CN207129972U - A kind of device that zinc ferrite is prepared using zinc leaching residue - Google Patents
A kind of device that zinc ferrite is prepared using zinc leaching residue Download PDFInfo
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- CN207129972U CN207129972U CN201720779355.4U CN201720779355U CN207129972U CN 207129972 U CN207129972 U CN 207129972U CN 201720779355 U CN201720779355 U CN 201720779355U CN 207129972 U CN207129972 U CN 207129972U
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Abstract
The utility model discloses a kind of device that zinc ferrite is prepared using zinc leaching residue, including, grinding attachment, batch mixer, ball press, dryer, rotary hearth furnace, the granulating unit being sequentially connected, charging aperture and discharging opening, granulating unit, once grind screening device, leaching device and secondary grinding screening device.Direct utilization to zinc leaching residue is realized by the use of said apparatus to prepare the zinc ferrite of high economic value.
Description
Technical field
It the utility model is related to field of metallurgy, more particularly to a kind of device that zinc ferrite is prepared using zinc leaching residue.
Background technology
Zinc hydrometallurgy has worldwide accounted for more than the 80% of zinc abstraction total amount, is the development side of world's zinc metallurgy production
To.Zinc hydrometallurgy process mainly includes：Conventional wet lay smelting process, high temperature hot acid extract technology and zinc sulfide concentrates oxygen pressure are direct
Extract technology, wherein zinc sulfide concentrates oxygen pressure direct leaching process are that the new technology of current zinc hydrometallurgy is also development trend.But
Domestic main flow or conventional extract technology and high temperature hot acid extract technology at present.
Which kind of technique no matter zinc hydrometallurgy use, finally all can a considerable amount of leached muds of output.These leach solid impurity particle
It is tiny and containing the valuable element such as a certain amount of zinc, lead, indium, gold, silver, it will be made if this part slag cannot effectively utilize
Into serious environmental pollution and the wasting of resources.In order to comprehensively utilize leached mud, reduce environmental pollution while substantially effectively utilize
Secondary resource, the double benefit of economy and environment is obtained, realizes environment, resource and the sustainable development of society, domestic and foreign scholars
Substantial amounts of research is done, it is proposed that a series of method.These methods are summed up on technology type can be divided into wet processing
And thermal process.
Wet processing is usually using hot acid extract technology processing zinc leaching residue, although the method can be extracted in zinc leaching residue
Zinc, but, technological process long the shortcomings of big with the quantity of slag.Thermal process is using rotary kiln processing zinc leaching residue.The technique
It is low (being less than 85%) to there is zinc recovery, noble silver, indium recovery low (being less than 40%), consumption of coal amount are big.And rotary kiln
Equipment operation stability it is poor, high-temperature region ring formation is serious, and refractory consumption rate is larger, and equipment maintenance cost is high.It can produce simultaneously
Raw substantial amounts of iron content, zinc kiln slag, still produce substantial amounts of secondary solid discarded object.
Zinc in zinc leaching residue mainly exists in the form of zinc ferrite, and zinc ferrite is important soft magnetic materials, and
The catalyst of butylene oxidation-dehydrogenation and with very highlight catalytic active and the semiconductor catalyst sensitive to visible ray.Meanwhile iron
The transparent inorganic pigment of sour zinc or function admirable, there is the distinguishing features such as heat-resisting, fast light, nontoxic and antirust.The patent is related to
A kind of System and method for that zinc ferrite is manufactured with zinc leaching residue.
Utility model content
In order to solve the above-mentioned problems in the prior art, prepared the utility model proposes one kind using zinc leaching residue
The device of zinc ferrite and the method for preparing zinc ferrite.
