CN212016870U - Cleaning system for plate-and-frame filter press - Google Patents
Cleaning system for plate-and-frame filter press Download PDFInfo
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- CN212016870U CN212016870U CN202020722568.5U CN202020722568U CN212016870U CN 212016870 U CN212016870 U CN 212016870U CN 202020722568 U CN202020722568 U CN 202020722568U CN 212016870 U CN212016870 U CN 212016870U
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Abstract
The application provides a cleaning system for plate and frame filter press, aim at solve current plate and frame filter press after the filter-pressing, have more thick liquids of remaining on the feed inlet, when unloading the board, wet thick liquids on the feed inlet can drip to the band conveyer of filter press below on, lead to operational environment sanitary condition relatively poor, and influence the problem of the moisture content of filter cake. The filter press comprises a filter press body, a feeding unit, a compressed air unit, an air inlet branch pipe and a backwashing unit, wherein the filter press body is respectively provided with a feeding hole, a backwashing hole and a filtrate outlet. This application can blow out the thick liquids that remain in the feed inlet, improves the dehydration efficiency of material, improves operational environment sanitary condition. Simultaneously, this application can effectively prevent feeding unit jam, extension fixture's life through the improvement to the structure. The slurry residue problem of the feed inlet of the plate and frame filter press can be effectively solved, and the slurry residue device has high application value.
Description
Technical Field
The utility model belongs to the technical field of the chemical industry and specifically relates to a cleaning system for plate and frame filter press is handled in the material field.
Background
The plate-and-frame filter press is an ideal device for separating solid and liquid phases of suspension, has the characteristics of lightness, sensitivity, firmness and the like, and is widely applied to the industries of chemical industry, ceramics, petroleum, medicines, food, smelting and the like. The plate-and-frame filter press belongs to horizontal filter pressing equipment, and can be structurally divided into a frame, a filtering structure and a pressing structure. In the existing plate-and-frame filter press, through holes are arranged at four corners of a filter plate, and feeding is carried out through the center of the filter plate; after the filter pressing is finished, more residual slurry is arranged on the feeding hole; when unloading the board, wet thick liquids on the feed port can drip to the band conveyer of pressure filter below on, lead to operational environment sanitary conditions relatively poor, and influence the moisture content of filter cake.
In order to solve the problem of cleaning of the plate and frame filter press, the chinese patent application CN201721866287.1 discloses a vibratable plate and frame filter press cleaning device, which comprises two bases, two brackets respectively mounted on the bases, and a support plate connected to the top ends of the two brackets; the supporting plate is provided with a power device, and an electric hydraulic telescopic rod is connected below the power device; the lower end of the electric hydraulic telescopic rod is connected with a fixed plate, two cleaning plates are installed at two ends of the fixed plate, and a vibration motor is installed on the outer surfaces of the two cleaning plates. In the structure, the filter plate is vibrated and cleaned by utilizing vibration of the vibration motor and high-pressure water flow.
Chinese patent application CN201820999139.5 discloses an online cleaning device of plate and frame filter press, including the cleaner storage tank, the cleaner is thrown and is added the pump, the waste liquid collecting pit, the cleaner is thrown and is added the pump import and be connected with the cleaner storage tank through the liquid inlet pipeline, the export is connected with plate and frame filter press through the liquid outlet pipeline, be equipped with the feed liquor valve on the feed liquor pipeline, be equipped with the pressure detection unit who is used for detecting plate and frame filter press's plate and frame filter press internal pressure on the drain pipe road, be equipped with the return line between cleaner storage tank and the plate and frame filter press, be equipped with pressure regulating valve on the return line, the waste liquid collecting. In this structure, through online chemical agent washing soaking to improve the cleaning performance of plate and frame filter press.
Chinese patent application CN201920018569.9 discloses a filter cloth cleaning device for a plate and frame filter press, which is used for cleaning the filter cloth arranged on the frame, and comprises a brush plate provided with a plurality of pairs of bearing seats, a hollow sleeve provided with a brush head at the end part, a plurality of high-pressure cleaning nozzles respectively arranged in the sleeve and a driven gear driven by a driving motor, wherein the two ends of each sleeve are respectively arranged on a pair of bearing seats, and the driven gear is sleeved on the sleeve between the two bearing seats.
