CN111135615B - Method for recovering post-treatment filtrate of titanium dioxide - Google Patents
Method for recovering post-treatment filtrate of titanium dioxide Download PDFInfo
- Publication number
- CN111135615B CN111135615B CN201911396624.9A CN201911396624A CN111135615B CN 111135615 B CN111135615 B CN 111135615B CN 201911396624 A CN201911396624 A CN 201911396624A CN 111135615 B CN111135615 B CN 111135615B
- Authority
- CN
- China
- Prior art keywords
- filter
- filtrate
- filter press
- washing
- tank
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/30—Feeding devices ; Discharge devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/30—Feeding devices ; Discharge devices
- B01D25/305—Feeding devices ; Discharge devices for discharging filtrate
-
- 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
- C01G23/0475—Purification
Abstract
The invention discloses a method for recovering titanium dioxide post-treatment filtrate capable of reducing the times of back-flushing and pulp-discharging operations of a tubular filter, which utilizes an independent filtrate collecting tank to temporarily store filtrate generated in the feeding process, directly utilizes a washing water pump for pumping washing water as a power device to return the filtrate to a filter press for secondary filter pressing after the feeding is finished, so that most of titanium dioxide in the filtrate is directly recovered in the filter press, and is not required to be recovered after being filtered by the tubular filter, the production capacity of a titanium dioxide post-treatment device is improved, the energy consumption is reduced, and the labor intensity of workers is reduced.
Description
Technical Field
The invention relates to post-coating treatment in the production process of titanium dioxide, in particular to filter pressing treatment of slurry after coating.
Background
At present, the finished product is obtained by performing filter pressing, washing, flash evaporation, drying and airflow crushing on the titanium dioxide slurry subjected to the coating treatment. The mainstream pressure filter used at present domestically is a diaphragm type pressure filter, the pressure filter comprises a pressure filter body, an inlet of the pressure filter comprises a central hole, slurry needing to be filtered enters the pressure filter through the central hole, namely, the central hole is connected with a storage tank after being coated and used for leading in the slurry after being coated, filtrate is discharged through four corner holes around the central hole, an outlet of the pressure filter comprises a discharge hopper for discharging filter cakes, the diaphragm type pressure filter with the central hole is also provided with a central washing tank and a side washing tank, an outlet of the central washing tank is connected with the central hole, outlets of washing water during central washing are the four corner holes, outlets of the side washing tank are connected with the two corner holes on one side and used for leading side washing water into the pressure filter, outlets of the washing water during side washing are the two corner holes on the other side, and all outlets of the washing water are connected with a washing water collecting tank.
The existing working process is as follows: the slurry after being coated is sent to a membrane filter press for filtering through a feeding pump of the filter press, the steps of central washing, side washing, squeezing, purging and the like are completed in the filter press, and filter cakes after being washed by filter pressing are unloaded into a discharge hopper of the filter press and then are conveyed to a flash evaporation drying post for drying through a discharge leather conveyor and a transfer leather conveyor; and the filtrate and washing water generated by filtering and washing enter a washing water collecting tank for collection, the filtrate and the washing water are pumped to a tubular filter through a washing water pump for filtration treatment, the collected titanium dioxide is placed in a thick slurry tank, and the titanium dioxide is transferred to a storage tank after coating for re-filtration.
The filtrate and the washing water from the filter press also contain partial titanium dioxide slurry, the prior art directly adopts a tubular filter for recovery, the tubular filter adopts a columnar filter bag for filtration, the filtration precision is higher, the clear liquid obtained by filtration enters an ultrafiltration process, and the obtained thick slurry enters a thick slurry tank for recovery through back flushing and enters a filter pressing washing process again.
Along with the increase of the output of titanium dioxide, a large amount of filtrate is generated in the filter pressing process, in addition, the particle size of chlorinated titanium dioxide is smaller, more titanium dioxide penetrates into the filtrate in the feeding process of the filter press, the content of the titanium dioxide in the filtrate is higher, a large amount of filtrate containing the titanium dioxide with higher concentration can quickly form a thicker filter layer outside a filter bag, the filtering pressure is increased, the filtering flow is reduced, and the tubular filter has to carry out back flushing and pulp discharging frequently. This phenomenon is more pronounced especially after a period of use of the filter cloth.
