+1 308 465 1950
ATF Crusher Parts
Revestimentos de Carcaça para Moinho de Bolas | ATF

Peças para Moinho de Bolas

Revestimentos de Carcaça para Moinho de Bolas | ATF

Revestimentos de carcaça para moinhos de bolas em borracha, cromo-molibdênio (325-400 BHN) e borracha-aço. Conforme diâmetro, velocidade e carga.

Revestimentos da carcaça Revestimentos de extremidade Grelhas

Especificações principais

Steel Grades
Cr-Mo (ASTM A532), High-Chrome White Iron
Steel Hardness
325–400 BHN (Cr-Mo), 600+ BHN (HCWI)
Rubber Hardness
60–70 Shore A (Natural Rubber)
Liner Weight Range
150–2,500 kg per piece
Profile Types
Wave, Hi-Lift, Lo-Lift, Stepped, Custom
Mill Diameter Range
1.8 m – 7.9 m (6 ft – 26 ft)
Typical Campaign Life
6–18 months (ore-dependent)
Installation
Bolt-in with T-head or J-hook bolts
Shell Liners

Ball Mill Shell Liners: Chamber Protection and Charge Motion Control

Shell liners protect the mill shell from wear while controlling the trajectory of the grinding media charge. The liner profile directly affects grinding efficiency—high-lift profiles cascade the ball charge for aggressive impact grinding of coarse feed, while wave and low-lift profiles promote cataracting and rolling motion for attrition grinding of finer material. Proper liner selection optimizes grind efficiency, reduces specific energy consumption (kWh/t), and extends both liner and mill life. ATF manufactures shell liners from ASTM A532 chrome-moly steel at 325–400 BHN, high-chrome white iron exceeding 600 BHN, and premium natural rubber at 60–70 Shore A hardness for noise-sensitive or corrosive applications. Each liner set is dimensionally verified to ensure correct fit across the full range of mill diameters from 1.8 m to 7.9 m.

Material selection balances wear resistance against impact loading, corrosion conditions, and operational priorities such as noise control and maintenance scheduling. Chrome-moly steel provides excellent wear life in most primary and secondary ball mill applications and remains the cost-effective standard for hard, abrasive ores. Rubber liners reduce noise by up to 15 dB and are preferred in regrind circuits processing soft to medium-hard ores with small media sizes under 40 mm. Rubber-steel composite systems combine wear-resistant steel lifter bars with rubber shell plates, delivering the charge-lifting performance of steel with the noise damping and corrosion resistance of rubber. ATF engineers analyse mill speed, ball charge percentage, ore abrasion index (Ai), and Bond Work Index (Wi) to recommend the optimal material and profile combination for each application.

Chrome-Moly Steel
Rubber Options
Custom Profiles
Ball mill shell liners in chrome-moly steel manufactured by ATF

Chrome-moly steel shell liners with optimised lift profiles for ball mill grinding circuits

Key Features of ATF Ball Mill Shell Liners

Profile Optimization

Liner profiles engineered for your specific mill diameter, speed, and grinding requirements. Wave, high-lift, and custom profiles available.

Chrome-Moly Steel

High-chrome molybdenum alloy steel (325-400 BHN) for maximum wear life in abrasive grinding applications.

Rubber Liners

Premium rubber liners for noise reduction and applications where rubber performs equal to or better than steel.

Composite Systems

Rubber-steel composite systems combining wear-resistant steel lifters with rubber shell protection.

Mill-Specific Design

Liners designed for your specific mill diameter and length. Complete sets with consistent quality.

Bolt-In Installation

Standard bolt-in designs for efficient installation during mill relining shutdowns.

Material Options for Shell Liners

Shell liner material selection depends on grinding application, mill size, media type, and operational priorities including noise levels and wear life.

Chrome-Moly Steel (Cr-Mo)

Dureza:325-400 BHN
Aplicação:Standard steel shell liners for most ball mill applications
Notas:Excellent wear resistance, cost-effective

High-Chrome White Iron

Dureza:600+ BHN
Aplicação:Abrasive grinding with fine media
Notas:Maximum hardness for abrasive applications

Natural Rubber

Dureza:60-70 Shore A
Aplicação:Secondary and regrind mills, noise-sensitive installations
Notas:Reduced noise, good performance with fine media

Rubber-Steel Composite

Dureza:Steel: 400 BHN, Rubber: 65 Shore A
Aplicação:Combined benefits of steel and rubber
Notas:Steel lifters with rubber shell plates

Note: Liner material should be selected based on complete application analysis including ore hardness, media size, mill speed, and required grind fineness.

Need Ball Mill Shell Liners?

Send your mill specifications for a quote with material and profile recommendations.

Request a Quote

OEM Compatibility

ATF manufactures shell liners for all major ball mill brands and sizes. Custom profiles available for specific grinding requirements.

