NO142717B - PROCEDURE FOR EXPLOITING SELEN AND MERCURY OIL FROM METALLURGICAL PROCESS PRODUCTS - Google Patents
PROCEDURE FOR EXPLOITING SELEN AND MERCURY OIL FROM METALLURGICAL PROCESS PRODUCTS Download PDFInfo
- Publication number
- NO142717B NO142717B NO763084A NO763084A NO142717B NO 142717 B NO142717 B NO 142717B NO 763084 A NO763084 A NO 763084A NO 763084 A NO763084 A NO 763084A NO 142717 B NO142717 B NO 142717B
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- Prior art keywords
- mercury
- selenium
- solution
- precipitated
- metallurgical process
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 16
- 238000010310 metallurgical process Methods 0.000 title claims description 5
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 30
- 229910052711 selenium Inorganic materials 0.000 claims description 27
- 239000011669 selenium Substances 0.000 claims description 27
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 24
- 229910052753 mercury Inorganic materials 0.000 claims description 22
- UKWHYYKOEPRTIC-UHFFFAOYSA-N mercury(ii) oxide Chemical compound [Hg]=O UKWHYYKOEPRTIC-UHFFFAOYSA-N 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 7
- 239000007858 starting material Substances 0.000 claims description 7
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 6
- 239000000543 intermediate Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000006227 byproduct Substances 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 239000000908 ammonium hydroxide Substances 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 4
- 230000003113 alkalizing effect Effects 0.000 claims description 3
- 229940101209 mercuric oxide Drugs 0.000 claims description 3
- 239000007900 aqueous suspension Substances 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- YQMLDSWXEQOSPP-UHFFFAOYSA-N selanylidenemercury Chemical compound [Hg]=[Se] YQMLDSWXEQOSPP-UHFFFAOYSA-N 0.000 description 5
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- QYHFIVBSNOWOCQ-UHFFFAOYSA-N selenic acid Chemical compound O[Se](O)(=O)=O QYHFIVBSNOWOCQ-UHFFFAOYSA-N 0.000 description 3
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- WHWBFIQUUKTYAN-UHFFFAOYSA-N [O].[Se] Chemical compound [O].[Se] WHWBFIQUUKTYAN-UHFFFAOYSA-N 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- -1 diamine mercury(II) chloride Chemical class 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229960002523 mercuric chloride Drugs 0.000 description 1
- LWJROJCJINYWOX-UHFFFAOYSA-L mercury dichloride Chemical compound Cl[Hg]Cl LWJROJCJINYWOX-UHFFFAOYSA-L 0.000 description 1
- 229910000474 mercury oxide Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 229940034483 potassium chloride / sodium chloride Drugs 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 150000003342 selenium Chemical class 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B19/00—Selenium; Tellurium; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B19/00—Selenium; Tellurium; Compounds thereof
- C01B19/02—Elemental selenium or tellurium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G13/00—Compounds of mercury
- C01G13/02—Oxides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B43/00—Obtaining mercury
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Description
Oppfinnelsen vedrører en fremgangsmåte til fremstilling av selen og kvikksølv fra metallurgiske mellom-, bi- og avfallsprodukter, spesielt fra et slam som fremkommer ved rensning av røstgasser fra sinkkonsentrat-røsting. The invention relates to a method for the production of selenium and mercury from metallurgical intermediate, by-product and waste products, in particular from a sludge resulting from the purification of roasting gases from zinc concentrate roasting.
Hens den overveiende del av kvikksølv stammer His the predominant part of mercury originates
fra naturlige kvikksølvholdige malmer finnes selen, bort-sett fra noen sjeldne mineraler i naturlige malmer bare i meget små konsentrasjoner. Ved fremstilling av selen kommer det derfor i det vesentlige til anvendelse metallurgiske mellom-, bi- og avfallsprodukter, hvori selenet allerede foreligger anriket i høyere konsentrasjoner. Hovedsakelig opptrer i disse utgangsmaterialer selen og kvikksølv, som kvikksølvselenid, delvis foreligger de imidlertid også elementært. from natural mercury-containing ores, selenium is found, apart from some rare minerals in natural ores only in very small concentrations. In the production of selenium, metallurgical intermediate, by-products and waste products are therefore essentially used, in which the selenium is already enriched in higher concentrations. Selenium and mercury mainly appear in these starting materials, as mercury selenide, but in some cases they are also present elementally.
