CN101514393B - Dearsenization method for sulfurous iron ore slag - Google Patents
Dearsenization method for sulfurous iron ore slag Download PDFInfo
- Publication number
- CN101514393B CN101514393B CN2008102334317A CN200810233431A CN101514393B CN 101514393 B CN101514393 B CN 101514393B CN 2008102334317 A CN2008102334317 A CN 2008102334317A CN 200810233431 A CN200810233431 A CN 200810233431A CN 101514393 B CN101514393 B CN 101514393B
- Authority
- CN
- China
- Prior art keywords
- pyrite cinder
- arsenic
- aqueous solution
- iron ore
- deviate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 16
- 239000002893 slag Substances 0.000 title claims abstract description 7
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 27
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 238000005406 washing Methods 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 239000003818 cinder Substances 0.000 claims description 49
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 49
- 229910052683 pyrite Inorganic materials 0.000 claims description 49
- 239000011028 pyrite Substances 0.000 claims description 49
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 16
- 238000007670 refining Methods 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000000967 suction filtration Methods 0.000 claims description 7
- 230000002378 acidificating effect Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000001117 sulphuric acid Substances 0.000 claims description 2
- 235000011149 sulphuric acid Nutrition 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 238000010792 warming Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011343 solid material Substances 0.000 description 3
- DJHGAFSJWGLOIV-UHFFFAOYSA-N Arsenic acid Chemical compound O[As](O)(O)=O DJHGAFSJWGLOIV-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229940000488 arsenic acid Drugs 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 229960002594 arsenic trioxide Drugs 0.000 description 1
- GOLCXWYRSKYTSP-UHFFFAOYSA-N arsenic trioxide Inorganic materials O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- KTTMEOWBIWLMSE-UHFFFAOYSA-N diarsenic trioxide Chemical compound O1[As](O2)O[As]3O[As]1O[As]2O3 KTTMEOWBIWLMSE-UHFFFAOYSA-N 0.000 description 1
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a dearsenization process for sulfurous iron ore slag, which comprises the following steps: stirring the sulfurous iron ore slag in a sulfuric acid water solution for 0.5 to 2.5 hours at a temperature of between 20 and 50 DEG C; and obtaining refined sulfurous iron ore slag with arsenic content less than 0.07 percent after separation and washing, wherein the dearsenization rate is between 96 and 98 percent. The process has the characteristics of simple processing process, short processing time, easy operation, high arsenic removal rate and the like. Because production equipment used by the process has low cost and excellent performance, the process has strong market competitiveness and promotion and application values.
Description
Technical field
The invention belongs to the field that solid waste in the chemical industry is handled, be specially the method for deviating from that relates to arsenic in the pyrite cinder.
Background technology
The solid waste of output when pyrite cinder is sulfurous iron ore calcining production sulfuric acid, 1,500 ten thousand tons of annual about outputs, account for 1/3 of whole chemical sludge, the principal element composition is an iron, usually can reach the ingredient requirement of ironmaking and be used as iron-smelting raw material through suitably handle as magnetic separation etc., but owing to contain arsenic, copper, zinc, lead etc. simultaneously to smelting iron disadvantageous impurity element in the pyrite cinder, thereby its application is restricted.Pyrite cinder is carried out dearsenification to be handled, by reducing the arsenic content that burns in the slag, make its raw materials quality requirement that reaches ironmaking, not only can remedy the deficiency of China's iron resources, simultaneously can eliminate the pollution of pyrite cinder, have tangible economic benefit and social benefit ecotope.
The removal methods of arsenic mainly contains thermal process and wet processing two classes in the solid materials:
The thermal process dearsenification is meant in High Temperature Furnaces Heating Apparatus and makes the form of arsenic generation white arsenic volatilize by redox reaction, or go out dearsenification by sodium carbonate roasting, water logging, or go out dearsenification by adding salt of weak acid roasting, the water logging that acidity is weaker than arsenic acid, this method have the method tube just, advantages such as equipment is simple, cost is low, non-environmental-pollution, the dearsenification that is applicable to high arsenic solid materials is handled, but this class methods energy consumption is higher, and the dearsenification degree of depth is limited.
The wet processing dearsenification is meant adopts the aqueous solution contain the dearsenification treatment agent to handle under with interior condition 100 ℃ of temperature, makes arsenic enter solution with the form of arsenic acid or arsenus acid, thereby separates with solid materials.The dearsenification treatment agent that uses comprises ferriferous oxide, hydrogen peroxide, Peracetic Acid, contains Mn oxide, contains oxychloride or their mixture, sodium hydroxide etc., these class methods have that operating process is simple, reaction temperature and, arsenic decreasing ratio height, characteristic of low energy consumption.
Summary of the invention
The object of the present invention is to provide a kind of technical process simple, the treatment time is short, processing ease, safety, the novel method of deviating from pyrite cinder arsenic that arsenic-removing rate is high.
