 |
| Quantity: | |
|---|---|
Gravel Sand Pump Specifications:
Size (discharge): 4" to 18"
Capacity: 36-4320m3/hr
Head: 5m-80 m
Handling solids: 0-260mm
Concentration: 0%-70%
Material: High chrome alloy, Cast iron, Stainless steel etc
DOS Sand Dredge Pump: High-Performance Dredging Solution
1. Introduction
A “DOS sand dredge pump” is a specialized centrifugal pump designed for extracting, transporting, and discharging sand, slurry, and other abrasive materials in dredging operations. These pumps are widely used in mining, river dredging, land reclamation, and construction projects due to their robust construction, high wear resistance, and efficient performance.
This article provides a detailed description of sand dredge pumps, including the sand dredge pump characteristics, features, applications, material composition (high-chrome alloy), hardness, dredging capabilities, ease of maintenance, high performance, long-distance transfer, and high-pressure operation.
2. DOS Sand dredge Pump Characteristics
Sand dredge pumps are engineered to handle highly abrasive mixtures with efficiency and durability. Key characteristics include:
- Centrifugal Design: Utilizes centrifugal force to move sand and slurry at high speeds.
- Heavy-Duty Construction: Built to withstand harsh dredging environments.
- High Wear Resistance: Made from high-chrome materials to combat abrasion.
- Large Flow Capacity: Capable of handling high volumes of sand and water mixtures.
- Robust Impeller & Casing: Designed to minimize wear and maximize efficiency.
- Corrosion Resistance: Suitable for both freshwater and saltwater applications.
3. Features of Sand Dredge Pumps
(1) High-Chrome Material Composition
The most critical feature of a sand dredge pump is its “high-chrome alloy construction”. The pump's **impeller, casing, and wearing liners** are typically made from **Cr27, Cr30, or A05 high-chrome white iron**, offering exceptional hardness and wear resistance.
- Hardness: Typically 58-65 HRC (Rockwell Hardness), ensuring long service life even under extreme abrasion.
-Impact Resistance: The high-chrome material can withstand the impact of large solid particles.
- Corrosion Resistance: Performs well in both saline and acidic environments.
(2) Superior Dredging Ability
- Handles “high-density slurries” (up to 60-70% solids concentration).
- Efficiently pumps “sand, gravel, silt, and other sediments”.
- Capable of dredging “deep underwater” (up to 30 meters or more, depending on pump power).
(3) Easy Maintenance
- Modular Design: Allows quick replacement of wear parts (impeller, liners, seals).
- Accessible Components: Easy disassembly for cleaning and servicing.
-Long Service Intervals: Reduced downtime due to high durability.
(4) High Performance & Efficiency
- High Flow Rates: Can move hundreds to thousands of cubic meters per hour.
- High Head Pressure: Capable of “long-distance slurry transfer” (up to several kilometers).
- Energy-Efficient Operation: Optimized hydraulic design reduces power consumption.
(5) Long-Distance Transfer & High Pressure
- Pipeline Dredging: Suitable for long-distance slurry transport (1km to 5km+).
- High-Pressure Capability: Some models can generate **pressure up to 1.5 MPa for demanding applications.
4. Applications of Sand Dredge Pumps
Sand dredge pumps are used in various industries, including:
(1) River & Lake Dredging
- Dredging sand from river & lake.
- Removing sediment to restore water depth.
- Preventing flooding by improving water flow.
(2) Mining & Mineral Extraction
- Extracting sand, gold, iron ore, and other minerals.
- Transporting tailings and slurry in processing plants.
(3) Land Reclamation
- Pumping sand to create new land in coastal areas.
- Beach nourishment projects.
(4) Construction & Tunneling
- Dewatering foundation pits.
- Handling slurry in tunnel boring operations.
(5) Port & Harbor Maintenance
- Keeping shipping channels clear of sediment.
- Dock construction and maintenance.
5. Advantages Over Conventional Pumps
Feature | Sand Dredge Pump | Standard Centrifugal Pump |
Material | High-chrome alloy (Cr27, Cr30) | Cast iron, stainless steel |
Abrasion Resistance | Extremely high (58-65 HRC) | Moderate |
Solids Handling | Up to 70% solids | up to 5% |
Maintenance | Easy wear-part replacement | Frequent breakdowns |
Lifespan | 2-5x longer | Shorter under abrasion |
Pressure & Distance | High-pressure, long-distance | Limited |
Sand dredge pumps are essential for heavy-duty dredging operations, offering unmatched durability, high performance, and low maintenance. Their high-chrome construction ensures longevity in abrasive environments, while their high-pressure and long-distance capabilities make them ideal for mining, construction, and marine projects.
