Coal slurry dewatering ultra-high pressure equipment, sludge filter press

The main utilization of coal slurry now is mixed power coal power generation: the coal slurry is dehydrated (28-40%) by belt filter press, plate frame/diaphragm filter press, and then dried or air dried (20%) before being mixed power coal power generation.

Deep ash removal and quality improvement of coal slurry

1. Comparison with traditional washing techniques:

(1) Conventional washing: using gravity technology theory, it is an extensive quality improvement washing with a low recovery rate of only 30-65%; 15-30% of the active ingredients are wasted, resulting in solid waste and sewage pollution to the environment. The washing effect is poor, and the recovery rate of clean coal, middling coal, slime and gangue is low.

(2) Deep flotation: The technical theory is based on the surface charge of mineral particles, utilizing different ion characteristics for flotation. The recovery rate is high, with over 98% of the active ingredients being recovered. It can achieve the complete consumption and extraction of coal, with zero pollution emissions. The washing effect is good, and the recovery rate of clean coal and tailings is high.

Coal slurry dewatering ultra-high pressure equipmentSpecialized equipment:

(1) Coal slurry pulping equipment: CPS coal slurry pulping ship is a specialized equipment developed specifically for coal slurry pulping. Adapting to various types of coal slurry, including dry solid blocks, winter frozen blocks, and paste with high moisture content, can ensure reliable and stable pulp quality; During the pulping process, all impurities larger than 1mm can be removed;

(2) Ultra fine coal dewatering equipment: The ultra-high pressure fine slurry liquid solid separation filter press currently has the effect of liquid solid separation dewatering. The liquid meets the standard and can be directly discharged or reused with SS value; ＜ 10mg/L (first level water discharge standard); Moisture content of refined coal products:<16% Moisture content of tailings products:<13%;

Intelligent control can achieve remote unmanned operation; Large production capacity, meeting the requirements of large-scale coal slurry washing, with a single processing capacity of 15t/h.

(3) Coarse and clean coal dewatering equipment: SCC high-speed centrifuge is a specialized equipment developed for deep ash removal, washing and clean coal dewatering of coal slurry. The equipment has high efficiency and large processing capacity, with an actual output of 60t/h; Small particle size for fine coal recovery: The lower limit of particle size recovery reaches 0.045mm. It can recover fine coal particles with a particle size of less than 200 mesh; Dehydrated clean coal has low moisture content: The moisture content of the dehydrated clean coal product is less than 13%.

（4）Coal slurry dewatering ultra-high pressure equipmentCoal slurry rapid settling and grading equipment: Deep cone DRC is a specialized equipment developed for rapid settling and grading of coal slurry water. The grading pool is divided into two levels. The first level is a coarse coal slurry (below 200 mesh) rapid settling pool with a specific structure cyclone built-in. The second level is a fine coal slurry settling pool with a dedicated dosing mechanism (rapid settling agent). Coal slurry can be quickly graded and concentrated through DRC, creating favorable conditions for coal slurry washing.

Advantages of deep cone DRC: simple structure, high grading efficiency, and the ability to adjust and control grading granularity.

(5) Coarse coal slurry sorting equipment: Deep TDS is a specialized equipment for coarse coal slurry sorting, with high sorting accuracy: the coal with gangue and gangue with coal content are both below 1-3%; The sorting particle size is wide, with an effective sorting lower limit of 0.1mm, and the processing capacity of the largest TDS10 series can reach 100t/h.