CN1038077A - Silver-containing liquid waste reclaims silver process and device thereof - Google Patents
Silver-containing liquid waste reclaims silver process and device thereof Download PDFInfo
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- CN1038077A CN1038077A CN88103130A CN88103130A CN1038077A CN 1038077 A CN1038077 A CN 1038077A CN 88103130 A CN88103130 A CN 88103130A CN 88103130 A CN88103130 A CN 88103130A CN 1038077 A CN1038077 A CN 1038077A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
Reclaim in the silver box aqueduct more than 3 grades horizontal, activation aluminum strip (silk) and silver-containing liquid waste direct reaction through alkaline purification produce precipitated silver, take out precipitated silver then and soak with alkali, get silver granuel, a small amount of borax of infiltration or boric acid melting get final product to such an extent that purity reaches 99.99% silver ingot in the tin grain, this technology that reclaims silver from silver-containing liquid waste is reasonable, easy and simple to handle, apparatus structure is simple, and silver raising recovery rate can be up to 99.9%, with low cost, be convenient to promote.
Description
The invention belongs to the improvement of from silver-containing liquid waste, reclaiming silver process and device
Produce a large amount of argentiferous wasted fixing solutions every days such as hospital, photo studio, photographic film plant, silver is the noble metal of country, reclaims silver and be subjected to great attention both domestic and external from silver-containing liquid waste.U.S. U, S, P4008077(2.15.1977) patent introduced the production technique of using active aluminum to reclaim silver, and this method adopts mechanical process to the processing of active aluminum, and this just needs a cover machining equipment; Can cause silver-colored loss with salt acid treatment precipitated silver, contaminate environment, harmful; It is tower (post) formula that its recovery snow cover is put.Potential difference between argyrol storage tank and tower is big, needs to use the pump extract, and tower (post) formula reactor sieve plate dish easily produces obstruction, and feed liquid opens circuit seriously in the tower, and efficient is low, produces the silver-colored dirty sieve plate hole plug that hardens in the tower, removes operation inconvenience.
Characteristics of the present invention are aluminum strips after alkaline purification destroys the aluminium surface compact oxidation layer to obtain activation and the silver-containing liquid waste reaction produces precipitated silver, use dipping by lye again.Aluminium activation test, aluminium flake (I-VII number), the total area is 4cm
2, place the different alkali lye of basicity to react half a minute respectively, take out and to wash alkali lye, promptly drop into 10ml6g(Ag with tap water)/waste fixer solution of l in, response situation such as following table under 10.5 ℃ room temperature:
Drawing the aluminium activation condition through test is: 1. the concentration of alkali is moderate, should get 25-30%, can adopt 30% industrial lye.2. the temperature of priming reaction is controlled at below 50 ℃.3. soak time was strict controlled within 1 to 5 minute, overlong time, and the aluminium activation excessively causes the loss of aluminium.The top condition that precipitated silver is soaked in alkali lye is: 1. the concentration of alkali is 20-30%, and the room temperature of temperature below 40 degree, soak time are more than 24 hours, and removal of impurities could be fully, and silver is separated from liquid.
Purpose of the present invention just provides a kind of hospital that is applicable to, the photo studio, and photographic film plant is the recovery technology and the device thereof of the silver-containing liquid waste of unit generation short run separately.This technology does not need ammonium citrate reagent, and obtaining of active aluminum do not need mechanical workout yet, uses alkali instead and replaces salt acid treatment precipitated silver, and it is that horizontal multi-stage returns money receptacle that its device changes upright tower (post) formula.
Reclaim the silver process process: argentiferous stop bath and produce silver-colored mud through the direct contact reacts of thin aluminum strip that the liquid caustic soda activation treatment is crossed, remaining waste liquid is with saturated Na
2S checks and has or not black precipitate not have silver in the no black explanation waste liquid and exist, and can abandon it, black occurs also argentiferous of this liquid is described, pours tank into and continues and reactive aluminum.Gained silver mud soaks with the 20-30% liquid caustic soda again isolated silver after 24 hours, washed, dry thick silver granuel powder product, slightly the silver content of silver granuel is about 95% here, adds an amount of boric acid again or the borax founding becomes silver ingot, its silver content can be greater than 99.99%.
The constructional feature that the recovery snow cover is put is the horizontal money receptacle of returning more than 3 grades, it is simple in structure, easily manufactured, the gravity flow potential difference is little, need not the extract equipment of consumes energy, reaction of high order in the groove, the breaking phenomena of the liquid-solid contact of basically eliminate, reaction efficiency greatly improves, because be horizontal, after cover plate at different levels is taken away, can remove the silver dirt that hardens at different levels in the groove easily.
Reclaim snow cover and put description of drawings:
Fig. 1 horizontal multi-stage reclaims the schematic perspective view of silver box aqueduct.
Fig. 2 reclaims the silver box aqueduct front view.
Fig. 3 reclaims the silver box aqueduct vertical view.
Fig. 4 A-A sectional view.
The cell body 1 that returns money receptacle can be isolated into some tank a by polylith dividing plate 3, and every dividing plate has thrust-augmenting nozzle 4, chopped-off head tank a
1In argyrol inlet pipe 2 is arranged, final stage tank a
nIn abandon liquid outlet pipe 5, silver-colored mud outlet pipe 6 is equipped with in each tank bottom, is placed with activation aluminum strip 7 at the bottom of the inclined tank in 8 the upper tank.Reclaim the removal process that snow cover is put with horizontal multi-stage: with 30% industrial lye activation aluminum strip 7, it is put into after totally with flushing with clean water respectively reclaim silver box aqueduct, silver-containing liquid waste flows into tank a from inlet pipe 2 gradually with certain flow rate
1, argyrol is at a
1Reaction is after thrust-augmenting nozzle 4 enters the 2nd grade of tank, and the liquid flow behind the gradual reaction enters final stage tank a
n, checking that with saturated sodium sulphite stop bath has or not silver to exist, the cake moss that remonstrates with loves and angers and get the vexed Wu of the brown shape spiral of Gou plum string and gather around the agent saddle and bridle a horse and flow out, and abandons it.If there is black precipitate then the inflow velocity of the waste fixer solution in the inlet pipe to be turned down, and can be final stage tank a
nIn liquid back in the tank of front and continue and reactive aluminum, each post precipitation silver mud that reacts in the tank takes out from conduit 6, its liquid can return and continue reaction in the corresponding tank.Through using alkaline purification, add borax again and be smelted into silver ingot.
