Used Travel Wheel Axle For Crane Trolley for sale (41,816)
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Listing
Veghel
7,560 km
Gantry crane
Bollegraaf portaalkraan / gantry crane
Call
Condition: used, 1x gantry crane
Working load: 2 x 10,000 = 20,000 kg
Span: 24 m
Cantilever: 1 x 3 m
Lifting height above rail: approx. 8 m
Hook travel: 8 m
Radio control
Complete with crane rail
Nodjyx Dyfspfx Adrswi
Listing
Veghel
7,560 km
Gantry crane
BKRS Portaalkraan Gantry CraneDPL-29-2x20
Call
Year of construction: 2023, condition: like new (used), functionality: fully functional, 1x BKRS gantry crane
Working load: 2 x 20,000 = 40,000 kg
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Span: 29 m
Cantilever: 2 x 8.9 m
Lifting height above rail: 10 m
Hook path: 13.5 m
Radio remote control
Cable reel suitable for 90 m
Complete with crane rail UIC60, length: 2x 180 m
Listing
Veghel
7,560 km
Crane
BKRS Portaalkraan Gantry CraneDPL-21-50
Call
Condition: like new (used), functionality: fully functional, Year of construction: 2019, 1x BKRS gantry crane
Rated load: 50,000 kg
Span: 21.5 m
Cantilever: 2 x 6 m
Lifting height above rail: 10 m
Hook travel: 45 m
Radio remote control
Cable drum suitable for 110 m
Complete with crane rail UIC60 length: 2x 110 m
The crane was used for a tunnel boring project
Demag components
Nwedpfx Adjyx Dlhersi
Listing
Veghel
7,560 km
Traverse wagon 130 tons
BKRS Crane Systems / Demag
Call
Condition: used, functionality: fully functional, Year of construction: 2009, Span: 35 m
Load capacity: 130 tons
Including 2 x 75 m rail A75
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Drawings on request / drawing on request
No hoist unit / no hoist
Can be adapted to an overhead/gantry crane
Listing
Langenfeld (Rheinland)
7,673 km
Ring binder
Ricoh RB5020 ring binder suitable forRicoh Pro C7200/8200/C9200 series
Call
Condition: used, functionality: fully functional, With this offer, you are purchasing a used accessory, the ‘Ricoh RB5020 ring binder’.
Item for sale:
1 x Ricoh RB5020 suitable for the following models:
Ricoh Pro C7200 series
Ricoh Pro 8200 series
Ricoh Pro C9200 series
Please check in advance whether this accessory is suitable for your machine.
Condition:
This offer is for a used device, which may show signs of wear
(minor scratches or yellowing).
The device has been tested for functionality
A test binding can be seen in the photo.
Packaging and shipping:
You are welcome to view the device during our business hours. Please make an appointment!
Seaworthy packaging and worldwide shipping available on request!
A functional test will be recorded on video for you before shipping or collection.
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For more information, please feel free to contact us personally.
Listing
Roreto
8,134 km
Splitting Saw Machine
TECNO LOGICA (for BIESSE)Splitter TL.15
Call
Condition: excellent (used), Splitting - Grooving Machine (used to groove and/or split in two parts one unique panel)
- Minimum length of the workpiece: mm 250 (ca.)
- Maximum length of the workpiece: mm 2700 (ca.)
- Minimum width of the workpiece: mm 124 (ca.)
- Maximum width of the workpiece: mm 1200 (ca.)
- Thickness (min./max) of the workpiece: mm 10 / 60 (ca.)
- Max feeding speed: m/min 50 (ca.)
- Total installed power Kw 82
Along with the following groups:
POS. 1 Lower scoring blade unit (Rotax electro-spindle Kw 5) max. blade diameter mm 250 (ca.)
POS. 2 Upper scoring blade unit (Rotax electro-spindle Kw 5) max. blade diameter mm 250 (ca.)
POS. 3 Lower scoring blade unit (Rotax electro-spindle Kw 5) max. blade diameter mm 250 (ca.)
