Hard particles such as silicates in mining effluent indeed pose a formidable challenge to the wear resistance of horizontal screw centrifuges. Addressing this issue requires breakthroughs in materials science and surface treatment processes.

   Application of Specialised Wear-Resistant Materials: This represents the most fundamental solution. For exceptionally abrasive operating conditions, standard stainless steel proves inadequate. Higher-grade materials such as duplex steel or high-nitrogen steel must be employed, with specialised hardening treatments applied to critical wear points (e.g., outer edges of spiral blades, feed ports).

Advanced Surface Hardening Techniques: The most effective current methods include:

   Hard Alloy Overlay Welding: Depositing tungsten carbide or similar hard alloys onto the material-pushing surfaces of spiral blades creates a robust ‘armour’ layer, multiplying wear resistance by several orders of magnitude.

Ceramic Inlaying: Embedding alumina ceramic tiles in the most severely worn areas provides exceptional hardness and outstanding abrasion resistance.

   Optimised structural design: Through proprietary computational fluid dynamics analysis, flow path design is refined to minimise material impact and wear on specific zones, promoting more uniform wear distribution.

   Jiangsu Longdai Environmental Protection Group Co., Ltd. possesses extensive technical expertise in this field. Our horizontal screw centrifuges feature a dedicated ‘Heavy-Duty Wear-Resistant Series’ for mining applications. We not only offer full duplex stainless steel material options but also standardise extensive tungsten carbide overlay protection on the spiral blades. Our production lines feature automated overlay welding equipment, ensuring every inch of the overlay layer is uniform and robust. This targeted design guarantees our equipment delivers significantly extended service life beyond conventional products in demanding mining environments such as those encountered in Russia.