Because the back-blowing pulp discharging operation of the tubular filter is frequent and the filtering capacity of the filtrate is small, the applicant needs to perform 10 pulp discharging operations per week on average according to the statistics of field production running data, and the filtering capacity of the filtrate per hour is 30m on average3And h, the production capacity of a titanium dioxide post-treatment production device is limited to a great extent.
Disclosure of Invention
When the times of back flushing and pulp discharging become frequent, the treatment capacity of the filtrate gradually can not meet the production requirement. In order to solve the problem, the invention provides a method for recovering post-treatment filtrate of titanium dioxide, which can reduce the times of back-flushing and pulp discharging operations of a tubular filter, thereby increasing the efficiency of the conventional tubular filter and improving the treatment capacity of the conventional tubular filter.
The technical scheme adopted by the invention for solving the technical problems is as follows: the method for recovering post-treatment filtrate of titanium dioxide comprises a filter press, wherein for a primary feeding process, the filtrate discharged from the filter press is returned to the same filter press for secondary filter pressing after the feeding is finished. The method is characterized in that the method comprises the steps of collecting filtrate generated in the feeding process of materials in the primary feeding process, feeding the collected filtrate into the same filter press, and performing secondary filter pressing by using the filter press, namely, taking the filter press as a pre-filtering device of a tubular filter to greatly reduce the content of titanium dioxide in the filtrate fed into the tubular filter, thereby reducing the times of back-blowing and pulp discharging of the tubular filter and increasing the filtrate filtering capacity of the tubular filter in unit time.
The filtrate gradually appears and increases along with the beginning of the feeding process, in order to collect the filtrate of the feeding process with larger titanium dioxide content, the filtrate is distinguished from the washing water or the filtrate of the secondary filter pressing, preferably, an independent filtrate collecting tank is used for temporarily storing the filtrate generated in the feeding process, when the feeding is finished, the part of the filtrate is also completely collected, the part of the filtrate is immediately returned to start the secondary filter pressing, the washing water collecting tank is used for temporarily storing the secondary filtrate generated in the secondary filter pressing process, the returning of the filtrate is regarded as the completion of the secondary filter pressing, and the filter cake generated in the feeding process is immediately washed. The washing step is as in the prior art.
When the adopted filter press is a diaphragm type filter press, the washing steps comprise center washing and side washing, and secondary filtrate generated by secondary filter pressing only contains less titanium dioxide, so that the secondary filtrate can be combined with washing water generated in the center washing and side washing processes to enter post-treatment. The secondary filtrate and the filter-press wash are typically hydrated and passed to a tubular filter for filtration treatment.
The washing water pump equipped in the filter press is used as a power device for returning the filtrate into the same filter press, so that the equipment investment can be saved.
The invention has the beneficial effects that: most of the titanium dioxide in the filtrate is directly recovered in the filter press, and is not required to be recovered after being filtered by a tubular filter, so that the production capacity of the titanium dioxide post-treatment device is improved, the energy consumption is reduced, and the labor intensity of workers is reduced.
Drawings
FIG. 1 is a schematic diagram of a conventional titanium dioxide coating post-treatment method.
FIG. 2 is a schematic diagram of the recovery method of post-treatment filtrate of titanium dioxide according to the present invention.
FIG. 3 is a schematic structural diagram of a titanium dioxide coating post-treatment device applying the invention.
Fig. 4 is a schematic illustration of the central and angular hole distribution of the filter press of fig. 3.
