SU1668305A1 - Method of silver extraction - Google Patents
Method of silver extraction Download PDFInfo
- Publication number
- SU1668305A1 SU1668305A1 SU894643377A SU4643377A SU1668305A1 SU 1668305 A1 SU1668305 A1 SU 1668305A1 SU 894643377 A SU894643377 A SU 894643377A SU 4643377 A SU4643377 A SU 4643377A SU 1668305 A1 SU1668305 A1 SU 1668305A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- silver
- solution
- amount
- mixture
- aluminum
- Prior art date
Links
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 16
- 239000004332 silver Substances 0.000 title claims abstract description 16
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000000605 extraction Methods 0.000 title description 3
- 239000000203 mixture Substances 0.000 claims abstract description 6
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 4
- -1 alkali metal salt Chemical class 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 3
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000011084 recovery Methods 0.000 claims abstract 3
- 150000003839 salts Chemical class 0.000 claims description 5
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 4
- 239000000701 coagulant Substances 0.000 claims description 3
- 239000003643 water by type Substances 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 239000002244 precipitate Substances 0.000 abstract description 4
- 229910000358 iron sulfate Inorganic materials 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C11/00—Auxiliary processes in photography
- G03C11/24—Removing emulsion from waste photographic material; Recovery of photosensitive or other substances
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Paper (AREA)
Abstract
Изобретение относитс к способам извлечени серебра из отработанных растворов фото-или кинопроизводства и позвол ет повысить степень его извлечени . По предлагаемому способу в исходный раствор до или после его обработки коагул нтом (сульфатом алюмини или железа III) ввод т аммофос или соль щелочного металла или аммони фосфорных кислот, или их смесь в количестве 0,004 - 1,4 г/л при 4 - 95°С и PH = 3,7 - 7,5. После этого раствор отстаивают и отдел ют образовавшийс осадок. Остаточное содержание серебра в растворе составл ет 0,8 - 3,8 мг/л, т.е. способ обеспечивает степень извлечени серебра ъ 99,5%. 2 з.п.ф-лы, 1 табл.The invention relates to methods for extracting silver from spent photo or film production solutions and allows increasing the degree of its recovery. According to the proposed method, ammophos or an alkali metal salt or ammonium phosphoric acid, or a mixture of them in an amount of 0.004 - 1.4 g / l at 4 - 95 °, is introduced into the initial solution before or after its treatment with coagulum (aluminum or iron sulfate III). C and PH = 3.7 - 7.5. After that, the solution is settled and the precipitate is separated. The residual silver content in the solution is 0.8–3.8 mg / l, i.e. The method provides silver recovery rate of 99.5%. 2 hp ff, 1 tab.
Description
Изобретение относитс к способам извлечени серебра из отходов кинофотопро- изводстеа.The invention relates to methods for recovering silver from film wastes.
Целью изобретени вл етс повышение степени извлечени серебра.The aim of the invention is to increase the degree of extraction of silver.
Способ заключаетс в том. что в сереб- росодержащие воды кино- или фотопроизводства до или после обработки его коагул нтом ввод т аммофос или соли щелочного металла, или аммони фосфорных кислот, или их смеси в количестве 0,004-1,4 г/л при 4-95°С и рН 3,7 - 7,5. При этом в качестве коагул нта используют сульфат алюмини или железа (II) или их смесь в количестве 0,025-5,5 г/л. После этого раствор отстаивают в течение 20-300 мин и отдел ют образовавшийс осадок. The way is. that ammophos or alkali metal salts, or ammonium phosphoric acids, or their mixtures in an amount of 0.004-1.4 g / l at 4-95 ° C and pH 3.7 - 7.5. In this case, aluminum or iron (II) sulfate or their mixture in the amount of 0.025-5.5 g / l is used as a coagulant. Thereafter, the solution is allowed to settle for 20-300 minutes and the precipitate formed is separated.
При такой обработке происходит взаимодействие фосфорсодержащих солей с АЬ(8Оф и Г-еЗСм, сопровождающеес образованием двойных или тройных солей фосфорных кислот , содержащих катионы щелочных металлов (аммони ), алюмини (железа) и серебра одновременно. Образующиес серебросо- держащие соли нерастворимы в воде.In this treatment, phosphorus-containing salts interact with AB (8OF and G-eZSm, accompanied by the formation of double or triple salts of phosphoric acids containing alkali metal (ammonium), aluminum (iron) and silver cations simultaneously. The resulting silver-containing salts are insoluble in water.
Приме р. В 1л серебросодержащей пульпы, полученной в лабораторных услови х при обработке 0,01%-ным водным раствором ферментного препарата 40 г непро вленных кинофотолент и их промывке , рН 7, при 12°С, ввод т в виде водного раствора 0,2 г соли NaaPO/j, начинают перемешивание и добавл ют 1,4 г сернокислого железа (пересчет на безводное вещество в NaaP04 12Н2О и FeSO4 7Н20. Тщательно перемешивают и в течение 80 мин оставл ют дл коагул ции и отстаивани осадка. После отстаивани маточный раствор отдел ют от осадка (сливают), осадок сушат и Используют по назначению.Primer p. In 1 liter of silver-containing pulp, obtained in the laboratory when processing a 0.01% aqueous solution of an enzyme preparation, 40 g of unwound film films and their washing, pH 7, at 12 ° C, are introduced in the form of an aqueous solution of 0.2 g of salt NaaPO / j, start stirring and add 1.4 g of ferrous sulfate (recalculated to anhydrous substance in NaaP04 12Н2О and FeSO4 7Н20. Mix thoroughly and leave for 80 minutes to coagulate and settle the precipitate. After settling, the mother liquor is separated from sediment (drained), the precipitate is dried and used as directed.
Остаточное содержание серебра в маточном растворе 2.1 мг/л. его рН 5.The residual silver content in the stock solution is 2.1 mg / l. its pH is 5.
Результаты остальных опытов представлены в таблице.The results of the other experiments are presented in the table.
ЁYo
ON ON 00 Сл)ON ON 00 Sl)
О СЛAbout SL
Как следует из данных, представленных в таблице, проведение процесса при предлагаемых услови х позвол ет снизить остаточное содержание серебра в серебро- содержащих водах до 0,8-3,8 мг/л, т.е. по- высить степень извлечени его до 99,5-99,97% против 91,6-94,8% по известному способу.As follows from the data presented in the table, carrying out the process under the proposed conditions allows reducing the residual silver content in silver-containing waters to 0.8–3.8 mg / l, i.e. to increase the degree of its extraction to 99.5-99.97% against 91.6-94.8% by a known method.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894643377A SU1668305A1 (en) | 1989-01-30 | 1989-01-30 | Method of silver extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894643377A SU1668305A1 (en) | 1989-01-30 | 1989-01-30 | Method of silver extraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1668305A1 true SU1668305A1 (en) | 1991-08-07 |
Family
ID=21425519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU894643377A SU1668305A1 (en) | 1989-01-30 | 1989-01-30 | Method of silver extraction |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1668305A1 (en) |
-
1989
- 1989-01-30 SU SU894643377A patent/SU1668305A1/en active
Non-Patent Citations (1)
| Title |
|---|
| РЖХ. 1984, 7И 403. . * |
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