ES2177307T3 - Procedimiento de control granulometrico en una cadena de descomposicion de circuito bayer, que incluye una fase de aglomeracion. - Google Patents
Procedimiento de control granulometrico en una cadena de descomposicion de circuito bayer, que incluye una fase de aglomeracion.Info
- Publication number
- ES2177307T3 ES2177307T3 ES99936726T ES99936726T ES2177307T3 ES 2177307 T3 ES2177307 T3 ES 2177307T3 ES 99936726 T ES99936726 T ES 99936726T ES 99936726 T ES99936726 T ES 99936726T ES 2177307 T3 ES2177307 T3 ES 2177307T3
- Authority
- ES
- Spain
- Prior art keywords
- micram
- hydrate
- sifting
- phase
- sifted
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 238000000354 decomposition reaction Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- 238000005259 measurement Methods 0.000 abstract 3
- 238000005096 rolling process Methods 0.000 abstract 3
- 238000007873 sieving Methods 0.000 abstract 3
- 230000000977 initiatory effect Effects 0.000 abstract 2
- 230000037452 priming Effects 0.000 abstract 2
- 238000005054 agglomeration Methods 0.000 abstract 1
- 230000002776 aggregation Effects 0.000 abstract 1
- 238000009826 distribution Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
Classifications
-
- 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
- C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
- C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/50—Agglomerated particles
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Disintegrating Or Milling (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Cereal-Derived Products (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Developing Agents For Electrophotography (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Basic Packing Technique (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Lubricants (AREA)
- Catalysts (AREA)
- Treatment Of Sludge (AREA)
Abstract
Procedimiento de dirección de la descomposición de un circuito BAYER, que incluye una fase preliminar de aglomeración (A), una fase de cebado (N) y una fase de clasificación (PT; ST; TT) en el que la calidad granulométrica del hidrato producido está seguida de una medida (M2) del cernido a X2 micram del hidrato en rodamiento en los tanques de cebado, caracterizado porque comprende: a) una etapa de preparación, realizada de una vez por todas, por una parte destinada a establecer una relación R, en intensidad y en tiempo, entre el cernido a X1 micram y el cernido a X2 micram en el hidrato en rodamiento, donde X1 es estrictamente inferior a X2, y por otra parte a definir, a partir del intervalo de variación máxima autorizada sobre los valores del cernido a X2 micram, umbrales iniciadores sobre el valor del cernido a X1 micram; b) la dirección propiamente dicha del procedimiento, efectuada durante todo el tiempo de funcionamiento de la instalación, que comprende, además de la medida diaria (M2)del cernido a X2 micram y de la puesta al día regular de la correlación entre el susodicho cernido a X2 micram y la repartición granulométrica del hidrato producido, una medida diaria (M1) del cernido a X1 micram del hidrato en rodamiento y la puesta al día regular de la relación R entre el susodicho cernido a X1 micram y el susodicho cernido a X2 micram, así como el inicio de una acción correctora sobre la suspensión al principio de la descomposición cuando el valor medido del cernido a X1 micram alcanza uno de los umbrales iniciadores que han sido establecidos durante la etapa preliminar y han sido puestos al día con regularidad.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9811111A FR2782710B1 (fr) | 1998-09-02 | 1998-09-02 | Procede de controle granulometrique dans une chaine de decomposition du circuit bayer, incluant une phase d'agglomeration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2177307T3 true ES2177307T3 (es) | 2002-12-01 |
Family
ID=9530155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES99936726T Expired - Lifetime ES2177307T3 (es) | 1998-09-02 | 1999-08-12 | Procedimiento de control granulometrico en una cadena de descomposicion de circuito bayer, que incluye una fase de aglomeracion. |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US6878357B1 (es) |
| EP (1) | EP1119521B1 (es) |
| CN (1) | CN1156400C (es) |
| AT (1) | ATE218512T1 (es) |