Chinese patent application CN201620262522.3 discloses a dynamic online cleaning device for filter cloth of a plate-and-frame filter press, which comprises an acid inlet, an acid inlet valve, a circulating acid outlet, an acid outlet and an acid outlet valve, wherein the acid inlet and the circulating acid outlet are communicated through a circulating acid pump and a circulating valve, the acid inlet valve, the acid outlet valve, a filtrate outlet of a plate-and-frame group of the plate-and-frame filter press and a valve on a mud inlet are controlled to enable the squeezed plate-and-frame group to form an acid liquid flowing loop, when the acid liquid fills a closed cavity formed by the plate-and-frame group, a certain pressure is kept, under the driving of the circulating acid pump, the acid liquid in the closed cavity of the plate-and-frame group keeps a circulating flowing state, so that the acid liquid can keep a certain flow rate to dissolve and impact scales on the filter cloth on the plate-and-frame group, and the scales on the filter cloth can fall from the surface of the filter cloth without being completely, the time needs to be less, the efficiency is high, and thus the problem that one day is needed for cleaning the filter cloth through soaking in the prior art is solved.
Chinese patent application CN201120439445.1 discloses an automatic water cleaning device for plate and frame filter press, including: a pulley track, a pulley, a portal frame and a flushing device; the portal frame is fixedly connected with the bottom of the pulley and moves back and forth along the pulley track together with the pulley; and the flushing device moves up and down along the tracks in the two door frames of the portal frame. In the structure, the height of the automatic water cleaning device is reduced based on the improvement of the structure, so that the height of the whole machine is reduced.
However, most of the existing plate frame cleaning equipment cleans the whole plate frame, and a device which does not solve the problems or a corresponding device has a too complex structure and is high in cost. For this reason, a new apparatus is urgently needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: to current plate and frame filter press after the filter-pressing, have more thick liquids of remaining on the feed port, when unloading the board, wet thick liquids on the feed port can drip to the band conveyer of filter press below on, lead to operational environment sanitary condition relatively poor, and influence the problem of the moisture content of filter cake, provide a cleaning system for plate and frame filter press. By adopting the device and the method, the slurry remained in the feed inlet can be blown out, the dehydration efficiency of the material is improved, and the working environment sanitary condition is improved. Simultaneously, this application can effectively prevent feeding unit jam, extension fixture's life through the improvement to the structure. The slurry residue problem of the plate and frame filter press feed hole can be effectively solved, and the slurry residue problem has high application value.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a cleaning system for a plate-and-frame filter press comprises a filter press body, a feeding unit, a compressed air unit, an air inlet branch pipe and a backwashing unit, wherein the filter press body is respectively provided with a feeding hole, a back blowing hole and a filtrate outlet;
the feeding unit comprises a material preparation tank, a first feeding pipe section, a first valve, a feeding pump and a second feeding pipe section, the material preparation tank is connected with the first valve through the first feeding pipe section, the first valve is connected with a feeding port of the filter press body through the second feeding pipe section, materials in the material preparation tank can be sequentially conveyed into the filter press body through the first feeding pipe section, the first valve and the second feeding pipe section to be processed, the feeding pump is arranged on the first feeding pipe section and can provide power for conveying the materials in the material preparation tank to the filter press body;
the compressed air unit comprises an air source, a first air inlet pipe section, a third valve and a second air inlet pipe section, wherein the air source is connected with the third valve through the first air inlet pipe section, and the third valve is connected with a back blowing port of the filter press body through the second air inlet pipe section;
the two ends of the air inlet branch pipe are respectively connected with the second air inlet pipe section and the first air inlet pipe section, compressed air in an air source can sequentially enter the feed port of the filter press body through the first air inlet pipe section, the air inlet branch pipe and the second air inlet pipe section and can blow out residual materials in the feed port, and the air inlet branch pipe is provided with a second valve;
the back washing unit comprises a water storage tank, a back washing water pipe, a high-pressure pump and a fourth valve, the water storage tank is connected with the first feeding pipe section through the back washing water pipe, the high-pressure pump and the fourth valve are respectively arranged on the back washing water pipe, and the high-pressure pump can send liquid in the water storage tank into the first feeding pipe section through the back washing water pipe and wash the first feeding pipe section and the feeding pump.
