CN109133163A - A kind of novel sulfuric acid method titanium pigment washing process and system - Google Patents
A kind of novel sulfuric acid method titanium pigment washing process and system Download PDFInfo
- Publication number
- CN109133163A CN109133163A CN201811253442.1A CN201811253442A CN109133163A CN 109133163 A CN109133163 A CN 109133163A CN 201811253442 A CN201811253442 A CN 201811253442A CN 109133163 A CN109133163 A CN 109133163A
- Authority
- CN
- China
- Prior art keywords
- washing
- phase
- slurry
- split
- membrane module
- 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
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
- C01G23/0532—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing sulfate-containing salts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Abstract
The invention discloses a kind of novel sulfuric acid method titanium pigment washing process and systems, wherein the technique includes: hydrolyzation material split-phase, and hydrolyzation material is carried out phase separating treatment, obtains metatitanic acid slurry and liquid phase cleaning spent acid；The washing of slurry film, the metatitanic acid slurry is washed, and removes the impurity iron ion in metatitanic acid slurry；Wash water processing, is handled be discharged after washing that the slurry film washs, interception impurity iron ion；The hydrolyzation material split-phase, slurry film washing and wash water processing carry out under closed environment.A kind of novel sulfuric acid method titanium pigment washing process provided by the invention and system eliminate the bleaching reduction process of traditional handicraft, realize that washing process is once completed, efficient, energy conservation and environmental protection more succinct than conventional process flow；Impurity iron content is lower in handicraft product discharging, without medicaments such as addition bleaching agent, sulfuric acid, while realizing recycling for wash water, reduces production cost, reduce three wastes discharge amount.
Description
Technical field
The present invention relates to sulfuric acid method titanium pigment production technical fields, and in particular to a kind of novel sulfuric acid method titanium pigment washing work
Skill and system.
Background technique
There are two types of titanium dioxide manufacturing methods: sulfuric acid process and chloridising.The titanium dioxide factory of China is based on sulfuric acid process.Sulfuric acid
Method is that titanium-iron powder and the concentrated sulfuric acid are carried out to acidolysis reaction production titanyl sulfate, generates metatitanic acid through hydrolysis, then calcined, crushed i.e.
Obtain titanium dioxide product.This method can produce anatase titanium dioxide and rutile type titanium white.Sulfuric acid process can with the low ilmenite being easy to get of valence with
Sulfuric acid is raw material, and technology is more mature, and equipment is simple, and anticorrosion material easily solves.
In traditional sulfuric acid method titanium pigment washing production process, washing process be divided into wash, bleach, two wash three phases,
Two wash waters are applied to one and wash, a wash water direct emission, and washing water is big, and washing flow is long, and washing effect is poor, and reagent consumption is big.
Meanwhile in order to eliminate the influence of ferric ion in metatitanic acid slurry, metatitanic acid is filtered after traditional production technology needs to wash
The concentrated sulfuric acid and reducing agent is added after cake mashing, after the ferric ion formed in water-washing process is reduced to ferrous iron, then carries out
Second wash removes it.Entire process flow is long, cumbersome.
Summary of the invention
The object of the present invention is to provide a kind of novel sulfuric acid method titanium pigment washing process, can simplify sulfuric acid method titanium pigment
Process, it is easy to operate.
It is a further object to provide a kind of novel sulfuric acid method titanium pigment water wash systems.
Technical solution provided by the invention is as follows:
A kind of novel sulfuric acid method titanium pigment washing process comprising:
Hydrolyzation material is carried out phase separating treatment, obtains metatitanic acid slurry and liquid phase cleaning spent acid by hydrolyzation material split-phase；
The washing of slurry film, the metatitanic acid slurry is washed, and removes the impurity iron ion in metatitanic acid slurry；
Wash water processing, is handled be discharged after washing that the slurry film washs, interception impurity iron ion；
The hydrolyzation material split-phase, slurry film washing and wash water processing carry out under closed environment.Further
Ground, the hydrolyzation material split-phase the step of in, phase separating treatment is carried out to hydrolyzation material by split-phase membrane module.
Further, in the slurry film washing step, continuum micromeehanics continuous effluent is carried out to the metatitanic acid slurry
The washing of formula；Moisturizing is continued by sink before washing, meanwhile, continuous effluent is to washing rear sink during slurry washing；
Further, in the slurry film washing step, the metatitanic acid slurry is washed by washing membrane module
It washs.
Further, the split-phase membrane module and the washing membrane module include but is not limited to tubular type Crossed-slot antenna
Film, and the precision of the tubular type Crossed-slot antenna film is 50-1000nm, heatproof is >=50 DEG C.
Further, flow velocity of the slurry in membrane module is 2~8m/s, and liquid phase is made in 0.1~0.5MPa pressure difference in slurry
Film is penetrated with lower, solid phase is intercepted at slurry side, and film output clear liquid turbidity is less than 1NTU.
Further, the metatitanic acid slurry concentration that the hydrolyzation material split-phase step obtains is 300~500g/L；
Further, the slurry concentration for the qualified material of washing that the slurry film washing step obtains is 150~350g/L,
Middle simple substance iron content is 10ppm or less.
Further, in the step of wash water is handled, it will be discharged and be carried out after the washing by wash water processing component
Processing；The wash water processing component includes but is not limited to nanofiltration membrane and reverse osmosis membrane.
In the step of wash water is handled, preceding sink is washed described in clear liquid return that treated, realizes the circulation benefit of wash water
With.
Further, in the slurry film washing step, the water source for washing includes supplement fresh water, and the supplement
Fresh water be deoxidation desalted water, 20-50 DEG C of water temperature.
Further, between the hydrolyzation material split-phase and slurry film washing further include:
The metatitanic acid pulp dilution that the hydrolyzation material split-phase obtains is beaten to preset concentration, beats by metatitanic acid slurry slurrying
Starching obtained slurry concentration is 150~350g/L；It is beaten the clear liquid that water used uses the slurry film washing process output.
