RO98785B1 - Process for recovering plate slab from slurry deposited in installation for producing azotic acid - Google Patents
Process for recovering plate slab from slurry deposited in installation for producing azotic acidInfo
- Publication number
- RO98785B1 RO98785B1 RO13085187A RO13085187A RO98785B1 RO 98785 B1 RO98785 B1 RO 98785B1 RO 13085187 A RO13085187 A RO 13085187A RO 13085187 A RO13085187 A RO 13085187A RO 98785 B1 RO98785 B1 RO 98785B1
- Authority
- RO
- Romania
- Prior art keywords
- platinum
- installation
- producing
- plate slab
- slurry deposited
- Prior art date
Links
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 238000009434 installation Methods 0.000 title 1
- 239000002002 slurry Substances 0.000 title 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000010802 sludge Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 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 abstract 1
- 241000872198 Serjania polyphylla Species 0.000 abstract 1
- 239000012153 distilled water Substances 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229910017604 nitric acid Inorganic materials 0.000 abstract 1
- UPIXZLGONUBZLK-UHFFFAOYSA-N platinum Chemical compound [Pt].[Pt] UPIXZLGONUBZLK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
Classifications
-
- 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
- Manufacture And Refinement Of Metals (AREA)
Abstract
Inventia se refera la un procedeu de recuperare a platinei din namolurile depuse în instalatiile de fabricare a acidului azotic. Namolurile cu un continut redus de Pt cuprins între 0,005-0,04% sunt tratate, sub agitare, cu apa regala în raport S : L=1 : 1...1 : 3 la 80...100 degree C pâna la evaporarea completa reluate la 80...100 degree C pâna la sec. Masa ramasa este dizolvata în apa distilata la 40...60 degree C, fierul se separa prin tratare cu NaOH 10%, iar precipitatul se filtreaza. Complexul platinic din fil trat este redus la negru de platina cu hidrat de hidrazina 25% la 70...100 degree C, care apoi se filtreaza, se spala pentru îndepartarea Cl supra - si se usuca la 105 degree C.The invention relates to a process for recovering platinum from sludge deposited in nitric acid manufacturing plants. The sludge with a low Pt content of between 0.005-0.04% is treated with royal water in a ratio of S: L = 1: 1 to 1: 3 to 80-100 degrees Celsius to evaporation Completely resumed at 80 ... 100 degrees C to sec. The remaining mass is dissolved in distilled water at 40-60 ° C, the iron is separated by treatment with 10% NaOH and the precipitate is filtered off. Platinum platinum complex is reduced to platinum black with 25% hydrazine hydrate at 70-100 ° C, which is then filtered, washed to remove Cl over - and dried at 105 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO13085187A RO98785B1 (en) | 1987-12-09 | 1987-12-09 | Process for recovering plate slab from slurry deposited in installation for producing azotic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO13085187A RO98785B1 (en) | 1987-12-09 | 1987-12-09 | Process for recovering plate slab from slurry deposited in installation for producing azotic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RO98785B1 true RO98785B1 (en) | 1990-04-30 |
Family
ID=40906882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO13085187A RO98785B1 (en) | 1987-12-09 | 1987-12-09 | Process for recovering plate slab from slurry deposited in installation for producing azotic acid |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO98785B1 (en) |
-
1987
- 1987-12-09 RO RO13085187A patent/RO98785B1/en unknown
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