CN106115778B - The recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag - Google Patents
The recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag Download PDFInfo
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- CN106115778B CN106115778B CN201610494517.XA CN201610494517A CN106115778B CN 106115778 B CN106115778 B CN 106115778B CN 201610494517 A CN201610494517 A CN 201610494517A CN 106115778 B CN106115778 B CN 106115778B
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- slag
- sulfuric acid
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- titanium pigment
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 239000002893 slag Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 58
- 239000001038 titanium pigment Substances 0.000 title claims abstract description 16
- 238000005360 mashing Methods 0.000 claims abstract description 20
- 239000012141 concentrate Substances 0.000 claims abstract description 18
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000010936 titanium Substances 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 21
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 229910052719 titanium Inorganic materials 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 7
- 239000012065 filter cake Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 3
- 229910000349 titanium oxysulfate Inorganic materials 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000008187 granular material Substances 0.000 abstract description 7
- 239000004408 titanium dioxide Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 11
- 235000010215 titanium dioxide Nutrition 0.000 description 9
- 239000002253 acid Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 239000012535 impurity Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000001238 wet grinding Methods 0.000 description 5
- 238000005755 formation reaction Methods 0.000 description 4
- 206010018910 Haemolysis Diseases 0.000 description 3
- 230000008588 hemolysis Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 238000007885 magnetic separation Methods 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 235000010755 mineral Nutrition 0.000 description 3
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000010450 olivine Substances 0.000 description 2
- 229910052609 olivine Inorganic materials 0.000 description 2
- 239000011028 pyrite Substances 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 229910052611 pyroxene Inorganic materials 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910001051 Magnalium Inorganic materials 0.000 description 1
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 description 1
- VAEJJMYYTOYMLE-UHFFFAOYSA-N [O].OS(O)(=O)=O Chemical compound [O].OS(O)(=O)=O VAEJJMYYTOYMLE-UHFFFAOYSA-N 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- JCDAAXRCMMPNBO-UHFFFAOYSA-N iron(3+);oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Ti+4].[Fe+3].[Fe+3] JCDAAXRCMMPNBO-UHFFFAOYSA-N 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- -1 magnesium aluminate Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
Landscapes
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The present invention relates to a kind of sulfate process titanium dioxide powder craft, a kind of recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag is specifically disclosed.Its step is：A, by acidolysis slag by selected raising Ti content, obtain the selected slag of acidolysis；B, that the selected slag of acidolysis is added into wet ball mill is levigate；C, levigate acidolysis slag press filtration dried up；D, addition sulfuric acid carry out acidolysis with being pumped into acidolysis pot together with acidolysis ilmenite concentrate premix after filter press cake mixing mashing.The advantage of the invention is that：1) acidolysis rate of acidolysis slag is improved；2) coarse granule miberal powder vicious circle because of acidolysis effect difference in the selected slag of acidolysis is avoided, causes production efficiency to decline；3) abundant Resource recovery, reduces debris dump high-volume.
Description
Technical field
The present invention relates to a kind of sulfuric acid method titanium pigment production technology, especially a kind of processing of sulfuric acid method titanium pigment acidolysis slag
Method.
Background technology
The primary raw material of sulfuric acid method titanium pigment production technology is ilmenite concentrate, and its composition is iron titanate, active ingredient titanium dioxide
Titanium is containing general 45%~55%.After outsourcing ilmenite concentrate is crushed through Raymond mill or ball mill, amount of calculation is pressed in acidolysis pot
Mixed with the concentrated sulfuric acid, add water dilution, using the dilution thermal initiation acidolysis reaction of the concentrated sulfuric acid, generate loose porous solid formation
Matter, turns into acidolysis titanium liquid, the main component of titanium liquid is sulfuric acid oxygen after the processes such as overcuring, the leaching that adds water, addition iron powder reducing
The aqueous solution of titanium, ferrous sulfate and dilute sulfuric acid, it is brilliant in addition with a small amount of non-acidolysis ilmenite concentrate, shale mineral, pyroxene, magnalium point
Stone, hornblend, chlorite, olivine, quartz, magnetic iron ore and pyrite etc., the compositions of these solid formations with ilmenite concentrate thing
Matter composition changes and changed.In order to which the cleaning titanyl sulfate solution for meeting titanium white production technological requirement is made, it is necessary in the case where connecing
In the process come these solid phase impurity are removed by settling.In sedimentation process, cationic flocculant is added into acidolysis titanium liquid
The colloidal substance formed in these responseless solia particles and acidolysis is caught, the clear titanium liquid on settling tank top is sent to follow-up work
The part of a large amount of solid phase impurity is contained by Filter Press in section, lower floor, and filtrate is sent to follow-up workshop section, and filter cake is generally as discarded
Thing is stacked, because this filter cake is commonly referred to as acidolysis slag in responseless material composition in acid hemolysis process, industry.
