Longteng Machinery, a professional manufacturer of slurry pumps
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SLURRY PUMPLongteng provides reliable slurry pumping solutions for demanding mining, mineral processing and industrial applications, backed by experienced engineering, quality manufacturing and responsive technical support.
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INDUSTRIESExplore slurry pump applications across mining, mineral processing,dredging, power generation and other demanding industries.
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RESOURCESPractical resources, guides and case studies to help you select, operate and maintain slurry pumps.
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ABOUT USLearn about Longteng's slurry pump expertise, manufacturing capabilities, quality control and commitment to reliable pumping solutions.
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2026-10
Pump Impeller Diameter and Trimming Before You Change the Duty
Pump impeller diameter influences hydraulic performance, but a diameter change must be evaluated with the pump curve, system requirements, and approved mechanical configuration. Trimming can help some oversized centrifugal pumps match a lower duty. It is not a universal correction for low efficiency, poor suction conditions, or rapid slurry wear. For a replacement buyer, diameter is also only one dimension. Two impellers with the same outside diameter can have different passages, shaft connections, axial positions, and performance. Ordering from the outside diameter alone creates both fit and duty risks. This guide explains the distinction between selecting an approved diameter, machining an existing impeller, and identifying a replacement. The U.S. Department of Energy's trimming guidance, Hydraulic Institute system principles, and KSB's geometry discussion provide the technical basis. Numerical examples are simplified illustrations, not Longteng performance predictions.
2026-10-13
13
2026-10
Choosing Pump Impeller Materials for Abrasion Corrosion and Heat
The right pump impeller material is the material that survives the actual combination of liquid chemistry, solids, temperature, and mechanical duty. Hardness alone does not establish suitability. A corrosion-resistant alloy can still wear in abrasive service, and a material that handles fine particles well can fail when sharp oversize enters the pump. Begin by identifying the limiting failure mechanism, then screen materials against the complete operating envelope. Only compare purchase price after the proposed grade or compound, component geometry, and acceptance requirements are clear. This guide explains the general selection logic before applying it to Longteng's published high-chrome metal, rubber, and polyurethane slurry impellers. Manufacturer material references and the public scope of ASTM A532 support the discussion. No universal temperature limit, particle-size limit, or service-life guarantee is assigned to an unspecified material family.
2026-10-13
13
2026-10
Open vs Closed Impeller Selection for Solids and Slurry
Choose between open, semi-open, and closed impellers by comparing the complete pump at the required duty and with the actual liquid. Open construction can improve access to the vanes in suitable designs, while enclosed passages can offer hydraulic and structural advantages. Neither construction guarantees freedom from blockage, high efficiency, or long wear life. For solids and slurry, the important questions are what enters the pump, how it moves through the passages, how clearance changes with wear, and what maintenance the site can perform. These questions are more useful than a blanket claim that one construction is best. This guide uses Hydraulic Institute construction definitions and manufacturer application examples. It is a selection framework, not authorization to convert an installed pump. Any proposed change must be checked against the casing, shaft system, drive, and manufacturer's approved configurations.
2026-10-13
12
2026-10
Impeller Types Explained by Shrouds Flow Direction and Suction
Impeller types are classified along several independent dimensions. Open, semi-open, and closed describe shroud construction. Radial, mixed-flow, and axial describe the principal flow direction. Single-suction and double-suction describe how liquid enters. A useful specification combines the relevant descriptions instead of treating them as competing alternatives. An impeller can therefore be both closed and radial, or both semi-open and single-suction. Material, vane arrangement, solids passage, and the number of pump stages add further information. None of these labels alone proves that a pump will meet a particular duty. This article is a classification guide for buyers and engineers comparing centrifugal pump proposals. Hydraulic Institute definitions and manufacturer references provide the terminology. The discussion extends beyond Longteng's published slurry pump range where necessary to explain the categories; those broader examples are not claims that Longteng supplies every pump type described.
2026-10-12
12
2026-10
Centrifugal Pump Parts Explained from the Wet End to the Drive
The main centrifugal pump parts are the impeller, casing, shaft, bearings, and sealing arrangement, supported by a drive and mounting system. Their functions are related, but they are not interchangeable purchasing categories. A wet-end replacement order, a bare pump quotation, and a complete pump package can contain very different equipment. For an industrial buyer, the useful question is not simply what each part is called. It is which parts contact the liquid, which contain pressure, which locate the rotating assembly, and which interfaces must remain compatible after maintenance. This guide explains those relationships for common centrifugal arrangements and then distinguishes the replaceable wet-end construction used in many slurry pumps. Manufacturer component references and published slurry pump documentation support the terminology. The functional diagram does not represent a specific Longteng assembly or an installation procedure.
2026-10-12
12
2026-10
What Is a Pump Impeller and How Does It Move Liquid
A pump impeller is the rotating component that transfers energy from the drive to the liquid. In a typical radial centrifugal pump, liquid enters near the center of the impeller, travels through passages between its vanes, and leaves toward the outer diameter. The surrounding stationary flow passages collect that liquid and guide it toward the discharge. Understanding this component helps buyers ask better questions about pump performance, replacement parts, and service conditions. An impeller is not selected by appearance or diameter alone. Its hydraulic geometry, material, shaft connection, operating speed, and relationship to the casing all matter. This guide covers centrifugal pump impellers, with additional considerations for abrasive slurry service. It draws on manufacturer technical references and Hydraulic Institute fundamentals. The diagrams explain general relationships; they are not manufacturing drawings or performance data for a Longteng model.
2026-10-12
Shijiazhuang Longteng Machinery Co., Ltd
Address: Yudi Industrial Zone, Luancheng District, Shijiazhuang City, Hebei, China.
Phone/Whatsapp:+86-15830152559
Email:info@slurrypump-hb.com