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POS. 4 Upper scoring blade unit (Rotax electro-spindle Kw 5) max. blade diameter mm 250 (ca.)
POS. 5 Lower main blade (sawing) unit (Rotax electro-spindle Kw 11) max. diameter mm 450 (ca.)
POS. 6 Upper main blade (sawing) unit (Rotax electro-spindle Kw 11) max. diameter mm 450 (ca.)
OPTIONAL: soundproof and safety enclosure (cabine)
Listing
Erwitte
7,720 km
Small Tube Metal Laer Cutting Machine
High-speed Cutter for Small TubesG16 3kW - 6kW
Call
Condition: new, functionality: fully functional, power: 3 kW (4.08 HP), Year of construction: 2025, Equipment: air conditioning, cooling unit, G16
Type: Two chucks
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Listing
Erwitte
7,720 km
Laser cutting machine
Laser Cutting Machine for MetalGS-50040LB
Call
Condition: new, functionality: fully functional, Year of construction: 2025, travel distance X-axis: 50,000 mm, travel distance Y-axis: 4,000 mm, input voltage: 380 V, input frequency: 50 Hz, warranty duration: 24 months, Equipment: cooling unit, GS-50040LB (Bevel Cutting) Ultra-Large Format Laser Cutting Machine
40kW Bevel Cutting + 60kW Straight Cutting
Dual Beam, Dual Head, Dual Ultra
Ultra-Large Cutting Area: 50m × 4m
Dual High-Power Cutting Heads – 60kW Straight & 40kW Bevel Cutting
Precision Cutting for Ultra-Thick Plates
Bevel Cutting Performance:
✔ Y-Bevel: 40kW | 20mm Carbon Steel | 1.4m/min
✔ K-Bevel: 40kW | 30mm Carbon Steel | 0.35m/min
✔ V-Bevel: 40kW | 50mm Carbon Steel | 0.2m/min
✔ Straight Cutting: 60kW | 150mm Carbon Steel | 0.3m/min
Applications: Aerospace | Shipbuilding | Bridges | Heavy Machinery
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Listing
Langenfeld (Rheinland)
7,673 km
Digital printing machine
Xerox complete finishing options fordiv. Xerox models Plockmatic
Call
Condition: used, functionality: fully functional, With this offer, you are purchasing a used ‘Xerox full bleed trimming’ finishing system.
Item for sale:
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1 x Xerox complete finishing system for brochure production with the following equipment:
Includes A-FN13 booklet finisher
Includes CZ module A-FN08
Includes 2-page trimming A-GW07
Includes Plockmatic Pro35
WITHOUT IDM
You will receive a complete finishing system for complete brochure production. Plug and play connection to various Xerox machines.
Xerox Versant 3100
Xerox Verdant 4100
Xerox Versant 180
Xerox Versant 280 and more...
Condition:
This offer is for a used device, which may show signs of wear
(minor scratches or yellowing).
The device has been tested for functionality.
Packaging and shipping:
You are welcome to view the device during our business hours. Please make an appointment!
Seaworthy packaging and worldwide shipping available on request!
For more information, please feel free to contact us personally.
Listing
Altena
7,705 km
AIR-OPERATED DOUBLE-DIAPHRAGM AODD PUMPS
Crane Depa ALFA LavalDL, L, P, etc.
Call
Condition: refurbished (used), Various Crane / Depa pumps, various designs and sizes, cpl. refurbished and available at short notice
Nwodsfcy A Iopfx Adrsi
Listing
Nordhausen
7,869 km
Crane hoist
8 DEMAG Fahrantriebe komplett Kran crane
Call
Condition: excellent (used), functionality: fully functional, 8 large, high-power DEMAG travel drives complete with gearbox and travel wheel / DRS wheel block for crane bridge
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From large DEMAG spare parts stock, see also my other offers
Low hours, very good condition, offered due to dismantling of factory hall
Motor: ZBF100 A4 B050
Gearbox: ADK70 QD
Wheel: DRS 315 (manufacturer's new price approx. €3,000.00 net per unit)
Price: €4,490.00 each, complete
For purchase of 8 units: €3,490.00 each net
Info: We have over 20,000 DEMAG items in stock! Check my other offers from stock as well!
