NO155399B - USE OF ALUMINUM CASTLE ALLOYS AND ALUMINUM KNITTED ALLOYS WASTE FOR THE MANUFACTURE OF ROLLING HALF PRODUCTS. - Google Patents
USE OF ALUMINUM CASTLE ALLOYS AND ALUMINUM KNITTED ALLOYS WASTE FOR THE MANUFACTURE OF ROLLING HALF PRODUCTS. Download PDFInfo
- Publication number
- NO155399B NO155399B NO803675A NO803675A NO155399B NO 155399 B NO155399 B NO 155399B NO 803675 A NO803675 A NO 803675A NO 803675 A NO803675 A NO 803675A NO 155399 B NO155399 B NO 155399B
- Authority
- NO
- Norway
- Prior art keywords
- aluminum
- alloys
- acid
- alginic acid
- castle
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 229910052782 aluminium Inorganic materials 0.000 title abstract 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract 7
- 229910045601 alloy Inorganic materials 0.000 title abstract 5
- 239000000956 alloy Substances 0.000 title abstract 5
- 239000002699 waste material Substances 0.000 title 1
- 235000010443 alginic acid Nutrition 0.000 claims description 34
- 229920000615 alginic acid Polymers 0.000 claims description 34
- 239000000783 alginic acid Substances 0.000 claims description 21
- 229960001126 alginic acid Drugs 0.000 claims description 21
- 150000004781 alginic acids Chemical class 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 16
- 241000512259 Ascophyllum nodosum Species 0.000 claims description 11
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 claims description 10
- 241001474374 Blennius Species 0.000 claims description 10
- 229940072056 alginate Drugs 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 7
- 238000001556 precipitation Methods 0.000 claims description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 4
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 2
- 235000011164 potassium chloride Nutrition 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims 1
- 230000001376 precipitating effect Effects 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract 2
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 abstract 1
- 229910052797 bismuth Inorganic materials 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000013067 intermediate product Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052745 lead Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910052718 tin Inorganic materials 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000003916 acid precipitation Methods 0.000 description 3
- 235000013479 Amaranthus retroflexus Nutrition 0.000 description 2
- 244000055702 Amaranthus viridis Species 0.000 description 2
- 235000004135 Amaranthus viridis Nutrition 0.000 description 2
- 235000009344 Chenopodium album Nutrition 0.000 description 2
- 235000005484 Chenopodium berlandieri Nutrition 0.000 description 2
- 235000009332 Chenopodium rubrum Nutrition 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241001466453 Laminaria Species 0.000 description 1
- 241001598113 Laminaria digitata Species 0.000 description 1
- 241000296380 Laminaria hyperborea Species 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- VDDRNXHIJFHESZ-UHFFFAOYSA-L calcium dichloride hydrochloride Chemical compound Cl.[Cl-].[Cl-].[Ca+2] VDDRNXHIJFHESZ-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Continuous Casting (AREA)
- Forging (AREA)
- Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
Abstract
Description
Fremgangsmåte ved fremstilling av alginater. Procedure for the production of alginates.
Den foreliggende oppfinnelse angår i The present invention concerns i
hovedsaken et trinn i fremstillingen av alginat fra Ascophyllum nodosum, nemlig utfelling av alginsyre fra alginatekstrakten. Fremgangsmåten som skal beskrives i det følgende, medfører betydelige for-deler i forhold til tidligere kjent teknikk. essentially a step in the production of alginate from Ascophyllum nodosum, namely precipitation of alginic acid from the alginate extract. The procedure to be described in the following entails significant advantages compared to previously known technology.