And the filter press also comprises a filtrate pipe connected with the filtrate outlet of the filter press body.
The joint of the backwash water pipe and the first feeding pipe section is marked as a first joint, and the fourth valve is located between the high-pressure pump on the backwash water pipe and the first joint.
The first valve, the second valve, the third valve and the fourth valve are electric regulating valves respectively.
The device also comprises a control system, wherein the control system is respectively connected with the feeding pump, the air source, the high-pressure pump, the first valve, the second valve, the third valve and the fourth valve.
The air source comprises an air compressor and an air storage tank connected with the air compressor, and the air storage tank is connected with the first air inlet pipe section.
The air compressor is connected with the control system.
In view of the foregoing, the present application provides a cleaning system for a plate and frame filter press.
As mentioned above, in the existing plate and frame filter press, more slurry is left in the feed hole; when unloading the board, wet thick liquids on the feed port can drip to the band conveyer of pressure filter below on, lead to operational environment sanitary conditions relatively poor, influence the moisture content of filter cake. Meanwhile, in practice, the inventor finds that when the solid content of the slurry entering the plate-and-frame filter press for treatment is high, the slurry with high solid content can remain in the feeding pipeline and the equipment during the shutdown maintenance or the filter cloth replacement of the plate-and-frame filter press, and the feeding pipeline and the equipment of the plate-and-frame filter press are often blocked. In response to these problems, by providing a new cleaning apparatus, it is not a problem to solve the aforementioned problems. However, in the industrial field, how to improve equipment with low cost and smaller size to solve the aforementioned problems has the value of industrial application, and can be widely popularized and applied. To this end, the present application provides a cleaning system for a plate and frame filter press to address the aforementioned problems.
The cleaning system comprises a filter press body, a feeding unit, a compressed air unit, an air inlet branch pipe and a backwashing unit, wherein the filter press body is provided with a feeding hole, a backwashing hole and a filtrate outlet. In the application, the feeding unit is used for feeding materials into the filter press body so as to realize filter pressing operation; the compressed air unit is used for carrying out back flushing treatment on filter residues in the filter press body; the air inlet branch pipe is matched with the second valve and is used for cleaning a feed port of the filter press body; the back washing unit is used for blocking pipelines and equipment of the feeding unit.
The feeding unit comprises a material preparation tank, a first feeding pipe section, a first valve, a feeding pump and a second feeding pipe section, the material preparation tank is connected with the first valve through the first feeding pipe section, the first valve is connected with a feeding port of the filter press body through the second feeding pipe section, the feeding pump is arranged on the first feeding pipe section, and power is provided for the filter press body through the feeding pump to convey materials in the material preparation tank. The compressed air unit comprises an air source, a first air inlet pipe section, a third valve and a second air inlet pipe section, the air source is connected with the third valve through the first air inlet pipe section, and the third valve is connected with a back blowing port of the filter press body through the second air inlet pipe section. In this application, the air supply includes the air compressor machine, the gas holder that links to each other with the air compressor machine, and the gas holder links to each other with first intake pipe section. Meanwhile, two ends of the air inlet branch pipe are respectively connected with the second feeding pipe section and the first air inlet pipe section, and a second valve is arranged on the air inlet branch pipe. In this application to the air supply of compressed air unit is power, through setting up air intake branch, second valve to cooperation first valve, third valve, in order to realize the washing to the pressure filter body feed inlet. The back washing unit comprises a water storage tank, a back washing water pipe, a high-pressure pump and a fourth valve, wherein the water storage tank is connected with the first feeding pipe section through the back washing water pipe, and the high-pressure pump and the fourth valve are respectively arranged on the back washing water pipe.