Listing
Kotka
7,988 km
Foundry machine
Foundry for saleFoundry Factory
Call
Condition: used, functionality: fully functional, Foundry factory for sale, Property includes 15 buildings, 6 hectares of land.
Located at the Karhula industrial site next to the city of Kotka in southeastern Finland,
Karhulan Valimo was founded in the 1880’s. In 1902, the foundry was merged with a wood
grindery, glass factory, brick factory and engineering works to form the Karhula Oy. In 1915
the Karhula Factories were sold to Ahlström Corporation.
The current Foundry was built in 1960 and in 2000 Ahlström sold the foundry to Sulzer
Pumps Finland.
In 2016 Sulzer Pumps decided to close the foundry and it was sold to Karhulan Foundry
Oy, which was unfortunately declared bankrupt in March 2021. Throughout its history, the
foundry has been known of been able to produce highly demanding castings particularly in
high alloyed steels.
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In 2022 Karhu Assets Oy bought the facilities and machinery of the foundry. Most of the
equipment in the fettling shop has already been sold, while most of the machinery in the
moulding department and meltshop are intact and available.
All heat treatment furnaces, a total of 10 units, are in place and available for sale.
Welcome to visit on the site!
The equipment is located in Kotka, 48600, Finland, and is sold EXW Kotka in its current condition.
The flight time from most European cities to Helsinki, Finland, is approximately 2 hours, and the drive from Helsinki to Kotka via the motorway is about 120 km (1 hour).
You are welcome to visit us in person to inspect the foundry machinery!
Second-Hand Condition: All machines, equipment, and articles are sold in a used condition.
No Warranty, Exchange, or Guarantee: The seller does not offer any warranties or guarantees on the items sold. There is no option for exchange or refund, so the buyer accepts any risks associated with the purchase.
As Inspected On Site: The buyer must inspect the goods on-site before making the purchase, as the sale is final once inspected. The seller will not be held responsible for any defects found after the purchase.
Listing
Czerwionka-Leszczyny
8,392 km
Beverage processing machine
Canning line for beer 10000 cph
Call
Condition: excellent (used), Year of construction: 2021, functionality: fully functional, Complete beer canning line for beer (standard 330 and 500 ml can): 10 000 cans per hour (500ml), fully optimized and calibrated. Only 4 machine operators/workers in filling process. The offer includes: Depalletization, rinser, filles, seamer, RTG level inspection, dryer, carton machine, palletization, CIP, flas pasteurization Padovan, HGB,chiller, compressor etc.
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Listing
Rybnik
8,397 km
Aluminum Shredder – Specialized Machine
Two-shaft shredder for aluminumRS-8A
Call
Condition: new, Year of construction: 2025, functionality: fully functional, overall weight: 2,900 kg, total height: 25,000 mm, total length: 2,710 mm, total width: 1,040 mm, input voltage: 400 V, We offer a high-performance, low-speed two-shaft shredder designed for effective and precise shredding of aluminum materials, including:
🔹 rods
🔹 strands
🔹 wires
🔹 flat bars
🔹 cables
The specially engineered shredding system prevents material from being dragged or crushed — aluminum is efficiently cut, not compressed.
The knife design ensures clean and accurate cutting and eliminates the risk of vertically fed material passing through the chamber unshredded.
The knives are made of certified, wear-resistant steel. The shredder is equipped with gear motors from a reputable manufacturer.
Available motor configurations: 2 × 18.5 kW or 2 × 22 kW.
Fraction size – to be agreed upon with the customer.
Model RS8: working shaft length of 600 mm – identical construction to RS800 and RS1200 models.
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Manufactured in Poland.
Listing
Radom
8,431 km
Die cutter
Conveyor belt for waste removal fromguillotine, three-knife trimmer
Call
Condition: good (used), Conveyor belt for waste removal guillotine, three-knife, automatic die-cutter
Production Germany
Working width 52 cm, conveyor belt length approx. 300 cm.