Whether for river dredging, mining, or land reclamation, a high-quality sand dredge pump provides reliable, efficient, and cost-effective slurry transportation. Investing in a wear-resistant, high-performance dredge pump ensures maximum productivity and minimal downtime in demanding applications.
iTECH TM DOS Gravel Sand Pumps Quick Selection Chart:
iTECH TM DOS Gravel Sand Pumps Performance Parameter:
Model | Max.Power P (kw) | Capacity Q (m³/h) | Head H (m) | Speed n (r/min) | Eff. η (% ) | NPSH (m) | Impeller Dia. (mm) |
6/4D-DOS | 60 | 36-250 | 5-52 | 600-1400 | 58 | 2-5.5 | 378 |
6/4E-DOS | 120 | 36-250 | 5-52 | 600-1400 | 58 | 2-5.5 | 378 |
8/6E-DOS | 120 | 126-576 | 6-45 | 800-1400 | 60 | 3-4.5 | 391 |
10/8F-DOS | 560 | 216-936 | 8-52 | 500-1000 | 65 | 3-7.5 | 533 |
10/8S-DOSH | 560 | 180-1440 | 24-80 | 500-950 | 72 | 2.5-5 | 711 |
10/8F-DOS | 260 | 216-936 | 8-52 | 400-800 | 65 | 3-7.5 | 533 |
12/10F-DOS | 260 | 360-1440 | 10-60 | 350-700 | 65 | 1.5-4.5 | 667 |
12/10G-DOS | 600 | 360-1440 | 10-60 | 400-850 | 65 | 1.5-4.5 | 667 |
12/10G-DOSH | 600 | 288-2808 | 16-80 | 350-700 | 73 | 2-10 | 950 |
14/12G-DOS | 600 | 576-3024 | 8-70 | 300-700 | 68 | 2-8 | 864 |
14/12T-DOS | 1200 | 576-3024 | 8-70 | 300-700 | 68 | 2-8 | 864 |
16/14GG-DOS | 600 | 720-3600 | 18-45 | 300-500 | 70 | 3-9 | 1016 |
16/14T-DOS | 1200 | 720-3600 | 18-45 | 300-500 | 70 | 3-9 | 1016 |
16/14TU-DOSH | 1200 | 324-3600 | 26-70 | 300-500 | 72 | 3-6 | 1270 |
18/16TU-DOS | 1200 | 720-4320 | 12-48 | 250-500 | 72 | 3-6 | 1067 |
iTECH TM DOS Gravel Sand Pumps Structural Design:
Metal Lined Pump | ||
No | Parts Name | Materials |
1 | Cover Plate | 27% HyperChrome Alloy |
2 | Throat Bush | 27% HyperChrome Alloy |
3 | Impeller | 27% HyperChrome Alloy |
4 | Bowl | 27% HyperChrome Alloy |
5 | Back Liner | 27% HyperChrome Alloy |
6 | Stuffing Box | HT200 |
7 | Mounting Plate | QT500-7 |
8 | Frame | QT500-7 |
9 | Bearing Assembly | SKF/Timken (Standard) |
10 | Clamp Ring | 25# Steel |
iTECH TM DOS Gravel Sand Pumps Shaft Seal Arrangement:
• Packing Seal is a general shaft seal.It applys to various pumping conditions, PTFE and Graphite materials of Packing can be used in high corrosive slurries or high temperature conditions.Using ceramic shaft sleeve,For high abrasion conditions, The ceramic shaft sleeve is available.
No. | Part name | Materials | |
1 | Stuffing box | KmTBCr27 | |
2 | Lantern restrictor | 1Cr8Ni9Ti | |
3 | Packing | PTFE | |
4 | Gland assembly | HT250 | |
5 | Shaft sleeve | KS81 |
• Expeller Seal is an impeller force of reversed centrifugal force, preventing slurry leakage. Expeller seal can be used on the single-stage pump when the positive pressure of pump inlet is no more than 10% of pump outlet pressure or on the first-stage pump in the pump series.
