Mining and Minerals

With decades of experience serving the mining and minerals industries, John Crane understands the need for greater equipment reliability and maximum performance in harsh environments. To solve these challenges, we engineer application-specific components and offer a wide breadth of services aimed at reducing maintenance costs and lowering total cost of ownership. Our 200+ rapid-response facilities provide comprehensive repair and support services across the globe.

High pressure filtration

Our automatic high-pressure filter units and the automatic double back-flush filters are systems that serve for the filtration of freshly prepared hydraulic emulsions directly behind the high-pressure pump. These filter systems are designed for working pressures of 350 bar and higher.

Machine part

Filtration in hydraulic circuits

In order to ensure the failure-free operation of hydraulic systems underground, it is essential that the medium is not simply filtered at one point, but is continually cleaned throughout the entire circuit. Thus, return filters, that clean the fluid coming from the mining machines, are essential parts of the circuit. Return filtration is often carried out in two stages that are individually adapted to the respective application. In the first stage, an economical and effective pre-filter retains the larger part of any impurities, while in the second, our Long-Life elements ensure the provision of a fluid that meets the specified level of purity.

In addition to high-pressure and return flow filtration, bypass filters help to keep hydraulic fluid in the tank clean and in motion at all times.

Machine part

Water filtration

Water is used underground for preparing hydraulic fluids from concentrates, for cooling, and for dust suppression during face support and coal mining. Again, Seebach filter systems are used, each of which is adapted to the respective application and volume flow.

Machine part

Sprinkling water filtration

A shearer loader must not be operated without continuous water sprinkling, otherwise the system will overheat and unacceptable dust generation will occur. At this point particle filtration is indispensable in order to ensure the continuous functionality of the sprinkling system and to prevent blockage of the nozzles.

Filters for sprinkling water are manually or automatically backflushable systems in a compact design, which are ideally adapted to hydraulic conditions and pressure at the point of use. This also applies to the sprinkling water filtration in the new Water Spray Technology, developed at Southern Illinois University Carbondale (USA), and has just entered the market. This new sprinkling water system can reduce generated coal dust by up to 60 %.

In addition to sprinkling, water is also used for cooling the shearer loader’s two motors. The operability of both motors, one of which drives the shearer drum and the other the machine itself, is maintained by effective water filtration. We deliver filters for this application that are individually adapted to the spatial conditions in the motor compartments. High volume flows through filter surfaces with small external dimensions is achieved through the use of integrated flow optimization.

Machine part

Mine water filtration

Mine water originates from a variety of sources and emerges in different amounts depending on location and depth, the ground water situation, and the rainfall above ground. Mine water contains large amounts of minerals and is often very acidic. In addition, it contains suspended solids and, potentially, organic substances. Mine water is treated above ground in a multi-stage process in order to meet existing effluent limits or cleaned sufficiently for it to be re-used as process water in the mine. Pre-filtration of mine water above ground has proven to be an effective means of reducing the loading on treatment plants underground.

Machine part

Filtration at the planer

Planers, scalping mining machines, are employed as an alternative to shearer loaders, which cut the material to be extracted. Water is used for cooling and dust suppression here as well. Safe continuous operation is ensured by means of inline filters, as well as by manually or automatically operated back-flush filter systems.

Machine part

Filtration in cooling circuits

Mining at great depths, together with high engine outputs in mining machines, leads to enormous heat generation that has to be counteracted by powerful cooling systems. Large amounts of cold water are pumped at high pressure from the cooling plant located above ground into the mine shaft over a long distance.  The circulating cooling water is filtered in a by-pass to ensure uninterrupted operation with contaminant-free cooling water and to prevent flocculation or the build-up of deposits in the pipe system.

Machine part

Tank filtration

In addition to high-pressure and backflow filtration, bypass filters at the hydraulic oil and finished hydraulic fluid tanks help to ensure that the fluids in the tanks are kept clean and in motion. Likewise, the water and hydraulic oil involved are filtered before they enter the fluid mixing plant.

