HUT77963A - Method and apparatus for the treatment of acidic solutions containing molybdenum and/or tungsten and originating in heating-filament production - Google Patents

Method and apparatus for the treatment of acidic solutions containing molybdenum and/or tungsten and originating in heating-filament production

Info

Publication number
HUT77963A
HUT77963A HU9401883A HU9401883A HUT77963A HU T77963 A HUT77963 A HU T77963A HU 9401883 A HU9401883 A HU 9401883A HU 9401883 A HU9401883 A HU 9401883A HU T77963 A HUT77963 A HU T77963A
Authority
HU
Hungary
Prior art keywords
tungsten
solutions containing
originating
heating
treatment
Prior art date
Application number
HU9401883A
Other languages
Hungarian (hu)
Other versions
HU9401883D0 (en
Inventor
Károly Welther
Ralph Berkin
Károlyné Welther
Kálmán Kovács
Térfalvi Zsuzsa Perlakyné
Original Assignee
Károly Welther
Ralph Berkin
Károlyné Welther
Kálmán Kovács
Térfalvi Zsuzsa Perlakyné
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Károly Welther, Ralph Berkin, Károlyné Welther, Kálmán Kovács, Térfalvi Zsuzsa Perlakyné filed Critical Károly Welther
Priority to HU9401883A priority Critical patent/HUT77963A/en
Publication of HU9401883D0 publication Critical patent/HU9401883D0/en
Publication of HUT77963A publication Critical patent/HUT77963A/en

Links

Abstract

Sulphuric and nitric acid solutions containing small amounts of molybdenum and tungsten are reacted with phosphates in a ratio of 1:5-20 per metal, after the solution comprising 1.5-3.5 hydrogen ion/mol has been concentrated. The reaction takes place at 40-95 deg. C. The metals precipitate with ammonium and the 50-95% hetero-poly-acid is separated.
HU9401883A 1994-06-22 1994-06-22 Method and apparatus for the treatment of acidic solutions containing molybdenum and/or tungsten and originating in heating-filament production HUT77963A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HU9401883A HUT77963A (en) 1994-06-22 1994-06-22 Method and apparatus for the treatment of acidic solutions containing molybdenum and/or tungsten and originating in heating-filament production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU9401883A HUT77963A (en) 1994-06-22 1994-06-22 Method and apparatus for the treatment of acidic solutions containing molybdenum and/or tungsten and originating in heating-filament production

Publications (2)

Publication Number Publication Date
HU9401883D0 HU9401883D0 (en) 1994-09-28
HUT77963A true HUT77963A (en) 1998-12-28

Family

ID=10985364

Family Applications (1)

Application Number Title Priority Date Filing Date
HU9401883A HUT77963A (en) 1994-06-22 1994-06-22 Method and apparatus for the treatment of acidic solutions containing molybdenum and/or tungsten and originating in heating-filament production

Country Status (1)

Country Link
HU (1) HUT77963A (en)

Also Published As

Publication number Publication date
HU9401883D0 (en) 1994-09-28

Similar Documents

Publication Publication Date Title
TW342344B (en) Process and plant for extraction or recovery of acids from solutions of these acids
CA2052009A1 (en) Method for producing hydrogen peroxide
CA2058731A1 (en) Method for producing hydrogen peroxide
CA2234853A1 (en) Process for improving productivity of a carbonylation catalyst solution by removing corrosion metals
EP1013800A3 (en) Process for pickling stainless steel
JPS6182888A (en) Treatment of waste water
CA2352039A1 (en) Treatment of water containing organic wastes with ammonium nitrate
EP1050605A3 (en) Process for pickling stainless steel in the absence of nitric acid and in the presence of chloride ions
HUT77963A (en) Method and apparatus for the treatment of acidic solutions containing molybdenum and/or tungsten and originating in heating-filament production
GR3030180T3 (en) Treatment of a chemical
US4033838A (en) Recovery of copper from waste nitrate liquors by electrolysis
US4636368A (en) Stabilized acidic aqueous solutions containing hydrogen peroxide and metallic ions and processes
JPS6472915A (en) Production of ammonia and sulfur dioxide
ZA9710983B (en) Method for pickling products in a metal alloy containing iron and in titanium and alloys thereof.
DE3060672D1 (en) Process for removing organic impurities from phosphoric acid
CA2156689A1 (en) Process of Producing Chlorine Dioxide
Edwards et al. Reaction rates for nucleophiles with cyanogen chloride: Comparison with two other digonal carbon compounds
GB9316641D0 (en) Chemical process
KR100293202B1 (en) REGENERATION METHOD OF WASTE NOx GAS GENERATED WHEN PICKLING STAINLESS STEEL WITH MIXED ACID OF SULFURIC ACID AND HYDROGEN PEROXIDE
Cecal USE OF BETA-RAY BACKSCATTERING IN THE STUDY OF THE CORROSION KINETICS OF STEEL SAMPLES IN ACID MEDIA
Cupertino et al. Chemical process for the recovery of metal from an organic complex
UA29233A (en) Solution for the dimentional relief etching at the steel
ES8706572A1 (en) Process for the production of ammonium phosphates from phosphates rocks.
EP1113985A4 (en) Production of nitrous oxide
JPH037760B2 (en)

Legal Events

Date Code Title Description
DFC4 Cancellation of temporary prot. due to refusal