The disclosed method for utilizing zinc leaching residue to prepare zinc ferrite of the utility model is as follows：
A kind of method that zinc ferrite is prepared using zinc leaching residue, is comprised the steps of：
Step 1, by zinc leaching residue drying and fine grinding, wherein preferably, zinc leaching residue, which is oven-dried to moisture, is less than 1% simultaneously
It is below 0.074mm to be finely ground to granularity；
Step 2, the zinc leaching residue after fine grinding in step 1 is added into iron oxide red and is pressed into pelletizing, wherein preferably, compacting
The pressure of pelletizing is 19-25MPa to ensure the compactness of pelletizing and material is fully contacted；
Step 3, pelletizing is dried and is sent into rotary hearth furnace heating and is reacted, it is preferable that pelletizing is oven-dried to moisture 1%
Below；
Step 4, by the pelletizing water quenching cooling after step 3 is handled and carry out mill ore magnetic selection；
Step 5, the ferrous acid zinc powder after mill ore magnetic selection is leached using sulfuric acid；
Step 6, the solution ph after leaching is adjusted to 5.1-5.4, and adds iron hydroxide；
Step 7, ferrous acid zinc powder is obtained after the solution handled by step 6 is carried out into mill ore magnetic selection again.
Further, the mass fraction of the zinc in zinc leaching residue is 10-20%, and the mass fraction of iron is 20-25%, lead
Mass fraction is 2-5%.
Further, the zinc leaching residue in step 2 and iron oxide red and water are according to mass ratio 100:3-6:10-15 is matched somebody with somebody
Material.
Further, preheating zone, zinc sulfate resolver and main reaction region are divided into inside the rotary hearth furnace in step 3.Pelletizing
A part of ash content and impurity in pelletizing are vapored away 300-500 DEG C of preheating zone first, subsequently enters 1050-1100 DEG C of sulphur
Sour zinc resolver, in zinc sulfate resolver, zinc sulfate resolves into zinc oxide and sulfur dioxide.900-1000 DEG C is then gone through,
Preferably 950-1000 DEG C of main reaction region, three oxidations two in the di-iron trioxide, zinc leaching residue in main reaction region, iron oxide red
The zinc ferrite of iron and zinc oxide reaction generation stabilization.
Further, the magnetic field intensity of the mill ore magnetic selection in step 5 is 1000-1200Oe, and magnetic separation is carried out in step 7
Magnetic field intensity is 600-800Oe.
Further, in step 5, in order that zinc ferrite and gangue are separated, be milled down to pelletizing with ore mill-
Below 0.0325mm.
Further, in step 6, the zinc ferrite taste of ferrous acid zinc powder is more than 80%, concentration 40-60g/L's
Sulfuric acid is leached, and oxide and hydrogen ion reaction the generation lead ion, indium ion of some lead, indium in pelletizing enter solution
In.
Further, extraction time 15-85min, preferably 20-70min, leaching process are stirred continuously, and make gangue phase
Fully dissociated with zinc ferrite.
Further, the effect for iron hydroxide being added in step 5 is to remove silicon.The concentration of iron hydroxide is preferably 8-12g/
L, due to the charge contrast of iron hydroxide and silica in the solution, so iron hydroxide and silica form glue
Shape coagulation.
Further, the zinc ferrite grade that the magnetic separation by step 7 obtains is more than 98% ferrous acid zinc powder.
The invention also discloses a kind of device for performing the above method, device includes：
Grinding attachment, grinding attachment have charging aperture and discharging opening；
Batch mixer, batch mixer has to be set with feeding mouth, filling opening and discharging opening, the feeding mouth of batch mixer with the ore grinding
Standby discharging opening is connected；
Ball press, ball press have feeding mouth and discharging opening, and the discharging opening of batch mixer is connected with the feeding mouth of ball press；
Dryer, the discharging opening of ball press are connected with dryer；
Rotary hearth furnace, rotary hearth furnace are provided with charging aperture and discharging opening, preheating zone that the burner hearth of rotary hearth furnace is set gradually, resolver,
Main reaction region and discharge zone, dryer are connected with the charging aperture of rotary hearth furnace, and the charging aperture of rotary hearth furnace is located at preheating zone, rotary hearth furnace
Discharging opening be located at discharge zone；
Granulating unit, charging aperture and discharging opening, the charging aperture of granulating unit are connected with the discharging opening of rotary hearth furnace；For that will turn
The pelletizing generated in the stove of bottom carries out water quenching cooling；
Screening device is once ground, the discharging opening for once grinding screening device and granulating unit connects, for the pelletizing after water quenching to be entered
Row mill ore magnetic selection；
Leaching device, leaching device are provided with charging aperture and discharging opening, the charging aperture of leaching and the discharging for once grinding screening device
Mouth is connected；
Secondary grinding screening device, secondary grinding screening device are provided with charging aperture and discharging opening, the charging aperture of secondary grinding screening device and leaching
The discharging opening for going out device is connected.
