CN108609663A - A kind of pyrite-based sulfuric acid production slag extraction feed grade ferrous sulfate technique - Google Patents
A kind of pyrite-based sulfuric acid production slag extraction feed grade ferrous sulfate technique Download PDFInfo
- Publication number
- CN108609663A CN108609663A CN201810877757.7A CN201810877757A CN108609663A CN 108609663 A CN108609663 A CN 108609663A CN 201810877757 A CN201810877757 A CN 201810877757A CN 108609663 A CN108609663 A CN 108609663A
- Authority
- CN
- China
- Prior art keywords
- ferrous sulfate
- feed grade
- sulfuric acid
- pyrite
- grade ferrous
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/14—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to feed grade ferrous sulfate preparation method fields, and in particular to a kind of pyrite-based sulfuric acid production slag extraction feed grade ferrous sulfate technique includes the following steps：A, it leaches：With a concentration of 98% sulfuric acid to leach pyrite cinder；B, it detaches：The reaction slurry obtained in a is centrifuged, solid returns to sulphuric acid fluidized bed roaster；C, it refines：Reducing agent and Hydrodearsenic Catalyst removal impurity is added in the reaction slurry obtained at a suitable temperature into b；D, secondary separation：Using the reaction slurry obtained in c is centrifuged, solid returns to sulphuric acid fluidized bed roaster；E, cooling：Detach liquid natural cooling；F, it detaches：The slurry obtained in e is centrifuged, solid is feed grade ferrous sulfate；G, separation mother liquor returns to the first step and adjusts leaching liquid concentration.The present invention realizes pyrite cinder and produces feed grade ferrous sulfate, that is, has handled pyrite cinder, and without being arranged outside any pollutant, feed grade ferrous sulfate purity obtained is high, good in economic efficiency.
Description
Technical field
The invention belongs to feed grade ferrous sulfate preparation method fields, and in particular to a kind of pyrite-based sulfuric acid production slag extraction feeding
Expect grade ferrous sulfate technique.
Background technology
Troilite is the primary raw material of China's production sulfuric acid.Currently employed troilite or the sulfuric acid of sulfur-bearing tailings production, about
Account for 80% or more of China's sulfuric acid total output.There are the discharge of millions of tons slag, main component Fe in China every year203.Slag can be made
For iron-smelting raw material, non-ferrous metal and rare precious metal are recycled, makes cement etc..Therefore, it is a kind of of great value raw material.
Anhydrous slufuric acid ferrous iron is white powder, and what it is containing the crystallization water is pale green crystals, and crystal is commonly called as " green vitriol ", is dissolved in water water
Solution is light green color.Ferrous sulfate can be used for chromatography reagent, spot analysis measures platinum, selenium, nitrite and nitrate.Sulphur
Sour ferrous iron can be used for molysite processed, iron oxide pigment, mordant, water purification agent, preservative, disinfectant etc..It can be divided into industry by purposes
Grade and agriculture two kinds of grade, but technical grade sulfuric acid is ferrous can be divided into two kinds of water process ferrous sulfate and feed grade ferrous sulfate again.
Feed grade ferrous sulfate is containing there are one the hydrolysate of the crystallization water, and color is pale powder.Feed grade ferrous sulfate is answered
With：Feed grade ferrous sulfate is that a kind of molysite additive has a vast market as the replenishers of iron in feed processing,
Preferable economic benefit.
Common feed grade ferrous sulfate production method is reacted using sulfuric acid and iron, is walked using purification, freezing, separation
Suddenly, a large amount of purification sludge and waste gypsum are will produce in production process.It is sub- using pyrite-based sulfuric acid production slag extraction feed grade sulfuric acid
Iron can not only reduce the discharge capacity of slag, but also can re-use slag, and new product is made, and fully achieve the cycle of resource
It utilizes.Therefore it is badly in need of a kind of pyrite-based sulfuric acid production slag extraction feed grade ferrous sulfate technique, can effectively realizes the cycle of resource
It utilizes, realizes higher economic benefit.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of pyrite-based sulfuric acid production slag extraction feed grade ferrous sulfate technique,
Feed grade ferrous sulfate is produced using pyrite cinder, and without row outside any pollutant.