Labeled as: 1-a post-coating storage tank, 2-a central washing tank, 3-a side washing tank, 4-a filtrate collection tank, 5-a washing water collection tank, 6-a filter press, 7-a discharge hopper, 8-a tubular filter, 9-a thick slurry tank, 10-a belt conveyor, 11-a filter press feed pump, 12-a washing water pump, 13-a washing water pump, 14-a thick slurry pump, 15-an angle hole, 16-a central hole, 17-a first valve, 18-a second valve, 19-a third valve, 20-a feed line, 21-a fourth valve, 22-a fifth valve, 23-a sixth valve, 24-a seventh valve, 25-an eighth valve, 26-a ninth valve, 27-a tenth valve, 28-an eleventh valve, 29-a tenth valve, and a 30-a side washing water inlet, 31-a tenth valve, 32-a fourteenth valve, 33-a fifteenth valve, 34-a sixteenth valve, 35-a seventeenth valve, 36-an eighteenth valve, 37-a sampling port, 38-a nineteenth valve, 39-a twentieth valve, 40-a filtrate outlet, 41-a twenty-first valve, 42-a twentieth valve, 50-a washing water outlet, 60-a filter cake feed port, 70-a clear liquid outlet and 80-a back-blowing pulp outlet.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 3, the recovery device for post-treatment filtrate of titanium dioxide according to the present invention includes a filter press 6, a filtrate outlet 40 thereof, and a filter cake feed opening 60, where the filter press 6 is a diaphragm type filter press, a central hole 16 thereof is connected to a storage tank 1 after being coated with a film through a feed pipeline 20, the central hole 16 is also connected to a central washing tank 2 through a water inlet pipeline, the filtrate outlet 40 is connected to a washing water collecting tank 5, the filtrate outlet 40 of the filter press 6 is further connected to a filtrate collecting tank 4, and the filtrate collecting tank 4 is connected to the central hole 16 of the filter press 6 through a filtrate pipeline, so that filter press filtrate after being fed is separately collected and then returned to the same filter press for secondary filter press.
The water inlet pipeline is provided with a washing water pump 12, and the washing water pump 12 is also positioned on the filtrate pipeline, so that the washing water pump 12 is directly used as power for pumping filtrate back to the filter press, and the equipment investment is reduced.
The filter press 6 is a diaphragm type filter press, the washing tank is divided into a central washing tank 2 and a side washing tank 3, a central hole 16 is connected with the central washing tank 2, two corner holes 15 on one side are connected with the side washing tank 3, and meanwhile, the four corner holes 15 are connected with a washing water collecting tank 5 to realize central washing and side washing.
The washing water collecting tank 5 is connected with a tubular filter 8, so that titanium dioxide in the washing water is recovered.
The tubular filter 8 comprises a back-blowing slurry outlet 80, the back-blowing slurry outlet 80 is connected with the central hole 16 of the filter press 6 through the thick slurry groove 9, and the back-blowing slurry is returned to the filter press 6 to recover the titanium dioxide adhered to the tubular filter 8.
The filtrate collection tank 4 is connected to a tube filter 8, and the filtrate from the filtrate collection tank 4 can also be fed directly to the tube filter 8 for treatment if necessary.
Example (b):
as shown in fig. 3 and 4, the titanium dioxide coating post-treatment device for realizing the recovery method of the titanium dioxide post-treatment filtrate comprises a coating post-storage tank 1, a central washing tank 2, a side washing tank 3, a filtrate collecting tank 4, a washing water collecting tank 5, a filter press 6, a discharge hopper 7, a tubular filter 8, a thick slurry tank 9, a belt conveyor 10, a filter press feed pump 11, a washing water pump 12, a washing water pump 13 and a thick slurry pump 14, wherein the filter press 6 is a diaphragm type filter press. The storage tank 1 after coating is connected with the inlet of a filter press feeding pump 11 through a pipeline provided with a first valve 17, the outlet of the filter press feeding pump 11 is connected with a central hole 16 of a filter press 6 through a pipeline provided with a second valve 18 and a third valve 19, a central washing water tank 2 is connected with the inlet of a washing water pump 12 through a pipeline provided with a fifth valve 22 and an eleventh valve 28, the eleventh valve 28 is used for controlling the on-off of the pipeline of the central washing water tank 2 to the central hole 16, a side washing water tank 3 is connected to the pipeline between the fifth valve 22 and the eleventh valve 28 through a pipeline provided with a sixth valve 23, the fifth valve 22 is used for controlling the water outlet amount of the central washing water tank 2, the sixth valve 23 is used for controlling the water outlet amount of the side washing water tank 3, the outlet of the washing water pump 12 is connected to the pipeline between the third valve 19 and the central hole 16 through a tenth valve 27 and a fourth valve 21, the third valve 19 is positioned on the feeding pipeline 20 and is used for controlling the on-off of the pipeline of the storage tank 1 after coating to the central hole 16, the tenth valve 27 and the fourth valve 21 are located on a filtrate pipeline and are used for controlling the on-off of a pipeline of the filtrate collection tank 4 to the central hole 16, the two corner holes 15 on one side of the filter press 6 are connected in parallel to form a side washing