Further, preheating zone is separated with resolver by preheating zone partition wall, and resolver passes through resolver with main reaction region
Partition wall separates；Main reaction region and discharge zone are separated by main reaction region partition wall.
Further, resolver is provided with heat-accumulating burner and heated, and is protected in heating process by nitrogen.
Further, discharge zone sets discharging screw to be used for the pelletizing after main reaction region reaction is terminated and discharges stove
Body.
Further, leaching system has agitating device.
Further, dryer has a rotatable roller, rotatable roller by driving belt driveably with it is electronic
Machine is connected.
By using above-mentioned technical proposal, following many beneficial effects are achieved：
(1) the utility model realizes that zinc leaching residue directly utilizes the zinc ferrite for preparing high economic value.
(2) the characteristics of utilizing rotary hearth furnace subregion, zinc oxide and di-iron trioxide reaction generation zinc ferrite is realized, increases ferrous acid
The rate of recovery of zinc.
(3) the utility model obtains the zinc ferrite of high-quality using pyrogenic process with the method that wet method is combined.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage are in the description carried out to embodiment is combined with accompanying drawing
It will be apparent from and be readily appreciated that, wherein：
Fig. 1 shows the schematic flow sheet for the method that zinc ferrite is prepared using zinc leaching residue.
Fig. 2 shows the schematic device for preparing zinc ferrite according to the utility model embodiment.
Embodiment
It should be appreciated that shown embodiment of the present utility model is merely illustrative in the exemplary embodiment.Although
Only a small number of embodiments are described in detail in the utility model, but those skilled in the art are readily appreciated that and taken off in not essence
In the case of teaching from the utility model theme, a variety of modifications are feasible.Correspondingly, all such modifications should all be wrapped
Include in the scope of the utility model.In the case where not departing from purport of the present utility model, following exemplary can be implemented
Design, operating condition and parameter of example etc. make others and replace, change, change and delete.
Embodiment one
As shown in Figures 1 and 2, the zinc leaching residue iron content 21% in the present embodiment, zinc 11% and lead 2%.In step
In S101, zinc leaching residue is dried to moisture less than 1%, it is then levigate to below 0.074mm.Then by levigate zinc leaching residue
Batch mixer 3 is poured into from feed bin 1 and feed bin 2 with iron oxide red, while adds water, zinc leaching residue, iron oxide red and water are according to mass ratio
100:3:10 ratio is mixed.Mixed material is then sent into ball press 4, pressure ball is carried out at step S102.Ball press
Stress control is in 20MPa.Then at step S103, the pelletizing of compacting is sent in dryer 5 and dried.Then in step
In rapid S104, the pelletizing of drying is distributed into rotary hearth furnace 6,350 DEG C of the preheating zone temperature of rotary hearth furnace 6, zinc sulfate resolver temperature
1060 DEG C, main reaction region temperature setting is 960 DEG C.Pelletizing realizes that zinc sulfate decomposes generation zinc oxide in zinc sulfate resolver,
Ferrous oxide and zinc oxide reaction generation zinc ferrite in main reaction region.Then, the pelletizing after calcining discharges rotary hearth furnace 6 and passes through water
Quench, ground at step S105 in first time in screening device 7 and carry out first time mill ore magnetic selection, pelletizing is ground to below 325 mesh first,
First time magnetic separation, magnetic field intensity 1000Oe are then carried out, the first magnetic separation obtains the ferrous acid zinc powder and tailings of 82% grade.Then will
Tailings is discharged, and ferrous acid zinc powder is sent into leaching device 8 at step S106 is leached, leachate sulfuric acid concentration 45g/L, leaching
Go out 38 DEG C of temperature, extraction time 25min.Leach process to terminate pH value of solution being adjusted to 5.2, according to 9g/L's at step S107
Concentration adds iron hydroxide and carries out removing silicon.Except the solution of complete silicon is carried out second at step S108 by secondary grinding screening device 9
Magnetic separation, magnetic field intensity 600Oe.Then obtain the ferrous acid zinc powder that grade is 98.52%.