Det er allerede kjent fremgangsmåter til fremstilling av selen fra metallurgiske prosessmellomprodukter fra tysk patent nr. 656.100 og 1.201.069, DOS 2.053.334 og 2.406.119, japansk patent nr. 2455/56, USSR-patent nr. 174.794, US-patent nr. 3.288.561, samt fra artikkelen av S. Loschau, Erzmetall 12, 1959, 21. Disse fremgangsmåter består i det vesentlige av Methods for producing selenium from metallurgical process intermediates are already known from German Patent No. 656,100 and 1,201,069, DOS 2,053,334 and 2,406,119, Japanese Patent No. 2455/56, USSR Patent No. 174,794, US Patent No. 3,288,561, as well as from the article by S. Loschau, Erzmetall 12, 1959, 21. These methods essentially consist of
a) en sulfatiserende røsting a) a sulphating roasting
b) en røsting med soda eller jordalkalioksyder eller -karbonater b) a roasting with soda or alkaline earth oxides or carbonates
c) en alkalisk eller sur trykkoppslutning c) an alkaline or acid pressure digestion
d) én smelting med alkalihydroksyder eller tilsetning av reduksjonsmidler eller e) en klorering med klorgass ved 300 til 500°C eller i en kaliumklorid/natriumklorid-smelte. d) one melting with alkali hydroxides or addition of reducing agents or e) one chlorination with chlorine gas at 300 to 500°C or in a potassium chloride/sodium chloride melt.
De kjente fremgangsmåter har imidlertid visse ulemper. Således fremkommer ved fremgangsmåten ifølge punkt However, the known methods have certain disadvantages. Thus, the method according to point
c) og d) et sterkt med kvikksølv forurenset selen. Med fremgangsmåten ifølge punkt a) og e) flyktiggjøres en del c) and d) a strong mercury-contaminated selenium. With the procedure according to points a) and e), a portion is volatilized
av kvikksølvet og ved fremgangsmåten ifølge punkt b) reduseres ved tilsetning av reaksjonsmidler, som ved flyktig-gjøring av kvikksølvet binder selenet, det i utgangsmaterialene relativt høye seleninnhold til et lite innhold, så- of the mercury and in the method according to point b) is reduced by the addition of reactants, which, by volatilizing the mercury, bind the selenium, the relatively high selenium content in the starting materials to a low content, so
ledes at selenfremsti11ingen er uøkonomisk. led to the fact that selenium production is uneconomical.
Til grunn for oppfinnelsen ligger derfor den oppgave å tilveiebringe en økonomisk fremgangsmåte til fremstilling av selen og kvikksølv ved adskilling av begge elementer fra metallurgiske prosessmellom-, bi- og avfallsprodukter, hvor det under samtidige fremstillinger av kvikksølv fremkommer et omtrent kvikksølvfritt selen. The invention is therefore based on the task of providing an economical method for the production of selenium and mercury by separating both elements from metallurgical process intermediates, by-products and waste products, where an approximately mercury-free selenium is produced during the simultaneous production of mercury.
Oppfinnelsen vedrører altså en fremgangsmåte The invention therefore relates to a method
til utvinning av selen og kvikksølv fra metallurgiske prosessmellom-, bi- og avfallsprodukter, som inneholder selen og kvikksølv hovedsakelig som kvikksølvselenid og elementært, idet fremgangsmåten er karakterisert ved at utgangsmaterialet suspenderes i vann eller i fortynnet saltsyre , at klor- for the extraction of selenium and mercury from metallurgical process intermediates, by-products and waste products, which contain selenium and mercury mainly as mercury selenide and elemental, the method being characterized in that the starting material is suspended in water or in dilute hydrochloric acid, that chlorine
gass innføres i den vandige suspensjon inntil det til selen og svovel bundne kvikksølv og det til kvikksølv bundne og det elementære selen er gått i oppløsning, at kvikksølv utfelles ved alkalisering av oppløsningen som kvikksølv-oksyd, at oppløsningen filtreres og surgjøres, hvoretter selen utfelles fra filtratet ved hjelp av et reduksjonsmiddel. gas is introduced into the aqueous suspension until the mercury bound to the selenium and sulfur and the mercury bound to the elemental selenium have dissolved, that the mercury is precipitated by alkalizing the solution as mercuric oxide, that the solution is filtered and acidified, after which the selenium is precipitated from the filtrate using a reducing agent.
Selensyren som oppstår ved innføring av klorgass kan reduseres ved koking av oppløsningen. Videre kan etter alkalisering av oppløsningen for utfelling av resterende kvikksølv tilsettes mindre mengder av en ammoniumhyd-roksydoppløsning. Større mengder av elementært svovel for-styrrer ikke fremgangsmåteforløpet. The selenic acid produced by the introduction of chlorine gas can be reduced by boiling the solution. Furthermore, after alkalizing the solution to precipitate residual mercury, smaller quantities of an ammonium hydroxide solution can be added. Larger amounts of elemental sulfur do not interfere with the course of the process.