No. | Part name | Materials | |
1 | Expeller ring | KmTBCr27 | |
2 | Expeller | KmTBCr27 | |
3 | Packing | PTFE | |
4 | Neck ring | 1Cr8Ni9Ti | |
5 | Lantern ring | 1Cr8Ni9Ti | |
6 | Gland assembly | HT250 | |
7 | Oil cup | Q235 |
• Mechanical Seal is advanced sealing technique without sealing leakage, integrating construction, convenient installation & replacement, various constructions suit for all kinds of conditions.
No. | Part name | Materials | |
1 | Static ring assembly | SS316 | |
2 | Rotating ring assembly | SS316 |
iTECH TM DOS Gravel Sand Pumps Frame Explanation:
Frame type | A | B | C | D | E | R | F | G | S | T |
Max.Power (kw) | 7.5 | 15 | 30 | 60 | 120 | 300 | 260 | 600 | 560 | 1200 |
Frame Weight (kg) | 17 | 24 | 45 | 77.5 | 154 | 228 | 555 | 1006 | 546 | 1156 |
Amount of Shaft Sealing Water (l/s) | 0.15 | 0.25 | 0.35 | 0.55 | 0.70 | 0.70 | 0.70 | 1.20 | 1.20 | 1.60 |
iTECH TM DOS Gravel Sand Pumps On-site Applications:
• Mining | • Dredging | • Mineral processing | • Sand Excavation |
• Tunnelling | • Tunnel boring machine | • Tailings | • Dredger |
• Pipe-jacking system | • Ash handing | • Metal melting | • Coarse sand |
• Blast slag | • Lime mud | • Coal prep | • Waste sludge |
• Alumina Industry | • Power Plant | • Construction | • Other industries |
iTECH TM DOS Gravel Sand Pump Dimensions:
* iTECH® is a registered trademark and does not represent or is not in any way affiliated with Warman® of Weir Minerals Group. All names,numbers, symbols and descriptions are used for reference purpose only and do not imply that any pumps or parts listed is the product of Warman Pumps.
* iTECH® DOS gravel pumps and spares are only interchangeable with Warman® G gravel pumps and spares.
* This document is the property of iTECH® Pump and can be neither reproduced nor disclosed to a third party without a written authorization.
Gravel Sand Pump Specifications:
Size (discharge): 4" to 18"
Capacity: 36-4320m3/hr
Head: 5m-80 m
Handling solids: 0-260mm
Concentration: 0%-70%
Material: High chrome alloy, Cast iron, Stainless steel etc
DOS Sand Dredge Pump: High-Performance Dredging Solution
1. Introduction
A “DOS sand dredge pump” is a specialized centrifugal pump designed for extracting, transporting, and discharging sand, slurry, and other abrasive materials in dredging operations. These pumps are widely used in mining, river dredging, land reclamation, and construction projects due to their robust construction, high wear resistance, and efficient performance.
This article provides a detailed description of sand dredge pumps, including the sand dredge pump characteristics, features, applications, material composition (high-chrome alloy), hardness, dredging capabilities, ease of maintenance, high performance, long-distance transfer, and high-pressure operation.
2. DOS Sand dredge Pump Characteristics
Sand dredge pumps are engineered to handle highly abrasive mixtures with efficiency and durability. Key characteristics include:
- Centrifugal Design: Utilizes centrifugal force to move sand and slurry at high speeds.
- Heavy-Duty Construction: Built to withstand harsh dredging environments.
- High Wear Resistance: Made from high-chrome materials to combat abrasion.
- Large Flow Capacity: Capable of handling high volumes of sand and water mixtures.
- Robust Impeller & Casing: Designed to minimize wear and maximize efficiency.
- Corrosion Resistance: Suitable for both freshwater and saltwater applications.
3. Features of Sand Dredge Pumps
(1) High-Chrome Material Composition
The most critical feature of a sand dredge pump is its “high-chrome alloy construction”. The pump's **impeller, casing, and wearing liners** are typically made from **Cr27, Cr30, or A05 high-chrome white iron**, offering exceptional hardness and wear resistance.
- Hardness: Typically 58-65 HRC (Rockwell Hardness), ensuring long service life even under extreme abrasion.
-Impact Resistance: The high-chrome material can withstand the impact of large solid particles.
- Corrosion Resistance: Performs well in both saline and acidic environments.
(2) Superior Dredging Ability
- Handles “high-density slurries” (up to 60-70% solids concentration).
