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公开(公告)号:SE382394B
公开(公告)日:1976-02-02
申请号:SE7306293
申请日:1973-05-04
Applicant: HOECHST AG
Inventor: CZISKA J , STRAUSS G , PORTZ W , KOMORINCZYK K , KANDLER J
Abstract: The invention provides the use of an iron/silicon/phosphorus-alloy containing between 8 and 25 weight % of silicon and between 0.3 and 2.5 weight % of phosphorus as heavy medium for making heavy pulps for the heavy media separation of minerals.
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公开(公告)号:SE374135B
公开(公告)日:1975-02-24
申请号:SE433171
申请日:1971-04-02
Applicant: HOECHST AG
Inventor: KANDLER J , MERKENICH K , LANDGREBER H , HINZ A
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公开(公告)号:DK129137C
公开(公告)日:1975-01-27
申请号:DK282069
申请日:1969-05-23
Applicant: HOECHST AG
Inventor: GRIMM D , KANDLER J , MERKENICH K , PIRIG W-D
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公开(公告)号:SE435223B
公开(公告)日:1984-09-10
申请号:SE7702851
申请日:1977-03-14
Applicant: HOECHST AG
Inventor: WORTMANN J , DANY F-J , KANDLER J , BEU H P
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公开(公告)号:DK145232C
公开(公告)日:1983-03-07
申请号:DK66873
申请日:1973-02-07
Applicant: HOECHST AG
Inventor: KANDLER J , MERKENICH K , HENNING K
IPC: C11D3/06
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公开(公告)号:DK145232B
公开(公告)日:1982-10-11
申请号:DK66873
申请日:1973-02-07
Applicant: HOECHST AG
Inventor: KANDLER J , MERKENICH K , HENNING K
IPC: C11D3/06
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公开(公告)号:DK143451B
公开(公告)日:1981-08-24
申请号:DK191273
申请日:1973-04-09
Applicant: HOECHST AG
Inventor: KANDLER J , MERKENICH K , ULRICH H
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公开(公告)号:SE416540B
公开(公告)日:1981-01-19
申请号:SE7708205
申请日:1977-07-14
Applicant: HOECHST AG
Inventor: STAENDEKE H , OANY F-J , KANDLER J , AUEL T , KLOSE W
IPC: C01B25/023 , C01B25/00
Abstract: 1519929 Red phosphorus HOECHST AG 27 May 1977 [17 July 1976] 22500/77 Heading C1A Stabilized pulverulent red phosphorus comprises a homogeneous blend of red phosphorus particles with a size of at most about 2mm and as an oxidation stabilizer a metal compound of the second or third group of the Periodic System, the metal compound being the aluminium, magnesium, calcium or zinc salt of an alkyl-, cycloalkyl-, aryl- or aralkyl-phosphonic acid having 1 to 20 carbon atoms, the metal compound being present in the homogeneous blend in a proportion of 0À5 to 5 weight per cent. Red phosphorus particles may-be intimately blended with 0À5 to 5 weight per cent, based on red phosphorus, of an alkyl-, cycloalkyl-, aryl- or aralkyl-phosphonic acid having 1 to 20 carbon atoms; the blend suspended in water and the suspension heated to 60 to 95‹ C.; the suspension gradually admixed with at least stoichiometric proportions of an aqueous solution of a water-soluble aluminium, magnesium, calcium or zinc salt to cause precipitation of the respective phosphoric acid salt from the aqueous suspension at a pH of 3À0 to 6À0 and preferably at a temperature of from 80 to 90‹ C.; the resulting mixture filtered, and the filter residue dried at elevated temperature, suitably at 80 to 130‹ C., and if desired, under reduced pressure. Preferred water-soluble salts are Al 2 (SO 4 ) 3 .18H 2 O, Ca(NO 3 ) 2 .4H 2 O, ZnSO 4 .7H 2 O and MgSO 4 .7H 2 O, which may be used in the form of 5 to 20 weight per cent aqueous solutions. The aluminium salt is suitably precipitated at pH 3À0 to 3À5 and the salts of the other metals at pH 5À0 to 6À0.
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