CN107364899A - A kind of method that alum iron is produced using smelted furnace cinder - Google Patents
A kind of method that alum iron is produced using smelted furnace cinder Download PDFInfo
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- CN107364899A CN107364899A CN201710600069.1A CN201710600069A CN107364899A CN 107364899 A CN107364899 A CN 107364899A CN 201710600069 A CN201710600069 A CN 201710600069A CN 107364899 A CN107364899 A CN 107364899A
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- clinker
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- 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
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- Manufacture And Refinement Of Metals (AREA)
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Abstract
The invention discloses a kind of method that alum iron is produced using smelted furnace cinder, the preparation method of alum iron includes following steps：（1）Cooling：The clinker of blast furnace output is subjected to natural cooling, the final temperature after cooling is less than 60 DEG C；（2）Crush：Clinker after cooling is added into industrial chlorinations sodium, crushed together in grinder；（3）Ore Leaching：Clinker after crushing is poured into Leach reaction is carried out in the reaction tank for store dilute sulfuric acid, control suitable technical indicator, stirred, the reaction time is 1 1.5h；（4）Filtering：Reacted solution is filtered；（5）Distillation：Solution after filtering is subjected to distillation until producing crystallization, 55~68 DEG C of vapo(u)rizing temperature, mixing speed is 20r/min 30r/min；（6）Crystallization：Work as step（5）In just produce crystallization when stop heating, carry out decrease temperature crystalline；（7）Secondary filter：Crystal after crystallization is filtered out.Beneficial effect is：Clinker can be reused, improve the utilization rate of clinker, it is simple in construction, it is easy to operate, it is economic and environment-friendly.
Description
Technical field
The present invention relates to green vitriol production technical field, more particularly to a kind of method that alum iron is produced using smelted furnace cinder.
Background technology
Alum iron alleged by the present invention, scientific name are called ferrous sulfate, alias green vitriol, alum iron be industrially used to manufacturing molysite,
Ink, iron oxide red and indigo-blue, it is also possible to make mordant, tanning extracts, water purification agent, timber preservative and disinfectant etc..
In the prior art, metallic iron is dissolved in dilute sulfuric acid and can be prepared by ferrous sulfate.It is that iron wire or iron filings are first used into hydroxide
Sodium solution is handled except degreasing, to be put into after being eluted with water in 15%~20% sulfuric acid solution, heating makes its dissolving, until not molten
Residue no longer dissolve untill.Solution is filtered out and is transferred in flask, adds sulfuric acid to be acidified to and Congo red reacts acid.Cooling
Lead to hydrogen sulfide afterwards and reach saturation, stopper bottle stopper, stand 2~3 days, then flask is placed in water-bath and heats and be filtered to remove carbon, carbon
Compound, sulfide precipitation.It filtrate be transferred in Wurtz flask, be passed through anaerobic CO2In the case of, it is concentrated by evaporation solution
To the half of original volume.Make solution in CO2Stood overnight in gas, you can separate out the crystallization of ferrous sulfate.
A kind of byproduct caused by blast furnace ironmaking, through processing, it is mainly used in making construction material.Blast furnace production process
In, enter the various former, fuel of stove after smelting, in addition to molten iron and byproduct blast furnace gas is obtained, the gangue in iron ore, combustion
Ash content in material merges with flux and just forms liquid slag, and its general temperature is 1450~1550 DEG C, is regularly arranged from cinder notch, iron mouth
Go out.The slag discharged from cinder notch is generally referred to as " upper slag ", is referred to as " slag " from iron mouth in company with molten iron discharge, in slag often
It is mixed with a small amount of molten iron.The chemical composition of blast-furnace slag is depended in material composition, smelt iron kind, operating method and smelting process
The working of a furnace changes.CaO, MgO, SiO in blast-furnace slag2And Al2O3For main composition, more than the 95% of total amount is accounted for.In addition, in slag
Also containing elements such as the sulphur of some, titanium, iron, potassium, sodium.And when separating clinker, still have a certain amount of molten iron and be bonded in
On clinker, it will cause greatly to waste if this clinker directly abandons.The present invention can be incited somebody to action using smelted furnace cinder production alum iron
Ferro element in clinker is reused, and improves the utilization rate of clinker.
The content of the invention
The purpose of the present invention is that to solve the above problems and provides a kind of side that alum iron is produced using smelted furnace cinder
Method.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of method that alum iron is produced using smelted furnace cinder, it is characterised in that：The preparation method of alum iron includes following steps：
（1）Cooling：The clinker of blast furnace output is subjected to natural cooling, the final temperature after control cooling is less than 60 DEG C；
（2）Crush：Clinker after cooling adds industrial chlorinations sodium, is crushed together in grinder, and industrial chlorinations sodium adds
Enter the 3-5% that amount is slag weight；
（3）Ore Leaching：Clinker after crushing is poured into Leach reaction is carried out in the reaction tank for store dilute sulfuric acid, it is suitable to control
Technical indicator, stirring, reaction time 1-1.5h；
（4）Filtering：Solution after Leach reaction is filtered；
（5）Distillation：Solution after filtering is subjected to distillation and concentration, 55~68 DEG C of vapo(u)rizing temperature, mixing speed 20r/min-
30r/min；
（6）Crystallization：Work as step（5）Middle distilled and concentrated solution stops heating when just having produced crystallization, carries out decrease temperature crystalline；
（7）Secondary filter：Crystal after crystallization is filtered out；
（8）Washing：Using the washed crystal filtered out of absolute ethyl alcohol, the moisture on surface is removed；
（9）Storage：By step（8）In obtained crystal be put into and be put into closed container after drier is dried and stored；
（10）Waste disposal：By step（4）In after the residue that filters out carries out neutralisation treatment using limewash, filled or
Person is used as the raw material of construction material.
