GR1006987B - Production of sodium aluminate with simultaneous recycling of waste of alkaline washing of matrices of aluminum extrusion industries by the use of the existing washing equipment. - Google Patents

Production of sodium aluminate with simultaneous recycling of waste of alkaline washing of matrices of aluminum extrusion industries by the use of the existing washing equipment.

Info

Publication number
GR1006987B
GR1006987B GR20090100427A GR20090100427A GR1006987B GR 1006987 B GR1006987 B GR 1006987B GR 20090100427 A GR20090100427 A GR 20090100427A GR 20090100427 A GR20090100427 A GR 20090100427A GR 1006987 B GR1006987 B GR 1006987B
Authority
GR
Greece
Prior art keywords
sodium
waste
washing
sodium aluminate
equipment
Prior art date
Application number
GR20090100427A
Other languages
Greek (el)
Inventor
Νικολαος Νταϊλiανης
Original Assignee
Νταϊλιανης, Νικολαος
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 Νταϊλιανης, Νικολαος filed Critical Νταϊλιανης, Νικολαος
Priority to GR20090100427A priority Critical patent/GR1006987B/en
Publication of GR1006987B publication Critical patent/GR1006987B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/10—Etching compositions
    • C23F1/14—Aqueous compositions
    • C23F1/32—Alkaline compositions
    • C23F1/36—Alkaline compositions for etching aluminium or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
    • B21C35/06—Cleaning dies, ducts, containers or mandrels
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C01F7/0606—Making-up the alkali hydroxide solution from recycled spent liquor
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/46—Regeneration of etching compositions
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/36—Regeneration of waste pickling liquors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

A new, simple recycling method of alkaline waste from the washing-purification of matrices of the aluminum extrusion industries and with a simple necessary additional equipment. The method uses the same boiler-reactor of washing with a suitable adjustment of a control device for the level of water, temperature and density of the solution. From these easily and constantly measured values the content of the solution in caustic sodium and alumina arises that is dissolved constantly in the thermal caustic sodium, producing soluble sodium aluminate through a pre-drawn type of correlation of parameters. When the solution reaches to a specific limit from which the continuation of washing is not of useful in terms of time - a point which is detected easily and accurately by the assistance of a measurement device – resulting in the optimum exploitation of sodium as well as the avoidance of saturation with a subsequent problems, abundant aluminum is added by the use of exactly the same equipment until the desired content of sodium aluminate is achieved in sodium and alumina. The product is pumped in a simple settlement-storage tank from where the finished product of sodium aluminate comes out clear with the desired specifications and of high additional value. The method, on the one hand, renders profitable a neutralization and management process of a difficult waste that, on the other, may constitute the main source of strong alkaline current of waste, whereas at the same time it does not require any serious or costly addition of equipment in the already existing equipment. The produced sodium alkaline is of acceptable content and purity, suitable for all uses (such as: accelerator of cement coagulation, water and waste processing means, additive of paper industry etc.).
GR20090100427A 2009-07-30 2009-07-30 Production of sodium aluminate with simultaneous recycling of waste of alkaline washing of matrices of aluminum extrusion industries by the use of the existing washing equipment. GR1006987B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GR20090100427A GR1006987B (en) 2009-07-30 2009-07-30 Production of sodium aluminate with simultaneous recycling of waste of alkaline washing of matrices of aluminum extrusion industries by the use of the existing washing equipment.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR20090100427A GR1006987B (en) 2009-07-30 2009-07-30 Production of sodium aluminate with simultaneous recycling of waste of alkaline washing of matrices of aluminum extrusion industries by the use of the existing washing equipment.

Publications (1)

Publication Number Publication Date
GR1006987B true GR1006987B (en) 2010-09-27

Family

ID=42232733

Family Applications (1)

Application Number Title Priority Date Filing Date
GR20090100427A GR1006987B (en) 2009-07-30 2009-07-30 Production of sodium aluminate with simultaneous recycling of waste of alkaline washing of matrices of aluminum extrusion industries by the use of the existing washing equipment.

