CN113713449A - Washing device and washing method for crude selenium filter press of Kaldo furnace system - Google Patents
Washing device and washing method for crude selenium filter press of Kaldo furnace system Download PDFInfo
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- CN113713449A CN113713449A CN202110960968.9A CN202110960968A CN113713449A CN 113713449 A CN113713449 A CN 113713449A CN 202110960968 A CN202110960968 A CN 202110960968A CN 113713449 A CN113713449 A CN 113713449A
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- China
- Prior art keywords
- valve
- washing
- hot water
- filter cake
- filter press
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- 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.)
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- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052711 selenium Inorganic materials 0.000 title claims abstract description 58
- 239000011669 selenium Substances 0.000 title claims abstract description 58
- 238000005406 washing Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000012065 filter cake Substances 0.000 claims abstract description 45
- 238000011010 flushing procedure Methods 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000005086 pumping Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 238000002791 soaking Methods 0.000 claims description 6
- 238000007605 air drying Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- JPJALAQPGMAKDF-UHFFFAOYSA-N selenium dioxide Chemical compound O=[Se]=O JPJALAQPGMAKDF-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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
- B01D25/28—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
- B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
- B01D25/282—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying
- B01D25/284—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying by gases or by heating
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a washing device and a washing method for a crude selenium filter press of a Kaldo furnace system, which belong to the technical field of filter press washing, and comprise a feeding valve, a washing valve, a compressed air valve, a liquid merging valve, a total liquid returning valve and a filter press, wherein the filter press comprises a crude selenium filter cake bag, the feeding valve, the compressed air valve, the liquid merging valve and the total liquid returning valve are connected in series through a circuit, the inlet of the washing valve is connected with a hot water pressure pump, and the total liquid returning valve, the washing valve and the liquid merging valve are connected in series through a circuit; the crude selenium filter cake is fully soaked by hot water, so that water-soluble elements are fully dissolved into water from the filter cake, and then the filter cake is flushed by the hot water under pressure, so that a large amount of impurities in the filter cake are taken away with flushing water, and the steps are repeated for secondary operation in order to ensure flushing quality, namely, the flushing of the filter cake is enhanced by a two-bubble two-flushing method.
Description
Technical Field
The invention belongs to the technical field of filter press washing, and particularly relates to a washing device and a washing method for a crude selenium filter press of a Kaldo furnace system.
Background
In order to adapt to national environmental protection and energy policy, more and more gold and silver smelting in non-ferrous industry gradually adopts a Kaldo furnace fire method anode mud treatment process, process flue gas utilizes a Venturi system to realize temperature reduction and dust removal, valuable elements such as selenium and tellurium in the flue gas are recovered to enter circulating liquid for enrichment, crude selenium is reduced and precipitated through liquid purification, and then the qualified crude selenium product is obtained through filtering and washing by a filter press.
After the Kaldo furnace system is used for batch production, the quality of the produced crude selenium fluctuates, the unqualified crude selenium affects the yield and the quality of the selenium dioxide, the quality fluctuation of the crude selenium affects the overall quality of the crude selenium all the year around, and experiments show that the impurity content remained in the crude selenium filter cake is different due to different flushing degrees of different operators on the crude selenium filter press filter cake.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a washing device and a washing method for a crude selenium filter press of a Kaldo furnace system, which can not only save the using amount of washing water, but also ensure the removal effect of a large amount of impurity ions in a crude selenium filter cake.
In order to achieve the purpose, the invention provides a washing device of a crude selenium filter press of a Kaldo furnace system, which comprises a feeding valve, a washing valve, a compressed air valve, a liquid merging valve, a total liquid returning valve and a filter press, wherein the filter press comprises a crude selenium filter cake bag, the feeding valve, the compressed air valve, the liquid merging valve and the total liquid returning valve are connected in series through a circuit, the inlet of the washing valve is connected with a hot water pressure pump, and the total liquid returning valve, the washing valve and the liquid merging valve are connected in series through a circuit.
A method for washing a crude selenium filter press of a Kaldo furnace system comprises the following steps:
and S1, opening a feeding valve to feed the filter press, and closing the feeding valve when the feeding pressure of the filter press reaches 5 kilograms.
And S2, opening the flushing valve and starting a hot water pressure pump, pumping hot water into the filter press through the hot water pressure pump, and closing the flushing valve and stopping the hot water pressure pump when the hot water fills the whole coarse selenium filter cake bag.
S3, soaking and washing the crude selenium filter cake in the crude selenium filter cake bag in hot water.
And S4, opening the total liquid return valve, simultaneously opening the liquid mixing valve and the flushing valve, and pumping hot water to flush the crude selenium filter cake.
S5, repeating the steps of S1-S4.
And S6, opening a compressed air valve and air-drying the crude selenium filter cake through compressed air.
The hot water temperature used in the S2-S5 was 75 ℃.
The soaking and washing time of the crude selenium filter cake in the S3 in hot water is 30 minutes.
