CS200857B1 - Process for treatment of waste compounds of mercury containing precipitates before roasting into mercury - Google Patents
Process for treatment of waste compounds of mercury containing precipitates before roasting into mercury Download PDFInfo
- Publication number
- CS200857B1 CS200857B1 CS630278A CS630278A CS200857B1 CS 200857 B1 CS200857 B1 CS 200857B1 CS 630278 A CS630278 A CS 630278A CS 630278 A CS630278 A CS 630278A CS 200857 B1 CS200857 B1 CS 200857B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- mercury
- waste
- lime
- treatment
- weight
- Prior art date
Links
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims description 16
- 229910052753 mercury Inorganic materials 0.000 title claims description 16
- 239000002699 waste material Substances 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 7
- 239000002244 precipitate Substances 0.000 title description 6
- 150000001875 compounds Chemical class 0.000 title description 2
- 239000004571 lime Substances 0.000 claims description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 8
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 8
- 150000002731 mercury compounds Chemical class 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000010812 mixed waste Substances 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 239000012065 filter cake Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 238000005453 pelletization Methods 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 claims 1
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 230000005070 ripening Effects 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229940008718 metallic mercury Drugs 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
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 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
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-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
- 230000002776 aggregation Effects 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229940075397 calomel Drugs 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000474 mercury oxide Inorganic materials 0.000 description 1
- UKWHYYKOEPRTIC-UHFFFAOYSA-N mercury(ii) oxide Chemical class [Hg]=O UKWHYYKOEPRTIC-UHFFFAOYSA-N 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Description
Vynález sa týká úpravy zmesných odpadných ortuťových zlúčenin obsahujúcich precipitáty před pražením na ortuť, po ktorej odpady sú vhodné pre odpražovanie ortute.The invention relates to the treatment of mixed waste mercury compounds containing precipitates before roasting to mercury, after which the waste is suitable for de-mercury removal.
Pri výrobě ortuťových zlúčenin v chemickom priemyele vznikajú rózne odpady vo formě práškov, šupiniek i pevných kueov, ktoró ea obyčajne uskladňujú spolu, obsahujú sublimát, kalomel, rózne druhy precipitátov, oxizlúčeniny ortute a pod. Obsah ortute v zmesnom odpade ea pohybuje od 40 do 70 % hmotnoetných. Protože odpad je toxický, je výhodné ho likvidovat epracovanim na metalickú ortuť. Priame tepelná spracovanie za účelom rozkladu ortuťových zlúčenin v odpade nevedie k výsledkom. Vlhčenie odpadu a preraiešanie s vápnom problém nerleši, pretože čaeť ortute ee odpražuje chloridačne pre přítomnost chloridu amonného, ktorý tu vzniká z hydrolýzy precipitátov. Výťažnosť na ortuť je neuspokojivá a proces kondenzácie ortuťových pár je hygienicky náročný pre přítomnost sublimátu.In the manufacture of mercury compounds in the chemical industry, various wastes are produced in the form of powders, flakes and solid kue, which are usually stored together, containing sublimate, calomel, different types of precipitates, mercury oxides and the like. The mercury content of the mixed waste ea ranges from 40 to 70% by weight. Since the waste is toxic, it is advantageous to dispose of it by treating it with metallic mercury. Direct heat treatment to decompose mercury compounds in the waste does not lead to results. The wetting of the waste and the lime solution do not solve the problem, since the mercury ee is de-chlorinated due to the presence of ammonium chloride, which arises here from the hydrolysis of the precipitates. The mercury yield is unsatisfactory and the mercury vapor condensation process is hygienically demanding due to the presence of sublimate.
Je možná účinné a hygienicky odpražovať ortuť zo zmesných odpadných ortuťových zlúčenin obsahujčcich precipitáty, ak ea před odpraženim upravujú spósobom podlá vynálezu, kterého podstata je vytesňovanie amoniaku najprv z vodnej euepenzie zoralatých odpadov účinkom alkalil a alkalických sirnikov agltáclou 2 až 4 hodiny pri teplote 50 ež 100 °C a pri pH 12 až 14 a potom v 3alšora stupni po odfiltrováni suspenzie zmeeovanim 8 práškovým vápnom v množetve 100 až 200 % na hmotnost sušiny odflltrovanej suspenzie, pričom doba rsagovanla β vápnom Js minimálně 24 hodin. Zmes po ssmovolnom vypudení zbytkového amonia200 857It is possible to efficiently and hygienically de-mercury from mixed waste mercury compounds containing precipitates if they are treated prior to de-agglomeration according to the method of the invention, which essentially consists in displacing ammonia from aqueous euepenzation of the corroded wastes by alkali and alkali sulfides by 2 to 4 hours at 50 to 100 At a pH of 12 to 14 and then in the 3 ' step after filtering the suspension by mixing 8 with lime in an amount of 100 to 200% by weight of the dry matter of the filtered suspension, with a β-lime time of at least 24 hours. Mixture after arbitrary expulsion of residual ammonium
200 057 ku aa paletuje a euši. Pra epevnenie peliet pri peletlzádl je výhodné prldévať Inertně suché prachy, napr. úlety z praženia železných rúd v množstva 10 až 30 % hmotnoetných na auéinu euepenzie.200 057 to and and pallet and eus. For the attachment of the pellets to the pellets, it is advantageous to add inert dry powders, e.g. debris from roasting iron ores in an amount of 10 to 30% by weight per auéu euepenzie.
