NT(N)X series concentration and classification cyclones (sets) are key equipment to achieve efficient concentration and fine classification of slurry in the fields of coal preparation, mineral processing and environmental protection. This equipment is based on the principle of centrifugal sedimentation. Through powerful cyclone action, it can complete two core processes at the same time: one is to accurately classify fine-grained materials and separate qualified products according to particle size; the other is to efficiently concentrate suspensions (such as coal slime water) to remove excess water and greatly increase the underflow concentration. Its core advantages lie in high classification efficiency, large concentration ratio, compact structure and stable operation. As the star product of the hydrocyclone group, it is especially suitable for large-scale coal preparation plants with high processing capacity requirements. It is an ideal choice for optimizing process flow, reducing the load of subsequent equipment, realizing closed-circuit circulation of washing water and efficient resource recovery.