By adopting the structure, the feeding process of the plate-and-frame filter press is as follows: the second valve, the third valve and the fourth valve are closed, the first valve is opened, and the materials in the material preparation tank are sequentially conveyed into the filter press body through the first feeding pipe section, the first valve and the second feeding pipe section to be subjected to filter pressing treatment;
the cleaning process of the feed inlet of the filter press body is as follows: the first valve, the third valve and the fourth valve are closed, the second valve is opened, the air compressor provides high-pressure gas into the gas storage tank, the high-pressure gas in the gas storage tank sequentially enters the feed port of the filter press body through the first gas inlet pipe section, the gas inlet branch pipe and the second feed pipe section, and can blow out residual materials in the feed port, so that the cleaning operation of the feed port of the filter press body is realized;
the back blowing process of the plate-and-frame filter press is as follows: the first valve, the second valve and the fourth valve are closed, the third valve is opened, the air compressor provides high-pressure gas into the air storage tank, and the high-pressure gas in the air storage tank sequentially enters the back-blowing air inlet of the filter press body through the first air inlet pipe section, the third valve and the second air inlet pipe section, so that the back-blowing operation of the filter press body is realized;
the backwash process of the feed unit was as follows: the first valve, the second valve and the third valve are closed, the fourth valve is opened, liquid in the water storage tank is conveyed into the first feeding pipe section through the back flushing water pipe by the high-pressure pump, the first feeding pipe section and the feeding pump are flushed, the back flushing operation of the feeding unit is completed, and the pipeline and equipment blockage of the feeding unit in the plate and frame filter press is effectively avoided.
By adopting the device and the method, the slurry remained in the feed inlet can be blown out, the dehydration efficiency of the material is improved, and the working environment sanitary condition is improved. Simultaneously, this application sets up back flush unit, can carry out the back flush to the feed unit when the shutdown is overhauld, prevents that the feed unit from blockking up, delays the pipeline corrosion of feed unit, prolongs the life of equipment.
Simultaneously, this application still includes the filtrate pipe that links to each other with the filtrating discharge port of pressure filter body. The device further comprises a control system, wherein the first valve, the second valve, the third valve and the fourth valve are respectively electric regulating valves, and the control system is respectively connected with the feeding pump, the air source, the high-pressure pump, the first valve, the second valve, the third valve and the fourth valve. In this application, through charge pump, air supply, high-pressure pump, first valve, second valve, third valve, fourth valve and control system's linkage, realize cleaning system's automation mechanized operation, promote the operating efficiency of equipment by a wide margin.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
(1) according to the filter press, the air inlet branch pipe and the second valve are arranged and matched with the air source, the first valve and the third valve, slurry remained in the feed inlet can be blown out, the dehydration efficiency of the material is improved, and the water content of the dehydrated material is reduced by 3% -5% compared with that of the traditional plate-and-frame filter press; meanwhile, by adopting the method, the working environment sanitary condition can be improved;
(2) the back washing unit is added, so that the feeding unit can be back washed when the production is stopped for maintenance, the feeding unit is prevented from being blocked, the corrosion of a pipeline in the feeding unit is delayed, and the service life of equipment is prolonged;
(3) the plate and frame filter press has the advantages of ingenious design, reasonable design, simple structure and strong operability, changes of the existing plate and frame filter press are small, the plate and frame filter press has good adaptability and high application value, the requirements of industrial application can be met, and the plate and frame filter press is popularized and applied on a large scale.
Drawings
Fig. 1 is a schematic structural view of a cleaning system for a plate-and-frame filter press in example 1.
The labels in the figure are: 1. the filter press comprises a filter press body, 2, a filter liquor pipe, 3, an air inlet branch pipe, 4, a second valve, 11, a material preparation tank, 12, a feeding pump, 13, a first feeding pipe section, 14, a second feeding pipe section, 15, a first valve, 21, an air compressor, 22, an air storage tank, 23, a first air inlet pipe section, 24, a second air inlet pipe section, 25, a third valve, 31, a water storage tank, 32, a high-pressure pump, 33, a back flush water pipe, 34 and a fourth valve.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in the figure, the cleaning system of the embodiment comprises a filter press body, a feeding unit, a compressed air unit, an air inlet branch pipe and a back washing unit. Wherein, the filter press body is respectively provided with a feed inlet, a reverse blowing port and a filtrate outlet.
The feeding unit comprises a material preparation tank, a first feeding pipe section, a first valve, a feeding pump and a second feeding pipe section, the material preparation tank is connected with the first valve through the first feeding pipe section, the first valve is connected with a feeding port of the filter press body through the second feeding pipe section, and the feeding pump is arranged on the first feeding pipe section. By adopting the structure, materials in the material preparation tank are conveyed into the filter press body through the first feeding pipe section and the second feeding pipe section in sequence under the driving of the feeding pump, and are subjected to filter pressing treatment.
The compressed air unit comprises an air source, a first air inlet pipe section, a third valve and a second air inlet pipe section. In this embodiment, the air supply includes the air compressor machine, the gas holder that links to each other with the air compressor machine, and the gas holder links to each other with the third valve through first gas inlet pipe section, and the third valve links to each other with the blowback mouth of pressure filter body through the second gas inlet pipe section. By adopting the structure, the air compressor charges compressed gas into the gas storage tank, and the compressed gas enters the back-blowing air port of the filter press body through the first gas inlet pipe section, the third valve and the second gas inlet pipe section in sequence so as to back-blow the filter press body.
In this embodiment, an individual air inlet branch pipe is provided, two ends of the air inlet branch pipe are respectively connected with the second feeding pipe section and the first air inlet pipe section, and a second valve is arranged on the air inlet branch pipe. The back washing unit comprises a water storage tank, a back washing water pipe, a high-pressure pump and a fourth valve, wherein the water storage tank is connected with the first feeding pipe section through the back washing water pipe, and the high-pressure pump and the fourth valve are respectively arranged on the back washing water pipe. In this embodiment, the first valve, the second valve, the third valve, and the fourth valve are respectively electric control valves, and the feeding pump, the air source, the high-pressure pump, the first valve, the second valve, the third valve, and the fourth valve are respectively connected to the control system. Further, the cleaning system of the present embodiment further includes a filtrate pipe connected to the filtrate discharge port of the filter press body.
In the application, a plate-and-frame filter press is taken as a basis, and through the improvement of the structure, slurry remained in a feed inlet can be blown out, so that the dehydration efficiency of materials is improved, and the working environment sanitary condition is improved; meanwhile, the back washing unit can be used for back washing the feeding unit during production stoppage and maintenance, so that the pipeline of the feeding unit is prevented from being blocked, the corrosion of the pipeline of the feeding unit is delayed, and the service life of equipment is prolonged.
The present example was used in a chromium-containing treatment project to separate chromium slag from solid after detoxification. The system is divided into a working state and a shutdown maintenance state;
wherein, its operating condition is as follows: feeding the detoxified chromium slag slurry into a stock tank, starting a plate-and-frame filter press to compress a filter plate and a filter frame, and keeping the pressure in a pressure maintaining state; then, starting a feed pump, opening a first valve, closing the other valves, conveying the chromium slag slurry into a filter press through a first feed pipe section and a second feed pipe section, carrying out solid-liquid separation, and discharging filtrate through a filtrate pipe; after the feeding is finished, closing the first valve and stopping the feeding pump; starting the air compressor, starting a second valve, allowing compressed air to enter a feed port of the filter press through the first air inlet pipe section, the air inlet branch pipe and the second feed pipe section, and blowing out residual slurry in the feed port; then, closing the second valve, opening the third valve, allowing compressed air to sequentially enter the filter press through the first air inlet pipe section, the second air inlet pipe section and the back blowing port, and further dehydrating and drying the filter cake, wherein the pressure of the compressed air is 0.2-0.4 MPa; after the back flushing lasts for 10-15 min, closing a third valve and an air compressor, and unloading by using a filter press, wherein the water content of the separated chromium cake is 27% -28%, and is reduced by 3% -5% compared with that of the traditional plate-and-frame filter press;
and (3) shutdown maintenance state: when the filter press needs to be stopped for maintenance, the high-pressure pump is started, the fourth valve is opened, the other valves are in a closed state, the high-pressure pump enables clean water in the water storage tank to carry out back flushing on the first feeding pipe section through the back flushing water pipe, and back flushing water and slurry remained in the first feeding pipe section return to the material preparing tank together.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A cleaning system for a plate-and-frame filter press is characterized by comprising a filter press body, a feeding unit, a compressed air unit, an air inlet branch pipe and a backwashing unit, wherein the filter press body is respectively provided with a feeding hole, a back blowing hole and a filtrate outlet;
the feeding unit comprises a material preparation tank, a first feeding pipe section, a first valve, a feeding pump and a second feeding pipe section, the material preparation tank is connected with the first valve through the first feeding pipe section, the first valve is connected with a feeding port of the filter press body through the second feeding pipe section, materials in the material preparation tank can be sequentially conveyed into the filter press body through the first feeding pipe section, the first valve and the second feeding pipe section to be processed, the feeding pump is arranged on the first feeding pipe section and can provide power for conveying the materials in the material preparation tank to the filter press body;
the compressed air unit comprises an air source, a first air inlet pipe section, a third valve and a second air inlet pipe section, wherein the air source is connected with the third valve through the first air inlet pipe section, and the third valve is connected with a back blowing port of the filter press body through the second air inlet pipe section;
the two ends of the air inlet branch pipe are respectively connected with the second air inlet pipe section and the first air inlet pipe section, compressed air in an air source can sequentially enter the feed port of the filter press body through the first air inlet pipe section, the air inlet branch pipe and the second air inlet pipe section and can blow out residual materials in the feed port, and the air inlet branch pipe is provided with a second valve;
the back washing unit comprises a water storage tank, a back washing water pipe, a high-pressure pump and a fourth valve, the water storage tank is connected with the first feeding pipe section through the back washing water pipe, the high-pressure pump and the fourth valve are respectively arranged on the back washing water pipe, and the high-pressure pump can send liquid in the water storage tank into the first feeding pipe section through the back washing water pipe and wash the first feeding pipe section and the feeding pump.
2. The cleaning system of claim 1, further comprising a filtrate line connected to the filtrate discharge of the filter press body.
3. The cleaning system of claim 1, wherein the connection of the backwash water pipe to the first feed pipe section is denoted as a first connection, and the fourth valve is located between the high pressure pump on the backwash water pipe and the first connection.
4. The cleaning system according to any one of claims 1 to 3, wherein the first valve, the second valve, the third valve and the fourth valve are each an electrically operated control valve.
5. The cleaning system of claim 4, further comprising a control system coupled to the feed pump, the gas source, the high pressure pump, the first valve, the second valve, the third valve, and the fourth valve, respectively.
6. The cleaning system of claim 5, wherein the air source comprises an air compressor, and an air reservoir coupled to the air compressor, the air reservoir coupled to the first air inlet section.
7. The cleaning system of claim 6, wherein the air compressor is coupled to a control system.
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| CN202020722568.5U CN212016870U (en) | 2020-05-06 | 2020-05-06 | Cleaning system for plate-and-frame filter press |
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| CN202020722568.5U CN212016870U (en) | 2020-05-06 | 2020-05-06 | Cleaning system for plate-and-frame filter press |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113713449A (en) * | 2021-08-20 | 2021-11-30 | 白银有色集团股份有限公司 | Washing device and washing method for crude selenium filter press of Kaldo furnace system |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113713449A (en) * | 2021-08-20 | 2021-11-30 | 白银有色集团股份有限公司 | Washing device and washing method for crude selenium filter press of Kaldo furnace system |
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