I need to prepare a solution using 500 kg of sodium chloride per day. Can sodium chloride be transferred using silos and screw conveyors, or via pneumatic transport?

What are your thoughts on this issue? What will you gain by solving this problem? With this way of thinking, one will never become proficient even by retirement: Sodium chloride poses almost no risk, so there are no safety issues. If it is sodium chlorate, mechanical handling may lead to an explosion, so the safety design needs to be more complex. Technically, considering factors such as the particle size, hardness, and viscosity of the material, it is determined whether mechanical conveying is feasible. It seems that using a screw conveyor isn’t difficult either

What other safety considerations are required besides explosion prevention when mechanically or pneumatically transporting hazardous solids?

Sodium chloride is the main component of table salt, and it certainly cannot be considered a hazardous substance. The main issue with industrial solid sodium chloride is its corrosiveness, and it tends to absorb moisture when stored outdoors. It is generally not recommended to use mechanical methods such as screws for transportation, as this can cause severe corrosion to the equipment. For short distances, pneumatic conveying can be used (the pipeline should have an anti-corrosion lining). Given the long distance, a temporary storage area can be set up directly inside the solvent preparation room, next to the solution tank equipment, where sodium chloride can be stored there along with its packaging. If automation is required, then an automatic feeding bag-breaking machine should be used; if automation isn’t a concern, workers can come in once a day to feed it manually – 500 kg isn’t much at all. One person can handle it.

Since a sodium chloride solution is needed, why not set up a salt solution tank and use a salt solution pump for transportation?

This post was last edited by Wise Ming on 2023-2-5 at 11:47. It’s just a matter of a worker on duty – is it really necessary to make it so complicated? If the discharge port has a certain height, a small, simple electric lifting mechanism can be added.

What is the delivery status of NaCl? Small pack, large pack? Still in a pile? Manual unpacking can be used first, with a saturated sodium chloride solution – for high-end applications a PTFE tank is used, for standard applications a plastic tank, and for low-end applications a tile-lined tank. Things become simpler after that; if precise control over concentration is required, a metering pump can be used to prepare the concentrated salt water.

This post was last edited by wang*neng on 2023-2-6 11:48. Yes! The specific conveying method to be used also depends on factors such as the conveying distance and location, with the goal of selecting the most economical option. Relatively speaking, it is simpler to dissolve the salt locally first and use pumps for transportation.