Basisreaksjonen for fremgangsmåten ifølge oppfinnelsen til oppslutning av kvikksølvselenid, -sulfid og elementært selen som hovedbestanddel av utgangsmaterialene er oksydasjonen av disse forbindelser ved den av klorgass og vann dannede underklorsyre. The basic reaction for the method according to the invention for digesting mercury selenide, sulphide and elemental selenium as the main component of the starting materials is the oxidation of these compounds by the hypochlorous acid formed from chlorine gas and water.
Den ved oksydasjonen av selen kontinuerlig for-brukte underklorsyrling erstattes kontinuerlig etter like-vektsreaksjon (1) av oppløst klor og vann. The hypochlorous acid continuously consumed by the oxidation of selenium is continuously replaced after equilibrium reaction (1) by dissolved chlorine and water.
Oksydasjonen av selen og kvikksølvselenid for-løper ved tilsvarende temperatur til trinnet for selensyrling som følger: The oxidation of selenium and mercury selenide proceeds at a corresponding temperature to the stage for selenium acidification as follows:
En liten del selensyre dannet i en bireaksjon (4) lar seg igjen redusere til selensyrling ifølge reaksjon (5) ved oppkoking av den samlede reaksjonsoppløsning da det foreligger tilstrekkelig oppløst hydrogenklorid som reduksjonsmiddel . A small portion of selenic acid formed in a side reaction (4) can be reduced again to selenic acid according to reaction (5) by boiling the overall reaction solution as there is sufficient dissolved hydrogen chloride as a reducing agent.
Mindre mengder sulfid i utgangsmaterialet i form av kvikksølvsulfid oksyderes ifølge reaksjon (6) av underklorsyrling til sulfat. Smaller amounts of sulphide in the starting material in the form of mercuric sulphide are oxidized according to reaction (6) of hypochlorous acid to sulphate.
Elementært svovel angripes derimot ved de Elemental sulfur, on the other hand, is attacked by de
valgte reaksjonsbetingelser inntil 50°C ikke av underklorsyrling og forblir likeledes som elementært kvikksølv i residuet. chosen reaction conditions up to 50°C not by hypochlorous acid and also remains as elemental mercury in the residue.
Etter adskillelse av de uoppløste faste stoffer blir det til den vandige hovedsakelige kvikksølvklorid, hydrogenklorid og selensyrling inneholdt oppløsning, til-satt en til hydrogenklorid- og kvikksølvinnholdet ekviva-lent mengde av alkalimetallhydroksyd. Herved utfelles ifølge reaksjon (7) kvantitativt gult kvikksølv (II)-oksyd, som etter adskillelse og vasking med vann bare inneholder spor av kloridioner. After separation of the undissolved solids, an amount of alkali metal hydroxide equivalent to the hydrogen chloride and mercury content is added to the aqueous mainly mercuric chloride, hydrogen chloride and selenium acid containing solution. Hereby, according to reaction (7), yellow mercury (II) oxide is precipitated quantitatively, which after separation and washing with water only contains traces of chloride ions.
Det gule kvikksølvoksyd spaltes ifølge reaksjon (8) ved en temperatur over 4 0 0°C til oksygen og elementært kvikksølv, som kondenseres og adskilles. The yellow mercuric oxide is decomposed according to reaction (8) at a temperature above 400°C into oxygen and elemental mercury, which is condensed and separated.
Til utfelling av resterende kvikksølv fra den selensyrlingholdige oppløsning kan det eventuelt i alkalisk miljø tilsettes noe ammoniumhydroksydoppløsning, idet ifølge reaksjon (9) diaminkvikksølv(II)-klorid utfelles som en hvit utfelling som smeltes. To precipitate residual mercury from the selenium-oxygen-containing solution, some ammonium hydroxide solution can optionally be added in an alkaline environment, since according to reaction (9) diamine mercury(II) chloride is precipitated as a white precipitate which is melted.
Selenet utfelles deretter på vanlig måte i saltsurt miljø med svoveldioksyd, hydrazinhydrat eller "Rongalit" (formaldehydnatriumsulfoksylat). The selenium is then precipitated in the usual way in a saline environment with sulfur dioxide, hydrazine hydrate or "Rongalit" (formaldehyde sodium sulfoxylate).
Det således oppnådde selen har en renhet på over 99% og et kvikksølvinnhold under 20 ppm. The selenium thus obtained has a purity of over 99% and a mercury content of less than 20 ppm.
