Kingda pump group

Mill Discharge Pump

Mill discharge pumps are primarily used in mineral processing to transport highly abrasive slurries, including grinding and classification, cyclone separator feeding, and tailings conveying.

The Kingda KMS mill discharge pump employs a heavy-duty horizontal centrifugal structure. Its highly wear-resistant materials can withstand the high-speed impact of large solid particles in slag, maximizing its service life.

Mill Discharge Pump Explained

Mill discharge pumps are specifically designed for grinding circuit applications and are ideal for discharging semi-autogenous and autogenous mills, thickener underflow, tailings, and hydrocyclone feed. They are also known as underflow pumps.

The mill discharge pumps are generally horizontal centrifugal pumps. The lining and impeller can be made of wear-resistant metals or rubber to suit various operating conditions.

Compared to ordinary centrifugal pumps, Mill discharge pumps can effectively pump thickener underflow slurry, offering high wear and corrosion resistance.

The high flow rate and robust construction of mill discharge pumps ensure stable operation and high efficiency even in the harshest conveying environments.

Underflow-Pump-Explained

The KMS mill discharge pump is specifically designed for mineral processing and beneficiation systems. It operates stably in the harshest environments, easily conveying high-concentration, abrasive grinding circuit slurries with exceptional efficiency, reliability, and performance.

The mill discharge pump casing features a thickened design and uses a high-wear-resistant alloy as its material, resulting in a significantly longer wear life than ordinary slurry pumps. Wet end parts can be made of rubber or metal depending on the medium being pumped, maximizing their service life.

Find the right underflow pump for your grinding circuit.

Email your operating conditions to info@kingdagroup.com for an engineered recommendation.

Kingda Mill Discharge Pump

KMS-Underflow-Pump

KMS Mill Discharge Pump

🔸Discharge Diameter(mm): 250 ~ 850

🔸Capability(m³/h): 200 ~ 24000

🔸Head(m): 10 ~ 60

🔸Material: Wear-resistant alloys, Elastic rubber  

🔸Motor(kW): 560 ~ 4000

Mill Discharge Pump Design Features

The Kingda KMS series horizontal mill discharge pumps are designed with extensive industry experience in mind, focusing on meeting the current market’s demand for superior performance. The impeller-to-guard clearance is adjustable online, and the lining can be made of wear-resistant alloy or rubber to adapt to various operating conditions.

The KMS series horizontal mill discharge pumps offer high wear and corrosion resistance, ensuring efficient operation even in harsh industrial and mining environments, guaranteeing service life and extending pump lifespan.

Versatile Applications

Suitable for a range of applications, including mill discharge, thickener underflow, tailings, and hydrocyclone feeding. Pump inlet sizes range from 250 mm to 850 mm, with options for carbide or rubber linings to meet specific process requirements.

Superior Performance

The KMS series pump is designed for long service life and consistent efficiency. The hydraulic design minimizes shaft deflection across different flow rates, while the smaller impeller overhang enhances overall performance.

Durability and Robustness

Built to withstand harsh conditions, the KMS series features oversized solid steel shafts and extra-thick pump casings and liners. These components are carefully selected for their excellent resistance to abrasion, erosion, and abnormal wear caused by coarse, heavy particles and turbulent flow.

Ease of Operation and Maintenance

The modular design ensures the interchangeability of all metal and rubber parts. An optional sliding base rear pull-out design simplifies maintenance and inspection, making the process quicker, easier, and safer. The maintenance-friendly structure and durable components reduce downtime and extend maintenance intervals.

Mill-Discharge-Pump-Design-Features

Mill Discharge Pumps Engineered for Extreme Conditions

Mill Discharge Slurry Conveying

The mill discharge station is the first step in mill discharge. This station typically requires pumping slurry with high solids concentration particles, and the slurry is highly abrasive. A mill discharge pump ensures smooth pumping and prevents mill blockage.

Mining Grinding Circuit

In a mining grinding circuit, it is necessary to transport the slurry that has undergone preliminary grinding. This slurry contains a large amount of solids and has a high specific gravity. The underflow pump can provide stable flow and pressure and is an important piece of equipment for grinding and classification.

Hydrocyclone Feed

The mill discharge pump is the direct feed pump for the hydrocyclone. This process requires the transport of high-concentration, highly abrasive slurry. The pump at this station provides the hydrocyclone with stable and efficient classification.

Thickener underflow

During the thickener underflow process, the slurry remains highly abrasive, with high concentration and poor fluidity, making it extremely prone to clogging. This places extremely high demands on the pump's anti-clogging and anti-abrasion properties.

Tailings Conveying

Tailings conveying is the final step in the mineral processing stage. Tailings contain a large number of solid particles, and the conveying distance is usually long, which requires the mill discharge pump to have excellent stability and continuous operation capability.

Applications

Mill Discharge Pump Curve

Underflow-Pump-Curve

Mill Discharge Pump Structure Diagram

Underflow-Pump-Structure-Diagram

Looking for a reliable mill discharge pump?

Share your slurry characteristics, flow rate, and head requirements with us at info@kingdagroup.com

China Mill Discharge Pump Manufacturer, Since 1948

As one of China’s earliest mill discharge pump manufacturers, Kingda Pump Group has focused on the research and development and manufacturing of slurry pumps since 1948. Based on our extensive experience in customer projects, we ensure that we provide you with the most comprehensive products and services.

Kingda Pump Group possesses a complete slurry pump manufacturing chain. From material research and development and casting processes to product assembly, we have strict inspection standards, which means that our products have impeccable quality.

We have a team of experienced and highly skilled maintenance engineers. When your project encounters a problem, they will provide you with a solution as quickly as possible, minimizing your downtime and maximizing work efficiency.

China-Underflow-Pump-Manufacturer

FAQ

Both mill discharge pumps and underflow pumps are essentially slurry pumps; the difference in naming indicates their different operating positions and conditions.

Mill discharge pumps are used at the mill outlet discharge and in hydrocyclones, forming part of the grinding recirculation process.

Underflow pumps are more commonly used in the thickener overflow process, which requires pumping high-concentration, poorly flowing slurry. This necessitates pumps with strong anti-clogging and anti-abrasion properties.

The thickener underflow pump and mill discharge pump both belong to the slurry pump category, but thickener underflow pump is usually used in the thickener underflow process to transport slurries with higher concentration, lower fluidity, and greater susceptibility to clogging.

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