The present invention also provides a kind of novel sulfuric acid process titanium white production systems comprising:
Hydrolyze phase splitting unit comprising for carrying out the split-phase membrane module of phase separating treatment to hydrolyzation material, obtain metatitanic acid
Slurry and liquid phase cleaning spent acid；
Slurry film washing unit comprising the washing membrane module for being washed to the metatitanic acid slurry；
Wash water processing unit comprising water outlet is handled after the washing for obtaining to the slurry film washing unit
Wash water processing component；
The hydrolysis phase splitting unit, the slurry film washing unit, the wash water processing unit are closed structure.
Further, the hydrolysis phase splitting unit includes hydrolyzation material split-phase slot, split-phase circulating pump, split-phase membrane module, described
Size circulations are established by the split-phase circulating pump between hydrolyzation material split-phase slot and the split-phase membrane module；The hydrolyzation material split-phase
The outlet of slot is connected to the entrance of the split-phase circulating pump, and the outlet of the split-phase circulating pump is connected to the split-phase membrane module,
The slurry side of the split-phase membrane module is connected to the hydrolyzation material split-phase slot；
The slurry film washing unit include elution slot, qualified hopper, elution cycles pump, qualified material transfering material pump, elute into
Water pump, washing membrane module, it is described elution slot entrance and the hydrolyzation material split-phase slot another outlet, the elution slot with
Size circulations are established by elution cycles pump between the washing membrane module；The outlet of the elution slot is followed with the elution
The outlet of the entrance connection of ring pump, the elution cycles pump is connected to the washing membrane module, the slurry of the washing membrane module
Side is connected to the elution slot.The outlet of the entrance of the qualification hopper and the elution slot, the qualification hopper go out
Mouth is connected to the qualified material transfering material pump.The outlet of the elution intake pump is connected to the entrance of the elution slot, the elution
The import of intake pump and the outlet for washing preceding sink；
The wash water processing unit includes wash water processing intake pump, wash water processing component, washes preceding sink, washes rear sink, institute
The entrance for stating wash water processing intake pump washes rear sink outlet with described, and the outlet of the wash water processing intake pump is washed with described
Water treatment component connection；The entrance for washing preceding sink is connected to the clear liquid side of the wash water processing component；
Further, the novel sulfuric acid process titanium white production system further include:
Slurry slurrying unit comprising hollander tub and attached agitating device；The entrance of the hollander tub and the hydrolyzation material
The outlet of split-phase slot, the outlet of the hollander tub are connected to the elution slot；The attached agitating device is set to described
Inside hollander tub；It is described to wash exporting while being also connected to the entrance of the hollander tub for rear sink.
The hydrolyzation material split-phase slot, hollander tub, elution slot, qualified hopper, wash preceding sink, wash rear sink, split-phase membrane module,
Wash membrane module, wash water processing component is closed structure.
Further, the entrance for washing preceding sink is also connected to the external deoxidation desalination mouth of a river.
Further, the split-phase membrane module and washing membrane module include but is not limited to tubular type Crossed-slot antenna film；
Further, the wash water processing component includes but is not limited to nanofiltration membrane and reverse osmosis membrane；
Further, the hydrolyzation material split-phase slot and the elution slot become one；
Further, the spent acid side of the split-phase membrane module is connect with Waste acid treating device.
A kind of novel sulfuric acid method titanium pigment washing process provided by the invention and system, can bring following at least one to have
Beneficial effect:
1, the present invention is prevented ferrous oxidising for trivalent in metatitanic acid slurry using the production method of totally-enclosed isolation air
Iron；More preferably, it is also beaten and is washed using deoxidation desalted water, can also further prevent the oxidation of iron ion, so as to
To save the bleaching reduction process of traditional handicraft, realize that washing process is once completed, more succinct than conventional process flow, efficient,
Energy conservation and environmental protection.
2, impurity iron content is lower in the product discharge of present invention process, without addition bleaching agent, the medicaments such as sulfuric acid again into
Process is saved in row processing, more environmentally friendly.
3, continuous operation, the degree of automation may be implemented in this efficient membrane module of tubular type Crossed-slot antenna film of the invention
Height avoids the drawback that the equipment such as tubular filter, leaf-type vacuum filter, diaphragm filter press are inefficient, energy consumption is high, land occupation is big.
4, the present invention uses efficient membrane module, and no powder wears the risk of filter, and spent acid, can be straight without carrying out powder recovery processing
Introducing Waste acid treating device is connect, processing cost is saved
5, the present invention for the first time applies nanometer filtering film water processing technique in titanium dioxide washing recycling, and it is high, dense to produce the water rate of recovery
Water discharge amount is few, by the injection water of wash water treated clear liquid is used for film washing process, realizes recycling for washing water, pole
The earth reduces the dosage and efflux wastewater amount of fresh deoxygenated water, reduces cost of sewage disposal.
6, section Example of the invention may be omitted with metatitanic acid slurry pulping stage, the metatitanic acid that hydrolysis split-phase obtains
Slurry concentration has met the requirements, and can directly be washed.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to above-mentioned characteristic, the skill of the application
Art feature, advantage and its implementation are further described.
Fig. 1 is a kind of novel schematic diagram of embodiment of sulfuric acid method titanium pigment washing process of the present invention；
Fig. 2 is the schematic diagram of the novel sulfuric acid method titanium pigment washing process another kind embodiment of the present invention；
Fig. 3 is a kind of novel schematic diagram of embodiment of sulfuric acid method titanium pigment water wash system of the present invention；
Fig. 4 is the schematic diagram of the novel sulfuric acid method titanium pigment water wash system another kind embodiment of the present invention.
Appended drawing reference:
101- hydrolyzation material split-phase slot；102- hollander tub；103- elutes slot；104- qualification hopper；105- washes preceding sink；106-
Wash rear sink；201- split-phase circulating pump；202- elution cycles pump；203- qualification material transfering material pump；204- elutes intake pump；205- is washed
Water process intake pump；301- split-phase membrane module；302- washs membrane module；303- wash water processing component.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, their not generations
Its practical structures as product of table.