Fremgangsmåten til fremstilling av The method of manufacture of
alginsyre er første gang beskrevet i britisk patent nr. 142 av Stanford i 1881, mens en rekke variasjoner er kommet senere. Av de mest kjente er Le Gloahec-Herters prosess i henhold til U.S. patent nr. 2 128 551 og alginic acid is first described in British patent no. 142 by Stanford in 1881, while a number of variations have come later. Of the best known, the Le Gloahec-Herter process according to U.S. Pat. patent no. 2 128 551 and
Greens prosess som er beskrevet i U.S. patent nr. 2 036 934. Etter Greens prosess felles alginatet etter den alkaliske ekstrak-sjon med kalsiumklorid, og etter Le Gloahec-Herters prosess utføres fellingen med syre. Ingen av disse prosessene er imidler-tid spesielt beregnet for eller egnet for Ascophyllum nodosum (grisetang). Bash-ford et al beskriver i J. Soc. Chem. Ind., 69 Green's process described in U.S. Pat. patent no. 2 036 934. According to Green's process, the alginate is precipitated after the alkaline extraction with calcium chloride, and according to Le Gloahec-Herter's process, the precipitation is carried out with acid. However, none of these processes are specifically intended for or suitable for Ascophyllum nodosum (pig seaweed). Bashford et al describe in J. Soc. Chem. Ind., 69
(1950) 337 en metode til fremstilling av alginat fra grisetang og fingertare. Her felles alginatekstrakten med en saltsur kalsiumkloridoppløsning. (1950) 337 a method for the production of alginate from pig seaweed and finger kelp. Here, the alginate extract is combined with a hydrochloric acid calcium chloride solution.
Nyere undersøkelser har vist at løse-ligheten ved lav pH er vesentlig større More recent investigations have shown that the solubility at low pH is significantly greater
for alginsyre fra grisetang enn fra laminaria-artene Laminaria digitata (fingertare) og Laminaria hyperborea (stortare). Fel-ling av alginsyre fra grisetang på vanlig måte med syre gir en løs alginsyre-gel som er praktisk talt umulig å filtrere. Denne vanskeligheten er meget fremtredende for alginsyre fra grisetang og andre tangarter, for alginic acid from pig seaweed than from the laminaria species Laminaria digitata (finger kelp) and Laminaria hyperborea (big kelp). Precipitation of alginic acid from pig seaweed in the usual way with acid gives a loose alginic acid gel which is practically impossible to filter. This difficulty is very prominent for alginic acid from pigweed and other seaweed species,
men representerer ikke noe problem ved syrefelling av alginsyre fra f. eks. tare-artene fingertare og stortare. but does not represent any problem when acid precipitation of alginic acid from e.g. the kelp species finger kelp and large kelp.
Ved hjelp av foreliggende fremgangsmåte unngåes de nevnte ulemper ved fremstilling av alginater fra grisetang og andre tangarter. With the help of the present method, the aforementioned disadvantages are avoided when producing alginates from pig seaweed and other types of seaweed.
Det har nemlig vist seg at oppløselig-heten av alginsyre fra grisetang kan ned-markert grad ved utfelling av det ekstra-settes og filtrerbarheten av den bedres i herte alginat under tilsetning av syre i en slik mengde at den erholdte alginsyresus-pensjon får en pH-verdi innenfor bestemte grenser, nemlig i området 1,6—2,5, når man før eller etter fellingen tilsetter et oppløse-lig kaliumsalt til alginatekstrakten. Namely, it has been shown that the solubility of alginic acid from pig seaweed can be reduced to a marked degree by precipitation of the extra set and its filterability is improved in hardened alginate by adding acid in such an amount that the alginic acid suspension obtained has a pH -value within certain limits, namely in the range 1.6-2.5, when a soluble potassium salt is added to the alginate extract before or after precipitation.
