IT1123931B - Stabilising ferrous residues - by mixing with cpd. contg. active calcium oxide - Google Patents
Stabilising ferrous residues - by mixing with cpd. contg. active calcium oxideInfo
- Publication number
- IT1123931B IT1123931B IT2959876A IT2959876A IT1123931B IT 1123931 B IT1123931 B IT 1123931B IT 2959876 A IT2959876 A IT 2959876A IT 2959876 A IT2959876 A IT 2959876A IT 1123931 B IT1123931 B IT 1123931B
- Authority
- IT
- Italy
- Prior art keywords
- residues
- contg
- stabilising
- solids
- sulphates
- Prior art date
Links
- 230000003019 stabilising effect Effects 0.000 title abstract 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical group [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 title 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 title 1
- 239000000292 calcium oxide Substances 0.000 title 1
- 239000007787 solid Substances 0.000 abstract 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 2
- 150000004679 hydroxides Chemical class 0.000 abstract 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 abstract 2
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical group [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Biological Depolymerization Polymers (AREA)
- Threshing Machine Elements (AREA)
- Detergent Compositions (AREA)
- Compounds Of Iron (AREA)
Abstract
A process for stabilising and consolidating residues consisting primarily of metal cpds., esp. residues contg. jarosites, goethites, Fe oxides, hydroxides, and sulphates, is described. These residues, with a solids content >=55 wt.%, initially incoherent, are mixed with the stabiliser to form a mechanically stable solid prod. which is inert to the dissolving action of H2O. This allows the prod. to be stored in a heap exposed to the weather without risk of pollution. The heap of solids is only superficially penetrated by rain. The outer layer maintains its strength and the water evaporates quickly after the rain has stopped due to the large surface area of the particles. CO2 in the atmos. has a stabilising effect on the outer layer of solids since it converts active CaO to carbonate. The stable mass will not slide, flow or creep. The process can be used for ferriferous residues produced by pptn. of Fe from solns. of Fe sulphate and Zn sulphate in hydrometallurgical treatment as well as FeSO4 residues and other residues contg. Fe sulphates, oxides or hydroxides.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE162044A BE835777A (en) | 1975-11-20 | 1975-11-20 | PROCESS FOR TREATING WASTE CONTAINING AT LEAST 3% SULFUR IN THE FORM OF BASIC IRON SULPHATES |
| BE172325A BE848299R (en) | 1976-11-12 | 1976-11-12 | PROCESS FOR TREATING WASTE CONTAINING AT LEAST 3% SULFUR IN THE FORM OF BASIC IRON SULPHATES, |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT1123931B true IT1123931B (en) | 1986-04-30 |
Family
ID=25648964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT2959876A IT1123931B (en) | 1975-11-20 | 1976-11-19 | Stabilising ferrous residues - by mixing with cpd. contg. active calcium oxide |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA1079496A (en) |
| ES (1) | ES453462A1 (en) |
| IT (1) | IT1123931B (en) |
| NO (1) | NO763961L (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI123266B (en) | 2010-06-04 | 2013-01-15 | Outotec Oyj | Method and apparatus for homogenizing and stabilizing an ferrous precipitate |
-
1976
- 1976-11-19 ES ES453462A patent/ES453462A1/en not_active Expired
- 1976-11-19 IT IT2959876A patent/IT1123931B/en active
- 1976-11-19 NO NO76763961A patent/NO763961L/no unknown
- 1976-11-19 CA CA266,132A patent/CA1079496A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NO763961L (en) | 1977-05-23 |
| CA1079496A (en) | 1980-06-17 |
| ES453462A1 (en) | 1978-03-01 |
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