A kind of pyrite-based sulfuric acid production slag extraction feed grade ferrous sulfate technique, includes the following steps：
A, it leaches：Sulfuric acid to leach main component with a concentration of 80 ~ 95% is Fe203Pyrite cinder；
B, it detaches：The reaction slurry obtained in press filtration separating step a, solid return to sulphuric acid fluidized bed roaster；Separating rate is fast, treating capacity
Greatly, filter cake moisture is low；
C, it refines：Reducing agent and Hydrodearsenic Catalyst removal impurity is added in the filtrate obtained at a suitable temperature into step b；
D, secondary separation：Using the reaction slurry obtained in step with centrifugal separation c, solid returns to sulphuric acid fluidized bed roaster；Separation is thorough,
Good product quality；
E, cooling：Separation liquid in step d cools down under field conditions (factors), and errous sulfate crystal is precipitated；
F, it detaches：The slurry obtained in step with centrifugal separation e, solid are feed grade ferrous sulfate；Separating rate is fast, treating capacity
Greatly, filter cake moisture is low；
It g, will be in the mother liquor return to step a that isolated in step f.
Further, the sulfuric acid concentration in rate-determining steps a is in 33-35%, reaction temperature at 80-90 DEG C, the reaction time 100 ~
Step b is carried out after 150 minutes.
Further, for temperature at 60-80 DEG C, reducing agent is iron powder in the step c, and Hydrodearsenic Catalyst is vulcanized sodium.
Beneficial effects of the present invention：Feed grade ferrous sulfate is extracted using pyrite cinder, it is possible to reduce slag amount 30-
40%, while by 4-6 times of slag value promotion, good benefit is created for enterprise, and entire production process does not generate any dirt
Object is contaminated, recycling for resource is fully achieved.
Description of the drawings
Fig. 1 is that pyrite cinder produces feed grade ferrous sulfate process flow chart.
Specific implementation mode
Embodiment 1
A, it leaches：With self-produced sulfuric acid (80%）Leaching main component is Fe203Pyrite cinder；Control sulfuric acid concentration in solution
33%, reaction temperature carries out step b after 90 DEG C, 150 minutes reaction time；
B, it detaches：The reaction slurry obtained in press filtration step with centrifugal separation a, solid return to sulphuric acid fluidized bed roaster；
C, it refines：Reducing agent iron powder is added in the filtrate that temperature obtains at 80 DEG C into step b and Hydrodearsenic Catalyst vulcanized sodium goes to clean
Matter；
D, secondary separation：Using the reaction slurry obtained in step with centrifugal separation c, solid returns to sulphuric acid fluidized bed roaster；
E, cooling：Separation liquid in step d cools down under field conditions (factors), and errous sulfate crystal is precipitated；
F, it detaches：The slurry obtained in step with centrifugal separation e, solid are feed grade ferrous sulfate；
It g, will be in the mother liquor return to step a that isolated in step f.
Solid obtained is feed grade ferrous sulfate in step f, realizes that slag conversion ratio is 30%.
Embodiment 2
A, it leaches：With self-produced sulfuric acid (90%）Leaching main component is Fe203Pyrite cinder；Control sulfuric acid concentration in solution
35%, reaction temperature carries out step b after 80 DEG C, 100 minutes reaction time；
B, it detaches：The reaction slurry obtained in press filtration step with centrifugal separation a, solid return to sulphuric acid fluidized bed roaster；
C, it refines：Reducing agent iron powder is added in the filtrate that temperature obtains at 80 DEG C into step b and Hydrodearsenic Catalyst vulcanized sodium goes to clean
Matter；
D, secondary separation：Using the reaction slurry obtained in step with centrifugal separation c, solid returns to sulphuric acid fluidized bed roaster；
E, cooling：Separation liquid in step d cools down under field conditions (factors), and errous sulfate crystal is precipitated；
F, it detaches：The slurry obtained in step with centrifugal separation e, solid are feed grade ferrous sulfate；
It g, will be in the mother liquor return to step a that isolated in step f.