In the embodiment one of the novel sulfuric acid method titanium pigment washing process of the present invention, production technology includes the following steps:
Hydrolyzation material is carried out phase separating treatment, obtains metatitanic acid slurry and liquid phase cleaning spent acid by hydrolyzation material split-phase；
The washing of slurry film, metatitanic acid slurry is washed, and removes the impurity iron ion in metatitanic acid slurry；
Wash water processing, is handled be discharged after washing that slurry film washs, interception impurity iron ion；
Hydrolyzation material split-phase, the washing of slurry film and wash water processing carry out under closed environment.
In example 1, hydrolyzation material is the metatitanic acid obtained after hydrolyzing, which is mutually separated, to obtain partially
Metatitanic acid slurry, while obtaining liquid phase cleaning spent acid.Metatitanic acid slurry is washed, to remove impurity iron ion.Further,
It is discharged and handles after the washing obtained to washing, to intercept impurity iron ion, meet the requirement that wash water recycles.Hydrolyzation material
Split-phase, the washing of slurry film and wash water processing carry out under the closed environment of totally-enclosed isolation air, and inclined titanium can be effectively prevented
Ferrous oxidising in wintercherry material is ferric iron, so as to save the bleaching reduction process of traditional handicraft, realizes washing process
It is primary to complete, efficient, energy conservation and environmental protection more succinct than conventional process flow.
In the embodiment two of the novel sulfuric acid method titanium pigment washing process of the present invention, on the basis of previous embodiment one into
Row refinement.In the hydrolyzation material split-phase the step of, phase separating treatment is carried out to hydrolyzation material by split-phase membrane module.It is washed in slurry film
In step, the washing of continuous effluent formula is carried out to metatitanic acid slurry by washing membrane module.Split-phase membrane module and washing membrane module
For the large scale equipments such as existing tubular filter, leaf-type vacuum filter, diaphragm filter press, this high performance membrane component filters
Precision is high, and low energy consumption, occupies little space.Preferably, the core component of split-phase membrane module and washing membrane module is tubular type cross flow
Microfiltration membranes, and the precision of tubular type Crossed-slot antenna film is 50-1000nm, heatproof is >=50 DEG C.
To prevent membrane module from blocking, slurry flow velocity in membrane module is 2~8m/s, in slurry liquid phase 0.1~
Film is penetrated under 0.5MPa differential pressure action, and the control of flow velocity and pressure difference can be realized by circulating pump.Solid phase is intercepted at slurry side, should
Effective interception of metatitanic acid powder may be implemented in microfiltration membranes, and film output clear liquid turbidity is less than 1NTU.
The metatitanic acid slurry concentration that hydrolyzation material split-phase step obtains is 300~500g/L；Slurry film washing step obtains
The slurry concentration of the qualified material of washing is 150~350g/L, and wherein simple substance iron content is 10ppm or less.
In the present embodiment, it in the step of wash water is handled, water outlet will be handled after washing by wash water processing component；
Wash water processing component includes nanofiltration membrane and reverse osmosis membrane.The core element of wash water processing component is by nanofiltration membrane and reverse osmosis membrane group
At after processing, iron content can reach 2ppm or less in clear liquid.The present invention for the first time applies nanometer filtering film water processing technique in titanium white
In powder washing recycling, it is higher to produce water quality.Preferably, the step of clear liquid return that wash water is handled being used for the washing of slurry film
In, it is supplemented as main water source, so that the rate of recovery that wash water processing produces water is high, concentrated water drainage is few, realizes washing water
It recycles, significantly reduces the dosage and efflux wastewater amount of fresh deoxygenated water, reduce cost of sewage disposal.
The present embodiment realizes closed environment by the sealing of inert gas, sealed pressure 1-10KPa, can capitally every
Anoxybiotic gas prevents to ferrous oxidation.Further, in slurry film washing step, due to also needing to supplement a small amount of fresh water,
In view of on ferrous oxidation influence, supplement fresh water use deoxidation desalted water, 20-50 DEG C of water temperature.
The novel sulfuric acid method titanium pigment washing process of the present invention is described now in conjunction with Fig. 1.First to each slurry tank of system,
Be passed through inert gas in water pot, exclude air, and in each equipment drain sampling analysis, after oxygen content is qualified, system prepare into
Material.
(1) hydrolyzation material introduces, and carries out split-phase by efficient membrane module, obtains metatitanic acid slurry and spent acid.Spent acid is direct
Waste acid treating device is sent to be handled.
(2) metatitanic acid slurry is sent into slurry film washing unit.In slurry film washing process, sink continues to slurry from before washing
Expect the moisturizing of film washing process, washing process continuous effluent, and water outlet is collected to and washes rear sink.It washes preceding sink while having a small amount of de-
Oxygen desalted water is supplemented.Finally obtain the washing qualification material met the requirements.
(3) water for washing rear sink is conveyed to carry out wash water processing, and obtained clear liquid, which is sent back to, washes preceding sink recycling, wash water
The concentrated water discharge that processing unit obtains carries out wastewater treatment.
In the embodiment three of the novel sulfuric acid method titanium pigment washing process of the present invention, on the basis of previous embodiment two into
Row adjustment and optimization.Between the hydrolyzation material split-phase and slurry film washing further include:
The metatitanic acid pulp dilution that hydrolyzation material split-phase obtains is beaten to preset concentration by metatitanic acid slurry slurrying.The concentration
It can be 150~350g/L.And preferably, it is beaten the clear liquid that water used uses afore-mentioned slurry film washing process output, after washing
The clear liquid of sink leads to pulping process, reduces water consumption.
Referring to shown in Fig. 2, novel sulfuric acid method titanium pigment washing process the following steps are included:
Inert gas is passed through into each slurry tank of system (in addition to the pump housing), water pot first, excludes air, and in each equipment
Drain sampling analysis, after oxygen content is qualified, system prepares charging.
(1) hydrolyzation material introduces, and carries out split-phase by efficient membrane module, obtains metatitanic acid slurry and spent acid.Spent acid is direct
Waste acid treating device is sent to be handled.