| AU (1) | AU755100B2 (es) |
| BR (1) | BR9913372A (es) |
| CA (1) | CA2342712C (es) |
| DE (1) | DE69901724T2 (es) |
| ES (1) | ES2177307T3 (es) |
| FR (1) | FR2782710B1 (es) |
| HU (1) | HU224712B1 (es) |
| OA (1) | OA11646A (es) |
| UA (1) | UA71923C2 (es) |
| WO (1) | WO2000014015A1 (es) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108248063A (zh) | 2012-01-25 | 2018-07-06 | 赫克赛尔控股有限责任公司 | 层压件的改进或关于层压件的改进 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4150952A (en) * | 1977-07-21 | 1979-04-24 | Ormet Corporation | Method of controlling the amount of seed material in the precipitation stage of the Bayer process |
| CH644332A5 (de) * | 1978-11-07 | 1984-07-31 | Alusuisse | Verfahren zur herstellung von grobem aluminiumhydroxid. |
| FR2551429B2 (fr) | 1983-09-05 | 1985-10-18 | Pechiney Aluminium | Procede de production d'un trihydroxyde d'aluminium de granulometrie grosse et reguliere |
| US4511542A (en) * | 1984-05-24 | 1985-04-16 | Kaiser Aluminum & Chemical Corporation | Bayer process production of alumina hydrate |
| FR2591581B1 (fr) | 1985-12-17 | 1990-05-25 | Pechiney Aluminium | Procede d'obtention avec une forte productivite de trihydroxyde d'aluminium, de haute purete et de diametre median inferieur a 4 micrometres, regle a la demande. |
| FR2598701B1 (fr) | 1986-05-15 | 1988-08-05 | Pechiney Aluminium | Procede et dispositif de decomposition de liqueur d'aluminate de sodium pour la production d'alumine |
| US4822593A (en) * | 1986-12-11 | 1989-04-18 | Aluminum Company Of America | Control of form of crystal precipitation of aluminum hydroxide using cosolvents and varying caustic concentration |
| US5158577A (en) * | 1990-02-14 | 1992-10-27 | Alcan International Limited | Process for precipitating alumina from Bayer process liquor |
| US5163973A (en) * | 1990-02-14 | 1992-11-17 | Alcan Internatinal Limited | Process for producing low soda alumina |
| FR2709302B1 (fr) * | 1993-08-26 | 1995-09-22 | Pechiney Aluminium | Procédé de fabrication de trihydrate d'alumine à teneur en sodium et granulométrie réglées. |
| DE69511513T2 (de) * | 1994-11-30 | 1999-11-25 | Billiton Intellectual Pty B V | Verfahren zur Ausfällung von Aluminiumhydroxid aus einer übersättigten Natriumaluminatlösung |
| US6217622B1 (en) * | 1998-10-22 | 2001-04-17 | Alcan International Limited | Method and apparatus for precipitating and classifying solids in high concentrations |
-
1998
- 1998-09-02 FR FR9811111A patent/FR2782710B1/fr not_active Expired - Fee Related
-
1999
- 1999-08-12 BR BR9913372-5A patent/BR9913372A/pt not_active IP Right Cessation
- 1999-08-12 AU AU51718/99A patent/AU755100B2/en not_active Ceased
- 1999-08-12 OA OA1200100053A patent/OA11646A/fr unknown
- 1999-08-12 WO PCT/FR1999/001975 patent/WO2000014015A1/fr active IP Right Grant
- 1999-08-12 ES ES99936726T patent/ES2177307T3/es not_active Expired - Lifetime
- 1999-08-12 CA CA002342712A patent/CA2342712C/fr not_active Expired - Fee Related
- 1999-08-12 HU HU0103972A patent/HU224712B1/hu not_active IP Right Cessation
- 1999-08-12 EP EP99936726A patent/EP1119521B1/fr not_active Expired - Lifetime
- 1999-08-12 AT AT99936726T patent/ATE218512T1/de not_active IP Right Cessation
- 1999-08-12 CN CNB998105694A patent/CN1156400C/zh not_active Expired - Fee Related
- 1999-08-12 US US09/744,237 patent/US6878357B1/en not_active Expired - Fee Related
- 1999-08-12 DE DE69901724T patent/DE69901724T2/de not_active Expired - Lifetime
- 1999-12-08 UA UA2001032115A patent/UA71923C2/uk unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN1156400C (zh) | 2004-07-07 |
| CA2342712C (fr) | 2009-01-27 |
| WO2000014015A1 (fr) | 2000-03-16 |
| HUP0103972A3 (en) | 2003-05-28 |
| BR9913372A (pt) | 2001-06-05 |
| ATE218512T1 (de) | 2002-06-15 |
| HUP0103972A2 (hu) | 2002-02-28 |
| DE69901724D1 (de) | 2002-07-11 |
| EP1119521A1 (fr) | 2001-08-01 |
| OA11646A (fr) | 2004-11-22 |
| FR2782710B1 (fr) | 2000-10-06 |
| EP1119521B1 (fr) | 2002-06-05 |
| UA71923C2 (en) | 2005-01-17 |
| AU755100B2 (en) | 2002-12-05 |
| FR2782710A1 (fr) | 2000-03-03 |
| HU224712B1 (en) | 2006-01-30 |
| DE69901724T2 (de) | 2003-01-30 |
| CA2342712A1 (fr) | 2000-03-16 |
| US6878357B1 (en) | 2005-04-12 |
| CN1316978A (zh) | 2001-10-10 |
| AU5171899A (en) | 2000-03-27 |
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