The beneficial effects of the present invention are：Clinker can be reused, improve the utilization rate of clinker, it is of the invention
Industrial chlorinations sodium is added in clinker after the cooling period, clinker can be made to become loose, improve activity of the clinker in dilute sulfuric acid,
Be advantageous to the leaching of iron ion；The present invention is simple in construction, easy to operate, economic and environment-friendly.
Embodiment
With reference to embodiment, the invention will be further described：
A kind of method that alum iron is produced using smelted furnace cinder, it is characterised in that：The preparation method of alum iron includes following steps：
（1）Cooling：The clinker of blast furnace output is subjected to natural cooling, the final temperature after control cooling is less than 60 DEG C；
（2）Crush：Clinker after cooling adds industrial chlorinations sodium, is crushed together in grinder, and industrial chlorinations sodium adds
Enter 4% that amount is slag weight；
（3）Ore Leaching：Clinker after crushing is poured into Leach reaction is carried out in the reaction tank for store dilute sulfuric acid, it is suitable to control
Technical indicator, stirring, reaction time 1-1.5h；
The appropriate technology index is：1.0~2.0mol/L of sulfuric acid concentration, liquid solid product mass ratio 6：1 L / kg；Temperature 70
~100 DEG C, 600~800r/min of mixing speed, normal pressure；
（4）Filtering：Solution after Leach reaction is filtered；
（5）Distillation：Solution after filtering is subjected to distillation and concentration, 60 DEG C of vapo(u)rizing temperature, mixing speed 20r/min-30r/
min；
（6）Crystallization：Work as step（5）Middle distilled and concentrated solution stops heating when just having produced crystallization, carries out decrease temperature crystalline；
（7）Secondary filter：Crystal after crystallization is filtered out；
（8）Washing：Using the washed crystal filtered out of absolute ethyl alcohol, the moisture on surface is removed；
（9）Storage：By step（8）In obtained crystal be put into and be put into closed container after drier is dried and stored；
（10）Waste disposal：By step（4）In after the residue that filters out carries out neutralisation treatment using limewash, filled or
Person is used as the raw material of construction material, by step（7）The extraction raffinate return to step that middle secondary filter comes out（3）Acid adjustment reuse.
In the present embodiment, the step（2）Grain diameter after middle crushing is no more than 5 mm.
In the present embodiment, the step（9）In drying temperature be 50 DEG C -55 DEG C；Drying time 3min-5min.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its Xiao Wu circle
It is fixed.
Claims (3)
- A kind of 1. method that alum iron is produced using smelted furnace cinder, it is characterised in that：The preparation method of alum iron includes following step Suddenly：（1）Cooling：The clinker of blast furnace output is subjected to natural cooling, the final temperature after control cooling is less than 60 DEG C；（2）Crush：Clinker after cooling adds industrial chlorinations sodium, is crushed together in grinder, and industrial chlorinations sodium adds Enter the 3-5% that amount is slag weight；（3）Ore Leaching：Clinker after crushing is poured into Leach reaction is carried out in the reaction tank for store dilute sulfuric acid, it is suitable to control Technical indicator, stirring, reaction time 1-1.5h；The appropriate technology index is：1.0~2.0mol/L of sulfuric acid concentration, liquid solid product mass ratio 6：1 L / kg；Temperature 70 ~100 DEG C, 600~800r/min of mixing speed, normal pressure；（4）Filtering：Solution after Leach reaction is filtered；（5）Distillation：Solution after filtering is subjected to distillation and concentration, 55~68 DEG C of vapo(u)rizing temperature, mixing speed 20r/min- 30r/min；（6）Crystallization：Work as step（5）Middle distilled and concentrated solution stops heating when just having produced crystallization, carries out decrease temperature crystalline；（7）Secondary filter：Crystal after crystallization is filtered out；（8）Washing：Using the washed crystal filtered out of absolute ethyl alcohol, the moisture on surface is removed；（9）Storage：By step（8）In obtained crystal be put into and be put into closed container after drier is dried and stored；（10）Waste disposal：By step（4）In after the residue that filters out carries out neutralisation treatment using limewash, filled or Person is used as the raw material of construction material, by step（7）The extraction raffinate return to step that middle secondary filter comes out（3）Acid adjustment reuse.
- A kind of 2. method that alum iron is produced using smelted furnace cinder according to claim 1, it is characterised in that：The step （2）Grain diameter after middle crushing is no more than 5 mm.
- A kind of 3. method that alum iron is produced using smelted furnace cinder according to claim 1, it is characterised in that：The step （9）In drying temperature be 50 DEG C -55 DEG C；Drying time 3min-5min.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2310314B1 (en) * | 1975-05-06 | 1981-04-17 | Solex Res Corp Japan | |
| CN1114638A (en) * | 1994-07-08 | 1996-01-10 | 江兴全 | Process for producing ferrous sulfate by using sulfuric acid to leach pyrite cinder |
| CN103922423A (en) * | 2014-03-31 | 2014-07-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Method of improving vanadium slag grade by utilizing titanium white waste acid |
-
2017
- 2017-07-21 CN CN201710600069.1A patent/CN107364899B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2310314B1 (en) * | 1975-05-06 | 1981-04-17 | Solex Res Corp Japan | |
| CN1114638A (en) * | 1994-07-08 | 1996-01-10 | 江兴全 | Process for producing ferrous sulfate by using sulfuric acid to leach pyrite cinder |
| CN103922423A (en) * | 2014-03-31 | 2014-07-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Method of improving vanadium slag grade by utilizing titanium white waste acid |
Non-Patent Citations (1)
| Title |
|---|
| 第3期: ""以硫铁矿沸腾炉渣生产硫酸亚铁"", 《污染防治技术》 * |
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