(2) the metatitanic acid pulp dilution that split-phase obtains will be hydrolyzed to be beaten to preset concentration.Mashing is washed with water by slurry film
Rear sink of washing in the process provides.
(3) metatitanic acid slurry is sent into slurry film washing unit.In slurry film washing process, sink continues to slurry from before washing
Expect the moisturizing of film washing process, washing process continuous effluent, and water outlet is collected to and washes rear sink.It washes preceding sink while having a small amount of de-
Oxygen desalted water is supplemented.Finally obtain the washing qualification material met the requirements.
(4) water for washing rear sink is conveyed to carry out wash water processing, and obtained clear liquid, which is sent back to, washes preceding sink recycling, wash water
The concentrated water discharge that processing unit obtains carries out wastewater treatment.
The present invention also provides a kind of novel sulfuric acid method titanium pigment water wash systems.In the embodiment one of the production system,
Include:
Hydrolyze phase splitting unit comprising for carrying out the split-phase membrane module of phase separating treatment to hydrolyzation material, obtain metatitanic acid
Slurry and liquid phase cleaning spent acid；
Slurry film washing unit comprising the washing membrane module for being washed to metatitanic acid slurry；
Wash water processing unit comprising the wash water handled is discharged after the washing for obtaining to slurry film washing unit
Processing component；
Hydrolyzing phase splitting unit, slurry film washing unit, wash water processing unit is closed structure.
In the present embodiment, split-phase membrane module and washing membrane module be efficient membrane module, may be implemented continuous operation, from
Dynamicization degree is high, avoids the disadvantage that the equipment such as tubular filter, leaf-type vacuum filter, diaphragm filter press are inefficient, energy consumption is high, land occupation is big
End.In addition, closed structure can be realized by being passed through inert gas, effectively ferrous iron can be avoided to be oxidized to ferric iron.
In the embodiment two of production system, embodiment one above-mentioned is optimized.Specifically, phase splitting unit packet is hydrolyzed
Hydrolyzation material split-phase slot, split-phase circulating pump, split-phase membrane module are included, is recycled between hydrolyzation material split-phase slot and split-phase membrane module by split-phase
Pump establishes size circulations.Slurry film washing unit includes elution slot, elution cycles pump, washing membrane module, elute the entrance of slot with
The outlet of hydrolyzation material split-phase slot elutes and establishes size circulations by elution cycles pump between slot and washing membrane module.Wash water
Processing unit includes wash water processing intake pump, wash water processing component, and wash water handles the entrance of intake pump and giving up for washing membrane module
The outlet of liquid outlet, wash water processing intake pump is connected to wash water processing component.Hydrolyzation material split-phase slot, is washed split-phase membrane module
It is disengaged from the groove, washs membrane module, wash water processing component is closed structure.
Further, another outlet of hydrolyzation material split-phase slot is connected to the entrance of split-phase circulating pump, and split-phase circulating pump goes out
Mouth is connected to split-phase membrane module, and the slurry side of split-phase membrane module is connected to the entrance of hydrolyzation material split-phase slot；Elute slot outlet with
The entrance connection of elution cycles pump, the outlet of elution cycles pump are connected to membrane module is washed, wash the slurry side of membrane module and wash
The entrance connection being disengaged from the groove.
Further, slurry film washing unit further includes qualified hopper, qualified material transfering material pump；The entrance of qualified hopper with wash
The outlet of the outlet being disengaged from the groove, qualified hopper is connected to qualification material transfering material pump.Qualified hopper passes through for storing qualified material
Qualification material transfering material pump sends out qualification material.
Further, slurry film washing unit further includes elution intake pump；Wash water processing unit further include wash before sink and
Wash rear sink；The entrance of sink is connected to the clear liquid side of wash water processing component before washing, the outlet of sink and elution intake pump before washing
Entrance connection, elute intake pump outlet with elute slot entrance be connected to；Wash the entrance of rear sink and giving up for washing membrane module
The connection of liquid side, the outlet for washing rear sink are connected to wash water processing intake pump.Preceding sink is washed into the clear liquid introducing of wash water processing component
It is recycled, has greatly saved water consumption.
Since a small amount of water of sink before washing needs fresh water to supplement, it is contemplated that on ferrous oxidation influence, introducing it is fresh
Water is deoxidation desalted water, thus, the entrance of sink is also connected to the external deoxidation desalination mouth of a river before washing.
Further, split-phase membrane module includes tubular type Crossed-slot antenna film, and washing membrane module includes tubular type Crossed-slot antenna
Film.Continuous operation, high degree of automation may be implemented in this efficient membrane module of tubular type Crossed-slot antenna film, avoids tubular filter
The drawback that the equipment such as machine, leaf-type vacuum filter, diaphragm filter press are inefficient, energy consumption is high, land occupation is big.
Further, wash water processing component includes nanofiltration membrane and reverse osmosis membrane.Nanometer filtering film water is handled skill for the first time by the present invention
Art is applied in titanium dioxide washing recycling, produces that the water rate of recovery is high, concentrated water drainage is few, and by wash water, treated that clear liquid is used for film washes
The injection water for washing process, realizes recycling for washing water, significantly reduces the dosage and efflux wastewater of fresh deoxygenated water
Amount, reduces cost of sewage disposal.
Further, hydrolyzation material split-phase slot and elution slot become one, and after hydrolyzation material split-phase, slurry stays in hydrolysis
Expect in split-phase slot, hydrolyzation material split-phase slot can be continued to use as elution slot, carry out washing process.Without elution is separately provided again
Slot.
Further, the spent acid side of split-phase membrane module is connect with Waste acid treating device.Due to used split-phase membrane module this
The efficient membrane module of kind, no powder wear the risk of filter, and spent acid can be introduced directly into waste acid treatment dress without carrying out powder recovery processing
It sets, saves processing cost.