- Efficiently pumps “sand, gravel, silt, and other sediments”.
- Capable of dredging “deep underwater” (up to 30 meters or more, depending on pump power).
(3) Easy Maintenance
- Modular Design: Allows quick replacement of wear parts (impeller, liners, seals).
- Accessible Components: Easy disassembly for cleaning and servicing.
-Long Service Intervals: Reduced downtime due to high durability.
(4) High Performance & Efficiency
- High Flow Rates: Can move hundreds to thousands of cubic meters per hour.
- High Head Pressure: Capable of “long-distance slurry transfer” (up to several kilometers).
- Energy-Efficient Operation: Optimized hydraulic design reduces power consumption.
(5) Long-Distance Transfer & High Pressure
- Pipeline Dredging: Suitable for long-distance slurry transport (1km to 5km+).
- High-Pressure Capability: Some models can generate **pressure up to 1.5 MPa for demanding applications.
4. Applications of Sand Dredge Pumps
Sand dredge pumps are used in various industries, including:
(1) River & Lake Dredging
- Dredging sand from river & lake.
- Removing sediment to restore water depth.
- Preventing flooding by improving water flow.
(2) Mining & Mineral Extraction
- Extracting sand, gold, iron ore, and other minerals.
- Transporting tailings and slurry in processing plants.
(3) Land Reclamation
- Pumping sand to create new land in coastal areas.
- Beach nourishment projects.
(4) Construction & Tunneling
- Dewatering foundation pits.
- Handling slurry in tunnel boring operations.
(5) Port & Harbor Maintenance
- Keeping shipping channels clear of sediment.
- Dock construction and maintenance.
5. Advantages Over Conventional Pumps
Feature | Sand Dredge Pump | Standard Centrifugal Pump |
Material | High-chrome alloy (Cr27, Cr30) | Cast iron, stainless steel |
Abrasion Resistance | Extremely high (58-65 HRC) | Moderate |
Solids Handling | Up to 70% solids | up to 5% |
Maintenance | Easy wear-part replacement | Frequent breakdowns |
Lifespan | 2-5x longer | Shorter under abrasion |
Pressure & Distance | High-pressure, long-distance | Limited |
Sand dredge pumps are essential for heavy-duty dredging operations, offering unmatched durability, high performance, and low maintenance. Their high-chrome construction ensures longevity in abrasive environments, while their high-pressure and long-distance capabilities make them ideal for mining, construction, and marine projects.
Whether for river dredging, mining, or land reclamation, a high-quality sand dredge pump provides reliable, efficient, and cost-effective slurry transportation. Investing in a wear-resistant, high-performance dredge pump ensures maximum productivity and minimal downtime in demanding applications.
iTECH TM DOS Gravel Sand Pumps Quick Selection Chart:
iTECH TM DOS Gravel Sand Pumps Performance Parameter:
Model | Max.Power P (kw) | Capacity Q (m³/h) | Head H (m) | Speed n (r/min) | Eff. η (% ) | NPSH (m) | Impeller Dia. (mm) |
6/4D-DOS | 60 | 36-250 | 5-52 | 600-1400 | 58 | 2-5.5 | 378 |
6/4E-DOS | 120 | 36-250 | 5-52 | 600-1400 | 58 | 2-5.5 | 378 |
8/6E-DOS | 120 | 126-576 | 6-45 | 800-1400 | 60 | 3-4.5 | 391 |
10/8F-DOS | 560 | 216-936 | 8-52 | 500-1000 | 65 | 3-7.5 | 533 |
10/8S-DOSH | 560 | 180-1440 | 24-80 | 500-950 | 72 | 2.5-5 | 711 |
10/8F-DOS | 260 | 216-936 | 8-52 | 400-800 | 65 | 3-7.5 | 533 |
12/10F-DOS | 260 | 360-1440 | 10-60 | 350-700 | 65 | 1.5-4.5 | 667 |
12/10G-DOS | 600 | 360-1440 | 10-60 | 400-850 | 65 | 1.5-4.5 | 667 |
12/10G-DOSH | 600 | 288-2808 | 16-80 | 350-700 | 73 | 2-10 | 950 |