Discharge of scrap from under the machine directly to the container.
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Listing
Radom
8,431 km
Conveyor belt
Conveyor belt for scraps from guillotineM-Fordersysteme
Call
Condition: good (used), Conveyor belt for scraps from guillotine M-Fordersysteme
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Production Germany
Year of manufacture 2015.
Working width 46 cm, conveyor length approx. 250 cm.
Discharge of trimmings from under the machine directly to the container.
Material pressing roller, upper cover preventing spillage of the excavated material.
Listing
Budapest
8,626 km
Heavy-duty shelf
Separator element for pallet racking sys
Call
Condition: used, Separator element for pallet racking system.
Suitable for frames with a depth of 1000-1050-1100 mm.
Arm length: 500 mm
For a 2700 mm bay with 6 arms, 24 pieces – 67 EUR + VAT/piece
For a 2700 mm bay with 10 arms, 46 pieces – 89 EUR + VAT/piece
For an 1800 mm bay with 7 arms, 4 pieces – 51 EUR + VAT/piece
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If you require shelving or accessories in other configurations or designs, please contact us.
We offer a comprehensive range of new and used shelving, as well as accessories, and will be happy to assist you with your planning.
Additional accessories available include:
Frame, corner, and impact protectors, push-through guards, chipboard, grating, back panel grating, and deep shelf supports.
Shipping:
Please inquire about shipping costs, providing your postal code, location, and the desired quantity of items.
Further service offerings:
Planning, shelving assembly/disassembly, purchase/sale
Subject to changes and errors in technical data, specifications, and prices, as well as prior sale!
Listing
Sremska Mitrovica
8,832 km
Only Sound insulating cabin
for BRUDERER pressesSound insulating cabin
Call
Condition: excellent (used), Sound insulating cabins.
For Bruderer high speed automatic presses.
On stock available cabins for machines:
BSTA 25
BSTA 41
BSTA 50
BSTA 60
BSTA 80
Nwedpfsiw Icbjx Adrei
Cabins sold refurbished, carefully disassembled and packed for transport.
Painted in white and anthracite (or colors requested by customer).
Cabin is equipped with all needed holes for easy use of a Bruderer press.
Front and rear doors with inspection glass.
Air ventilator for climate control on top cover.
For more information don't hesitate to contact us.
We have on stock Bruderer BSTA 25, BSTA 30, BSTA 50, BSTA 110, also Mabu and Schaal automatic punching machines.
Listing
Gabrovo
9,326 km
Cup grinding machine
Sharpening machine for bandsaw bladesZM150
Call
Condition: new, Year of construction: 2024, functionality: fully functional, This powerful machine to meet the requirements of larger woodworking companies, ensuring exceptional sharpening results. Equipped with an electronic tooth counter and an autonomous cooling system. The ZM150 offers precise sharpening while maintainingoptimal operating conditions. With two electric motors, including a 150mm CBNdisk for sharpening and a motor reduction group for precise blade movement,this sharpener delivers outstanding performance.
Power supply voltage - 380-400V
Frequency - 50Hz
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Power - 0.20kVa
Capacity - 65 teeth per min
Blade width - 20 to 100 mm
Tooth pitch - 6 -25mm
Sharpening disc - Profiled 150mm CBN disc
Weight - 115kg
Listing
Gabrovo
9,326 km
Saw blade sharpening machine
Sharpening machine for bandsaw bladesZM 101
Call
Condition: new, Year of construction: 2025, The ZM101 is a pioneering product in our lineup, designed to sharpen sawblades with widths of up to 100 mm at a remarkable rate of 65 teeth per minute. This efficiency enables it to simultaneously service 3-4 bandsaw/sawmill machines. Equipped with an abrasive ceramic disk, the ZM101 can expertly sharpen all teeth with profiles. Its robust construction allows it to perform reliably under the most demanding conditions, making it a favorite among our customers. Additionally, its straightforward design ensures ease of use and low maintenance costs, further enhancing its appeal.