Fig. 3 is a kind of schematic diagram of embodiment of sulfuric acid method titanium pigment production system of the present invention, as shown, production system
Including hydrolyzing phase splitting unit, slurry film washing unit, wash water processing unit.Wherein, hydrolysis phase splitting unit includes: hydrolyzation material split-phase
Slot 101, split-phase circulating pump 201, split-phase membrane module 301.Slurry film washing unit include: elution slot 103, elution cycles pump 202,
Wash membrane module 302, qualified hopper 104, elution intake pump 204, qualified material transfering material pump 203.Wash water processing unit includes: before washing
Sink 105 washes rear sink 106, wash water processing intake pump 205, wash water processing component 303.
Wherein, the core element of split-phase membrane module 301 and washing membrane module 302 is tubular type Crossed-slot antenna film, phase membrane
Component 301 and washing membrane module 302 are to establish size circulations between membrane module and slurry tank by circulating pump.Wash water processing
The core element of wash water processing component 303 is made of nanofiltration membrane and reverse osmosis membrane in unit, and after processing, wash water processing unit produces
Raw a small amount of dope introduces effluent treatment plant, and sink 105 recycles before a large amount of clear liquid returns are washed.
In the embodiment three of production system of the present invention, supplemented on the basis of previous embodiment two.Novel sulfuric acid
Method titanium white production system further includes slurry slurrying unit, and slurry slurrying unit includes hollander tub and attached agitating device.Mashing
The outlet of the entrance of slot and the outlet of hydrolyzation material split-phase slot, hollander tub is connected to elution slot；Attached agitating device is set to
Inside hollander tub.By the concentration of hollander tub and the adjustable slurry of attached agitating device, to meet wanting for subsequent laundering process
It asks.
Further, water used in hollander tub is provided by washing rear sink, and recycling for water is furthermore achieved.
Fig. 4 is the schematic diagram of the preferred embodiment of sulfuric acid method titanium pigment production system of the present invention, as shown, production system
Including hydrolyzing phase splitting unit, slurry film washing unit, wash water processing unit.Wherein, hydrolysis phase splitting unit includes: hydrolyzation material split-phase
Slot 101, split-phase circulating pump 201, split-phase membrane module 301.Slurry slurrying unit includes: hollander tub 102 and attached agitating device.Slurry
Material film washing unit includes: elution slot 103, elution cycles pump 202, washing membrane module 302, qualified hopper 104, elution intake pump
204, qualified material transfering material pump 203.Wash water processing unit includes: to wash preceding sink 105, wash rear sink 106, wash water processing intake pump
205, wash water processing component 303.
Wherein, the core element of split-phase membrane module 301 and washing membrane module 302 is tubular type Crossed-slot antenna film, phase membrane
Component 301 and washing membrane module 302 are to establish size circulations between membrane module and slurry tank by circulating pump, to prevent film
Component blocks, and slurry flow velocity in membrane module is 2~8m/s, and liquid phase is saturating under 0.1~0.5MPa differential pressure action in slurry
Film is crossed, solid phase is intercepted at slurry side, and the microfiltration membranes 50~1000nm of precision, heatproof >=50 DEG C can effectively realize metatitanic acid
The interception of powder, film output clear liquid turbidity are less than 1NTU.
The core element of wash water processing component 303 is made of nanofiltration membrane and reverse osmosis membrane in wash water processing unit, through nanofiltration
After film and reverse osmosis membrane processing, a small amount of dope that wash water processing unit generates introduces effluent treatment plant, and a large amount of clear liquid returns are washed
Preceding sink 105 recycles, and iron content can reach 2ppm or less in the clear liquid.
When using novel sulfuric acid method titanium pigment water wash system shown in Fig. 4, technique mainly includes the following steps:
In addition to split-phase circulating pump 201, elution cycles pump 202, qualified material transfering material pump 203, elution water inlet first into system
Each tank body, groove body other than pump 204, wash water processing intake pump 205 are passed through inert gas.Specifically, to hydrolyzation material split-phase slot
101, hollander tub 102, elution slot 103, qualified hopper 104, wash preceding sink 105, wash rear sink 106, split-phase membrane module 301, wash
It washs membrane module 302, be passed through inert gas in wash water processing component 303, exclude air, and in each equipment drain sampling analysis,
After oxygen content is qualified, system prepares charging.
It hydrolyzes qualified material and introduces hydrolyzation material split-phase slot 101, through split-phase circulating pump 201, establish hydrolyzation material split-phase slot 101 and divide
Size circulations between phase membrane module 301, while the continuous output cleaning spent acid in 301 clear liquid end of split-phase membrane module, and then after introducing
Continuous Waste acid treating device；After slurry concentration reaches setting value in hydrolyzation material split-phase slot 101, to hollander tub 102, unlatching is stirred for discharging
It mixes, while handling intake pump 205 through wash water, wash rear sink 106 certainly and draw acid water to hollander tub 102 and be beaten；Hollander tub 102
After the completion of mashing, discharging to elution slot 103 is established between elution slot 103 and washing membrane module 302 through elution cycles pump 202
Size circulations, and continue output clear liquid to washing rear sink 106, while starting elution intake pump 204,105 diversion of sink before washing certainly
To elution slot 103, keep slurry concentration in elution slot 103 constant, after batch slurry washing is qualified, elution slot 103 stops water inlet,
It washs membrane module 302 and stops water outlet, the accepted stock discharging in elution slot 103 to qualified hopper 104, and then turn via qualification material
Material pump 203 is produced to next workshop section；Wash acid water in rear sink 106 and introduce hollander tub 102 on a small quantity and be beaten, remaining water via
Wash water handles intake pump 205 and introduces wash water processing component 303, and after processing, a small amount of dope of output introduces effluent treatment plant, produces
Sink 105 before a large amount of clear liquid returns are washed out, recycles the slurry washing for eluting unit；It is lasting to mend to keep systematic water balance
Fill a small amount of fresh water sink 105 to before washing.
Wherein, the fresh water that sink 105 is supplemented before washing is deoxidation desalted water, 20~50 DEG C of water temperature；It is involved in system
Split-phase membrane module, washing membrane module, slurry tank, water pot etc. be closed system, total system is sealed using inert gas,
Sealed pressure is 1~10KPa.
