CN208911586U - A kind of ceramic filter system for filtration washing carbonated rare earth slurries - Google Patents
A kind of ceramic filter system for filtration washing carbonated rare earth slurries Download PDFInfo
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- CN208911586U CN208911586U CN201821497676.6U CN201821497676U CN208911586U CN 208911586 U CN208911586 U CN 208911586U CN 201821497676 U CN201821497676 U CN 201821497676U CN 208911586 U CN208911586 U CN 208911586U
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model provides a kind of ceramic filter system for filtration washing carbonated rare earth slurries, filtration system is composed in series by the ceramic filter of single-stage, the ceramic filter of single-stage specifically includes: feed flow meter, ceramic filter diaphragm plate, scraper, discharge port, vapor-liquid outlet, gas-liquid separation bucket, water pump, fluid level controller, vacuum pump, air compressor machine, the concatenated filtration system of level Four also includes: 1-4 grades of filters and 1-4 grades of dehydration barrels.After washing three times, solid particle purity is increased substantially, and wherein chloride content is lower than 50ppm hereinafter, ensure that product quality and stability；The utilization rate of washing water has performed to greatest extent, reaches 90% or more；The separation of deep or light brackish water is realized, significantly and the treating capacities of finishing operations is reduced, realizes precipitation energy conservation.
Description
Technical field
It is by ceramic filter the utility model relates to a kind of ceramic filter system for filtration washing carbonated rare earth slurries
The equipment that machine is used for separating, washing carbonated rare earth mixed serum belongs to rare-earth smelting separation and rare earth compound material preparation neck
Domain.
Background technique
Carbonated rare earth is rare-earth chloride solution, sulfate liquor or rare earth nitrate solution using ammonium hydrogen carbonate or carbonic acid
Following reaction mainly occurs in rare earth carbonate precipitation process for the product after sodium precipitating:
Reaction equation is as follows:
2RE3++3HCO3 -→RE2(CO3)3+3H+Formula (1)
H++HCO3 -→CO2↑+H2O formula (2)
2RE3++6HCO3 -→RE2(CO3)3+3CO2↑+3H2O formula (3)
Precipitating obtained carbonated rare earth solid can be used as intermediate products or directly as final products, sees related carbonated rare earth
Standard is shown in Table 1.
1 carbonated rare earth product grade of table and its standard *
* it note: derives from " light rare earth carbonate (GB/T 16479-2008) "
Rare earth carbonate precipitating production rare earth carbonate mixed solution (hereinafter referred to as carbonated rare earth slurries) must be walked through filtering
Rapid removal mother liquor of precipitation of ammonium, then wash carbonated rare earth filter cake through deionized water reduces anion chlorine root therein, sulfate radical, nitric acid
The content of root etc., and cationic calcium, magnesium etc..
Currently, the filtering and washing of carbonated rare earth sediment slurry are mainly carried out in rare-earth industry using three kinds of modes, first is that
Using centrifugal filtration mode of washing, that there are water consumptions is big for which, and yield rate of rare-earth products is low, and labor intensity of workers is big, scale
The problems such as production difficulty is big, there are equipment safety hidden danger；Second is that being washed using plate filtered off with suction, there are filter efficiencies for which
It is low, slurry amount is big, yield rate of rare-earth products is low, the problem that labor intensity of workers is big, large-scale production difficulty is big；Third is that using
Belt type filter mode, this method have the characteristics that high degree of automation, production capacity are big, but filter medium needs periodically frequently replacement,
It is at high cost.In addition, above-mentioned three kinds of modes generally use spray mode to wash molding filter cake, there are spray washing contact is dead
The problems such as angle causes washing effect bad, and slurry amount is big, and product impurity content is high and unstable.
Ceramic membrane board group at ceramic filter (hereinafter referred to as ceramic filter) be that the liquid of New-generation efficient energy-saving divides admittedly
From equipment, it is widely used to domestic and international iron ore concentrate, copper concentrate, lead concentrate, aluminium concentrate, nickel ore concentrate, Gold Concentrate under Normal Pressure, phosphorus concentrate and mixes
The industries such as concentrate
Ceramic filter can preferably solve the problems, such as that filtration washing existing for above-mentioned three kinds of filter devices is ineffective, dilute
In terms of native carbonate slurry separation, washing also with good application prospect, but rare earth carbonate slurries separating, washing is different from
Concentrate separation in mine should pursue the separation of solid-liquid high efficiency, it is also contemplated that the impurity element in rare earth carbonate is effectively reduced, mention
The value of high-carbon acid rare earth, therefore, the utility model are established a set of suitable for carbonated rare earth slurries mistake based on ceramic filter
Water conservation can be greatly lowered in the connection system and operating method of filter washing, reduce in product using chlorine root as the miscellaneous of representative
Matter content, it can be achieved that filter wash cake and filtering are stirred in serialization, be expected to realize rare earth carbonate slurries separating, washing process it is intelligent,
Networking, it is final to realize factory's Unmanned operation.