Spčeob úpravy zmeaných odpadných ortuťových zlúčenln obsahujúoleh precipltáty podlá vynálezu umožňuje zlekavať ortuť odpraženlm z měnlivých a nadefinovaných materlálov pri za chovaní hygieny pri úprava a likvidovat jedovaté ortuťové zlúčeniny pri néelednom tepelnom apracovanl.The treatment method of the mixed mercury waste compounds contains reliable precipates according to the invention, allowing mercury to be stripped off from varying and defined materials while maintaining hygiene treatment and disposing of poisonous mercury compounds in non-heat treatment.
Mlatie odpadov za mokra je výhodné prevádzať v gulovom mlýna z antlkorozlvneho materiálu. Oprava pH vodnaj auapenzie ea prevádza tak, ža aa najprv přidává aíkalia v roztoku, napr. roztok hydroxidu sodného, draselného, vápenného aliaka a pod. a po zhoaoganizovanl a ohriatl obaahu na 50 až 100 °C roztok alkalického airnika, napr. alrnika sodného v množe tve maximálně 3 % na hmotnoať vaádzky pčvodných odpadov.It is advantageous to carry out wet milling of the waste in a ball mill made of an anti-corrosion material. The pH adjustment of the aqueous auapension ea is effected by first and foremost adding the alkali in the solution, e.g. sodium hydroxide solution, potassium hydroxide solution, calcium hydroxide solution etc. and after reconstitution and heating the circulation to 50 to 100 ° C, an alkaline air solution, e.g. of sodium alginate in a quantity of not more than 3% per weight of the original waste input.
Hlavný technický význam vynálezu je v tom, že umožňuje regeneréciu ortute z odpadov tepelným rozkladem na bažných zariadanlach, ktoré sa používajú pre odpražovanle ortute.The main technical meaning of the invention is that it allows the recovery of mercury from waste by thermal decomposition on the conventional devices used for de-mercury deposition.
PřikladExample
Zmesné odpadně ortuťové zlúčeniny v práškovéj i kusovéj forma, v kterých hlavně zložka je sublimót a tavitelný pracipitót, zomielajú ea v porcelánovom gulovom mlýne za mokra. Vyrobené jemné vodná euapanzia aa epúšťa do agltačnej nádržky, kde za stálého mieéanla aa přidává vápenné mliako na doaiahnutia pH 12. Obsah sa vyhrieva na teplotu 80 °C a do auapenzia aa přidává ešte 1 kg airnika sodného vo vodnom roztoku. Uvolňováním amoniaku zo auapenzie trvá okolo 3 hodin. Suspenzia aa filtruje a filtračný koláč aa zmiečava v mlešacom stroji a práškovým vápnoa v množstva 100 kg na 100 kg odpadov. Po 24 hodinovoa stáni vápennáj zmeai ea prevádza peletizácia v peletizačnej mlae za prldanla euohých praohov z pražanla železnáj rudy v dávkováni 10 kg praohov na 100 kg sušiny filtračnáho koláče. Vyrobená pelety aa poneohajú volné doeušiť e odpražujú na ortuť v etážováj peci bažným postup om. Zo epracovania 100 kg odpadov e obsahem ortute 55 % hmotnoetných aa vytěsni 49,5 kg metalickej ortute čistoty 99,993 %. Výťažnoeť na ortuť činí 90 %.Mixed waste mercury compounds in powder and lump form, in which the main component is a sublimate and a fusible working precipitate, are wet-ground in a porcelain ball mill. The produced fine aqueous euapanasia aa passes into an agglomeration tank, where aa lime milk is added under constant aa to reach pH 12. The contents are heated to 80 ° C and 1 kg of sodium air in water solution is added to the auapension aa. It takes about 3 hours to release ammonia from the auapension. The suspension aa is filtered and the filter cake aa is mixed in a mixer and lime powder in an amount of 100 kg per 100 kg of waste. After standing for 24 hours, the lime mixture is mixed and pelletized in a pelletizing mill with addition of the iron soda pellets at a rate of 10 kg of slags per 100 kg of filter cake dry matter. The pellets produced aa are free to dry and are mercury-free in a deck furnace by a conventional procedure. From the refining of 100 kg of waste with a mercury content of 55% by weight and displacing 49.5 kg of metallic mercury of 99.993% purity. The mercury yield is 90%.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS630278A CS200857B1 (en) | 1978-09-29 | 1978-09-29 | Process for treatment of waste compounds of mercury containing precipitates before roasting into mercury |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS630278A CS200857B1 (en) | 1978-09-29 | 1978-09-29 | Process for treatment of waste compounds of mercury containing precipitates before roasting into mercury |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS200857B1 true CS200857B1 (en) | 1980-10-31 |
Family
ID=5409745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS630278A CS200857B1 (en) | 1978-09-29 | 1978-09-29 | Process for treatment of waste compounds of mercury containing precipitates before roasting into mercury |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS200857B1 (en) |
-
1978
- 1978-09-29 CS CS630278A patent/CS200857B1/en unknown
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