In the present embodiment, the slurry concentration that hydrolyzation material phase splitting unit obtains is 300~500g/L；Slurry after mashing is dense
Degree is 150~350g/L；The slurry concentration of the qualified material of washing is 150~350g/L, wherein simple substance iron content can reach 10ppm with
Under.
In the present invention, by controlling the slurry concentration of hydrolyzation material phase splitting unit, metatitanic acid slurry slurrying step can be cancelled
Suddenly, hydrolyzation material split-phase slot and elution slot being become one, after hydrolyzation material split-phase, slurry is stayed in hydrolyzation material split-phase slot,
Hydrolyzation material split-phase slot can be continued to use as elution slot, carry out washing process.Without elution slot is separately provided again.
It is exemplified below a concrete application embodiment:
Inert gas is passed through into each slurry tank of system, water pot first, excludes air, and in the sampling point of each equipment drain
Analysis, after oxygen content is qualified, system prepares charging.
The hydrolyzation material of concentration 180g/L introduces hydrolyzation material split-phase slot 101, controls 201 outlet pressure of split-phase circulating pump
0.3MPa, establishes size circulations, 301 output cleaning spent acid of split-phase membrane module, after spent acid turbidity 0.8NTU, 1h, hydrolyzation material split-phase
Slurry concentration reaches 400g/L in slot 101, and split-phase membrane module 301 stops clear liquid out, and slurry relies on position in hydrolyzation material split-phase slot 101
Poor discharging is to hollander tub 102.Stirring is opened, 102 inlet valve of hollander tub is opened, moisturizing, which is beaten, continues 15min, and slurry concentration reaches
To after 300g/L, stop moisturizing mashing.Hollander tub 102 is by potential difference discharging to elution slot 103,202 outlet of control elution cycles pump
Pressure 0.5MPa, establishes size circulations, and washing 302 output clear liquid of membrane module is to washing rear sink 106, flow 15m3/ h, clear liquid are turbid
0.5NTU is spent, while opening elution intake pump 204 to elution 103 moisturizing of slot, refill flow controls 15m3/ h washs 220min
Afterwards, slurry sampling is detected, simple substance iron content 8.4ppm in slurry, assert that washing is qualified, and elution slot 103 stops moisturizing, is washed
It washs membrane module 302 and stops clear liquid out, elute accepted stock in slot 103 and turn to expect via qualification material by the qualified hopper 104 of potential difference change
Pump 203 produces；During this period, wash water processing unit continuous service, output clear liquid 13.5m3/ h all returns to sink 105 before washing,
It is 1.5m that sink 105, which supplements fresh deoxidation desalination water flow, before washing3/h。
It should be noted that above-described embodiment can be freely combined as needed.The above is only of the invention preferred
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (20)
1. a kind of novel sulfuric acid process titanium white production technique characterized by comprising
Hydrolyzation material is carried out phase separating treatment, obtains metatitanic acid slurry and liquid phase cleaning spent acid by hydrolyzation material split-phase；
The washing of slurry film, the metatitanic acid slurry is washed, and removes the impurity iron ion in metatitanic acid slurry；
Wash water processing, is handled be discharged after washing that the slurry film washs, interception impurity iron ion；
The hydrolyzation material split-phase, slurry film washing and wash water processing carry out under closed environment.
2. novel sulfuric acid process titanium white production technique according to claim 1, it is characterised in that:
In the hydrolyzation material split-phase the step of, phase separating treatment is carried out to hydrolyzation material by split-phase membrane module.
3. novel sulfuric acid process titanium white production technique according to claim 1, it is characterised in that:
In the slurry film washing step, the metatitanic acid slurry is washed by washing membrane module；And the washing
Process by the way of continuum micromeehanics continuous effluent.
4. novel sulfuric acid process titanium white production technique according to claim 2 or 3, it is characterised in that:
The split-phase membrane module and the washing membrane module include tubular type Crossed-slot antenna film, and the tubular type Crossed-slot antenna
The precision of film is 50-1000nm, and heatproof is >=50 DEG C.
5. novel sulfuric acid process titanium white production technique according to claim 4, it is characterised in that:
Flow velocity of the slurry in membrane module is 2~8m/s, and liquid phase penetrates film under 0.1~0.5MPa differential pressure action in slurry, Gu
It is mutually intercepted at slurry side, film output clear liquid turbidity is less than 1NTU.
6. novel sulfuric acid process titanium white production technique according to claim 2 or 3, it is characterised in that:
The metatitanic acid slurry concentration that the hydrolyzation material split-phase step obtains is 300~500g/L；
And/or
The slurry concentration of the qualified material of the washing that the slurry film washing step obtains is 150~350g/L, wherein simple substance iron content
For 10ppm or less.
7. novel sulfuric acid process titanium white production technique according to claim 1, it is characterised in that:
In the step of wash water is handled, it will be discharged and handled after the washing by wash water processing component；The wash water
Processing component includes nanofiltration membrane and reverse osmosis membrane.
8. novel sulfuric acid process titanium white production technique according to claim 1, it is characterised in that:
In the wash water processing the step of, the step of clear liquid is returned as slurry film washing that treated, supplies water, real
Existing wash water recycles.
9. novel sulfuric acid process titanium white production technique according to claim 1, it is characterised in that:
The closed environment passes through inert gas seal realization, sealed pressure 1-10KPa；
And/or
In the slurry film washing step, the water source for washing includes supplement fresh water, and the supplement fresh water is deoxidation
Desalted water, 20-50 DEG C of water temperature.
10. according to claim 1,2, novel sulfuric acid process titanium white production technique, feature described in any one of 3,5,7,8,9
It is, between the hydrolyzation material split-phase and slurry film washing further include:
The metatitanic acid pulp dilution that the hydrolyzation material split-phase obtains is beaten to preset concentration by metatitanic acid slurry slurrying.
11. novel sulfuric acid process titanium white production technique according to claim 10, it is characterised in that:
Being beaten obtained slurry concentration is 150~350g/L；
And/or
It is beaten the clear liquid that water used uses the slurry film washing process output.