Typically contain in this acidolysis slag 25% or so moisture, 3% or so soluble titanium dioxide, 8% or so
Sulfuric acid, in terms of titanium dioxide 14% or so ilmenite concentrate, remaining is shale mineral, pyroxene, magnesium aluminate spinel, hornblend, green mud
Stone, olivine, quartz, magnetic iron ore and pyrite etc., because titaniferous amount is low, complicated component, it is impossible to directly return to acidolysis workshop section
Utilize, stacked generally as solid waste.With the expansion of domestic titanium white production business production capacity, ilmenite concentrate resource is more and more precious
It is expensive, arbitrarily stack not only waste of resource and be also easy to cause environmental pollution.Company where inventor often produces one ton of titanium dioxide and produced
Raw 500 kilograms of acidolysis slags, are calculated, 1 year acidolysis slag is up to 100,000 tons, the environmental pressure and heap faced by 200,000 tons of titanium dioxides are produced per year
Field expropriation of land pressure is huge.
If reclaiming ilmenite concentrate therein and soluble titanium liquid by working process, titanium dioxide 10,000 can be reclaimed within 1 year
More than 7000 tons, economic benefit and social benefit are notable.Therefore existing part producer gradually starts to pay attention to the recycling of acidolysis slag,
Patent such as publication number CN101469367A uses the method for water roughing and magnetic separation to reclaim titanium dioxide acid hydrolysis residue；Publication number
CN101161353A patent document reports a kind of method that sulfate process titanium dioxide acidolysis waste material obtains ilmenite concentrate by flotation；It is open
Number the compositions of different densities in a kind of utilization hydrocyclone separation acidolysis slag is disclosed for CN102602990A patent, so as to return
The method for receiving acidolysis slag.The characteristics of these methods have one jointly, it is all will be useless in acidolysis slag using various means
Impurity component is separated, and finally obtains the slag of Ti content enrichment, we term it the selected slag of acidolysis, with the acidolysis essence that will be obtained
Select slag to be sent to hydrolysis procedure and acidolysis pot participation acidolysis reaction is sent into together with triggering water.
By experiment it was found that the selected slag of obtained acidolysis directly is added into acidolysis in acidolysis pot, acidolysis rate is reachable
95% or so, but titaniferous composition therein still without being utilized well, because the acidolysis obtained using above method is selected
Often contain more coarse granule miberal powder in slag, this coarse granule miberal powder is difficult to participate in acidolysis reaction, can be deposited on the contrary in system
Vicious circle, cumulative reduction acidolysis rate and production efficiency.Although being used in Publication No. CN101469367A patent
The method that acidolysis slag is first smashed to carry out adding water again roughing and magnetic separation prepares the selected slag of acidolysis, but is due to the composition of acidolysis slag
Complexity, ilmenite concentrate content is only 14% or so, and remaining material hardness is uneven, and shale mineral are easy to wrap the formation of ilmenite concentrate particle
Cover, also can not be so that the selected slag of the acidolysis finally obtained can cause technique on the contrary with thinner fineness even if crush
It is cumbersome numerous and jumbled.Therefore in this scenario, to the process smashed also just for the sake of facilitating roughing and magnetic separation of acidolysis slag.In addition
It was also found that because the selected slag of the acidolysis generally yielded has larger viscosity, with the progress of acidolysis reaction, the acid of generation
Solution product gradually can wrap the selected cinder ladle of the acidolysis of non-acidolysis, cause middle unreacted material to be difficult to acidolysis, acidolysis
Therefore rate is affected.
A kind of recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag mentioned by the present invention, is not shown in also at home at present
To the open report of correlation.
The content of the invention
Further to improve the utilization rate to acidolysis slag, the acidolysis rate of the gained selected slag of acidolysis is improved, the invention provides
A kind of recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag.