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Technical characteristics:
Maximum length of the blade: 6000 (8000) mm
Minimum width of the blade: 20 mm
Maximum width of the blade: 100 mm
Maximum height of the tooth: 12 mm
Front angle of the tooth: 0÷25°
Tooth pitch:
Profile N: 10, 12.5, 15, 20, 25 mm
Profile WM: 22, 25 mm
Working capacity: 65 teeth/min
Size of the abrasive disc:
Cut-in sharpening, profile N: ø200 x 10 x ø32, ø200 x 13 x ø32 mm
Profile sharpening, profile WM: ø200 x 8 x ø32, ø200 x 10 x ø32 mm
Voltage: 380 V
Power of the electric motors: 0.09 and 0.37 kW
Size:
Without band saw holder (L x W x H): 750 x 550 x 1100 mm
With band saw holder (L x W x H): 2000 (3000) x 1000 x 1100 mm
Listing
Gabrovo
9,326 km
Tooth setter for bandsaw blades
Automatic tooth setter for bandsaw bladeASM6-30
Call
Condition: new, Year of construction: 2025, functionality: fully functional, The ASM 6-30 is a high-speed tooth setter for band saw blades, making it perfect for companies that use different volumes of bandsaw / sawmill blades per day. The machine is very user-friendly and easy to set up, making it the ideal solution for a wide variety of customers with different experiences in the industry.
Voltage - 220V
Frequency - 50Hz
Power - 220V
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Secondary voltage - 24V
Blade width - 15mm-60mm
Tooth pitch - 6-30mm
Accuracy - +- 0.04mm
Blade thickness - 1.2mm
Possible types of tooth set - left, right,straight/right,left,straight
The machine is very user-friendly and easy toset up, making it the ideal solution for a wide variety of customers withdifferent experiences in the industry. Achieving precise tooth setting isessential for straight cutting and extended blade life, and our advancedclamping system delivers an impressive accuracy of 0.04mm. Capable of setting80-120 teeth per minute, the ASM 6-30 enhances your company's efficiency andensures a smooth workflow.
Trust Seal
Dealers certified through Used-Machines

Listing
Gabrovo
9,326 km
Saw blade sharpening machine
Sharpening machine for bandsaw bladesZM 101
Call
Condition: new, Year of construction: 2025, The ZM101 is a pioneering product in our lineup, designed to sharpen sawblades with widths of up to 100 mm at a remarkable rate of 65 teeth per minute. This efficiency enables it to simultaneously service 3-4 bandsaw/sawmill machines. Equipped with an abrasive ceramic disk, the ZM101 can expertly sharpen all teeth with profiles. Its robust construction allows it to perform reliably under the most demanding conditions, making it a favorite among our customers. Additionally, its straightforward design ensures ease of use and low maintenance costs, further enhancing its appeal.
Technical characteristics:
Maximum length of the blade: 6000 (8000) mm
Minimum width of the blade: 20 mm
Maximum width of the blade: 100 mm
Maximum height of the tooth: 12 mm
Front angle of the tooth: 0÷25°
Tooth pitch:
Profile N: 10, 12.5, 15, 20, 25 mm
Profile WM: 22, 25 mm
Working capacity: 65 teeth/min
Size of the abrasive disc:
Cut-in sharpening, profile N: ø200 x 10 x ø32, ø200 x 13 x ø32 mm
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Profile sharpening, profile WM: ø200 x 8 x ø32, ø200 x 10 x ø32 mm
Voltage: 380 V
Power of the electric motors: 0.09 and 0.37 kW
Size:
Without band saw holder (L x W x H): 750 x 550 x 1100 mm
With band saw holder (L x W x H): 2000 (3000) x 1000 x 1100 mm
Listing
Zheng Zhou Shi
11,505 km
Ball mill for powder and mining plant
Mingyuan Ball Mill For Fine PowderPowder grinding mill for coal, silica
Call
Condition: new, functionality: fully functional, power: 55 kW (74.78 HP), Year of construction: 2026, Ball Mill for Powder and Mining Plant: Structure, Function, and Technical Details
A ball mill is a key grinding machine widely used in mining, metallurgy, cement, chemical, and powder-making industries. It is designed to grind various ores and other materials into fine powder through impact and attrition between steel balls and the material inside a rotating cylindrical shell. In mining plants, ball mills are essential for ore beneficiation, preparing materials for flotation, magnetic separation, or leaching processes. In powder production, they ensure uniform particle size and high surface area for further processing.