water inlet 30, the side washing water inlet 30 is also connected to the outlet end of the tenth valve 27 through the ninth valve 26, filtrate or washing water from the two corner holes 15 on the other side can selectively enter the filtrate collection tank 4 through the filtrate outlet 40 after passing through the sixteenth valve 34 or can selectively enter the washing water collection tank 5 after passing through the seventeenth valve 35 and being collected at the washing water outlet 50, and filtrate or washing water from the other two corner holes 15 can selectively enter the washing water collection tank 5 after passing through the eighteenth valve 36 and the sixteenth valve 34 and being collected at the washing water outlet 50 or can enter the filtrate collection tank 4 through the filtrate outlet 40 after passing through the eighteenth valve 36 and the sixteenth valve 34. An outlet of the filtrate collection tank 4 is connected to a pipeline between the sixth valve 23 and the eleventh valve 28 via the seventh valve 24, an outlet of the wash water collection tank 5 is connected to a pipeline between the seventh valve 24 and the eleventh valve 28 via the eighth valve 25 and the tenth valve 29, and a sampling port 37 is provided on a pipeline connected in parallel before the sixteenth valve 34 and before the seventeenth valve 35. The outlet of the filtrate collecting tank 4 is connected with the inlet of a washing water pump 13 through a tenth valve 29 and a thirteenth valve 31, the outlet of the washing water collecting tank 5 is connected to a pipeline between the tenth valve 29 and the thirteenth valve 31 through an eighth valve 25, the outlet of the washing water pump 13 is connected with the inlet of a tubular filter 8 through a fourteenth valve 32 and a fifteenth valve 33, a clear liquid outlet 70 of the tubular filter 8 goes through an ultrafiltration process after passing through a nineteenth valve 38, a back-flushing slurry outlet 80 of the tubular filter 8 enters a thick slurry tank 9 after passing through a twentieth valve 39, the outlet of the thick slurry tank 9 is connected with the inlet of a thick slurry pump 14 through a twenty-first valve 41, and the outlet of the thick slurry pump 14 is connected with the inlet of a storage tank 1 after coating through a twentieth valve 42. The discharge hopper 7 and the belt conveyor 10 are arranged close to the cake discharge 60 of the filter press 6.
Referring to fig. 2, 3 and 4, only opening the first valve 17, the second valve 18, the third valve 19, the sixteenth valve 34 and the eighteenth valve 36, pumping the coated slurry into the central hole 16 of the diaphragm type filter press by the filter press feeding pump 11, starting feeding and filter pressing, wherein a filter aid layer is gradually formed on the filter cloth of the filter press in the process, the feeding is considered to be finished when the filter press 6 reaches the rated pressure, and in the feeding process, filtrate from the four corner holes 15 enters the filtrate collecting tank 4 through the sixteenth valve 34; after the feeding is finished, only opening the seventh valve 24, the tenth valve 27, the eighteenth valve 36 and the seventeenth valve 35, returning the filtrate in the filtrate collecting tank 4 into the center of the filter press 6 through the washing water pump 12, performing secondary filter pressing in the filter press 6, regarding the completion of the filtrate returning as the completion of the secondary filter pressing, and temporarily storing the secondary filtrate generated in the secondary filter pressing process by using the washing water collecting tank 5; after the secondary filter pressing is finished, only opening a fifth valve 22, a fourth valve 21, an eighteenth valve 36 and a seventeenth valve 35, pumping water in the central washing tank 2 into the central hole 16 through a washing water pump 12, performing central washing on filter cakes, collecting washing water from two corner holes 15 on one side by a washing water collecting tank 5 after passing through the seventeenth valve 35, and collecting washing water from two corner holes 15 on the other side by the washing water collecting tank 5 after passing through the eighteenth valve 36 and the seventeenth valve 35; after the center washing is finished, only opening a sixth valve 23, a ninth valve 26, an eighteenth valve 36 and a seventeenth valve 35, pumping water in the side washing water tank 3 into the two corner holes 15 on one side through a washing water pump 12, side washing the filter cake, and collecting washing water from the two corner holes 15 on the other side by a washing water collecting tank 5 after passing through the eighteenth valve 36 and the seventeenth valve 35; the filter cake after the steps of center washing, side washing, squeezing and blowing is discharged into a discharge hopper 7 and then is conveyed to a flash evaporation drying station by a belt conveyor 10 for drying. And (3) opening only the eighth valve 25, the thirteenth valve 31, the fourteenth valve 32, the fifteenth valve 33, the nineteenth valve 38 and the twentieth valve 39, pumping the filtrate and all the washing water generated by the secondary filter pressing to the tubular filter 8 through the washing water pump 13 for filtering treatment, allowing the filtrate to enter an ultrafiltration process for treatment, allowing the collected titanium dioxide to enter the thick slurry tank 9, and transferring the titanium dioxide to the storage tank 1 after coating for re-filtering.