12. a kind of novel sulfuric acid process titanium white production system characterized by comprising
Hydrolyze phase splitting unit comprising for carrying out the split-phase membrane module of phase separating treatment to hydrolyzation material, obtain metatitanic acid slurry
With liquid phase cleaning spent acid；
Slurry film washing unit comprising the washing membrane module for being washed to the metatitanic acid slurry；
Wash water processing unit comprising the wash water washed after the washing for being obtained to the slurry film washing unit
Processing component；
The hydrolysis phase splitting unit, the slurry film washing unit, the wash water processing unit are closed structure.
13. novel sulfuric acid process titanium white production system according to claim 12, it is characterised in that:
The hydrolysis phase splitting unit includes hydrolyzation material split-phase slot, split-phase circulating pump, split-phase membrane module, the hydrolyzation material split-phase slot and
Size circulations are established by the split-phase circulating pump between the split-phase membrane module；
The slurry film washing unit include elution slot, elution cycles pump, washing membrane module, it is described elution slot entrance with it is described
The outlet of hydrolyzation material split-phase slot establishes slurry by elution cycles pump between the elution slot and the washing membrane module
Material circulation；
The wash water processing unit includes wash water processing intake pump, wash water processing component, the entrance of the wash water processing intake pump
It is connected to the waste liquid outlet of the washing membrane module, the outlet of the wash water processing intake pump and the wash water processing component connect
It is logical；
The hydrolyzation material split-phase slot, the split-phase membrane module, the elution slot, the washing membrane module, the wash water processing group
Part is closed structure.
14. novel sulfuric acid process titanium white production system according to claim 13, it is characterised in that:
Another outlet of the hydrolyzation material split-phase slot is connected to the entrance of the split-phase circulating pump, the outlet of the split-phase circulating pump
It is connected to the split-phase membrane module, the slurry side of the split-phase membrane module is connected to the entrance of the hydrolyzation material split-phase slot；
The entrance that the outlet of the elution slot is pumped with the elution cycles is connected to, the outlet and the washing of the elution cycles pump
Membrane module connection, the slurry side of the washing membrane module are connected to the entrance of the elution slot.
15. novel sulfuric acid process titanium white production system according to claim 13, it is characterised in that:
The slurry film washing unit further includes qualified hopper, qualified material transfering material pump；
The outlet of the entrance of the qualification hopper and the elution slot, the outlet of the qualification hopper and the qualified material turn
Material pump connection.
16. novel sulfuric acid process titanium white production system according to claim 13, it is characterised in that:
The slurry film washing unit further includes elution intake pump；
The wash water processing unit further includes washing preceding sink and washing rear sink；
It is described wash before the entrance of sink be connected to the clear liquid side of the wash water processing component, the outlet for washing preceding sink with it is described
The entrance connection of intake pump is eluted, the outlet of the elution intake pump is connected to the entrance of the elution slot；
The entrance for washing rear sink is connected to the waste liquid side of the washing membrane module, and the outlet for washing rear sink is washed with described
The connection of water process intake pump.
17. novel sulfuric acid process titanium white production system according to claim 16, it is characterised in that:
The entrance for washing preceding sink is also connected to the external deoxidation desalination mouth of a river.
18. novel sulfuric acid process titanium white production system according to claim 13, it is characterised in that:
The split-phase membrane module includes tubular type Crossed-slot antenna film；
And/or
The washing membrane module includes tubular type Crossed-slot antenna film；
And/or
The wash water processing component includes nanofiltration membrane and reverse osmosis membrane；
And/or
The hydrolyzation material split-phase slot and the elution slot become one；
And/or
The spent acid side of the split-phase membrane module is connect with Waste acid treating device.
19. the described in any item novel sulfuric acid process titanium white production systems of 3-17 according to claim 1, which is characterized in that also wrap
It includes:
Slurry slurrying unit comprising hollander tub and attached agitating device；
The outlet of the entrance of the hollander tub and the hydrolyzation material split-phase slot, the outlet of the hollander tub and the elution slot
Connection；
The attached agitating device is set to inside the hollander tub.
20. novel sulfuric acid process titanium white production system according to claim 19, which is characterized in that
The wash water processing unit further includes washing preceding sink and washing rear sink；
The entrance for washing rear sink is connected to the waste liquid side of the washing membrane module, and the outlet for washing rear sink is washed with described
The connection of water process intake pump；
It is described to wash exporting while being also connected to the entrance of the hollander tub for rear sink.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811253442.1A CN109133163A (en) | 2018-10-25 | 2018-10-25 | A kind of novel sulfuric acid method titanium pigment washing process and system |
| PCT/CN2019/104812 WO2020082916A1 (en) | 2018-10-25 | 2019-09-07 | Novel sulfuric acid process titanium oxide water washing process and system |
| ZA2021/03437A ZA202103437B (en) | 2018-10-25 | 2021-05-20 | Novel sulfuric acid process titanium oxide water washing process and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811253442.1A CN109133163A (en) | 2018-10-25 | 2018-10-25 | A kind of novel sulfuric acid method titanium pigment washing process and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109133163A true CN109133163A (en) | 2019-01-04 |
Family