Utility model content
The filtration system is composed in series by the ceramic filter of single-stage, and the ceramic filter of the single-stage specifically wraps
Contain: feed flow meter, ceramic filter diaphragm plate, scraper, discharge port, vapor-liquid outlet, gas-liquid separation bucket, water pump, fluid level controller,
Vacuum pump, air compressor machine, the filtration system connected by filter after also include: 1,2,3,4 grades of filters and 1,2,3,4 grade
Dehydration barrel.
The ceramic filter diaphragm plate, filter medium are micropore ceramics.
Dehydration barrel in the system has gas-liquid separating function.
The ceramic filter system stated carries out blowback using air compressor machine from ceramic filter ceramic membrane.
The washing water that the water pump pumps out can clean the solid particle that previous stage ceramic filter scrapes.
The system can be adapted for the filtering of oxalic rare earth precipitates washing and rare earth compound synthesis sediment slurry
Washing.
The beneficial effects of the utility model are as follows:
1, by-pass filtration is used in the filtration washing system and three-level counter flow washing filters, and is isolated through by-pass filtration
The filter cake come after washing three times, and solid particle polluter content, which has obtained significantly washing, to be reduced, and wherein chloride content is low
In 50ppm hereinafter, ensure that product quality and stability.
2, in washing process, level-one washing water is pure water, and the water after washing enters second level washing, and second level washing water enters back into
Three-level washing realizes the recycling of water by the sufficiently washing filter cake of adverse current three times.
3, entire filtration washing process is separated by the mother liquor of by-pass filtration and through continuous flow upstream three-level washing water, is realized dense
The separation of light brackish water significantly and reduces the treating capacities of finishing operations, realizes water-saving and energy conservation.
4, using micropore ceramics as filter medium, filter effect is good, and filter medium is stablized, and is situated between without frequently replacement filtering
Matter, utilization rate of equipment and installations are high.
Detailed description of the invention
The ceramic filter that Fig. 1 shows single-stage is specific.It includes 1. feed flow meters, 2. ceramic filter diaphragm plates, 3. to scrape
Knife, 4. discharge ports, 5. vapor-liquid outlets, 6. gas-liquid separation buckets, 7. water pumps, 8. fluid level controllers, 9. vacuum pumps, 10. pneumatics
Machine.
Fig. 2 shows by level Four filter series connection after ceramic filter system: 11:1 grades of filters, 12:2 grades of filters,
13:3 grades of filters, 14:4 grades of filters, 15:1 grades of dehydration barrels, 17:3 grades of dehydration barrels of 16:2 grades of dehydration barrels, 18:4 grades of dehydration barrels.
Specific embodiment
Embodiment 1
It is filtered using carbonated rare earth solid-liquid mixed serum of the level Four ceramic filter to solid content 80g/L, and according to
30 times of liquid-solid ratio examples carry out spray washing using pure water, and countercurrent washing regime is washed, and obtain carbonated rare earth filter cake, wherein
Chloride content is 45ppm, rare-earth yield 99.6%.Concrete operations are as follows:
Carbonated rare earth slurries, which are measured, to be continuously entered in level-one ceramic filter by pumping by pipeline.With ceramic filter
Operation, the solid particle in feed liquid is adsorbed to filter plate surface, scraped and entered by scraper when filter plate goes to 180 ° of positions
Second level ceramic filter is directly mixed into slurries with the washing water of three-level dehydration barrel pump.With the fortune of second level ceramic filter
It goes, the solid particle in feed liquid is adsorbed to filter plate surface, is scraped when filter plate goes to 180 ° of positions by scraper and enters three-level
Ceramic filter is directly mixed into slurries with the washing water of level Four dehydration barrel pump.With the operation of three-stage ceramic filter, slurry
Solid particle in liquid is adsorbed to filter plate surface, is scraped when filter plate goes to 180 ° of positions by scraper and enters level Four ceramics mistake
Filter is directly mixed into slurries with pure water.With the operation of level Four ceramic filter, the solid particle in feed liquid is adsorbed to filter
Plate surface is scraped when filter plate goes to 180 ° of positions by scraper, obtains carbonated rare earth, and wherein chloride content is 45ppm, and rare earth is received
Rate 99.6%.