Working Principle
The ball mill operates on a simple yet effective principle: as the cylindrical shell rotates around its horizontal axis, the grinding media (steel or ceramic balls) are lifted along the inner wall by centrifugal force and friction. When they reach a certain height, they fall freely, striking and grinding the material below. This repeated motion causes both impact and abrasion, reducing the material to the desired fineness. The grinding process can be performed in dry or wet conditions depending on the application.
Structural Composition
A standard ball mill consists of several main components:
Feeding part: Equipped with a feeder or screw conveyor to ensure uniform material input.
Discharging part: Can be grate type or overflow type, depending on the discharge method.
Rotating part: The cylindrical shell made of steel plates, lined with wear-resistant liners.
Transmission system: Includes motor, reducer, small transmission gear, and electrical control.
Grinding media: Steel balls or ceramic balls of different diameters for efficient grinding.
The internal liner design and ball size distribution are optimized to achieve maximum grinding efficiency and minimal energy consumption.
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Technical Details
Typical Specifications:
Feeding size: ≤25 mm
Discharge size: 0.074–0.4 mm
Capacity: 0.65–615 t/h (depending on model and material hardness)
Cylinder speed: 18–38 r/min
Power: 18.5–4500 kW
Liner material: High manganese steel, rubber, or alloy steel
Grinding media load: 30–45% of cylinder volume
Operating Modes:
Dry grinding: Suitable for materials that must remain moisture-free, such as cement clinker, limestone, and quartz.
Wet grinding: Common in ore beneficiation, where water or slurry improves grinding efficiency and particle uniformity.
Application in Mining Plants
In mining operations, ball mills are used after crushing to further reduce ore size and liberate valuable minerals. They are integrated into grinding circuits with classifiers, hydrocyclones, and flotation systems. The ground material is classified by size, and oversized particles are returned to the mill for regrinding. This closed-circuit system ensures consistent product fineness and efficient energy use.
Common Applications:
Gold, copper, iron, and zinc ore grinding
Cement clinker and slag processing
Silicate and ceramic powder production
Coal and mineral powder preparation
Conclusion
A ball mill is an indispensable piece of equipment in both powder production and mining beneficiation plants. Its ability to grind materials into fine, uniform particles makes it vital for downstream processes such as flotation, sintering, and chemical reactions.
Listing
Zheng Zhou Shi
11,505 km
Filtration system / mining separator
Ore beneficiation plant for gold copperOre dressing plant for zinc lead nickel
Call
Condition: new, Year of construction: 2026, functionality: fully functional, power: 400 kW (543.85 HP), Ore Beneficiation Plant for Nickel, Copper, Zinc, Graphite, Gold, Silver, Chrome, Quartz/Silica
In today’s competitive mining and metallurgical industry, maximizing ore value is critical. Our state-of-the-art Ore Beneficiation Plant offers a complete solution designed to increase the content and quality of raw ore, transforming it into a marketable product ready for further processing or direct sale. Engineered for a wide range of minerals—including nickel, copper, zinc, graphite, gold, silver, chrome, and quartz/silica—our ore beneficiation plant delivers exceptional performance, efficiency, and reliability.
Introduction
Mining operations around the world face the challenge of processing ores that are often low in grade and require extensive refinement to be economically viable. Beneficiation—the process of increasing the concentration of valuable minerals—plays a vital role in reducing operational costs, enhancing recovery, and ultimately, ensuring profitability. Our ore beneficiation plant, also known as an ore processing plant or mine dressing plant, integrates advanced technology and robust engineering to deliver an efficient crushing, grinding, classifying, and separation process.
