Blog
04
2021
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02
Precautions for the use and dissolution of special polyacrylamide in steel mills
Steel mill special polyacrylamide PAM is a kind of water-soluble polymer, because its molecular chain contains a certain number of polar groups, so it can absorb the solid particles suspended in water to bridge between the particles or make the particles aggregate to form a large floc by charge neutralization. Therefore, the special polyacrylamide PAM for steel mills can accelerate the sedimentation of particles in the suspension, and has the effect of accelerating the clarification of the solution and promoting filtration.
The polyacrylamide series for steel mills is a water-soluble linear polymer synthesized with a high degree of polymerization. It is completely soluble in water and can be quickly dissolved due to its particulate form. Different types of polyacrylamides have different active groups, which can flocculate different suspended particles and promote filtration and separation. This series of products are almost insoluble in any organic solvent, but soluble in water, clarify and purify, promote precipitation, promote filtration, Thickening and other functions.
Precautions for the use of polyacrylamide for steel mills:
The dissolution of polyacrylamide for steel mills requires a certain temperature to accelerate the dissolution rate. However, if the temperature is too high, the molecular chain of the polymer will be broken and the use effect will be reduced. Generally, the appropriate dissolution temperature is 50 --- 60°C. Dissolution should avoid excessive shear force stirring, excessive stirring will destroy the molecular chain and reduce the use effect. Stirring should be done with low-speed paddles, such as anchor, frame, multi-layer paddles, etc., with a stirring speed of about 60 rpm. High-speed centrifugal pumps should also be avoided during transportation, and piston pumps or diaphragm pumps are more suitable.
The key link in the dissolution of polyacrylamide for steel mills is the uniform dispersion of the feed. After the mixer is started, the mechanical vibrating screen can be used for feeding, and the "large" and insoluble particles can be avoided as much as possible, so that the polyacrylamide can be fully dissolved And play a role, so that the use effect is better. In the dissolution stirring and conveying system, plastic, enamel, aluminum, stainless steel and other materials can be used to avoid contact with iron.
The above is the use and dissolution of polyacrylamide for steel mills. I hope the summary of the small series will be helpful to you.
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