Submersible slurry pump Efficient and wear-resistant choice: Taian Ocean Pump ZJQ submersible slurry pump, the ultimate solution to conquer coal sludge, tailings sand, and fly ash
Submersible slurry pump, as a revolutionary water treatment tool, have completely changed the traditional way of pumping water. Its core advantage is that it works completely submerged in water, without the need to install complex pipelines and pump rooms on the ground.
Its working principle is based on centrifugal force: before starting, the pump chamber is filled with liquid, and the impeller rotates at high speed to throw the liquid out, forming a low-pressure vacuum zone, continuously sucking in new liquid, and achieving efficient and continuous liquid (even solid-containing media) lifting and transportation. Key parameters include flow, head, power, efficiency, pipe diameter, etc., and the application range covers a wide range of fields such as construction drainage, agricultural irrigation, industrial water circulation, municipal water supply, and disaster relief.
Among the many Submersible slurry pump categories, submersible slurry pump (such as Taian Ocean Pump ZJQ series) are designed to challenge high-wear and high-concentration solid-liquid mixtures. It integrates the pump and motor into one, and they work together underwater. Compared with traditional horizontal or vertical sewage pumps, submersible slurry pump show overwhelming advantages:
1.Core advantages of Taian Ocean Pump ZJQ submersible slurry pump
1.1 Compact structure, saving space and cost:
Directly submerge in sewage pools and sedimentation tanks, eliminating expensive pump room construction, greatly saving land and infrastructure investment.
1.2 Simple and efficient installation and maintenance:
Small pumps can be installed freely, and large pumps are equipped with automatic coupling devices as standard, which can achieve fast installation and easy maintenance.
1.3 Super long and stable operating life:
The pump motor is coaxially designed, with a short shaft, light rotating parts, and small bearing load, which significantly extends the service life.
1.4 No cavitation trouble, easy to start:
Always immersed in liquid, no need to fill water, extremely convenient operation.
1.5 Silent and environmentally friendly, stable operation:
Underwater work effectively suppresses noise and vibration, the motor temperature rise is low, and there is no interference with the working environment.
1.6 Designed for highly abrasive media – King of wear resistance:
The flow-through parts are cast with high chromium alloy, which has excellent wear resistance, ensuring the long-term stable operation of the equipment in harsh environments such as pumping coal sludge, tailings sand, fly ash, etc.
1.7 Self-contained strong stirring, no auxiliary equipment required:
The unique bottom stirring impeller design is the core highlight of the ZJQ series. It can directly stir and extract sediment, without relying on auxiliary equipment such as high-pressure flushing pumps, greatly simplifying the system and reducing investment and operating costs.
1.8 Flexible movement and rapid deployment:
Small size and light weight (about 1/3 of horizontal pumps with the same performance), put it in water when in use, and lift it up when not in use, which is extremely suitable for flexible construction.
1.9 Economical and energy-saving, silent operation:
Adopting motor drive (380V/50Hz), the operating cost is much lower than diesel drive. It works fully underwater and the noise is almost zero.
2.In-depth analysis of Inner Mongolia customer cases: Practical witness of coal slime treatment
2.1. Customer background and continuous cooperation
Inner Mongolia Mining Group (affiliated to the State Energy Group) has long faced the problem of managing coal slime accumulation in sedimentation tanks. The coal slime has high viscosity and strong abrasiveness, and has strict requirements on equipment wear resistance and non-clogging performance. This customer has continued to purchase Tai’an Ocean Pump products since 2024, and the cooperation track is as follows:
March 2024: First purchase of 7.5KW submersible slurry pump + 5.5KW submersible slurry pump for primary cleaning of coal slime;
April 2025: Purchased 2 30KW ZJQ submersible slurry pumps through dealers to deal with fly ash and coal slime mixed media;
July 2025 (this month): Directly repurchased 2 15KW submersible slurry pump for deep dredging of sedimentation tanks.
