Industrial plants run big machines with numerous moving parts. Heat losses are unavoidable and this creates a need for large scale industrial cooling to optimize the functionality of the machines and ensure safety around the plant. Oil refineries, chemical plants and power stations run temperature critical processes. Since any downtime has far-reaching consequences, these plants run their cooling systems non-stop. Coolants, with high heat capacities, circulate within the system to cool the machines. However, the heavy operation has implications.
As the coolant circulates in the cooling system, small metal chips contaminate it. The chips interfere with the heat capacity of the coolant and also damage moving parts as they circulate. One solution is to circulate the coolant for a few cycles and dispose of it. However, the cost implications are high. Coolant filtration is a cost effective solution that aims to extend the useful life of the coolant. There are different ways to filter a coolant including vacuum, gravity, pressure, magnetic filtration. The latter is a more refined method and it’s widely used in the manufacturing and processing plants
Magnetic coolant filtration relies on the principle of magnetism. Ferrous contaminants found in coolants and lubricants pass through a filter with a strong magnetic field. The contaminants adhere to the filter as the liquid seeps through. A spring loaded stainless steel scraper removes the filtrate off the magnetic surface into a bin and the process repeats. Modern magnetic filters are automated, self-cleaning. The system is often gravity fed.
Magnetic coolant filtration systems come in different designs. They include drum, cross-belt, roll, high-gradient magnetic separation (HGMS), low-intensity magnetic separation (LIMS) and high-intensity magnetic separation (HIMS) types. The magnetic drum separator is fairly common and has a compact design. The separator has a nonmagnetic drum that houses several permanent magnets. The inner periphery is lined with ceramic or metallic alloy earth. The coolant is fed to the system as the drum rotates uniformly. Paramagnetic and ferromagnetic materials are attracted to the rotating magnets and pinned on the surface of the drum. The filtride is dewatered and discharged leaving behind gangue.
Magnetic filtration has numerous advantages. The system achieves high quality filtration. Magnetic separators can achieve sub-micron filtration making filtrates free of all ferrous contaminants. Moreover, the filtration extends the operational life of machines as it clears abrasive contaminants from coolants and lubricants. Machine maintenance is also kept low as efficiency is optimized. The magnetic drum also saves on operational costs. It’s fully automated and does not need additional labour costs. The separator is maintenance free and has no consumables. Magnetic filtration saves money by recycling coolants and lubricants. This reduces the volume of chemical waste disposed of from a plant. Moreover, the filtration saves operational costs by reducing the need for coolant replacement. The only limitation of magnetic filtration is its inability to filter out non-ferrous contaminants. Other filtration systems must be added if other forms of contaminants make their way into a cooling system.
If you are running temperature sensitive operations and are reliant on an efficient cooling system, a magnetic separator may be a good investment. Get one and start enjoying the benefits immediately.
Company Name: Interfil
Contact Person Name: Suchi
Website URL: https://interfil.com.au/