Ved å arbeide på denne måte får man en fibrig tungtoppløselig alginsyre som er meget lett å filtrere By working in this way, you get a fibrous, poorly soluble alginic acid which is very easy to filter
Grunnen til at alginsyre fra grisetang oppfører seg så spesielt synes å være at denne alginsyre lag seg ved fraksjonering skille i en komponent som er helt løselig i syre og små saltmengder, og en annen komponent som oppfører seg normalt (dvs. har samme løselighetsforhold som alginsyre fra fingertare). Ved å tilsette salt har det så vist seg at den løselige komponent blir saltet ut og blir uløselig. The reason why alginic acid from pig seaweed behaves in such a special way seems to be that this alginic acid separates during fractionation into a component that is completely soluble in acid and small amounts of salt, and another component that behaves normally (i.e. has the same solubility ratio as alginic acid from finger kelp). By adding salt, it has been shown that the soluble component is salted out and becomes insoluble.
De beste resultater ved fremgangsmåten ifølge oppfinnelsen oppnåes når syreutfellingen utføres ved en pH mellom 1,7 og 2,3. Etter avpressing vil den frem-stilte alginsyre direkte kunne omsettes til alginater etter vanlig kjente metoder. Det er meget overraskende at kaliumioner vir-ker langt sterkere enn andre énverdige ioner f. eks. natrium. En slik forskjell i virkning på alginsyre mellom disse ioner er ikke kjent tidligere. The best results with the method according to the invention are obtained when the acid precipitation is carried out at a pH between 1.7 and 2.3. After pressing, the produced alginic acid can be directly converted into alginates according to commonly known methods. It is very surprising that potassium ions act far more strongly than other monovalent ions, e.g. sodium. Such a difference in effect on alginic acid between these ions has not been previously known.
Ved fremgangsmåten har det vist seg særlig fordelaktig at kaliumsaltkonsentra-sjonen er minst 0,07N. In the method, it has proven particularly advantageous that the potassium salt concentration is at least 0.07N.
Det foretrekkes at fremgangsmåten utføres ved en temperatur lavere enn 30°C, og særlig foretrukket er 10—15°C. It is preferred that the method is carried out at a temperature lower than 30°C, and 10-15°C is particularly preferred.
Ved å bruke de anførte fremgangsmå-ter på ekstrakt fra grisetang, vil en oppnå alginsyre av fibrig struktur som lett lar seg filtrere. Utbyttet vil også bli bedre enn ved vanlig syrefelling. By using the listed methods on extract from pigweed, alginic acid of a fibrous structure which can be easily filtered will be obtained. The yield will also be better than with normal acid precipitation.
Eksempel. Example.
5 kg tørket Ascophyllum nodosum fra Trondheimsfjorden ble forbehandlet med svovelsyre og ekstrahert med soda. Etter frafiltrering av uløste algerester, ble alginatekstrakten tilsatt kaliumklorid til. en konsentrasjon på 0,1N og felt med svovelsyre ved pH 2,1—2,0. Det ble oppnådd en 5 kg of dried Ascophyllum nodosum from the Trondheimsfjord was pre-treated with sulfuric acid and extracted with soda. After filtering off undissolved algae residues, potassium chloride was added to the alginate extract. a concentration of 0.1N and field with sulfuric acid at pH 2.1-2.0. A was achieved
fibrig alginsyre som etter frafiltrering in-neholdt 5 pst. tørrstoff. Alginsyren ble omsatt med soda. Utbyttet ble 870 g natri-umalginat. fibrous alginic acid which, after filtration, contained 5 percent dry matter. The alginic acid was reacted with soda. The yield was 870 g of sodium alginate.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3008358A DE3008358C2 (en) | 1980-03-05 | 1980-03-05 | Use of old scrap mixed from cast aluminum alloys and wrought aluminum alloys for the production of semi-finished rolled products |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO803675L NO803675L (en) | 1981-09-07 |
