELMUT ,  NAUROTH PETER

IPC: C01B33/193 ,  C01B33/18

CPC classification number: B82Y30/00 ,  C01B33/193 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/80

公开(公告)号：US3915733A

公开(公告)日：1975-10-28

申请号：US43871074

申请日：1974-02-01

Applicant: DEGUSSA

Inventor： REINHARDT HELMUT ,  TREBINGER KARL ,  KALLRATH GOTTFRIED

IPC: C01C3/12 ,  C09C1/26

CPC classification number: C01C3/12 ,  C01P2006/60 ,  C09C1/26

Abstract: Berlin blue is produced by converting (a) calcium ferrocyanide, sodium ferrocyanide or magnesium ferrocyanide with (b) an iron II salt at a pH below 7 to an acidic iron II salt of ferrocyanic acid FeH2(Fe(CN)6). The calcium or sodium ions can be washed out of the precipitate of the ferrocyanic salt. The precipitate is treated with (c) an inorganic or organic potassium salt to form Berlin white and then oxidized to Berlin blue. Alternatively, (a), (b) and (c) can be reacted together at a temperature of 20* to 60*C. to form Berlin white directly.

公开(公告)号：US3867197A

公开(公告)日：1975-02-18

申请号：US34317073

申请日：1973-03-20

Applicant: DEGUSSA

Inventor： REINHARDT HELMUT ,  TREBINGER KARL ,  KALLRATH GOTTFRIED

IPC: B01D21/08 ,  B01D11/02 ,  B01D21/24 ,  B03B5/62 ,  C02F11/00 ,  C02F11/12 ,  C09C3/00 ,  B01D12/00 ,  C01B33/18 ,  C01C3/12

CPC classification number: C09C3/006 ,  B01D11/0242 ,  B01D11/0253 ,  B03B5/623 ,  C01P2006/40 ,  C01P2006/60 ,  C09C3/06 ,  C09C3/08

Abstract: Voluminous precipitates or suspensions are contacted countercurrently with liquid purification or extraction agents that hold the continuously supplied precipitate or suspension in the upwardly flowing liquid in a kind of fluidized bed. A suitable apparatus is also described.

Abstract translation: 大量沉淀物或悬浮液与液体纯化或提取剂反向接触，液体净化或提取剂将持续供应的沉淀物或悬浮液保持在一种流化床中的向上流动的液体中。 还描述了合适的装置。

公开(公告)号：US3864453A

公开(公告)日：1975-02-04

申请号：US34317173

申请日：1973-03-20

Applicant: DEGUSSA

Inventor： REINHARDT HELMUT ,  TREBINGER KARL ,  KALLRATH GOTTFRIED

IPC: C25D21/18 ,  C01C3/12 ,  C02F1/58

CPC classification number: C01C3/12

Abstract: Alkali ferrocyanides are prepared by converting calcium hexacyanoferrate (II) with an iron (II) salt to an iron (II) hexacyanoferrate (II), washing the complex with water until free of calcium ions and then reacting further with sodium, potassium or ammonium cyanide.

Abstract translation: 碱式亚铁氰化物通过将六氰基铁酸钙（II）与铁（II）盐转化为六氰合铁酸铁（II）而制备，用水洗涤该配合物直至不含钙离子，然后再与氰化钠，氰化钾或氰化铵反应 。

公开(公告)号：US3554759A

公开(公告)日：1971-01-12

申请号：US3554759D

申请日：1968-04-01

Applicant: DEGUSSA

Inventor： BESCHKE HELMUT ,  REINHARDT HELMUT ,  COLOGNE BEZIRK ,  ACHENBACH KARL

IPC: C01B33/193 ,  C12H1/00 ,  C12H1/04

CPC classification number: C01B33/193 ,  C01P2006/12 ,  C01P2006/80 ,  C12H1/00 ,  C12H1/04

Abstract: BEER IS TREATED TO IMPROVE ITS STABILITY DURING STORAGE WHEREBY THE BEER IS CONTACTED WITH A MODIFIED FINELY DIVIDED SILICA OBTAINED BY PRECIPITATING SILICA FROM AN AQUEOUS ALKALI METAL SILICATE SOLUTION WITH AN ACID IN THE PRESENCE OF WATER SOLUBLE POLYVINYL PYRROLIDONE, POLYVINYL-3METHYL PYRRODIDONE OR VINYL PYRROLIDONE-VINYL ACETATE COPOLYMERS.

公开(公告)号：US3473890A

公开(公告)日：1969-10-21

申请号：US3473890D

申请日：1966-07-26

Applicant: DEGUSSA

Inventor： REINHARDT HELMUT ,  NAUROTH PETER ,  ACHENBACH KARL

IPC: C01B33/32 ,  A23L2/80 ,  A23L2/82 ,  B01J20/10 ,  C12H1/044 ,  C12H1/048 ,  C01B33/24

CPC classification number: C01B33/42 ,  A23L2/80 ,  A23L2/82 ,  B01J20/10 ,  C01B33/26 ,  C01B33/40 ,  C01B33/46 ,  C12H1/0408

公开(公告)号：CA1061988A

公开(公告)日：1979-09-11

申请号：CA240526

申请日：1975-11-26

Applicant: DEGUSSA

Inventor： BRANDT BERND ,  NAUROTH PETER ,  PETERS ALBERT ,  REINHARDT HELMUT

IPC: C01B33/18 ,  C01B33/193 ,  C09C3/00 ,  B01D1/18

Abstract: The present invention provides in a process for producing a finely divided silica by spray drying in a spray drier a sprayable highly concentrated silica suspension, which is low in grit content the improvement in which the spray drying is carried out in the presence of a base or of a basic-reacting substance in an amount sufficient for complete or partial neutralization of the acid present in the suspension originating as acid used as a dispersing agent or of acid still present in redispersed filter cake or for alkaline adjustment to yield a dried silica with a pH value greater than 6.0.

公开(公告)号：DE1807714B1

公开(公告)日：1970-06-18

申请号：DE1807714D

申请日：1968-11-08

Applicant: DEGUSSA

Inventor： REINHARDT HELMUT ,  BRANDT BERND ,  PETERS ALBERT

IPC: B30B3/04 ,  B01J2/22 ,  B30B11/16 ,  B30B11/18 ,  C09C1/30 ,  C09C3/04

Abstract: A mass of finely divided material is confined in a chamber. Two rollers are arranged for rotation in the chamber in axial parallelism with one another and defined with each other a narrow longitudinally extending gap. At least one of the rollers has a circumferential wall composed of gas-permeable porous material. This one roller is hollow and arranged to communicate with a source of underpressure so that, as the roller rotates, the particulate material is attracted onto its outer surface forming a layer thereon which is subjected to substantial compaction when it passes through the gap between the two rollers. The rollers rotate in opposite direction. The compacted material is removed from the outer surface of the roller or rollers and subdivided into portions of desired size.

公开(公告)号：CA829209A

公开(公告)日：1969-12-09

申请号：CA829209D

Applicant: DEGUSSA

Inventor： ACHENBACH KARL ,  REINHARDT HELMUT ,  NAUROTH PETER