Through field production operation data statistics, after the method of the invention is adopted, the average weekly pulp discharge operation of the tubular filter in the set is reduced from 10 times to 2 times, and the average hourly filtration capacity is reduced from 30m3H increased to 80m3 H is used as the reference value. When filtrate is filtered by the tubular filter after being secondarily filter-pressed by the filter press, less filter cakes are generated on filter bags of the tubular filter, the back-blowing and pulp discharging frequency of the tubular filter is greatly reduced, so that the treatment capacity of the filtrate is improved, and meanwhile, most titanium dioxide in the filtrate is directly recovered after passing through the filter press, so that the energy consumption and the labor intensity are reduced.
The core contribution of the invention is that through careful observation and analysis, the treatment capacity is greatly improved only at the cost of little pipeline modification, and simultaneously, the back flushing frequency of the tubular filter is reduced, which is beneficial to improving the service life of the tubular filter.
Claims (4)
1. A method for recovering post-treatment filtrate of titanium dioxide comprises a post-coating storage tank (1), a central washing tank (2), a side washing tank (3), a washing water collecting tank (5), a filter press (6) and a filtrate outlet (40) thereof, a tubular filter (8) and a thick slurry tank (9), wherein the filter press (6) is a diaphragm type filter press, a central hole (16) of the filter press (6) is connected with the post-coating storage tank (1) through a feeding pipeline (20), the central hole (16) is also connected with the central washing tank (2) through a water inlet pipeline, two corner holes (15) at one side of the filter press (6) are connected with the side washing tank (3), meanwhile, the four corner holes (15) are all connected with the washing water collecting tank (5), the filtrate outlet (40) is connected with the washing water collecting tank (5), and the washing water (5) is connected with the tubular filter (8), the filtrate of the filter press (6) is filtered by means of a tube filter (8), which is characterized in that: the filter liquor outlet (40) of the filter press (6) is additionally connected with the filter liquor collecting tank (4), the filter liquor collecting tank (4) is connected with a center hole (16) of the filter press (6) through a filter liquor pipeline, the feeding of the filter press (6) is titanium dioxide slurry subjected to membrane coating treatment, for the primary feeding process of the filter press (6), the filter liquor discharged by the filter press (6) in the feeding process all enters the filter liquor collecting tank (4), the filter liquor generated in the feeding process is temporarily stored by utilizing the independent filter liquor collecting tank (4), the filter liquor discharged by the filter press (6) is sent back to the same filter press (6) for secondary filter pressing after the feeding is completed, the tubular filter (8) comprises a back-blowing slurry discharge port (80), and the back-blowing slurry discharge port (80) is connected with the center hole (16) of the filter press (6) through a thick slurry tank (9).
2. The method for recovering post-treatment filtrate of titanium dioxide according to claim 1, which is characterized in that: and (3) temporarily storing secondary filtrate generated in the secondary filter pressing process by using a washing water collecting tank (5), returning the filtrate to finish the secondary filter pressing, and immediately washing a filter cake generated in the feeding process.
3. The method for recovering post-treatment filtrate of titanium dioxide according to claim 2, which is characterized in that: the washing steps comprise center washing and side washing, and the secondary filtrate is combined with washing water generated in the center washing and side washing processes and enters a tubular filter (8) for filtration.