Metso Outotec

  • Ball Mills (all sizes)

FLSmidth

  • Ball Mills (all sizes)
  • ABON Mills

ThyssenKrupp

  • Ball Mills (all sizes)

CITIC

  • Ball Mills (all sizes)

Outotec (legacy)

  • Ball Mills (all sizes)

Custom Mills

  • All ball mill makes and sizes
Perguntas frequentes

Shell Liners Perguntas frequentes

Encontre respostas para perguntas comuns sobre shell liners materiais, seleção, manutenção e pedidos. Não encontrou o que procura?

Contatar nossa equipe
How long do ball mill shell liners last?
Shell liner life varies from 6 to 18 months depending on ore hardness (Bond Abrasion Index), media charge volume (typically 30–40% of mill volume), mill speed as a percentage of critical speed, and the liner material grade. Chrome-moly steel liners conforming to ASTM A532 Class II typically achieve 8–14 months in copper-gold concentrator circuits processing ore with an Ai of 0.3–0.5. High-chrome white iron liners (600+ BHN) may extend campaign life by 20–40% in highly abrasive silica-rich ores. Operators should track liner thickness at multiple circumferential and axial positions during every scheduled inspection, using ultrasonic thickness gauges for accurate readings. Plotting wear rate trends allows reliable prediction of replacement timing, helping maintenance planners schedule relining during planned shutdowns rather than forced outages. ATF provides liner wear monitoring templates and can assist with campaign life optimization analysis.
When should I choose rubber over steel liners?
Rubber liners (60–70 Shore A natural rubber) are the preferred choice when noise reduction is a priority, as they reduce mill noise emissions by up to 15 dB compared with steel. They perform exceptionally well in secondary and regrind ball mills processing soft to medium-hard ores with a Bond Work Index below 14 kWh/t and using small grinding media under 40 mm diameter. Rubber also resists corrosion in acidic or chemically aggressive slurry environments where steel would suffer accelerated attack. However, steel liners—particularly chrome-moly steel at 325–400 BHN—remain superior for primary ball mills using large media (50–90 mm) on hard, abrasive ores. Rubber-steel composite systems offer an effective middle ground, pairing steel lifter bars for charge lifting with rubber shell plates for corrosion resistance and noise reduction. ATF engineers evaluate your specific ore properties, media size, and environmental constraints to recommend the optimum material.
What liner profile should I use?
Liner profile selection is driven by your target grind size, mill speed (expressed as a percentage of critical speed, typically 70–78% for ball mills), and media charge size. High-lift profiles with steep face angles (15–25 degrees from radial) are suited to coarse grinding circuits using large 60–90 mm media, as they generate cataracting motion for high-energy impacts. Wave or low-lift profiles with shallower face angles promote cascading motion ideal for fine grinding and regrind applications with smaller media. The lifter-to-shell-plate ratio also matters—wider spacing between lifters increases the cascading zone while tighter spacing enhances cataracting action. ATF uses DEM (Discrete Element Method) simulation data and field experience across hundreds of mill installations to recommend the optimal profile geometry, including lifter height, face angle, spacing, and shell plate width for your specific grinding duty.
How is relining time minimized?
Efficient relining depends on thorough preparation and logistics management. Key factors include pre-staging liners at the mill platform with verified dimensions and piece markings, organising bolt hardware (T-head or J-hook bolts, typically Grade 8.8 or 10.9) in labelled kits per ring row, ensuring trained crews are briefed on the liner installation sequence, and having certified lifting equipment such as liner handlers or robotic relining machines (e.g., RME THUNDERBOLT or Russell MHS) positioned and tested before shutdown. A well-planned reline for a 5.5 m x 8.5 m ball mill can be completed in 48–72 hours using a robotic handler, compared with 5–7 days for fully manual relining. ATF supports relining planning by providing detailed liner arrangement drawings, piece weight schedules, and recommended installation sequences. Pre-delivery dimensional inspection ensures every liner piece fits on first attempt, eliminating costly rework during the shutdown window.

Related Ball Mill Parts

End Liners

Feed and discharge end liners for ball mills.

Saiba mais

Lifter Bars

Steel and rubber lifter bars for charge control.

Saiba mais

Grates

Discharge grate panels for overflow and grate mills.

Saiba mais

Conteúdo técnico revisado pela equipe de engenharia da ATF | Especificações metalúrgicas verificadas conforme normas ASTM/ISO

Get a Quote for Ball Mill Shell Liners

Provide your mill specifications for quotation with optimized liner recommendations.

Contact ATF Engineering
25+
Years Experience
Custom
Profiles
100%
Fit Guarantee

Solicite um Orçamento Gratuito Hoje

Nossa equipe de engenharia responde em 24 horas com especificações detalhadas, recomendações de materiais e preços competitivos.

Resposta em 24 Horas Ajuste OEM Garantido Envio Mundial
Obter Orçamento Ligar +1 308 465 1950