Embodiment two
As shown in Figures 1 and 2, the zinc leaching residue iron content 23% in the present embodiment, zinc 15% and lead 2.8%.In step
In S101, zinc leaching residue is dried to moisture less than 1%, it is then levigate to below 0.074mm.Then by levigate zinc leaching residue
Batch mixer 3 is poured into from feed bin 1 and feed bin 2 with iron oxide red, while adds water, zinc leaching residue, iron oxide red and water are according to mass ratio
100:5:12 ratio is mixed.Mixed material is then sent into ball press 4, pressure ball is carried out at step S102.Ball press
Stress control is in 20MPa.Then at step S103, the pelletizing of compacting is sent in dryer 5 and dried.Then in step
In rapid S104, the pelletizing of drying is distributed into rotary hearth furnace 6,400 DEG C of the preheating zone temperature of rotary hearth furnace 6, zinc sulfate resolver temperature
1080 DEG C, main reaction region temperature setting is 980 DEG C.Pelletizing realizes that zinc sulfate decomposition, ferrous oxide and zinc oxide are anti-in three areas
The process of zinc ferrite should be generated.Then, the pelletizing discharge rotary hearth furnace 6 and after water quenching after calcining, at step S105
Mill selects progress first time mill ore magnetic selection in system 7 for the first time, and pelletizing is ground to below 325 mesh first, then carries out first time magnetic
Choosing, magnetic field intensity 1100Oe.Magnetic separation terminates to obtain the ferrous acid zinc powder of 83% grade and tailings.Then tailings is discharged, in step
Ferrous acid zinc powder is sent into leaching device 8 at S106 to be leached, leachate sulfuric acid concentration 48g/L, 43 DEG C of extraction temperature, leached
Time 50min.Leach process to terminate pH value of solution being adjusted to 5.3, hydroxide is added according to 11g/L concentration at step S107
Iron carries out removing silicon.Except the solution of complete silicon selects system 9 to carry out second of magnetic separation, magnetic field intensity at step S108 by secondary grinding
700Oe.Then obtain the ferrous acid zinc powder that grade is 98.99%.
Embodiment three
As shown in Figures 1 and 2, the zinc leaching residue iron content 25% in the present embodiment, zinc 18% and lead 4.6%.In step
In S101, zinc leaching residue is dried to moisture less than 1%, it is then levigate to below 0.074mm.Then by levigate zinc leaching residue
Batch mixer 3 is poured into from feed bin 1 and feed bin 2 with iron oxide red, while adds water, zinc leaching residue, iron oxide red and water are according to mass ratio
100:6:14 ratio is mixed.Mixed material is then sent into ball press 4, pressure ball is carried out at step S102.Ball press
Stress control is in 20MPa.Then at step S103, the pelletizing of compacting is sent in dryer 5 and dried.Then in step
In rapid S104, the pelletizing of drying is distributed into rotary hearth furnace 6,450 DEG C of the preheating zone temperature of rotary hearth furnace 6, zinc sulfate resolver temperature
1090 DEG C, main reaction region temperature setting is 990 DEG C.Pelletizing realizes that zinc sulfate decomposition, ferrous oxide and zinc oxide are anti-in three areas
The process of zinc ferrite should be generated.Then, the pelletizing discharge rotary hearth furnace 6 and after water quenching after calcining, at step S105
Mill selects progress first time mill ore magnetic selection in system 7 for the first time, and pelletizing is ground to below 325 mesh first, then carries out first time magnetic
Choosing, magnetic field intensity 1200Oe.Magnetic separation terminates to obtain the ferrous acid zinc powder of 83.23% grade and tailings.Then tailings is discharged, in step
Ferrous acid zinc powder is sent into leaching device 8 at rapid S106 to be leached, leachate sulfuric acid concentration 52g/L, 45 DEG C of extraction temperature, leaching
Go out time 65min.Leach process to terminate pH value of solution being adjusted to 5.6, hydrogen-oxygen is added according to 12g/L concentration at step S107
Change iron to carry out removing silicon.Except the solution of complete silicon selects system 9 to carry out second of magnetic separation, magnetic field intensity at step S108 by secondary grinding
800Oe.Then obtain the ferrous acid zinc powder that grade is 99.23%.