The feature of deviating from method of arsenic is in a kind of pyrite cinder of the present invention: pyrite cinder is inserted in the acidic aqueous solution, and heating, stirring reaction is dried the refining pyrite cinder that obtains low arsenic content through separation, washing, suction filtration then.
Described pyrite cinder is meant the solid slag of output when sulfuric acid is produced in industrial employing sulfurous iron ore calcining.
Described pyrite cinder is meant and contains arsenic greater than 1.5%, and iron content is obtaining pyrite cinder more than 55% after ore dressing.
Described acidic solution is a sulphuric acid soln.
Described Heating temperature is 20～80 ℃, and vitriolic concentration is 5～30% in the acidic aqueous solution.
0.5～2.5 hour described stirring reaction time, stirring velocity is 200～500 rev/mins.
Described pyrite cinder: the weight percent of the aqueous solution is 1:2.5～10.
Described washing is washed for adopting general tap water.
The present invention is achieved in that pyrite cinder put into and is warming up to 20～80 ℃, the aqueous solution of sulfur acid 5～30%, the ratio of the pyrite cinder and the aqueous solution is 1:2.5～1:10, constant temperature stirring reaction 0.5～2.5 hour, stirring velocity is 200～500 rev/mins, after reaction finishes, be cooled to room temperature, treat pyrite cinder solution static layering after, carry out solid-liquid separation.Pyrite cinder after the separation adds tap water washing again, cleans till the neutrality, and the suction filtration oven dry promptly obtains the purified pyrite cinder then.The present invention is a kind of dearsenicating technology of pyrite cinder, this technology be with pyrite cinder with aqueous acid under heating, stir process, then through separate, washing obtains arsenic content less than 0.07% refining pyrite cinder, arsenic-removing rate is 96～98%.
Embodiment
Embodiment 1: aqueous sulfuric acid 500 grams that add sulfur acid 15% in beaker, after being warming up to 50 ℃, add pyrite cinder 150 grams, constant temperature stirring reaction 1.5 hours, stirring velocity is 250 rev/mins, be cooled to room temperature, static layering, filtration, washing, suction filtration oven dry promptly obtain refining pyrite cinder, and this sample is by analysis, arsenic content is 0.072% in the pyrite cinder, and refining pyrite cinder iron level is 60.23%.
Embodiment 2: aqueous sulfuric acid 500 grams that add sulfur acid 15% in beaker, after being warming up to 80 ℃, add pyrite cinder 150 grams, constant temperature stirring reaction 2.5 hours, stirring velocity is 250 rev/mins, be cooled to room temperature, static layering, filtration, washing, suction filtration oven dry promptly obtain refining pyrite cinder, and this sample is by analysis, arsenic content is 0.070% in the pyrite cinder, and refining pyrite cinder iron level is 60.75%.
Embodiment 3: aqueous sulfuric acid 500 grams that add sulfur acid 15% in beaker, after being warming up to 20 ℃, add pyrite cinder 150 grams, constant temperature stirring reaction 2.5 hours, stirring velocity is 400 rev/mins, be cooled to room temperature, static layering, filtration, washing, suction filtration oven dry promptly obtain refining pyrite cinder, and this sample is by analysis, arsenic content is 0.049% in the pyrite cinder, and refining pyrite cinder iron level is 62.23%.
Embodiment 4: aqueous sulfuric acid 500 grams that add sulfur acid 15% in beaker, after being warming up to 30 ℃, add pyrite cinder 150 grams, constant temperature stirring reaction 2.5 hours, stirring velocity is 500 rev/mins, be cooled to room temperature, static layering, filtration, washing, suction filtration oven dry promptly obtain refining pyrite cinder, and this sample is by analysis, arsenic content is 0.045% in the pyrite cinder, and refining pyrite cinder iron level is 61.86%.
Claims (5)
- In the pyrite cinder arsenic deviate from method, it is characterized in that pyrite cinder is inserted in the acidic aqueous solution, heating, stirring reaction obtains the refining pyrite cinder of low arsenic content then through separation, washing, suction filtration oven dry;Described acidic aqueous solution is a sulphuric acid soln, and vitriolic concentration is 5～30% in the acidic aqueous solution;Described pyrite cinder is meant the solid slag of output when sulfuric acid is produced in industrial employing sulfurous iron ore calcining;Described pyrite cinder: the acidic aqueous solution weight ratio is 1: 2.5～10.
- 2. in the pyrite cinder according to claim 1 arsenic deviate from method, it is characterized in that described Heating temperature is 20～80 ℃.
- 3. in the pyrite cinder according to claim 1 arsenic deviate from method, it is characterized in that described pyrite cinder is meant and contain arsenic that iron content is obtaining pyrite cinder more than 55% after ore dressing greater than 1.5%.