2.2 Product performance under harsh working conditions
2.2.1 Wear resistance verification:
Continuously operated for 8,000 hours in a mixed medium of coal mud (including gangue particles ≤ 20mm) and fly ash (specific gravity 1.2-1.3kg/L), the flow-through parts are made of high-chromium alloy (Cr26) and no penetrating wear occurs
2.2.2 Advantages of unassisted dredging:
The bottom stirring impeller directly stirs the sediment layer (concentration up to 30%), without the need for high-pressure water assistance, and the daily processing capacity of a single unit exceeds 2,500m³
2.2.3 Zero-fault operation:
Double-face mechanical seal + oil chamber leakage sensor design, achieve 8,000 hours of leakage-free operation, reduce downtime losses.
3.Industry benchmark effect
This case has driven chain procurement in Inner Mongolia mining areas:
Zanihe Open-pit Mine (Dayan Mining) includes submersible pump maintenance services in its annual plan, and explicitly requires suppliers to have ZJQ pump maintenance experience
Alashan Coal Mine purchases flameproof WQ30-50-9.2 submersible slurry pump, and uses the same agitator impeller design to solve the problem of coal sludge compaction
4.Hot-selling product: ZJQ250-20-30 submersible slurrypump core parameters and performance
Flow rate: 250 m³/h – +40% compared with horizontal pumps of the same power
Head: 20 m – Meets 90% of sedimentation tank lifting requirements
Motor power: 30 kW – Full head without overload design + stall protection
Passing particles: ≤20 mm – Exceeding national standard MT/T 671-2005 +10%
Outlet diameter: 150 mm – Compatible with DN150 wear-resistant pipe, pressure loss -15%
Medium temperature: ≤40℃ – Suitable for circulating water pools in thermal power plants
4.1 Dual impeller synergistic system:
4.2 Main impeller: closed design, efficiency up to 82% (national standard ≤75%)1;
4.3 Mixing impeller: 270° rotation flushing at the bottom, stirring radius up to 1.5m, concentration increased to 60%35.
4.4 Breakthrough in wear-resistant system:
The flow-through parts are made of high-chromium alloy cast iron (Cr28), with a hardness of HRC58-62, which is 5-8 times longer than ordinary materials79.
4.5 Energy-saving and silent design:
Underwater operation noise ≤65dB (ground pump＞85dB), annual power consumption saves 120,000 yuan/unit compared with diesel pump25.
5.Adaptive scenarios and engineering solutions
5.1 Coal chemical industry:
Dredging of coal sludge sedimentation tanks (such as Shenhua case), solid slag transportation of coking plant wastewater, PH tolerance range 5-9710.
5.2 Mine tailings treatment:
Tailing sand density ≤1.3kg/L, the size of the supporting floating platform can be reduced to 1/3 of the horizontal pump.
5.3 Innovative application of river dredging:
6.Why choose ZJQ series?
6.1 Problems faced by customers:
Difficulty in pumping coal slime
Frequent replacement due to high wear
Inefficient mobile deployment
6.2 Innovative solutions of ZJQ250-20-30:
Bottom stirring impeller directly disturbs the sediment layer
Cr28 flow-through parts + auxiliary impeller pressure reduction wear-resistant design
Lightweight whole machine
6.3 Significant benefits for you:
No need for high-pressure water pump
Life extended to 30,000 hours, maintenance cost reduced by 60%
Lifting time shortened to 30 minutes, deployment efficiency doubled
7.Conclusion: Wear-resistant revolution of construction machinery
Taian Ocean pump ZJQ250-20-30 submersible slurry pump is becoming a new benchmark for the transportation of highly abrasive media such as coal slime and tailings with breakthroughs in material science (high chromium alloy) and structural innovation (dual impeller system). The success of the Inner Mongolia project is not only the victory of a single product, but also provides a fluid solution with “lower TCO (total cost of ownership) and higher ROI” in the fields of mining, thermal power, river management, etc. When industry competitors are still relying on auxiliary equipment, ZJQ has defined the paradigm of the next generation of submersible slag pumps with “integrated submersible, synchronous stirring and suction
Authored by
Tai’an OCEAN Pump Co., Ltd
Alina.Liu
Email: Oceanpump15@tsbeng.com
WhatsApp: +86 17354610320