Machine part

Filtration at the shearer loader

A shearer loader must not be operated without continuous water sprinkling, otherwise the system will overheat and unacceptable dust generation will occur. At this point particle filtration is indispensable in order to ensure the continuous functionality of the sprinkling system and to prevent blockage of the nozzles.

Filters for sprinkling water are manually or automatically backflushable systems in a compact design, which are ideally adapted to hydraulic conditions and pressure at the point of use. This also applies to the sprinkling water filtration in the new Water Spray Technology, developed at Southern Illinois University Carbondale (USA), and has just entered the market. This new sprinkling water system can reduce generated coal dust by up to 60 %.

In addition to sprinkling, water is also used for cooling the shearer loader’s two motors. The operability of both motors, one of which drives the shearer drum and the other the machine itself, is maintained by effective water filtration. We deliver filters for this application that are individually adapted to the spatial conditions in the motor compartments. High volume flows through filter surfaces with small external dimensions is achieved through the use of integrated flow optimization.

Machine part

Return filtration

In order to ensure the failure-free operation of hydraulic systems underground, it is essential that the medium is not simply filtered at one point, but is continually cleaned throughout the entire circuit. Thus, return filters, that clean the fluid coming from the mining machines, are essential parts of the circuit. Return filtration is often carried out in two stages that are individually adapted to the respective application. In the first stage, an economical and effective pre-filter retains the larger part of any impurities, while in the second, our Long-Life elements ensure the provision of a fluid that meets the specified level of purity.

Machine part

Last-chance filtration

As the name indicates, Last-Chance filters offer the last opportunity for filtration directly prior to the inflow into the component to be protected They are installed into the pressure pipe directly in front of the control valves.

Machine part

Filtration at the safety shields

In underground mining, all excavated hollow spaces must be supported against the soil or rock layers above them to prevent collapses and danger to people and machinery. In modern mines, hydraulically-operated, self-propelled roof support shields are used, which follow the mining machine and are directly adjusted to the respective height of the seam.

Depending on the length of the shield alignment the supports can be controlled hydraulically, electro-hydraulically, or electrically. All hydraulic fluids used in the roof support shields are continuously filtered. This is done by in-line filters and back-flush filters which are applied directly at the point of use. The selection of filters and the type of back-flushing are individually adapted to the required face height.

Machine part

Valve filtration

As well as the Last-Chance filters, bypass-filters are also used to protect the fluid.in hydraulic circuits. This means that all valves and sensitive components are protected against impurities that could cause abrasion or blockages.

Machine part

Mining and Minerals Industry Services

John Crane services can help extend the life of mining and mineral applications and increase production by limiting unplanned downtime and identifying opportunities for improvement:

Equipment Service

John Crane Equipment Service assists with critical systems checks and plant equipment maintenance as well as repair, removal and reinstallation services.

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Reliability Support

John Crane Reliability Support services assess equipment reliability and performance, analyze root cause failures and recommend strategies for improvement.

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Asset Management

John Crane Asset Management software offers customers a holistic view of their current systems to help spot unleveraged opportunities.

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Training

John Crane provides a wide range of training courses that cover the correct procedures for installing, operating and maintaining equipment components.

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Mining and Minerals Products

Showing 1–22 of 22 products

Type 5840

Cost-effective Cartridge Slurry Seal

Type 5840 Slurry Seals

Our Type 5840 single-cartridge seal encompasses many of the advantages associated with heavy-duty seal design, encased in a cost-effective...

Type 5860

Heavy-duty Cartridge Slurry Seal

Type 5860 Slurry Seals

Available as a single or double seal, the Type 5860 is designed to operate in the harshest abrasive slurry environments....

Type 5870

Flushless Cartridge Seal

Type 5870 Slurry Seals

The Type 5870 is a single, balanced, O-ring pusher cartridge seal. It is designed to operate unsupported in all paper...