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Designed to handle a wide variety of ores, our plant is the ideal solution for mining companies looking to optimize their extraction and processing operations. Whether you’re processing nickel, copper, zinc, graphite, gold, silver, chrome, or quartz/silica, our plant provides the versatility and performance needed to meet today’s rigorous industrial standards.
## What Is an Ore Beneficiation Plant?
An ore beneficiation plant is a facility where raw ore is processed to improve its quality and increase the concentration of valuable minerals. The plant typically includes several stages of processing:
1. Crushing: The raw ore is reduced in size to allow for more efficient downstream processing.
2. Grinding: Further size reduction to liberate the valuable minerals from the waste material.
3. Classifying: Separation of the ore into different size fractions using screening and hydrocyclones.
4. Separation: Employing various physical processes such as magnetic separation, flotation, or gravity separation to concentrate the valuable minerals.
5. Dewatering: Removal of excess water to prepare the concentrate for further processing or shipping.
This integrated process not only boosts the metal content but also minimizes waste, thereby improving overall cost efficiency and environmental sustainability.
Listing
Zheng Zhou Shi
11,505 km
Powder grinding mill
ball mill for mining &fine powder makingsilica/Barite/limestone powder plant
Call
Condition: new, Year of construction: 2026, power: 300 kW (407.89 HP), Ball Mill for Mining & Fine Powder Making:
A ball mill is a fundamental grinding device widely used in mining, metallurgy, cement, and chemical industries. It is designed to grind ores and other materials into fine powder through impact and attrition between steel balls and the material inside a rotating cylindrical shell. In mining plants, ball mills are essential for ore beneficiation, while in powder-making industries, they ensure uniform particle size and high surface area for further processing.
Working Principle
The ball mill operates on the principle of impact and friction. As the cylindrical shell rotates around its horizontal axis, the grinding media—usually steel or ceramic balls—are lifted along the inner wall by centrifugal force and friction. When they reach a certain height, they fall freely, striking and grinding the material below. This repeated motion breaks down the material into fine particles. The process can be carried out in dry or wet conditions depending on the application.
Structural Composition
A standard ball mill consists of several main components:
Feeding part: Ensures uniform material input through a feeder or screw conveyor.
Discharging part: Can be grate type or overflow type, depending on the discharge method.
Rotating part: The cylindrical shell made of steel plates, lined with wear-resistant liners.
Transmission system: Includes motor, reducer, small transmission gear, and electrical control.
Grinding media: Steel or ceramic balls of various diameters for efficient grinding.
The internal liner design and ball size distribution are optimized to achieve maximum grinding efficiency and minimal energy consumption.
Technical Details/Typical Specifications:
Feeding size: ≤25 mm
Discharge size: 0.074–0.4 mm
Capacity: 0.65–615 t/h (depending on model and material hardness)
Cylinder speed: 18–38 r/min
Power: 18.5–4500 kW
Liner material: High manganese steel, rubber, or alloy steel
Grinding media load: 30–45% of cylinder volume
Operating Modes:
Nodpfx Adoq Ngafsrswi
Dry grinding: Used for materials that must remain moisture-free, such as cement clinker, limestone, and quartz.
Wet grinding: Common in ore beneficiation, where water or slurry improves grinding efficiency and particle uniformity.
Application in Mining and Powder Production
In mining operations, ball mills are used after crushing to further reduce ore size and liberate valuable minerals. They are integrated into grinding circuits with classifiers, hydrocyclones, and flotation systems. The ground material is classified by size, and oversized particles are returned to the mill for regrinding. This closed-circuit system ensures consistent product fineness and efficient energy use.
In fine powder production, ball mills are used to produce materials such as silicate, ceramic powder, refractory materials, and chemical raw materials. The uniform particle size achieved by ball milling enhances product quality and performance in downstream applications.
Conclusion
A ball mill is an indispensable piece of equipment for both mining and fine powder making. Its ability to grind materials into fine, uniform particles makes it vital for ore beneficiation and industrial powder production. With flexible configurations, high efficiency, and reliable operation, modern ball mills provide a cost-effective and energy-efficient solution for large-scale grinding, ensuring consistent quality and productivity across diverse applications.
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