Thermal reclamation of spent blasting abrasive

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6230855

Bryan, B G ^[1]; Thomas, W; Adema, C ^[2]

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1. Institute of Gas Technology, Chicago, IL (USA)
2. David Taylor Research Center, Annapolis, MD (USA)

Abrasive blasting media is used to remove anticorrosive and antifoulant coatings from the hulls and tanks of US Navy ships. The total production of paint-contaminated spent abrasives from the eight US. Navy shipyards ranges from 75,000 to 100,000 tons per year. Most of this spent abrasive is disposed in landfills. Organic paint binders and heavy metals are present in the spent abrasives in concentrations sufficient to classify them as hazardous wastes in some states. In an effort to avoid the rising costs an long-term environmental liability associated with landfilling this waste, the US Navy has investigated various methods of reclaiming spent abrasives for reuse in hull- and tank-blasting operations. This paper discusses the results of a research and development project conducted under the Navy's Hazardous Waste Minimization Program to test a fluidized-bed sloped-grid (FBSG) reclaimer to determine if it could be used to recycle spent abrasive. Thirty tons of abrasive were processed and a product meeting military specifications for new abrasives was reclaimed. Blasting performance was also comparable to new abrasives. 3 refs., 1 fig., 2 tabs.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• Sponsoring Organization: IGT
• OSTI ID: 6230855
• Report Number(s): CONF-9004182-4; ON: TI91008400
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
ABRASIVES
CALCINATION
CHEMICAL REACTIONS
CLEANING
COATINGS
COMBUSTION
DECOMPOSITION
ELEMENTS
FLUIDIZED BEDS
FUNCTIONAL MODELS
HAZARDOUS MATERIALS
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
METALS
ORGANIC COMPOUNDS
OXIDATION
PAINTS
PARTICLES
PERFORMANCE TESTING
PILOT PLANTS
PROCESSING
PYROLYSIS
RECOVERY
RECYCLING
SEPARATION PROCESSES
SHIPS
TESTING
THERMOCHEMICAL PROCESSES
TIN
WASTE MANAGEMENT
WASTE PROCESSING