The technical solution adopted in the present invention is：The recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag, including following step
Suddenly：
A, by acidolysis slag by selected raising Ti content, obtain the selected slag of acidolysis；
B, that the selected slag of acidolysis is added into wet ball mill is levigate；
C, levigate acidolysis slag press filtration dried up, obtain filter press cake；
D, addition sulfuric acid carry out acidolysis with being pumped into acidolysis pot together with acidolysis ilmenite concentrate premix after filter press cake mixing mashing.
The selected slag addition wet ball mill of acidolysis of the present invention as obtained by will be selected is levigate, and coarse granule miberal powder therein is converted
For fine grained miberal powder, it is to avoid coarse granule miberal powder is difficult to participate in acidolysis reaction, is deposited on vicious circle in system.It will obtain simultaneously
Filter press cake is beaten after being mixed with sulfuric acid, it is therefore an objective to make the selected slurry material of acidolysis is fully dispersed to open, it is to avoid follow-up acidolysis reaction
The acid hydrolysate of middle generation wraps unreacted material, hinders the problem of acidolysis reaction proceeds, acidolysis is improved with this
The acidolysis rate of selected slag, the purpose for mixing mashing using sulfuric acid is the premix for realizing sulfuric acid and slurry, is easy to follow-up acidolysis anti-
The progress answered, can be made used in the sulfuric acid concentration and acidolysis reaction in slurry by adjusting the sulfuric acid concentration used in mashing in addition
Sulfuric acid concentration is matched, it is to avoid be beaten using water cause to the sour ore deposit of acid hemolysis process than influence.
As a further improvement on the present invention, the concrete technology of the step A is：
(1) the acidolysis slag that press filtration workshop section produces is transported in hollander tub and mashing is mixed with water, form solid formation content 10
~50% suspension slurry, feeding dashpot is standby；
(2) composition of different densities is separated using hydrocyclone, the material come out from hydrocyclone sand mouth is acidolysis essence
Select slag；Contain substantial amounts of titanyl sulfate in filtrate, collect Hou Songzhu acidolysis workshop section and do leaching water, to reclaim titanium resource.
The program uses hydraulic cyclone technology, reclaims ilmenite concentrate using different components density variation, in removal process not
Introduce new impurity, it is to avoid new pollution, while reclaiming ilmenite concentrate also reclaim soluble titanium.The mesh being beaten in the program
Be to form uniform suspended nitride, in order to be separated with hydrocyclone to it.
As a further improvement on the present invention, the miberal powder particle diameter after levigate of the selected slag of acidolysis described in step B is less than 45 μm
Particle in total particle proportion between 85~90%.It is demonstrated experimentally that being less than 45 μm in the selected slag particle footpath of acidolysis
Particle is when proportion reaches more than 90% in total particle, as ball milling is polished the increase of time, the further reduction of fineness
Not substantially, and this ratio below 85% when, also remain in the selected slag of acidolysis and more be difficult to participate in the thick of acidolysis reaction
Particle miberal powder.
As a further improvement on the present invention, the liquid-solid ratio of sulfuric acid and filter press cake is 1.5 in step D:1~2.5:1, to protect
Card mashing disposed slurry can scatter well.
As a further improvement on the present invention, after mashing terminates in step D, the mass concentration of sulfuric acid is 53~57%.Mesh
Be to ensure that sulfuric acid concentration and the sulfuric acid concentration of acidolysis reaction in mashing disposed slurry match, to maintain the sour ore deposit of acid hemolysis process
Than preventing exothermic heat of reaction not enough or thermal discharge being excessive more than suitable temperature range, reduce acidolysis rate.
As a further improvement on the present invention, the selected slag TiO of acidolysis described in step A2Mass fraction is more than 40%, always
Weight of iron fraction is more than 25%, and the particle proportion that particle diameter is less than 45 μm is less than 50%.
As a further improvement on the present invention, time of filter pressing is 0.5~2h in step C, and moisture content is small in filter cake
In 20%.
As a further improvement on the present invention, after the mashing in step D slurry and the ratio of acidolysis ilmenite concentrate premix
For butt mass ratio 1:30~2:30.
