When screening targets shift from regular granules to ultra-fine powders or light-density materials, ordinary vibrating screens often fail — material either clogs the mesh or gets damaged by intense vibration. The YBS series gyratory sifter from THZD is engineered precisely for these challenging applications, and it has proved its value in Indonesia and Kazakhstan’s food, chemical, and mineral deep-processing sectors.
The machine works on a simple yet effective principle: imitate manual hand-sifting. The screen box performs a smooth, planar rotary motion, and material fed at the center spirals gently outward across the mesh surface. Compared with the high-frequency impact of vibratory screens, this tumbling motion allows longer and softer contact between particles and screen, resulting in higher penetration of fines and minimal particle breakage. With 1 to 5 screen decks stacked vertically, the YBS can produce multiple size fractions in one compact unit, saving floor space.
In Indonesia, the YBS is widely adopted for fine grading of instant coffee powder, coconut milk powder, spices, and other food ingredients. All product-contact parts are made of stainless steel, and the sanitary sealed design meets food processing standards. The low-heat generation of the gyratory motion preserves the flavor and integrity of heat-sensitive materials. For chemical applications like coating powders, PVC resin, and titanium oxide, an optional ultrasonic de-blinding system can be integrated to eliminate static-related screen clogging and maintain high throughput.
In Kazakhstan, the YBS sifter excels in classifying metal powders (iron, aluminum), compound fertilizers, and fine mineral powders. Its low dynamic load allows direct installation on lightweight steel platforms or upper floors without heavy foundations. The fully enclosed construction delivers zero dust leakage, helping operators meet strict occupational health and environmental regulations. Moreover, the stable operating parameters and long-lasting screens significantly reduce manual maintenance at remote mining sites.
In many cases, the YBS series provides screening precision and durability comparable to much more expensive imported sifters or trommel screens, making it a smart investment for Asian processors looking to boost product value.