Type 37FS

Heavy-duty Split Elastomer Bellows Seal for Agitators, Mixers and Pumps

37FS lg

The Type 37FS fully split mechanical seal helps significantly reduce maintenance on larger, difficult-to-seal equipment. It is recommended for use on...

Type 37FSB

Heavy-duty Balanced Split Elastomer Bellows Seal for Agitators, Mixers and Pumps

The Type 37FSB fully split mechanical seal helps significantly reduce maintenance on larger, difficult-to-seal equipment. It is recommended for use on...

Type 5610/5610Q/5610L

Universal Cartridge Seal Family — Single Cartridge O-Ring Seal

5610 lg

The first truly universal cartridge seal, the Type 5610 will change your approach to sealing. Since the 5600 Series components...

Type SB1

Single, Heavy-duty Cartridge Seals

SB1A V3

The Safeseal Type SB1 is a single-cartridge seal for use with clean fluids and lubricants. It is versatile and...

Type SB2

Heavy-duty Dual-cartridge Seals

The Safeseal Type SB2 is a dual-cartridge seal. Its double-balanced design ensures the reliability and longevity of the...

Type FFET

Single Cartridge O-ring Seal

FFET lg

Designed to reduce installation time and errors, the compactness of the FFET cartridge seal ensures that it will fit all ANSI...

Type 4111

Single-use Elastomer Bellows Cartridge Seal

T4111 Single-use Elastomer Bellows Cartridge Seal

Suitable for DIN and ANSI pumps using aqueous solutions, engineered to simplify installation, reduce maintenance and save on overall costs.

K1730/K1760/K1761/K1771

Abrasive Service Aramid and Meta-aramid Packings

k1730 k1760 k1761 k1771 lg

John Crane styles K1730, K1760, K1761 and K1771 are constructed of high-tensile strength, abrasion-resistant fibers. Servicing a wide range of...

1345/1349/1349HC

Abrasive Service Polyimide Packings

1345 1349 lg

John Crane styles 1345, 1349 and 1349HC are constructed of high-tensile strength, abrasion-resistant fibers. These packings service a wide...

C1061/C1064/C1072/1993

Abrasive, Chemical and Extrusion-resistant Packings

c1061 c1064 c1065P c1072 lg

John Crane styles C1061, C1064, C1072 and 1993 are ideal for abrasive services where packing extrusion and sleeve or shaft...

894/1336/1340

General-service Braided Graphite Packings

1320 1336 1340 lg

John Crane styles 894, 1336 and 1340 are cost-effective graphite general-service packing constructed of the highest-quality synthetic fibers and...

1330/1332/1335/C1061

General-service Braided Synthetic Packings

1330 1332 1335 c1061 lg

John Crane styles 1330, 1332, 1335 and C1061 are cost-effective general-service packings constructed of the highest-quality synthetic fibers and lubricants....

A Series Close-coupled Arrangement

Close-coupled Wrap-fit Urethane Element Coupling

IMG1901

John Crane A Series couplings provide a solution to one of the most persistent and troublesome problems facing maintenance personnel: periodic...

L Series

General-purpose All-metal Membrane Coupling

L Series Disc Couplings

L series range of membrane couplings has been specifically designed to provide a cost-effective solution for demanding industrial applications....

Safejet

Compact in-line seal water filter

Safejet

SafeJet is an automatic seal water filter. Its operation is based on “flow-through” filter technology, which utilizes reliable laminar filtering...

Safeunit™ Ultima

Seal Water Control and Monitoring System

IMG1175

Safeunit Ultima is specially designed to control seal water flow and pressure in extreme conditions. This makes it ideal for...

Smartflow

Intelligent Seal Water Control System

IMG203

Smartflow intelligent seal water control system uses seal water only when the mechanical seal truly requires cooling. The purpose of...

Process Filtration

Often your very method of production will introduce contamination to your process, whether from imperfect ingredients, necessary reagents or process equipment, and in order to…

Filter Skids

Seebach filter skids are used in underground mining. These are filters installed on standard consoles that are built completely with pipes or hoses so they…

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