| NO155399B true NO155399B (en) | 1986-12-15 |
| NO155399C NO155399C (en) | 1987-03-25 |
Family
ID=6096289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO803675A NO155399C (en) | 1980-03-05 | 1980-12-04 | USE OF ALUMINUM CASTLE ALLOYS AND ALUMINUM KNITTED ALLOYS WASTE FOR THE MANUFACTURE OF ROLLING HALF PRODUCTS. |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0035055B1 (en) |
| JP (1) | JPS6014828B2 (en) |
| AT (1) | ATE4128T1 (en) |
| CA (1) | CA1176084A (en) |
| DE (1) | DE3008358C2 (en) |
| NO (1) | NO155399C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0069026B1 (en) * | 1981-05-15 | 1985-08-28 | Cegedur Societe De Transformation De L'aluminium Pechiney | Method for the extrusion characteristics of aluminium alloys of the al-mg-si-type |
| JPS63117606U (en) * | 1987-01-27 | 1988-07-29 | ||
| US6004409A (en) * | 1997-01-24 | 1999-12-21 | Kaiser Aluminum & Chemical Corporation | Production of high quality machinable tolling plate using brazing sheet scrap |
| US6607615B1 (en) | 1997-10-31 | 2003-08-19 | The Furukawa Electric Co., Ltd. | Extruded material of aluminum alloy for structural members of automobile body and method of manufacturing the same |
| JP3403333B2 (en) * | 1998-05-15 | 2003-05-06 | 古河電気工業株式会社 | Aluminum plate material for automobile and its manufacturing method |
| CN102492878A (en) * | 2011-11-15 | 2012-06-13 | 徐艳 | Production method for aluminum alloy bicycle frame pipe for electric bicycle |
| CN112210700B (en) * | 2020-10-09 | 2021-09-17 | 上海华峰铝业股份有限公司 | Al-Mg-Mn-Si alloy, alloy plate strip and preparation method thereof |
| WO2023169657A1 (en) * | 2022-03-08 | 2023-09-14 | Montanuniversität Leoben | Semi-finished product made of wrought aluminium alloy, the production and use thereof, and a product produced therefrom |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2156932C3 (en) * | 1971-11-16 | 1978-11-16 | Southwire Co., Carrollton, Ga. (V.St.A.) | Process for the melt-metallurgical production of conductive aluminum alloys |
| GB1529305A (en) * | 1974-11-15 | 1978-10-18 | Alcan Res & Dev | Method of producing metal alloy products |
| DE2647513A1 (en) * | 1976-10-21 | 1978-04-27 | Guenther Dipl Ing Fritz | Aluminium sepd. from ferrous scrap - by melting the aluminium and magnetic removal of iron below its Curie temp. |
| DE2701452C2 (en) * | 1977-01-14 | 1984-06-28 | The Glacier Metal Co. Ltd., London | Process for the recovery of at least one metal layer from multilayer waste material |
| US4169728A (en) * | 1978-02-09 | 1979-10-02 | Mitsubishi Kinzoku Kabushiki Kaisha | Corrosion resistant bright aluminum alloy for die-casting |
-
1980
- 1980-03-05 DE DE3008358A patent/DE3008358C2/en not_active Expired
- 1980-11-12 EP EP80106968A patent/EP0035055B1/en not_active Expired
- 1980-11-12 AT AT80106968T patent/ATE4128T1/en not_active IP Right Cessation
- 1980-12-04 NO NO803675A patent/NO155399C/en unknown
-
1981
- 1981-03-03 CA CA000372238A patent/CA1176084A/en not_active Expired
- 1981-03-05 JP JP56030606A patent/JPS6014828B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NO155399C (en) | 1987-03-25 |
| JPS6014828B2 (en) | 1985-04-16 |
| DE3008358B1 (en) | 1980-12-04 |
| CA1176084A (en) | 1984-10-16 |
| EP0035055B1 (en) | 1983-07-13 |
| JPS56139667A (en) | 1981-10-31 |
| DE3008358C2 (en) | 1981-07-09 |
| ATE4128T1 (en) | 1983-07-15 |
| NO803675L (en) | 1981-09-07 |
| EP0035055A1 (en) | 1981-09-09 |
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