- 4. in the pyrite cinder according to claim 1 arsenic deviate from method, it is characterized in that 0.5～2.5 hour described stirring reaction time, stirring velocity is 200～500 rev/mins.
- 5. the method for deviating from of arsenic is characterized in that described washing is to adopt general tap water to wash in the pyrite cinder according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102334317A CN101514393B (en) | 2008-10-13 | 2008-10-13 | Dearsenization method for sulfurous iron ore slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102334317A CN101514393B (en) | 2008-10-13 | 2008-10-13 | Dearsenization method for sulfurous iron ore slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101514393A CN101514393A (en) | 2009-08-26 |
| CN101514393B true CN101514393B (en) | 2011-07-06 |
Family
ID=41039015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102334317A Expired - Fee Related CN101514393B (en) | 2008-10-13 | 2008-10-13 | Dearsenization method for sulfurous iron ore slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101514393B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534197B (en) * | 2012-02-09 | 2014-04-30 | 昆明川金诺化工股份有限公司 | Method utilizing sulfuric acid roasting slag to prepare fine iron powder |
| CN103088203B (en) * | 2013-03-01 | 2015-08-12 | 罗涛 | The method of Iron concentrate is produced with sulfate slag |
| CN103572041A (en) * | 2013-10-25 | 2014-02-12 | 湖南省环境保护科学研究院 | Wet deep dearsenification method for high-arsenic iron ores |
| CN105541064B (en) * | 2016-01-21 | 2019-02-19 | 昆明理工大学 | A kind of heavy metal sewage sludge combines method of disposal with waste acid |
| CN115849456A (en) * | 2022-12-14 | 2023-03-28 | 湖北虹润高科新材料有限公司 | Method for preparing iron oxide by using pyrite cinder and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676637A (en) * | 2004-03-31 | 2005-10-05 | 郁南县广鑫冶炼有限公司 | Pollution-free arsenic alkali slage treating technique |
-
2008
- 2008-10-13 CN CN2008102334317A patent/CN101514393B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676637A (en) * | 2004-03-31 | 2005-10-05 | 郁南县广鑫冶炼有限公司 | Pollution-free arsenic alkali slage treating technique |
Non-Patent Citations (2)
| Title |
|---|
| 李亚军等.化学法脱硫铁矿烧渣砷的研究.化工科技 4.2008,(4),33～35. |
| 李亚军等.化学法脱硫铁矿烧渣砷的研究.化工科技 4.2008,(4),33～35. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101514393A (en) | 2009-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2743355C1 (en) | Method of extracting vanadium from vanadium slag with high content of calcium and phosphorus | |
| CN103966424B (en) | A kind of method of blank vanadium slag sintering vanadium extraction | |
| CN101514393B (en) | Dearsenization method for sulfurous iron ore slag | |
| CN109355514B (en) | Method for extracting vanadium from vanadium slag by low-calcium roasting-countercurrent acid leaching | |
| CN102828025A (en) | Method for extracting V2O5 from stone coal navajoite | |
| CN103194611A (en) | Method for producing vanadium oxide | |
| CN106756056B (en) | A kind of method of Copper making white cigarette dirt dearsenification | |
| CN104357652A (en) | Method for directly extracting vanadium from high-calcium vanadium slag by roasting-alkali leaching | |
| CN103952572B (en) | Method for optimizing zinc hydrometallurgy hot acid leaching process by pressure leaching | |
| CN103484673A (en) | Method for vadaium precipitation from balck acid leaching vanadium liquid | |
| CN104150576A (en) | Method for preparing polyaluminum ferric chloride from coal ashes | |
| CN107523694A (en) | A kind of method of Bellamya aeruginosa roasting Strengthen education | |
| CN103898329A (en) | Method for extracting vanadium from vanadium slag through manganese roasting | |
| CN107058750B (en) | Germanic Bellamya aeruginosa comprehensive recycling process | |
| CN103074496A (en) | Method for separating and purifying magnesium dioxide from anode mud | |
| CN103952563A (en) | Method for removing arsenic from white smoke | |
| JP6015824B2 (en) | Processing method of copper smelting ash | |
| CN106882839B (en) | Method for comprehensively utilizing titanium white waste acid | |
| JP5821775B2 (en) | Processing method of copper smelting ash | |
| CN102173491B (en) | Process for comprehensively utilizing rare-earth ore leaching waste liquid and calcining waste heat in rare earth production | |
| CN104294033A (en) | Vanadium extracting process for silicate type vanadium ore | |
| CN104878198B (en) | A kind of compound method containing lead electrolytic solution | |
| CN104775040B (en) | Comprehensive recycling process for acid leaching residues | |
| CN107697896A (en) | A kind of method that high-purity phosphoric acid iron is prepared using ferric manganese ore as raw material | |
| CN103572041A (en) | Wet deep dearsenification method for high-arsenic iron ores |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20131013 |