Country Status (1)

Country Link
GR (1) GR1006987B (en)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975041A (en) * 1956-08-06 1961-03-14 Purex Corp Ltd Method for etching aluminum and aluminum alloy bodies
US3607482A (en) * 1969-08-11 1971-09-21 Wilson & Co Process of regeneration of metal treating solutions
US4136026A (en) * 1977-11-23 1979-01-23 Aluminum Company Of America Caustic solution having controlled dissolved aluminum content
US4197139A (en) * 1978-08-23 1980-04-08 Hjersted Norman B Process for the reclamation of acid from spent pickle liquor
US4356162A (en) * 1978-04-29 1982-10-26 Dynamit Nobel Ag Method of obtaining alkali aluminates from aqueous solutions
JPS6110027A (en) * 1984-06-22 1986-01-17 Sumitomo Alum Smelt Co Ltd Preparation of crystalline sodium aluminate having low molar ratio
US5091046A (en) * 1990-12-31 1992-02-25 Hunter Robert F Caustic etching of aluminum with matte finish and low waste capability
EP0501458A1 (en) * 1991-02-28 1992-09-02 Fuji Photo Film Co., Ltd. Method for treating a surface of an aluminum substrate for a printing plate
WO1994024050A2 (en) * 1993-04-08 1994-10-27 Giulini Chemie Gmbh Method of purifying soluions containing alkali-metal aluminates
US5512129A (en) * 1990-03-15 1996-04-30 Josef Gartner & Co. Method for regenerating alkaline solutions for pickling aluminum
EP0771760A2 (en) * 1995-11-02 1997-05-07 Fuji Photo Film Co., Ltd. Process for the purification of aluminum hydroxide and process for the surface treatment of aluminum plate utilizing the purification process
WO2001032359A2 (en) * 1999-11-03 2001-05-10 Applied Materials, Inc. Ultrasonic metal finishing involving cavitational erosion
WO2005095674A1 (en) * 2004-03-31 2005-10-13 G.R. Trattamenti Termici - Grtt S.R.L. Process for recovering caustic soda solutions from pickling of aluminum extrusion matrix
EP1932948A1 (en) * 2006-12-07 2008-06-18 Italtecno S.R.L. Apparatus and method for recovering caustic soda from caustic solutions

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975041A (en) * 1956-08-06 1961-03-14 Purex Corp Ltd Method for etching aluminum and aluminum alloy bodies
US3607482A (en) * 1969-08-11 1971-09-21 Wilson & Co Process of regeneration of metal treating solutions
US4136026A (en) * 1977-11-23 1979-01-23 Aluminum Company Of America Caustic solution having controlled dissolved aluminum content
US4356162A (en) * 1978-04-29 1982-10-26 Dynamit Nobel Ag Method of obtaining alkali aluminates from aqueous solutions
US4197139A (en) * 1978-08-23 1980-04-08 Hjersted Norman B Process for the reclamation of acid from spent pickle liquor
JPS6110027A (en) * 1984-06-22 1986-01-17 Sumitomo Alum Smelt Co Ltd Preparation of crystalline sodium aluminate having low molar ratio
US5512129A (en) * 1990-03-15 1996-04-30 Josef Gartner & Co. Method for regenerating alkaline solutions for pickling aluminum
US5091046A (en) * 1990-12-31 1992-02-25 Hunter Robert F Caustic etching of aluminum with matte finish and low waste capability
EP0501458A1 (en) * 1991-02-28 1992-09-02 Fuji Photo Film Co., Ltd. Method for treating a surface of an aluminum substrate for a printing plate
WO1994024050A2 (en) * 1993-04-08 1994-10-27 Giulini Chemie Gmbh Method of purifying soluions containing alkali-metal aluminates
EP0771760A2 (en) * 1995-11-02 1997-05-07 Fuji Photo Film Co., Ltd. Process for the purification of aluminum hydroxide and process for the surface treatment of aluminum plate utilizing the purification process
WO2001032359A2 (en) * 1999-11-03 2001-05-10 Applied Materials, Inc. Ultrasonic metal finishing involving cavitational erosion
WO2005095674A1 (en) * 2004-03-31 2005-10-13 G.R. Trattamenti Termici - Grtt S.R.L. Process for recovering caustic soda solutions from pickling of aluminum extrusion matrix
EP1932948A1 (en) * 2006-12-07 2008-06-18 Italtecno S.R.L. Apparatus and method for recovering caustic soda from caustic solutions

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Legal Events

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PG Patent granted
ML Lapse due to non-payment of fees

Effective date: 20170207

NF Restoration of lapsed right

Effective date: 20170804