The beneficial effects of the invention are as follows：1) acidolysis rate of acidolysis slag is improved；2) coarse granule miberal powder in the selected slag of acidolysis is avoided
The vicious circle because of acidolysis effect difference, causes production efficiency to decline；3) hydraulic cyclone technology is used, is not introduced in removal process
New impurity, it is to avoid new pollution, soluble titanium has also been reclaimed while reclaiming ilmenite concentrate；4) abundant Resource recovery, is reduced
Debris dump is high-volume.
Embodiment
With reference to embodiment, the present invention is further described.
Embodiment 1
The present embodiment is used for illustrating the selected slag wet-milling Application way of sulfuric acid process acidolysis of the present invention.
The selected slag of acidolysis (it is 50% that particle diameter, which is more than 45 μm of proportions) is extremely less than shared by 45 μm by the way that wet ball mill is levigate
Ratio is 85%, and press filtration filter cake then is used into 1.5:1 liquid-solid ratio mixes sulfuric acid concentration 55% after mashing, mashing with sulfuric acid,
Then acidolysis pot acidolysis is pumped into together with acidolysis premix.
Embodiment 2
The present embodiment is used for illustrating the selected slag wet-milling Application way of sulfuric acid process acidolysis of the present invention.
The selected slag of acidolysis (it is 55% that particle diameter, which is more than 45 μm of proportions) is extremely less than shared by 45 μm by the way that wet ball mill is levigate
Ratio is 90%, and press filtration filter cake then is used into 2.5:1 liquid-solid ratio mixes sulfuric acid concentration 57% after mashing, mashing with sulfuric acid,
Then acidolysis pot acidolysis is pumped into together with acidolysis premix.
Embodiment 3
The present embodiment is used for illustrating the selected slag wet-milling Application way of sulfuric acid process acidolysis of the present invention.
The selected slag of acidolysis (it is 55% that particle diameter, which is more than 45 μm of proportions) is extremely less than shared by 45 μm by the way that wet ball mill is levigate
Ratio is 90%, and press filtration filter cake then is used into 1.5:1 liquid-solid ratio mixes sulfuric acid concentration 53% after mashing, mashing with sulfuric acid,
Then acidolysis pot acidolysis is pumped into together with acidolysis premix.
Comparative example 1
This comparative example is used for contrasting the selected slag wet-milling Application way of sulfuric acid process acidolysis of the present invention.
The selected slag of acidolysis (it is 55% that particle diameter, which is more than 45 μm of proportions) is pumped into acidolysis pot acid together with acidolysis premix
Solution.
Comparative example 2
This comparative example is used for contrasting the selected slag wet-milling Application way of sulfuric acid process acidolysis of the present invention.
The selected slag of acidolysis (it is 50% that particle diameter, which is more than 45 μm of proportions) is pumped into acidolysis pot acid together with acidolysis premix
Solution.
| Numbering | Acidolysis rate % |
| Embodiment 1 | 97.88 |
| Embodiment 2 | 97.62 |
| Embodiment 3 | 97.77 |
| Comparative example 1 | 95.12 |
| Comparative example 2 | 94.87 |
It is using the method for the present invention, the selected slag wet ball mill of acidolysis is levigate to being less than it can be seen from embodiment and comparative example
45 μm of proportions are between 85~90%, then press filtration, then with liquid-solid ratio 1.5~2.5:1 is beaten, it is ensured that after mashing
Sulfuric acid concentration 53~57%, the method for being pumped into acidolysis pot acidolysis together with premix afterwards.Acidolysis rate ratio is without above-mentioned steps
And be pumped directly into acidolysis pot acidolysis and improve a lot.By the inventive method, the acidolysis rate of acidolysis slag had both been improved, again can be with
Avoid the coarse granule miberal powder vicious circle of the difference of acidolysis effect in the selected slag of acidolysis, while simple to operate, equipment investment is few, with compared with
Big economic benefit.
Claims (7)
1. the recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag, comprises the following steps：
A, by acidolysis slag by selected raising Ti content, obtain the selected slag of acidolysis；
It is characterized in that：Also include step B, step C and step D, be specially：
B, that the selected slag of acidolysis is added into wet ball mill is levigate so that the selected slag of acidolysis miberal powder particle diameter after levigate is less than 45 μm of particle
Proportion is between 85~90% in total particle；
C, levigate acidolysis slag press filtration dried up, obtain filter press cake；
D, addition sulfuric acid carry out acidolysis with being pumped into acidolysis pot together with acidolysis ilmenite concentrate premix after filter press cake mixing mashing.