The time for pumping hot water to wash the crude selenium filter cake in the S4 is 2 minutes.
Compared with the prior art, the invention has the following beneficial effects:
1) the washing method forms a fixed effective operation standard, so that the taste of the crude selenium is not fluctuated and can be stabilized in a standard range, the filter cake washing water contains other valuable metal ions, the valuable metal ions are settled, filtered and recovered by industrial treatment, and then the filtered wastewater is sent to a sewage purification system for further advanced treatment, and the new washing method can not only save the consumption of the washing water, but also ensure the removal effect of a large amount of impurity ions in the crude selenium filter cake;
2) the crude selenium filter cake is fully soaked by hot water, so that water-soluble elements are fully dissolved into water from the filter cake, and then the filter cake is flushed by the hot water under pressure, so that a large amount of impurities in the filter cake are taken away with flushing water, and the steps are repeated for secondary operation in order to ensure flushing quality, namely, the flushing of the filter cake is enhanced by a two-bubble two-flushing method.
Drawings
FIG. 1 is a schematic view of the piping structure of the washing apparatus for crude selenium filter press of Kaldo furnace system of the present invention;
fig. 2 is a schematic diagram of a multiple valve circuit of the present invention.
Figure number and name: 1. a feed valve; 2. flushing the valve; 3. a compressed air valve; 4. a mixing valve; 5. a total return fluid valve; 6. and (4) a filter press.
Detailed Description
The invention will be described in detail with reference to the drawings and specific embodiments, which are illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1-2, the present invention provides the following technical solutions: the crude selenium filter press flushing device of the Kaldo furnace system comprises a feeding valve 1, a flushing valve 2, a compressed air valve 3, a liquid mixing valve 4, a total liquid return valve 5 and a filter press 6, wherein the filter press 6 comprises a crude selenium filter cake bag, the feeding valve 1, the compressed air valve 3, the liquid mixing valve 4 and the total liquid return valve 5 are connected in series through a circuit, an inlet of the flushing valve 2 is connected with a hot water pressure pump, and the total liquid return valve 5, the flushing valve 2 and the liquid mixing valve 4 are connected in series through a circuit.
In this embodiment: the crude selenium filter cake is fully soaked by hot water, so that water-soluble elements are fully dissolved into water from the filter cake, and then the filter cake is flushed by the hot water under pressure, so that a large amount of impurities in the filter cake are taken away with flushing water, and the steps are repeated for secondary operation in order to ensure flushing quality, namely, the flushing of the filter cake is enhanced by a two-bubble two-flushing method.
As a technical optimization scheme of the invention, the washing method of the crude selenium filter press of the Kaldo furnace system, namely a two-bubble two-washing method, comprises the following steps:
and S1, opening the feeding valve 1 to feed the filter press 6, and closing the feeding valve 1 when the feeding pressure of the filter press 6 reaches 5 kilograms.
And S2, opening the flushing valve 2 and starting a hot water pressure pump, pumping hot water into the filter press 6 through the hot water pressure pump, and closing the flushing valve 2 and stopping the hot water pressure pump when the hot water fills the whole coarse selenium filter cake bag.
S3, soaking and washing the crude selenium filter cake in the crude selenium filter cake bag in hot water.
And S4, opening the total liquid return valve 5, simultaneously opening the liquid mixing valve 4 and the flushing valve 2, and pumping hot water to flush the crude selenium filter cake.
S5, repeating the steps of S1-S4.
And S6, opening a compressed air valve 3 and air-drying the crude selenium filter cake through compressed air.
The hot water temperature used in S2-S5 is 75 ℃, the soaking and washing time of the crude selenium filter cake in the hot water in S3 is 30 minutes, and the pumping hot water in S4 washes the crude selenium filter cake for 2 minutes.
In this embodiment: after the crude selenium in the same batch is washed by different methods, the advantages of the two-bubble two-washing method washing filter press can be obviously seen through analysis of assay data and comparison of washing water quantity, the average value is obtained after the inspection and the assay are carried out for a plurality of times according to the method, and the specific reference parameters are shown in the following table 1:
TABLE 1 analysis of crude selenium and the amount of rinsing water
The taste of the crude selenium is stably kept at 90 percent or above by a 'two-bubble two-flushing' method, and the consumption of flushing water is reduced to 68.8 percent of the original flushing water.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and implementations of the embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only used to help understand the principles of the embodiments of the present invention, and meanwhile, for a person of ordinary skill in the art, according to the embodiments of the present invention, there may be changes in the specific implementations and the application ranges, and in summary, the contents of the present description should not be understood as limiting the present invention.
Claims (5)
1. The utility model provides a coarse selenium pressure filter washing unit of kaerdo stove system, includes feed valve (1), flush valve (2), compressed air valve (3) and liquid valve (4), total return liquid valve (5) and pressure filter (6), its characterized in that: the filter press (6) comprises a coarse selenium filter cake bag, the feeding valve (1), the compressed air valve (3), the liquid merging valve (4) and the main liquid returning valve (5) are connected in series through a circuit, the inlet of the flushing valve (2) is connected with a hot water pressure pump, and the main liquid returning valve (5), the flushing valve (2) and the liquid merging valve (4) are connected in series through a circuit.
