Continuous output method for crystallized materials
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The factory now plans to change the crystallization method to a continuous crystallization approach, which requires the addition of equipment for discharging the product obtained through continuous crystallization. I would like to ask if any of you have relevant experience in this area. It is connected to the bottom of the crystallization tank to transport the slurry to the filtration tank, and good sealing performance is required. What form of transportation is generally used? Is it done using a pump, a screw conveyor, or some other method of transportation? Thank you!
What is the state of the slurry? Is it high in water content? Does it have good flowability? From your description of sending the slurry to the filtration tank, it seems to be an aqueous solution, right? Solutions containing water are not suitable for screws; screws can be considered, but it’s difficult to determine. I’m not very familiar with pumps, so I can’t give an evaluation.
It’s not easy to determine; it requires considering factors such as the crystal structure, moisture content, and flow characteristics. Generally, materials with a certain degree of fluidity can be transported using methods such as gravity flow, pressure feeding, centrifugal pumps, or screw pumps, with the choice of method depending on the specific conditions
Rotary pumps and screw pumps can be considered
Our factory uses U-shaped screw conveyors; if you require better sealing, cylindrical screw conveyors are also an option
Screw pump – take a look to see if it’s suitable for the slurry in your home
It depends on the water content of the slurry after crystallization. If it’s too low, it’s not suitable for pumping; a screw conveyor could be tried in such cases. A high water content allows pumping, with positive displacement pumps being the best choice. However, it seems that screws or gears cannot be used for transporting solid slurries – they are more suitable for high-viscosity materials
Screw conveyors are prone to problems, and fixing those issues takes time; therefore, it’s better to use pumps. Create a data sheet and send it to the pump manufacturer for model selection, so you don’t have to worry about it.