2. the recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag according to claim 1, it is characterised in that：The step
A concrete technology is：
（1）The acidolysis slag that press filtration workshop section is produced is transported in hollander tub and mashing is mixed with water, and formation solid formation content 10~
50% suspension slurry, feeding dashpot is standby；
（2）The composition of different densities is separated using hydrocyclone, the material come out from hydrocyclone sand mouth is the selected slag of acidolysis；
Contain substantial amounts of titanyl sulfate in filtrate, collect Hou Songzhu acidolysis workshop section and do leaching water, to reclaim titanium resource.
3. the recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag according to claim 1, it is characterised in that：In step D
The liquid-solid ratio of sulfuric acid and filter press cake is 1.5:1~2.5:1.
4. the recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag according to claim 1, it is characterised in that：In step D
After mashing terminates, the mass concentration of sulfuric acid is 53~57%.
5. the recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag according to claim 1, it is characterised in that：In step A
The selected slag TiO of described acidolysis2Mass fraction is more than 40%, and total weight of iron fraction is more than 25%, and particle diameter is less than 45 μm of particle institute
Accounting example is less than 50%.
6. the recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag according to claim 1, it is characterised in that：In step C
Time of filter pressing is 0.5~2h, and moisture content is less than 20% in filter cake.
7. the recoverying and utilizing method of sulfuric acid method titanium pigment acidolysis slag according to claim 1, it is characterised in that：In step D
Mashing after slurry and acidolysis ilmenite concentrate premix ratio be butt mass ratio 1:30~2:30.
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| CN106745232B (en) * | 2017-02-24 | 2018-09-11 | 四川龙蟒钛业股份有限公司 | A kind of recoverying and utilizing method of hydrolysis dirt |
| CN107413521A (en) * | 2017-04-25 | 2017-12-01 | 潜江方圆钛白有限公司 | The industrial method of magnetic separation ilmenite concentrate in acidolysis tailings is produced from sulfuric acid method titanium pigment |
| CN108726563A (en) * | 2018-06-08 | 2018-11-02 | 龙蟒佰利联集团股份有限公司 | A kind of method that acidolysis tailing recycles in production process of titanium pigment |
| CN111495517A (en) * | 2020-04-22 | 2020-08-07 | 龙佰四川钛业有限公司 | Hydrolysis scale depolymerization method |
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| CN101265521A (en) * | 2008-04-10 | 2008-09-17 | 梅卫东 | Method for preparing acid-soluble titanium slag by Panzhihua titanium concentrate |
| CN102602990B (en) * | 2012-03-31 | 2014-01-08 | 四川龙蟒钛业股份有限公司 | Recycling method for producing acidolysis slag in titanium dioxide with sulfuric acid method |
| CN102875511B (en) * | 2012-09-04 | 2014-10-01 | 陕西嘉禾植物化工有限责任公司 | Method for comprehensively extracting dye lignin and kaempferol from sophora fruit |
| CN103342376B (en) * | 2013-07-11 | 2015-07-01 | 中北大学 | Process for extracting valuable metal from coal gangues |
| CN103695631B (en) * | 2013-12-19 | 2016-03-02 | 北京科技大学 | A kind of beneficiation enrichment technique of ferrotianium oxidized ore |
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| CN103898330B (en) * | 2014-03-28 | 2016-04-20 | 中国铝业股份有限公司 | The method of the valuable metal such as comprehensive recovery of iron, aluminium, scandium, titanium, vanadium from red mud |
| CN103979592B (en) * | 2014-04-16 | 2016-02-10 | 广西冶金研究院 | A kind of method reclaiming aluminium from alumina producing waste red mud |
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| CN105439195B (en) * | 2015-05-18 | 2017-03-08 | 华东理工大学 | The efficient recycling method of titanium resource and device in a kind of sulfate process titanium dioxide technique acidolysis slag |
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Address after: 618200 Deyang city of Sichuan province Mianzhu new industrial zone longmang Chemical Industrial Zone Patentee after: Longbai Sichuan Titanium Co., Ltd Address before: 618200 Deyang city of Sichuan province Mianzhu new industrial zone longmang Chemical Industrial Zone Patentee before: SICHUAN LOMON TITANIUM Co.,Ltd. |
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