At room temperature reclaim silver-colored result with this recovery silver process and device from the hospital radiological department silver-containing liquid waste, its rate of recovery can reach 99.9%.
The purity of the silver that this recovery silver process and device are recovered to reduces production cost up to 99.99% without ammonium citrate reagent greatly, and the apparatus structure that reclaims silver is simple, is convenient to make, and is beneficial to popularization.
Claims (5)
1, a kind of aluminum strip (silk) and silver-containing liquid waste direct reaction reclaim the technology of silver, it is characterized in that removing aluminium surface oxidation aluminium lamination with alkali, aluminium and silver-containing liquid waste direct reaction get precipitated silver be placed on soak in the alkali lye silver granuel, in silver granuel, infiltrate the borax melting and get silver ingot.
2, alkali as claimed in claim 1 and aluminum oxide reaction is characterized in that alkali concn is 25-30%, and temperature is lower than 50 ℃, and the reaction times was at 1-5 minute.
3, precipitated silver as claimed in claim 1 is placed on dip in the alkali lye, it is characterized in that concentration of lye is 20-30%, and temperature is below 40 degree, and soak time is more than 24 hours.
4, aluminum strip as claimed in claim 1 (silk) and silver-containing liquid waste direct reaction reclaim the device of silver, it is characterized in that horizontally reclaiming silver-colored cell body 1 more than 3 grades and being divided into some tanks 2 by polylith dividing plate 3, and every division board has thrust-augmenting nozzle 4, chopped-off head tank a
1In argyrol inlet pipe 2 is arranged, final stage tank a
nIn abandon liquid outlet pipe 5, a side of each tank bottom is equipped with precipitated silver outlet pipe 6, activation aluminum strip (silk) 7 is arranged at 8 top at the bottom of the inclined tank.
5, recovery snow cover as claimed in claim 3 is put, and it is characterized in that at the bottom of the inclined case that 8 obliquity is at the 10-60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88103130A CN1038077A (en) | 1988-05-24 | 1988-05-24 | Silver-containing liquid waste reclaims silver process and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88103130A CN1038077A (en) | 1988-05-24 | 1988-05-24 | Silver-containing liquid waste reclaims silver process and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1038077A true CN1038077A (en) | 1989-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88103130A Pending CN1038077A (en) | 1988-05-24 | 1988-05-24 | Silver-containing liquid waste reclaims silver process and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038077A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396408C (en) * | 2005-07-29 | 2008-06-25 | 云南铜业股份有限公司 | Production technology of high purity granular silver |
| CN104496417A (en) * | 2014-12-08 | 2015-04-08 | 吴锐 | High-grade bone porcelain for daily use |
| CN107043243A (en) * | 2017-04-26 | 2017-08-15 | 揭阳恒成陶瓷科技有限公司 | A kind of new type bone china mud and preparation method thereof |
| CN107140948A (en) * | 2017-06-12 | 2017-09-08 | 安徽青花坊瓷业股份有限公司 | A kind of daily bone china of high whiteness and preparation method thereof |
| CN107757225A (en) * | 2017-10-27 | 2018-03-06 | 禹州市正玉钧窑有限公司 | The preparation method of the pottery handicraft of horse stepping on a swallow moulding |
-
1988
- 1988-05-24 CN CN88103130A patent/CN1038077A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396408C (en) * | 2005-07-29 | 2008-06-25 | 云南铜业股份有限公司 | Production technology of high purity granular silver |
| CN104496417A (en) * | 2014-12-08 | 2015-04-08 | 吴锐 | High-grade bone porcelain for daily use |
| CN104496417B (en) * | 2014-12-08 | 2017-01-18 | 南通大红鹰涂料有限公司 | High-grade bone porcelain for daily use |
| CN107043243A (en) * | 2017-04-26 | 2017-08-15 | 揭阳恒成陶瓷科技有限公司 | A kind of new type bone china mud and preparation method thereof |
| CN107043243B (en) * | 2017-04-26 | 2020-08-14 | 揭阳恒成陶瓷科技有限公司 | Novel bone ash porcelain clay and preparation method thereof |
| CN107140948A (en) * | 2017-06-12 | 2017-09-08 | 安徽青花坊瓷业股份有限公司 | A kind of daily bone china of high whiteness and preparation method thereof |
| CN107757225A (en) * | 2017-10-27 | 2018-03-06 | 禹州市正玉钧窑有限公司 | The preparation method of the pottery handicraft of horse stepping on a swallow moulding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| CI01 | Correction of invention patent gazette |
Correction item: Abstracts Correct: ... Silver granule... False: ... Tin granule... Number: 51 Page: 25 Volume: 5 Correction item: Inventor Correct: Qiu Jinfa False: Qiu Jinde Number: 51 Page: 25 Volume: 5 |
|
| ERR | Gazette correction |
Free format text: CORRECT: INVENTOR; FROM: QIU JINDE TO: QIU JINFA; WEN ZHAI; FROM: TIN TABLETS TO: YIN LI |
|
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |