A cyclone separator and multicyclone are commonly used in industrial furnaces to remove dust and ash particles from flue gases before they are released into the atmosphere. A cyclone works on the principle of Centrifugal Force, where dust-laden gas enters tangentially and spins rapidly, causing heavier particles to move outward, hit the walls, and fall into a hopper, while cleaner gas exits from the top. It is simple, durable, and effective for larger particles, but less efficient for very fine dust. A multicyclone improves upon this by using many smaller cyclones arranged in parallel, increasing the separation efficiency due to stronger centrifugal action in each unit. This allows it to capture finer particles and achieve higher overall efficiency. In furnace systems, cyclones are often used as primary dust collectors, while multicyclones act as secondary devices to enhance pollution control and protect downstream equipment.