14/12G-DOS | 600 | 576-3024 | 8-70 | 300-700 | 68 | 2-8 | 864 |
14/12T-DOS | 1200 | 576-3024 | 8-70 | 300-700 | 68 | 2-8 | 864 |
16/14GG-DOS | 600 | 720-3600 | 18-45 | 300-500 | 70 | 3-9 | 1016 |
16/14T-DOS | 1200 | 720-3600 | 18-45 | 300-500 | 70 | 3-9 | 1016 |
16/14TU-DOSH | 1200 | 324-3600 | 26-70 | 300-500 | 72 | 3-6 | 1270 |
18/16TU-DOS | 1200 | 720-4320 | 12-48 | 250-500 | 72 | 3-6 | 1067 |
iTECH TM DOS Gravel Sand Pumps Structural Design:
Metal Lined Pump | ||
No | Parts Name | Materials |
1 | Cover Plate | 27% HyperChrome Alloy |
2 | Throat Bush | 27% HyperChrome Alloy |
3 | Impeller | 27% HyperChrome Alloy |
4 | Bowl | 27% HyperChrome Alloy |
5 | Back Liner | 27% HyperChrome Alloy |
6 | Stuffing Box | HT200 |
7 | Mounting Plate | QT500-7 |
8 | Frame | QT500-7 |
9 | Bearing Assembly | SKF/Timken (Standard) |
10 | Clamp Ring | 25# Steel |
iTECH TM DOS Gravel Sand Pumps Shaft Seal Arrangement:
• Packing Seal is a general shaft seal.It applys to various pumping conditions, PTFE and Graphite materials of Packing can be used in high corrosive slurries or high temperature conditions.Using ceramic shaft sleeve,For high abrasion conditions, The ceramic shaft sleeve is available.
No. | Part name | Materials | |
1 | Stuffing box | KmTBCr27 | |
2 | Lantern restrictor | 1Cr8Ni9Ti | |
3 | Packing | PTFE | |
4 | Gland assembly | HT250 | |
5 | Shaft sleeve | KS81 |
• Expeller Seal is an impeller force of reversed centrifugal force, preventing slurry leakage. Expeller seal can be used on the single-stage pump when the positive pressure of pump inlet is no more than 10% of pump outlet pressure or on the first-stage pump in the pump series.
No. | Part name | Materials | |
1 | Expeller ring | KmTBCr27 | |
2 | Expeller | KmTBCr27 | |
3 | Packing | PTFE | |
4 | Neck ring | 1Cr8Ni9Ti | |
5 | Lantern ring | 1Cr8Ni9Ti | |
6 | Gland assembly | HT250 | |
7 | Oil cup | Q235 |
• Mechanical Seal is advanced sealing technique without sealing leakage, integrating construction, convenient installation & replacement, various constructions suit for all kinds of conditions.
No. | Part name | Materials | |
1 | Static ring assembly | SS316 | |
2 | Rotating ring assembly | SS316 |
iTECH TM DOS Gravel Sand Pumps Frame Explanation:
Frame type | A | B | C | D | E | R | F | G | S | T |
Max.Power (kw) | 7.5 | 15 | 30 | 60 | 120 | 300 | 260 | 600 | 560 | 1200 |
Frame Weight (kg) | 17 | 24 | 45 | 77.5 | 154 | 228 | 555 | 1006 | 546 | 1156 |
Amount of Shaft Sealing Water (l/s) | 0.15 | 0.25 | 0.35 | 0.55 | 0.70 | 0.70 | 0.70 | 1.20 | 1.20 | 1.60 |
iTECH TM DOS Gravel Sand Pumps On-site Applications:
• Mining | • Dredging | • Mineral processing | • Sand Excavation |
• Tunnelling | • Tunnel boring machine | • Tailings | • Dredger |
• Pipe-jacking system | • Ash handing | • Metal melting | • Coarse sand |
• Blast slag | • Lime mud | • Coal prep | • Waste sludge |
• Alumina Industry | • Power Plant | • Construction | • Other industries |
iTECH TM DOS Gravel Sand Pump Dimensions:
* iTECH® is a registered trademark and does not represent or is not in any way affiliated with Warman® of Weir Minerals Group. All names,numbers, symbols and descriptions are used for reference purpose only and do not imply that any pumps or parts listed is the product of Warman Pumps.
* iTECH® DOS gravel pumps and spares are only interchangeable with Warman® G gravel pumps and spares.
* This document is the property of iTECH® Pump and can be neither reproduced nor disclosed to a third party without a written authorization.
