Malt Kilns (Malthouse Drying Kilns) — Asbestos Exposure Crosswalk
What This Equipment Is
A malt kiln is a grain-drying chamber used in commercial malthouses to dry germinated barley (green malt) into finished malt for brewing. Green malt is loaded onto a perforated kiln floor, and hot air is drawn through the bed over many hours at progressively rising temperature to drive off moisture and develop the malt’s color and flavor profile.
Large commercial malthouses operate kilns measured in tons of malt per batch. The kiln structure is brick-walled or insulated-metal, fitted with a direct-fired or indirect-heated furnace, a fan system delivering drying air through the bed, and ductwork removing humid exhaust. The furnace, ductwork, and casing historically used asbestos-bearing refractory and insulation.
Asbestos Products Historically Used Around Malt Kilns
| Product Category | Where on the Kiln | Notes |
|---|---|---|
| Refractory brick / castable | Furnace lining | See Refractory Brick |
| Block insulation | Kiln shell, ductwork | Calcium silicate, magnesia |
| Pipe covering | Steam supply (indirect-heat designs) | Magnesia, calcium silicate |
| Ductwork insulation | Hot drying-air ducting | Block insulation, asbestos cloth |
| Burner-front shielding | Around burner penetrations | Asbestos millboard |
| Gaskets | Furnace access doors, ductwork flanges | Asbestos sheet and millboard |
Why Malt-Kiln Work Was an Asbestos Exposure Pathway
Malt-kiln maintenance involves refractory patching, ductwork repair, fan rebuild, and routine cleaning of grain residue from the kiln internals. Refractory turnarounds are infrequent but intensive. Burner-front service is recurring as fuel-system components wear.
Manufacturers Named in Litigation Involving These Products
- A.P. Green Refractories — refractory products
- Harbison-Walker Refractories — refractory products
- Johns-Manville — insulation, ductwork covering, millboard
- Owens-Corning / Fibreboard — insulation
- Garlock Sealing Technologies — gaskets
Documented Product References
Images sourced from publicly available product-identification reference materials. Inclusion does not constitute a finding of liability against any company.
Trust Funds That May Apply
- A.P. Green Industries Asbestos PI Settlement Trust
- Harbison-Walker Refractories / RHI Asbestos PI Trust
- Manville Personal Injury Settlement Trust
- Owens-Corning / Fibreboard Asbestos PI Trust
Trades Most Exposed at Malt-Kiln Work
Refractory masons, pipefitters, insulators (Heat & Frost), maltster mechanics, sheet-metal workers on ductwork.
Jobsites in the Network
- Large commercial malthouses supplying Missouri brewing operations and similar in adjacent states
- See companion pages: Mash Tuns, Industrial Furnaces, Refractory Brick
Compiled from publicly filed asbestos litigation, EPA / state-DNR records, and industry-publication histories. Product and company references reflect what has been alleged or documented in publicly filed litigation. This page does not constitute a finding of liability against any company. Not legal advice; consult a licensed attorney about your specific situation.