ID=64810002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811253442.1A Pending CN109133163A (en) | 2018-10-25 | 2018-10-25 | A kind of novel sulfuric acid method titanium pigment washing process and system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN109133163A (en) |
| WO (1) | WO2020082916A1 (en) |
| ZA (1) | ZA202103437B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813098A (en) * | 2019-11-18 | 2020-02-21 | 上海安赐环保科技股份有限公司 | Sulfuric acid method titanium dioxide production method and cleaning method of membrane equipment |
| WO2020082916A1 (en) * | 2018-10-25 | 2020-04-30 | 上海安赐环保科技股份有限公司 | Novel sulfuric acid process titanium oxide water washing process and system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112624267A (en) * | 2020-12-17 | 2021-04-09 | 襄阳龙蟒钛业有限公司 | Titanium dioxide production reclaimed water recycling treatment method and treatment system thereof |
| CN114380328A (en) * | 2021-12-28 | 2022-04-22 | 龙佰襄阳钛业有限公司 | Titanium dioxide three-washing process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1175627A (en) * | 1996-09-05 | 1998-03-11 | 王建军 | Method for treatment of distillers, maize liquid |
| CN103043714A (en) * | 2012-12-31 | 2013-04-17 | 上海安赐机械设备有限公司 | Tubular membrane device applicable to titanium dioxide washing and washing method |
| CN104692456A (en) * | 2015-01-09 | 2015-06-10 | 上海安赐机械设备有限公司 | Green and environment-friendly sulfuric acid method titanium dioxide production device and process |
| CN105152207A (en) * | 2015-07-31 | 2015-12-16 | 上海安赐机械设备有限公司 | High-efficiency sulfuric acid method titanium dioxide washing system and washing process thereof |
| CN209081441U (en) * | 2018-10-25 | 2019-07-09 | 上海安赐环保科技股份有限公司 | A kind of novel sulfuric acid method titanium pigment water wash system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030175B (en) * | 2012-12-29 | 2014-12-31 | 上海安赐机械设备有限公司 | Device and method applied to metatitanic acid washing room |
| CN105152271B (en) * | 2015-07-31 | 2019-01-01 | 上海安赐环保科技股份有限公司 | A kind of titanium dioxide white water recycling technique and system |
| CN108658270A (en) * | 2017-11-27 | 2018-10-16 | 江苏久吾高科技股份有限公司 | A kind of processing method and processing device of titanium white production waste water |
| US20180099879A1 (en) * | 2017-12-12 | 2018-04-12 | Abdullah ALGHAFIS | Water treatment system and method of purifying water |
| CN109133163A (en) * | 2018-10-25 | 2019-01-04 | 上海安赐环保科技股份有限公司 | A kind of novel sulfuric acid method titanium pigment washing process and system |
-
2018
- 2018-10-25 CN CN201811253442.1A patent/CN109133163A/en active Pending
-
2019
- 2019-09-07 WO PCT/CN2019/104812 patent/WO2020082916A1/en active Application Filing
-
2021
- 2021-05-20 ZA ZA2021/03437A patent/ZA202103437B/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1175627A (en) * | 1996-09-05 | 1998-03-11 | 王建军 | Method for treatment of distillers, maize liquid |
| CN103043714A (en) * | 2012-12-31 | 2013-04-17 | 上海安赐机械设备有限公司 | Tubular membrane device applicable to titanium dioxide washing and washing method |
| CN104692456A (en) * | 2015-01-09 | 2015-06-10 | 上海安赐机械设备有限公司 | Green and environment-friendly sulfuric acid method titanium dioxide production device and process |
| CN105152207A (en) * | 2015-07-31 | 2015-12-16 | 上海安赐机械设备有限公司 | High-efficiency sulfuric acid method titanium dioxide washing system and washing process thereof |
| CN209081441U (en) * | 2018-10-25 | 2019-07-09 | 上海安赐环保科技股份有限公司 | A kind of novel sulfuric acid method titanium pigment water wash system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020082916A1 (en) * | 2018-10-25 | 2020-04-30 | 上海安赐环保科技股份有限公司 | Novel sulfuric acid process titanium oxide water washing process and system |
| CN110813098A (en) * | 2019-11-18 | 2020-02-21 | 上海安赐环保科技股份有限公司 | Sulfuric acid method titanium dioxide production method and cleaning method of membrane equipment |
| CN110813098B (en) * | 2019-11-18 | 2022-03-08 | 上海安赐环保科技股份有限公司 | Sulfuric acid method titanium dioxide production method and cleaning method of membrane equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA202103437B (en) | 2022-07-27 |
| WO2020082916A1 (en) | 2020-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109133163A (en) | A kind of novel sulfuric acid method titanium pigment washing process and system | |
| CN102616836B (en) | Preparation method of trivalent titanium solution | |
| CN103693670B (en) | Production method of calcium sulphate dehydrate and production device thereof | |
| CN106365197A (en) | Recycling method of titanium dioxide waste acid | |
| CN103938478A (en) | Cement grinding aid and method for fabricating cement grinding aid by using papermaking waste liquor | |
| CN209081441U (en) | A kind of novel sulfuric acid method titanium pigment water wash system | |
| CN102424418A (en) | Method for continuous filtration washing of hydrated titanium dioxide | |
| CN105771352B (en) | A kind of chemical fibre of titanium dioxide powder washing system and washing methods | |
| CN111874945B (en) | Sulfuric acid process titanium dioxide washing system, purification system and process | |
| CN105293867A (en) | Sludge dewatering and concentration treatment fundamental technology | |
| CN108373215A (en) | A kind of method that titanium dioxide wastewater is administered | |
| CN102587185A (en) | Method for cleaning and bleaching eucalyptus dissolving pulp | |
| CN104276600A (en) | Device and method applied to washing in post-processing work section of titanium dioxide preparation carried out by adopting chlorination method | |
| CN203079706U (en) | Device applied to metatitanic acid washing working section | |
| CN108938777A (en) | A kind of cape jasmine fruit extraction process | |
| CN205152044U (en) | A integration complete sets that is used for that sludge dewatering is concentrated to handle basic technology | |
| CN106925418B (en) | A kind of apparatus system and method for chromium slag washing | |
| CN209537174U (en) | A kind of processing unit of environment-friendly type sour water | |
| CN210030077U (en) | Phosphogypsum purification treatment system | |
| CN205046414U (en) | Many discs fiber recycling system | |
| CN209428280U (en) | A kind of miniature coating wastewater Processing Equipment | |
| CN209490522U (en) | The low conductance rinse-system of filter press | |
| CN202898906U (en) | Environment-friendly type water circulation papermaking device | |
| CN109761208A (en) | A kind of technique and device of ferric phosphate washing | |
| CN205710205U (en) | A kind of equipment of refining pure Fe (OH) 3 from pickling waste waters |
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 |