Ved et forsøk ble 100 g kvikksølvselen-utgangs-materiale suspendert i 500 ml vann under omrøring og 40 g klorgass innført iløpet av 25 minutter under suspensjonen, idet temperaturen øket til 42°C. Det uoppløste residuet ble frafiltrert. Til filtratet ble det satt 250 ml av en 22%-ig natriumhydroksydoppløsning, idet gult kvikksølv-oksyd falt ut, som ble frafiltrert og tørket; det veide 28,2 g. Deretter ble oppløsningen blandet med 1 ml av en 10%-ig ammoniumhydroksydoppløsning. Den hvite utfelling ble frafiltrert og tørket; den veide 18 mg. Filtratet ble surgjort med 30 ml konsentrert saltsyre og blandet ved 50°C med 20 ml 80%-ig hydrazinhydratoppløsning. Det dannede røde selen ble ved oppkoking av oppløsningen over-ført i sort selen, hvis mengde utgjorde 11,7 g råselen. In an experiment, 100 g of mercury-selenium starting material was suspended in 500 ml of water with stirring and 40 g of chlorine gas was introduced during 25 minutes during the suspension, the temperature being increased to 42°C. The undissolved residue was filtered off. 250 ml of a 22% sodium hydroxide solution was added to the filtrate, with yellow mercury oxide falling out, which was filtered off and dried; it weighed 28.2 g. The solution was then mixed with 1 ml of a 10% ammonium hydroxide solution. The white precipitate was filtered off and dried; it weighed 18 mg. The filtrate was acidified with 30 ml of concentrated hydrochloric acid and mixed at 50°C with 20 ml of 80% hydrazine hydrate solution. The red selenium formed was converted into black selenium by boiling the solution, the amount of which amounted to 11.7 g of crude selenium.
Analyse av utgangsmaterialet: Analysis of the source material:
Balanse Balance
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2558115A DE2558115C3 (en) | 1975-12-23 | 1975-12-23 | Process for the simultaneous extraction of selenium and mercury |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO763084L NO763084L (en) | 1977-06-24 |
| NO142717B true NO142717B (en) | 1980-06-23 |
| NO142717C NO142717C (en) | 1980-10-01 |
Family
ID=5965344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO763084A NO142717C (en) | 1975-12-23 | 1976-09-08 | PROCEDURE FOR EXPLOITING SELEN AND MERCURY OIL FROM METALLURGICAL PROCESS PRODUCTS |
Country Status (10)
| Country | Link |
|---|---|
| BE (1) | BE849605A (en) |
| DE (1) | DE2558115C3 (en) |
| ES (1) | ES451331A1 (en) |
| FI (1) | FI763413A (en) |
| FR (1) | FR2336487A1 (en) |
| GB (1) | GB1515610A (en) |
| IT (1) | IT1069596B (en) |
| NL (1) | NL7610015A (en) |
| NO (1) | NO142717C (en) |
| SE (1) | SE412605B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT386611B (en) * | 1985-10-08 | 1988-09-26 | Austria Metall | Hydrometallurgical process for separating out and enriching gold, platinum and palladium and obtaining selenium from the anode slurry from copper electrolysis and similar raw materials |
| CN104561558B (en) * | 2015-01-19 | 2017-08-04 | 北京矿冶研究总院 | Method for treating selenium-containing mercury acid mud |
| CN113716532A (en) * | 2021-09-13 | 2021-11-30 | 昆明理工大学 | Method for removing impurity mercury from crude selenium |
-
1975
- 1975-12-23 DE DE2558115A patent/DE2558115C3/en not_active Expired
-
1976
- 1976-09-08 ES ES451331A patent/ES451331A1/en not_active Expired
- 1976-09-08 NO NO763084A patent/NO142717C/en unknown
- 1976-09-09 NL NL7610015A patent/NL7610015A/en unknown
- 1976-10-04 IT IT5155676A patent/IT1069596B/en active
- 1976-10-11 FR FR7631307A patent/FR2336487A1/en active Granted
- 1976-10-22 GB GB4399476A patent/GB1515610A/en not_active Expired
- 1976-11-26 FI FI763413A patent/FI763413A/fi not_active Application Discontinuation
- 1976-12-13 SE SE7613993A patent/SE412605B/en unknown
- 1976-12-20 BE BE173426A patent/BE849605A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES451331A1 (en) | 1977-11-01 |
| DE2558115A1 (en) | 1977-06-30 |
| FI763413A (en) | 1977-06-24 |
| BE849605A (en) | 1977-04-15 |
| FR2336487B1 (en) | 1980-03-28 |
| FR2336487A1 (en) | 1977-07-22 |
| NO763084L (en) | 1977-06-24 |
| NL7610015A (en) | 1977-06-27 |
| SE7613993L (en) | 1977-06-24 |
| SE412605B (en) | 1980-03-10 |
| DE2558115B2 (en) | 1977-10-20 |
| DE2558115C3 (en) | 1978-06-08 |
| GB1515610A (en) | 1978-06-28 |
| IT1069596B (en) | 1985-03-25 |
| NO142717C (en) | 1980-10-01 |
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