During the solid particle scraped to the same level ceramic filter, compressed air is used from ceramic filter ceramic membrane
Upper carry out blowback, ensure that ceramic membrane is not blocked by solid particle.
Carbonated rare earth mixed serum into level-one ceramic filter is filtered down with the operation of level-one ceramic filter
Mother liquor enter level-one dehydration barrel, dehydration barrel has gas-liquid separating function, then is extracted into subsequent processing by water pump and (ties as being concentrated by evaporation
It is brilliant).Second level is entered by the washing lotion under filter and is taken off with the operation of second level ceramic filter into the feed liquid of second level ceramic filter
Bucket, then by three-level wash water pump pump to subsequent processing (such as film concentration or stripper remove ammonia nitrogen).Into three-stage ceramic filter
Feed liquid enters three-level dehydration barrel by the washing lotion under filter, then by second level wash water pump pump to two with the operation of three-stage ceramic filter
Grade ceramic filter, carries out mixing cleaning to the solid particle that level-one ceramic filter scrapes.With level Four ceramic filter
Operation enters level Four dehydration barrel by the washing lotion under filter, then by level-one wash water pump pump to three-stage ceramic filter, to second level ceramics mistake
The solid particle that filter scrapes carries out mixing cleaning.
Comparative example 1
It is filtered using carbonated rare earth slurries of the first-stage centrifugal filter to solid content 80g/L, and solid according to 30 times of liquid
Ratio carries out spray washing using wash water, obtains carbonated rare earth filter cake, and wherein chloride content is 250ppm, rare-earth yield
98.5%.
Comparative example 2
It is filtered using carbonated rare earth slurries of the horizontal table filter to solid content 80g/L, and according to 30 times of liquid-solid ratio examples,
Spray washing is carried out using pure water, obtains carbonated rare earth filter cake, wherein chloride content is 270ppm, rare-earth yield 99.1%.
Comparative example 3
It is filtered using carbonated rare earth slurries of the band filter to solid content 80g/L, and according to 30 times of liquid-solid ratio examples,
Spray washing is carried out using pure water, obtains carbonated rare earth filter cake, wherein chloride content is 180ppm, rare-earth yield 99.4%.
Claims (5)
1. a kind of ceramic filter system for filtration washing carbonated rare earth slurries, it is characterised in that the filtration system is by list
The ceramic filter of grade is composed in series, and the ceramic filter of the single-stage specifically includes: feed flow meter (1), ceramic filter
Diaphragm plate (2), scraper (3), discharge port (4), vapor-liquid outlet (5), gas-liquid separation bucket (6), water pump (7), fluid level controller (8),
Vacuum pump (9), air compressor machine (10), the filtration system connected by filter after also include: 1 (11), 2 (12), 3 (13), 4
(14) grade filter and 1 (15), 2 (16), 3 (17), 4 (18) grade dehydration barrels.
2. a kind of ceramic filter system for filtration washing carbonated rare earth slurries according to claim 1, feature exist
In the ceramic filter diaphragm plate (2), filter medium is micropore ceramics.
3. a kind of ceramic filter system for filtration washing carbonated rare earth slurries according to claim 1, feature exist
In the ceramic filter system uses air compressor machine (10) and carries out blowback from ceramic filter ceramic membrane.
4. a kind of ceramic filter system for filtration washing carbonated rare earth slurries according to claim 1, feature exist
The solid particle that previous stage ceramic filter scrapes can be cleaned in the washing water that the water pump (7) pumps out.
5. a kind of ceramic filter system for filtration washing carbonated rare earth slurries according to claim 1, feature exist
It can be adapted for the filtration washing of oxalic rare earth precipitates washing and rare earth compound synthesis sediment slurry in the system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821497676.6U CN208911586U (en) | 2018-09-13 | 2018-09-13 | A kind of ceramic filter system for filtration washing carbonated rare earth slurries |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821497676.6U CN208911586U (en) | 2018-09-13 | 2018-09-13 | A kind of ceramic filter system for filtration washing carbonated rare earth slurries |
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| CN208911586U true CN208911586U (en) | 2019-05-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114082236A (en) * | 2021-11-17 | 2022-02-25 | 中冶长天国际工程有限责任公司 | High-salt solid waste integrated washing device |
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2018
- 2018-09-13 CN CN201821497676.6U patent/CN208911586U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114082236A (en) * | 2021-11-17 | 2022-02-25 | 中冶长天国际工程有限责任公司 | High-salt solid waste integrated washing device |
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