4. A method for recovering post-treatment filtrate of titanium dioxide according to claim 1, 2 or 3, characterized by: the washing water pump (12) equipped in the filter press (6) is used as a power device for returning the filtrate to the same filter press (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911396624.9A CN111135615B (en) | 2019-12-30 | 2019-12-30 | Method for recovering post-treatment filtrate of titanium dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911396624.9A CN111135615B (en) | 2019-12-30 | 2019-12-30 | Method for recovering post-treatment filtrate of titanium dioxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111135615A CN111135615A (en) | 2020-05-12 |
| CN111135615B true CN111135615B (en) | 2022-04-26 |
Family
ID=70521884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911396624.9A Active CN111135615B (en) | 2019-12-30 | 2019-12-30 | Method for recovering post-treatment filtrate of titanium dioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111135615B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB754915A (en) * | 1954-10-08 | 1956-08-15 | Du Pont | Improvements in or relating to the production of titanium tetrachloride |
| KR100909477B1 (en) * | 2009-04-17 | 2009-07-28 | 한국농어촌공사 | Agricultural water-recycling system comprising fe-ionizing module and method for recycling agricultural water using the same |
| CN104276600A (en) * | 2014-09-16 | 2015-01-14 | 上海安赐机械设备有限公司 | Device and method applied to washing in post-processing work section of titanium dioxide preparation carried out by adopting chlorination method |
| CN106365197A (en) * | 2016-08-31 | 2017-02-01 | 四川龙蟒钛业股份有限公司 | Recycling method of titanium dioxide waste acid |
| CN109504132A (en) * | 2018-12-14 | 2019-03-22 | 攀枝花东方钛业有限公司 | Titanium dioxide organic process device and method |
| CN211836708U (en) * | 2019-12-30 | 2020-11-03 | 宜宾天原海丰和泰有限公司 | Recovery device for post-treatment filtrate of titanium dioxide |
-
2019
- 2019-12-30 CN CN201911396624.9A patent/CN111135615B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB754915A (en) * | 1954-10-08 | 1956-08-15 | Du Pont | Improvements in or relating to the production of titanium tetrachloride |
| KR100909477B1 (en) * | 2009-04-17 | 2009-07-28 | 한국농어촌공사 | Agricultural water-recycling system comprising fe-ionizing module and method for recycling agricultural water using the same |
| CN104276600A (en) * | 2014-09-16 | 2015-01-14 | 上海安赐机械设备有限公司 | Device and method applied to washing in post-processing work section of titanium dioxide preparation carried out by adopting chlorination method |
| CN106365197A (en) * | 2016-08-31 | 2017-02-01 | 四川龙蟒钛业股份有限公司 | Recycling method of titanium dioxide waste acid |
| CN109504132A (en) * | 2018-12-14 | 2019-03-22 | 攀枝花东方钛业有限公司 | Titanium dioxide organic process device and method |
| CN211836708U (en) * | 2019-12-30 | 2020-11-03 | 宜宾天原海丰和泰有限公司 | Recovery device for post-treatment filtrate of titanium dioxide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111135615A (en) | 2020-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211836708U (en) | Recovery device for post-treatment filtrate of titanium dioxide | |
| CN207941279U (en) | One kind three washes formula band filter | |
| CN213221207U (en) | Adsorbent recovery device applied to brine lithium extraction equipment | |
| CN216963681U (en) | Air compressor of filter press unit is to material surge tank formula substep steady voltage charge-in system of moisturizing | |
| CN111135615B (en) | Method for recovering post-treatment filtrate of titanium dioxide | |
| CN111701306A (en) | Solid-liquid separation device and method | |
| CN105771417A (en) | Method for filtering and recovering solid particles in mother solution at PTA oxidation stage and filter using method | |
| CN207493344U (en) | A kind of plate type pressure filter | |
| CN113893588B (en) | Plate-and-frame filter press with cleaning effect | |
| CN212700772U (en) | Solid-liquid separation device | |
| CN204910961U (en) | Belt vacuum filter production process systems of medicament is retrieved in water conservation | |
| CN110038328B (en) | Online maintenance method of plate-frame membrane filter press and application thereof | |
| CN210845408U (en) | Membrane filter press cleaning system | |
| CN104529003B (en) | A kind of acid regeneration equipment | |
| CN203291612U (en) | Rotary filtering device | |
| CN111514625A (en) | Filtering and washing process of membrane plate-and-frame filter press | |
| CN209612310U (en) | A kind of filter press convenient for discharging | |
| CN207786116U (en) | A kind of filter | |
| CN202654768U (en) | System for removing active carbon in adipate solution | |
| CN218357776U (en) | External cleaning device for ceramic filter | |
| CN114073868B (en) | Self-circulation filtering system and filtering process thereof | |
| CN202089916U (en) | Vacuum suction filter unit used for producing corn starch | |
| CN212523156U (en) | Water inlet and outlet structure of plate and frame filter press | |
| CN209900827U (en) | Qinqiao oral liquid filter equipment | |
| CN216909871U (en) | Integrated concentration device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |