What causes filter iron powder not to unload

1. It may be the fault of filtrate pump, the diaphragm of the pump is damaged, the mechanical seal of the pump is invalid, one is leakage, the other is no liquid output or weak output, the pressure is too low, the cleaning effect is not good, the pressure is too high, the filter plate will be damaged and the slurry concentration will be reced. The recoil water pressure is regulated by pump circuit valve and pressure regulating valve. In order to avoid too frequent pressure fluctuation and pressure fluctuation in a short time, there is a buffer cylinder in the backwash water pipeline to stabilize the pressure.

2. This may be the mechanical jam or the belt does not rotate, causing it not to unload ore.

3.

You should make it clear whether the filter cake has not dried all the time or suddenly. How much moisture is there now? Generally, the water content of filter cake is about 10% when iron powder is filtered by ceramic filter. The reasons that affect the high water content of filter cake may be as follows:

1. The external reasons of ceramic filter

1. the change of ore feeding conditions, such as the extremely high concentration of incoming material, the finer particle size, the more mud content, etc
   

< / OL >

Second, the main shaft speed of ceramic filter is too fast

The vacuum degree of ceramic filter is insufficient

2. ceramic filter cleaning does not meet the requirements

3. ceramic filter plate has nearly life and serious blockage

4. the selection of ceramic filter plate is inconsistent

5. there is too much resie after discharging the ceramic scraper

4.

It should be noted that the effect is very poor if the slurry is not sucked suddenly or all the time

If the slurry is not sucked suddenly, the possible reasons are as follows:

1. vacuum system failure, no vacuum or vacuum degree can not meet the requirements. Should check the vacuum pump and vacuum pipeline, distribution head, ceramic plate and other places for failure or leakage

2. whether ore feeding conditions change, such as pulp type, mud content, fineness, concentration, etc

3. when the machine is started up after the combined cleaning, the slurry absorption effect may be good within 0-2 hours, it may decrease slightly within 2-4 hours, and it will get worse and worse after 4 hours, even no slurry absorption. In this case, first check whether the backwashing water pressure (the highest instantaneous water pressure should not be less than 0.08mpa) meets the requirements, shut down the machine in advance for joint cleaning (to ensure normal ultrasound and sufficient nitric acid consumption) and extend the joint cleaning time

4. check the filtrate discharge

   The most likely reason is that you don't know, Juxian doesn't avoid relatives:

   

5. of course, with the aging of machines and ceramic plates, the slurry absorption effect will graally decrease

   you are welcome to communicate more. You can chat with me or see my head picture for other questions about ceramic filter

< / OL >

in case of poor pulp absorption effect and no pulp absorption, the reasons should be found out in time to solve the problem

5. The most possible reason is that the material temperature is too high and the magnet loses excitation. Just magnetize it.

6.

In general, the vacuum degree of ceramic filter is about -0.08mpa, which is enough. Sufficient vacuum pressure is only the premise of good slurry absorption effect of ceramic plate. In addition to the influence of vacuum on slurry absorption effect, there are other factors that may affect it:

1. the vacuum display meter fails, and the displayed value is quite different from the actual data

2. ceramic filter plate

   if the ceramic filter plate is blocked or the type selection is inconsistent, the porosity of the new plate is generally about 40%. If the ceramic filter plate has been blocked, the opening rate will become less. When it becomes 30%, the slurry absorption effect may be slightly worse than that of the new plate. When the ceramic filter plate is used for a long time, the opening rate may become 10% or even less. At this time, the slurry absorption effect of the ceramic filter plate will become very poor or even no slurry absorption. At this time, even if the vacuum suction is no longer good, it is necessary to replace the new ceramic filter plate

   how to find the most suitable ceramic filter plate for their own pulp, it is best to try more

3. e to the high mud content and fine particle size of the incoming material, the slurry itself is not suitable for dewatering by ceramic filter. If the ceramic filter is used for dewatering in this case, the blocking of ceramic filter plate will be accelerated. Refer to the description in article 2 for the situation after blocking

4. the filtrate is not discharged smoothly

   if the filtrate can't be discharged smoothly and timely, the new filtrate can't be sucked out. If the filtrate can't be sucked out continuously, no filter cake will be adsorbed on the ceramic plate

5. the spindle speed is too fast

   The rotating speed is too fast to absorb the cake
   There are other possible reasons

7.

Generally speaking, the main reason why the thickness of ceramic filter cake is different is that the old and new degree of ceramic filter plate is different. Because the vacuum suction of ceramic filter, backwash water, nitric acid, etc. are all through the distribution valve, it is often "all win and all lose". When I see your description, I don't know whether the five lines you mentioned mean five discs or five rows of ceramic plates. At that time, there was no pulp suction at all or the effect of pulp suction was poor. I hope my answer is helpful to you:

1. analysis of five discs without pulp suction

   large ceramic filters generally have vacuum tanks at both ends, If 50 M2 ceramic filter is combined with 5 m2 / circle ceramic filter plate (possible), there are 10 discs. The left vacuum tank is responsible for filtering the ceramic plates of the left 5 discs, and the right vacuum tank is responsible for filtering the ceramic plates of the right 5 discs. If the vacuum system of a transformer breaks down temporarily, it may lead to poor slurry suction effect on one side or even no slurry suction and normal operation on the other side

2. there are five rows of ceramic plates across the ceramic filter without slurry absorption

   
   

   the figure above is the schematic diagram of the distribution valve. Coincidentally, the distribution friction ring (right figure) of the distribution valve of the ceramic filter just has a section (the small long section on the right figure) which is the same length as the five continuous small holes of the friction ring, The small and long section is just the stage of filter cake formation in the working process of ceramic filter plate in pulp. If there is a fault in this stage (such as temporary fault in connecting pipeline, distribution system or ceramic filter plate), the filter cake can not be formed at this stage. After turning up, there will be five rows of ceramic plates that do not suck pulp. The specific temporary fault can be determined by oneself

3. in addition, after the normal start-up, the local ceramic filter plate does not absorb slurry or the effect is poor. On the one hand, it is the problem of ceramic filter, on the other hand, it is the problem of ore feeding

   the main problems of ceramic filter are ceramic filter plate and vacuum system. The main problems of ceramic filter plate are the different old and new degree of ceramic plate and the different pore sizes of procts from different manufacturers; The vacuum components and pipes can be checked step by step for vacuum system problems

   The distribution of ore concentration, fineness and pulp concentration in the tank are different

   ceramic filter has multiple systems, so it is easy to have such and such unknown problems. Fortunately, it is good again

4. when the user increases the feeding capacity and wants to improve the processing capacity of ceramic filter, the unknown influencing factors are most likely to appear: for example, after the concentration is increased, the slurry is easy to precipitate and is not easy to stir up, which will accelerate the abrasion, even deformation and fracture of mixing palladium, and even cause the whole worktable to vibrate or even not stir

   above is where I want to go. This is a brick thrown out, hoping to bring back a piece of jade! Focus on many years, welcome more questions ceramic filter

8. Generally, iron powder is filtered by filter, and the moisture content of filter cake is about 10%. Iron powder can be detected by the following reasons:
the reasons that affect the high water content of filter cake are as follows:
first, the external reasons of filter
the change of ore feeding conditions, such as the extremely high concentration of incoming material, the finer particle size, the more mud content, etc< Second, the main shaft speed of the filter is too fast
the vacuum degree of the filter is insufficient
the filter cleaning did not meet the requirements
the life of the filter plate is near and the blockage is serious
the selection of filter plate is inconsistent
the above contents can provide reference for Yantai new Xiangyu.

9. Main ingredient: appropriate amount of glutinous rice method / step 1: wash the glutinous rice, just after adding water, soak it for more than 4 hours. 2. Drain the water, add all seasonings and all kinds of auxiliary materials cut into small cubes, mix well, refrigerate overnight, and taste better. 3. Split the bamboo tube with a knife. 4. Each bamboo tube is different. Pay attention to pairing. Tie the lower end of each pair tightly with cotton thread. 5. Put the soaked materials into the bamboo tube with a small spoon, Pay attention to tap the bamboo tube, so that the rice is tight, until it is fully filled. 6. Wrap the opening of the bamboo tube with rice mpling leaves, tie tightly with cotton thread. 7. Put the bamboo tube into the pressure cooker with good water. 8. Put the steam pressure valve on the pressure cooker for 30 minutes

10. Generally, the water content of filter cake is about 10% when iron powder is filtered by ceramic filter. The reasons that affect the high water content of filter cake may be as follows:
first, the external reasons of ceramic filter
the change of ore feeding conditions, such as high incoming material concentration, fine particle size, increased sludge content, etc< Second, the main shaft speed of ceramic filter is too fast
the vacuum degree of ceramic filter is insufficient
the cleaning of ceramic filter did not meet the requirements
the life of ceramic filter plate is near and the blockage is serious
the selection of ceramic filter plate is inconsistent
there are too many resies after discharging.