2. The method for washing the crude selenium filter press of the Kaldo furnace system according to claim 1, characterized in that it comprises the following steps:
and S1, opening the feeding valve (1) to feed the filter press (6), and closing the feeding valve (1) when the feeding pressure of the filter press (6) reaches 5 kilograms.
And S2, opening the flushing valve (2) and starting a hot water pressure pump, pumping hot water into the filter press (6) through the hot water pressure pump, and closing the flushing valve (2) and stopping the operation of the hot water pressure pump when the whole coarse selenium filter cake bag is filled with the hot water.
S3, soaking and washing the crude selenium filter cake in the crude selenium filter cake bag in hot water.
And S4, opening a total liquid return valve (5), simultaneously opening a liquid mixing valve (4) and a flushing valve (2), and pumping hot water to flush the crude selenium filter cake.
S5, repeating the steps of S1-S4.
And S6, opening a compressed air valve (3) and air-drying the crude selenium filter cake through compressed air.
3. The method for washing the crude selenium filter press of the Kaldo furnace system according to claim 2, wherein: the hot water temperature used in the S2-S5 was 75 ℃.
4. The method for washing the crude selenium filter press of the Kaldo furnace system according to claim 2, wherein: the soaking and washing time of the crude selenium filter cake in the S3 in hot water is 30 minutes.
5. The method for washing the crude selenium filter press of the Kaldo furnace system according to claim 2, wherein: the time for pumping hot water to wash the crude selenium filter cake in the S4 is 2 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110960968.9A CN113713449A (en) | 2021-08-20 | 2021-08-20 | Washing device and washing method for crude selenium filter press of Kaldo furnace system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110960968.9A CN113713449A (en) | 2021-08-20 | 2021-08-20 | Washing device and washing method for crude selenium filter press of Kaldo furnace system |
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| Publication Number | Publication Date |
|---|---|
| CN113713449A true CN113713449A (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110960968.9A Pending CN113713449A (en) | 2021-08-20 | 2021-08-20 | Washing device and washing method for crude selenium filter press of Kaldo furnace system |
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| Country | Link |
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| CN (1) | CN113713449A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0759318A1 (en) * | 1995-08-16 | 1997-02-26 | MUT Miljoevern-Umwelt-Technik GmbH | Process for demoisturizing and drying solids/liquid mixtures and apparatus for carrying out the process |
| EP2002873A1 (en) * | 2007-06-08 | 2008-12-17 | Tronox Pigments GmbH | Method of filtration and filtering device |
| CN102872621A (en) * | 2012-10-29 | 2013-01-16 | 无锡恒诚硅业有限公司 | Press filtering washing water recycling and utilizing system for producing white carbon black |
| CN107837577A (en) * | 2017-11-30 | 2018-03-27 | 新疆中泰化学阜康能源有限公司 | A kind of apparatus and method for reducing carbide slag water content |
| JP2020082028A (en) * | 2018-11-30 | 2020-06-04 | 株式会社石垣 | Washing method of dewatered cake in filter press |
| CN211486685U (en) * | 2019-12-03 | 2020-09-15 | 河南骏化发展股份有限公司 | Device for washing and drying precipitated white carbon black product by using filter press |
| CN212016870U (en) * | 2020-05-06 | 2020-11-27 | 四川久远环境技术有限公司 | Cleaning system for plate-and-frame filter press |
-
2021
- 2021-08-20 CN CN202110960968.9A patent/CN113713449A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0759318A1 (en) * | 1995-08-16 | 1997-02-26 | MUT Miljoevern-Umwelt-Technik GmbH | Process for demoisturizing and drying solids/liquid mixtures and apparatus for carrying out the process |
| EP2002873A1 (en) * | 2007-06-08 | 2008-12-17 | Tronox Pigments GmbH | Method of filtration and filtering device |
| CN102872621A (en) * | 2012-10-29 | 2013-01-16 | 无锡恒诚硅业有限公司 | Press filtering washing water recycling and utilizing system for producing white carbon black |
| CN107837577A (en) * | 2017-11-30 | 2018-03-27 | 新疆中泰化学阜康能源有限公司 | A kind of apparatus and method for reducing carbide slag water content |
| JP2020082028A (en) * | 2018-11-30 | 2020-06-04 | 株式会社石垣 | Washing method of dewatered cake in filter press |
| CN211486685U (en) * | 2019-12-03 | 2020-09-15 | 河南骏化发展股份有限公司 | Device for washing and drying precipitated white carbon black product by using filter press |
| CN212016870U (en) * | 2020-05-06 | 2020-11-27 | 四川久远环境技术有限公司 | Cleaning system for plate-and-frame filter press |
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Application publication date: 20211130 |