Solid obtained is feed grade ferrous sulfate in step f, realizes that slag conversion ratio is 36%.
Embodiment 3
A, it leaches：With self-produced sulfuric acid (95%）Leaching main component is Fe203、SiO2With the pyrite cinder of FeS；It controls in solution
For sulfuric acid concentration 34%, reaction temperature carries out step b after 85 DEG C, 120 minutes reaction time；
B, it detaches：The reaction slurry obtained in press filtration separating step a, solid return to sulphuric acid fluidized bed roaster；
C, it refines：Reducing agent iron powder is added in the filtrate that temperature obtains at 70 DEG C into step b and Hydrodearsenic Catalyst vulcanized sodium goes to clean
Matter；
D, secondary separation：Using the reaction slurry obtained in step with centrifugal separation c, solid returns to sulphuric acid fluidized bed roaster；
E, cooling：Separation liquid in step d cools down under field conditions (factors), and errous sulfate crystal is precipitated；
F, it detaches：The slurry obtained in step with centrifugal separation e, solid are feed grade ferrous sulfate；
It g, will be in the mother liquor return to step a that isolated in step f.
Solid obtained is feed grade ferrous sulfate in step f, realizes that slag conversion ratio is 34%.
Claims (5)
1. a kind of pyrite-based sulfuric acid production slag extracts feed grade ferrous sulfate technique, which is characterized in that include the following steps：
A, it leaches：Sulfuric acid to leach main component with a concentration of 80 ~ 95% is Fe203Pyrite cinder；
B, it detaches：The reaction slurry obtained in press filtration separating step a, solid return to sulphuric acid fluidized bed roaster；
C, it refines：Reducing agent and Hydrodearsenic Catalyst removal impurity is added in the filtrate obtained at a suitable temperature into step b；
D, secondary separation：Using the reaction slurry obtained in step with centrifugal separation c, solid returns to sulphuric acid fluidized bed roaster；
E, cooling：Separation liquid in step d cools down under field conditions (factors), and errous sulfate crystal is precipitated；
F, it detaches：The slurry obtained in step with centrifugal separation e, solid are feed grade ferrous sulfate；
It g, will be in the mother liquor return to step a that isolated in step f.
2. a kind of pyrite-based sulfuric acid production slag described in claim 1 extracts feed grade ferrous sulfate technique, which is characterized in that described
For sulfuric acid concentration in step a in 33-35%, reaction temperature carries out step b after 80-90 DEG C, 100 ~ 150 minutes reaction time.
3. a kind of pyrite-based sulfuric acid production slag described in claim 1 extracts feed grade ferrous sulfate technique, which is characterized in that described
Temperature is at 60-80 DEG C in step c.
4. a kind of method of pyrite-based sulfuric acid production slag extraction feed grade ferrous sulfate described in claim 1, which is characterized in that institute
It is iron powder to state reducing agent in step c.
5. a kind of method of pyrite-based sulfuric acid production slag extraction feed grade ferrous sulfate described in claim 1, which is characterized in that institute
It is vulcanized sodium to state Hydrodearsenic Catalyst in step c.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810877757.7A CN108609663A (en) | 2018-08-03 | 2018-08-03 | A kind of pyrite-based sulfuric acid production slag extraction feed grade ferrous sulfate technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810877757.7A CN108609663A (en) | 2018-08-03 | 2018-08-03 | A kind of pyrite-based sulfuric acid production slag extraction feed grade ferrous sulfate technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108609663A true CN108609663A (en) | 2018-10-02 |
Family
ID=63666764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810877757.7A Pending CN108609663A (en) | 2018-08-03 | 2018-08-03 | A kind of pyrite-based sulfuric acid production slag extraction feed grade ferrous sulfate technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108609663A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255623A (en) * | 2019-07-24 | 2019-09-20 | 中国科学院过程工程研究所 | Iron arsenic separation method, separator and its application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1114638A (en) * | 1994-07-08 | 1996-01-10 | 江兴全 | Process for producing ferrous sulfate by using sulfuric acid to leach pyrite cinder |
| CN101817563A (en) * | 2010-04-10 | 2010-09-01 | 湖南新恒光科技有限公司 | Process for preparing high-purity ferrous sulfate by adopting pyrite smelting slag |
| US20130052106A1 (en) * | 2010-05-17 | 2013-02-28 | Tioxide Europe Limited | Process for the production of ferrous sulphate monohydrate |
-
2018
- 2018-08-03 CN CN201810877757.7A patent/CN108609663A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1114638A (en) * | 1994-07-08 | 1996-01-10 | 江兴全 | Process for producing ferrous sulfate by using sulfuric acid to leach pyrite cinder |
| CN101817563A (en) * | 2010-04-10 | 2010-09-01 | 湖南新恒光科技有限公司 | Process for preparing high-purity ferrous sulfate by adopting pyrite smelting slag |
| US20130052106A1 (en) * | 2010-05-17 | 2013-02-28 | Tioxide Europe Limited | Process for the production of ferrous sulphate monohydrate |
Non-Patent Citations (2)
| Title |
|---|
| 田伟军: "钛白副产绿矾制备饲料级硫酸亚铁的工艺与生产", 《饲料与畜牧》 * |
| 舒均杰 等: "由钛白废酸和硫铁矿烧渣制备饲料级硫酸亚铁", 《无机盐工业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255623A (en) * | 2019-07-24 | 2019-09-20 | 中国科学院过程工程研究所 | Iron arsenic separation method, separator and its application |
| CN110255623B (en) * | 2019-07-24 | 2021-12-14 | 中国科学院过程工程研究所 | Iron and arsenic separation method, separation device and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5453253A (en) | Method of reprocessing jarosite-containing residues | |
| CN101845562B (en) | Improved device and method for producing electrolytic manganese metal by two-ore method | |
| CN109554546B (en) | Method for harmless treatment and resource utilization of electrolytic manganese slag | |
| CN101760613B (en) | Method for leaching zinc-containing ores | |
| CN105506294A (en) | Method for comprehensively recovering manganese and lead from electrolytic manganese anode slime | |
| CN111647754A (en) | Comprehensive utilization method of zinc-containing dust and sludge in steel plant | |
| CN104445431A (en) | Method for preparing high-purity iron oxide red from pyrites slag | |
| CN107140718A (en) | A kind of utilize couples the method that external field treatment red mud prepares iron aluminium flocculating agent | |
| CN106542506A (en) | A kind of method that selenium is reclaimed from heavy tellurium waste liquid | |
| CN108609663A (en) | A kind of pyrite-based sulfuric acid production slag extraction feed grade ferrous sulfate technique | |
| US4789446A (en) | Method of processing residues from the hydrometallurgical production of zinc | |
| CN109607622A (en) | A method of iron oxide red product is prepared using the heavy scum of zinc hydrometallurgy hematite process | |
| CN105671324A (en) | Method for preparing ammonium rhenate from rhenium-enriched slags | |
| CN105523590A (en) | Method for preparing ferric chloride | |
| CN104402062A (en) | Method for preparing ferric chloride from pyrite cinder | |
| CN104445756A (en) | Comprehensive treatment method for organic acid-containing wastewater and iron mud | |
| CN109399723B (en) | Method for producing electrolytic manganese dioxide by using manganese tailings and titanium dioxide waste sulfuric acid | |
| CN108977672B (en) | Method for preparing iron molybdate by taking molybdenum-removing slag as raw material | |
| CN208980345U (en) | A kind of pyrite-based sulfuric acid production slag extracts the preparation system of feed grade ferrous sulfate | |
| CN105692954A (en) | Method of reducing residue yield during acidic wastewater treatment | |
| CN115403049A (en) | Purification method and purification system of quartz sand | |
| CN108751139A (en) | A kind of comprehensive utilization process of ardealite, red mud and high-sulfur bauxite | |
| CN110734093B (en) | Method for co-producing manganese hydroxide and sulfuric acid or ammonium sulfite by electrolyzing metal manganese waste residue | |
| CN104988337B (en) | The bone coal navajoite extract technology that a kind of spent acid recycles | |
| CN110004292B (en) | Process for purifying waste manganese sulfate solution to reduce content of calcium and magnesium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181002 |