What types of dust and fumes are generated in foundry processes?

Foundry environments generate silica dust from sand reclamation and shakeout operations, metal fumes and particulates from induction furnaces and melting shops, thermal decomposition products from pouring and cooling lines, abrasive dust from grinding and shot blasting, and fine metallic particles from CNC machining operations. Each process stage requires specific filtration solutions.

Which Bomaksan products are recommended for foundry dust extraction?

Bomaksan offers PKFC Series and PLTF Series for melting shops and induction furnaces, PKF Series and VERTY Series for pouring and cooling lines, PLTF, PKF and ECOG Series for sand reclamation and shakeout, LINE Series and ECOG Series for grinding and shot blasting, and YBFpro, DT.YBF and ALVERpro OIL Series for machining and CNC operations.

Can one dust collection system handle multiple foundry process stages?

Yes. Bomaksan designs centralized and decentralized dust collection systems that can serve multiple process points within a foundry. Ducting networks are engineered to balance airflow across shakeout, grinding, and machining stations simultaneously while meeting occupational exposure limits.

What filtration efficiency is required for foundry silica dust?

Crystalline silica is classified as a Group 1 carcinogen. Filtration systems used in foundry environments must achieve filter efficiency of H13 or higher (HEPA class), capturing particles down to 0.3 microns. Bomaksan systems comply with EN 60335-2-69 and applicable ATEX directives where explosive dust is present.

How long does it take to install a foundry air filtration system?

Installation time depends on the scale of the system and whether ducting infrastructure exists. A single-point extraction unit for a CNC or grinding station can typically be commissioned within one to two days. Full centralized systems for large foundries, including ducting design and installation, usually require two to six weeks. Bomaksan provides on-site feasibility assessment and project planning.

Foundry Processes

Foundry Dust Collection & Fume Extraction Systems

From melting and pouring through to grinding and CNC machining, foundries generate hazardous dust and fumes at every stage of production. Bomaksan provides end-to-end dust and fume extraction systems for the complete foundry process — from system design and manufacturing through to installation and commissioning, from a single source.

The Challenge

Foundry environments generate four distinct categories of airborne hazard. Each requires a different extraction approach.

Metal Particulate & Fumes

Heavy metal fumes released during furnace operations — peak concentrations occur at charging and skimming stages.

Hazardous Gases & Process Emissions

Gaseous emissions generated during binder decomposition and sand processing operations — directly affecting compliance requirements and worker health.

Respirable Silica (RCS)

Fine silica dust released during shakeout and sand reclamation — one of the most hazardous industrial dusts with no safe exposure threshold.

Oil Mist & Coolant Aerosols

Fine oil mist droplets and coolant aerosols generated during CNC machining — cannot be effectively controlled through general ventilation alone.

99%+

Filtration Efficiency

Process Stages Covered

Turnkey

Design to Commissioning

Process Stages

Induction Furnaces — Melting Shop Extraction

Furnace Operations

Melting Shops & Induction Furnaces

Induction furnaces are the highest fume generation point in any foundry. Peak concentrations occur during charging and skimming — the extraction system must be sized for these instantaneous peak loads.

Continuous extraction across all phases: charging, melting, skimming and pouring
Hydraulic furnace hood integration, developed in coordination with OEM furnace manufacturers
Jet-pulse automatic filter cleaning — no production stoppage required for filter maintenance
Central filter systems engineered to meet EU IED emission limits

Bomaksan works directly with OEM furnace manufacturers to design the extraction system as an integrated part of the existing equipment — not a retrofit. PKFC Series and PLTF Series high-capacity central filters are sized specifically to each furnace type and operating cycle.

Products PKFC Series PLTF Series Extraction Arms

Casting Operations

Pouring & Cooling Lines

Liquid metal pouring releases intense bursts of heavy metal aerosols and combustion gases over a short period. The extraction system must be sized for these peak emission events.

Heavy metal aerosol capture at the pour point — before dispersing into the workshop
Binder combustion gases contained at source
Push-pull ventilation systems for large casting halls
Continuous extraction integration along cooling conveyors

Bomaksan modular baghouse filter systems are sized to the peak emission loads of pouring lines. Custom engineering solutions are available for large-scale casting halls.

Products PKF Series VERTY Series Custom Systems

Sand Processing

Sand Reclamation & Shakeout

Shakeout and mechanical sand reclamation release RCS — one of the most hazardous industrial dusts with no safe exposure threshold. Residual dust in reclaimed sand degrades binder quality and increases casting defect rates.

RCS dust captured at source — before reaching the breathing zone
Cleaner sand improves resin bonding quality and reduces additive consumption
Airflow balance maintained to protect sand grain integrity
Integrated design developed alongside OEM sand plant manufacturers

Bomaksan works with OEM sand reclamation plant manufacturers to integrate extraction directly into the process line. The result: cleaner sand, lower additive costs and a compliant working environment.

Products PLTF Series PKF Series ECOG Series

Surface Treatment

Grinding, Shot Blasting & Surface Treatment

Grinding and shot blasting produce a continuous, high-volume stream of metallic dust. This dust re-settles on finished casting surfaces, directly compromising surface quality.

Downdraft Tables for small casting grinding — dust captured at source, directly beneath the workpiece
Extraction Arms where flexible positioning is required
Compact central filters for large castings and cell-based installations
Solutions for both robotic and manual grinding applications

LINE Series and ECOG Series compact filters maintain filtration efficiency while grinding continues uninterrupted, thanks to automatic jet-pulse self-cleaning. Plug-and-play installation.

Products Downdraft Tables Extraction Arms LINE Series ECOG Series

CNC Operations

Machining & CNC Operations

CNC machining generates fine oil mist and coolant aerosols that cannot be effectively controlled through general ventilation alone. These particles coat machine internals, contaminate finished surfaces and create a cumulative respiratory hazard.

Sub-20 micron droplet capture via multi-stage high-efficiency filtration
Machine-mounted unit or central system — selected to suit the facility layout
No external exhaust ducting required — clean air returned directly to the workshop
Captured oil collected for proper disposal

YBFpro Series and DT.YBF Series oil mist filter units are developed for CNC turning, milling and drilling operations on cast components. Scalable from individual machine cells to multi-machine central systems.

Products YBFpro Series DT.YBF Series ALVERpro OIL

Why Bomaksan

Not just a filter supplier — a partner who understands the full process, works in coordination with OEM manufacturers, and takes end-to-end ownership.

OEM Partnership

Direct coordination with furnace and sand plant OEM manufacturers. The extraction system is designed as an integrated part of existing equipment — not added on afterwards.

Jet-Pulse Self-Cleaning

Filters clean themselves automatically while running. 24/7 continuous extraction without unplanned downtime — keeping pace with the foundry production rhythm.

Modular & Scalable

The PLTF Series modular design allows additional modules to be added as capacity grows — without replacing existing infrastructure.

Turnkey Project Management

From system design and manufacturing through to installation and commissioning — all managed from a single source, with no multi-supplier coordination overhead.

CE Certified

All Bomaksan products carry CE certification. Full technical documentation demonstrating compliance with the relevant machinery directives and emission standards is provided.

Custom Engineering

For large-scale or non-standard applications — wet scrubbers, push-pull ventilation and fully bespoke system engineering.

Long-Term Partnership

A relationship that does not end at product delivery — a collaboration that continues for the working life of the system.