Preferred embodiment of the present utility model is the foregoing is only, is not used for limiting practical range of the present utility model；
If not departing from spirit and scope of the present utility model, the utility model is modified or equivalent substitution, all should covered
Among the protection domain of the utility model claims.
Claims (8)
1. a kind of device that zinc ferrite is prepared using zinc leaching residue, it is characterised in that described device includes：
Grinding attachment, the grinding attachment have charging aperture and discharging opening；
Batch mixer, the batch mixer have feeding mouth, filling opening and discharging opening；The feeding mouth of the batch mixer and the ore grinding
The discharging opening of equipment is connected；
Ball press, the ball press have feeding mouth and discharging opening, the pan feeding of the discharging opening of the batch mixer and the ball press
Mouth is connected；
Dryer, the discharging opening of the ball press are connected with dryer；
Rotary hearth furnace, the rotary hearth furnace are provided with charging aperture and discharging opening, preheating zone that the burner hearth of the rotary hearth furnace is set gradually, decompose
Area, main reaction region and discharge zone, the dryer are connected with the charging aperture of the rotary hearth furnace, the charging aperture position of the rotary hearth furnace
In the preheating zone, the discharging opening of the rotary hearth furnace is located at the discharge zone；
Granulating unit, the charging aperture and discharging opening, the charging aperture of the granulating unit are connected with the discharging opening of the rotary hearth furnace；
Pelletizing for will be generated in the rotary hearth furnace carries out water quenching cooling；
Once grind screening device, the once mill screening device is connected with the discharging opening of the granulating unit, for by the ball after water quenching
Group carries out mill ore magnetic selection；
Leaching device, the leaching device are provided with charging aperture and discharging opening, and the charging aperture of the leaching chooses to install with the once mill
The discharging opening put is connected；
Secondary grinding screening device, the secondary grinding screening device are provided with charging aperture and discharging opening, the charging aperture of the secondary grinding screening device
It is connected with the discharging opening of the leaching device.
2. device according to claim 1, it is characterised in that the preheating zone passes through preheating zone partition wall with the resolver
Separate, the resolver is separated with the main reaction region by resolver partition wall；The main reaction region and the discharge zone pass through
Main reaction region partition wall separates.
3. device according to claim 1, it is characterised in that the resolver is provided with heat-accumulating burner.
4. device according to claim 1, it is characterised in that be provided with agitating device in the leaching device.
5. device according to claim 1, it is characterised in that the dryer has rotatable roller.
6. device according to claim 5, it is characterised in that the rotatable roller by driving belt driveably with
Motor is connected.
7. device according to claim 1, it is characterised in that the discharge zone sets drawing mechanism.
8. device according to claim 7, it is characterised in that the drawing mechanism is spiral discharge device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720779355.4U CN207129972U (en) | 2017-06-30 | 2017-06-30 | A kind of device that zinc ferrite is prepared using zinc leaching residue |
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| CN201720779355.4U CN207129972U (en) | 2017-06-30 | 2017-06-30 | A kind of device that zinc ferrite is prepared using zinc leaching residue |
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| CN207129972U true CN207129972U (en) | 2018-03-23 |
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| CN201720779355.4U Expired - Fee Related CN207129972U (en) | 2017-06-30 | 2017-06-30 | A kind of device that zinc ferrite is prepared using zinc leaching residue |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140691A (en) * | 2017-06-30 | 2017-09-08 | 江苏省冶金设计院有限公司 | A kind of utilization zinc leaching residue prepares the method and device of zinc ferrite |
-
2017
- 2017-06-30 CN CN201720779355.4U patent/CN207129972U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140691A (en) * | 2017-06-30 | 2017-09-08 | 江苏省冶金设计院有限公司 | A kind of utilization zinc leaching residue prepares the method and device of zinc ferrite |
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