Modular Abrasive Blasting Skids for Hazardous Waste Recovery
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Solution Overview
Problem
Existing abrasive blasting systems face challenges in efficiently cleaning and reclaiming spent abrasive media, particularly with silica sand, which generates hazardous waste due to lead dust contamination and requires a more effective and modular approach for arranging components during the blasting process.
Innovation Solution
A modular abrasive particle blasting system comprising interconnectable skids for abrasive blasting, recycling, and vacuum units, allowing for flexible stacking and side-by-side arrangement, with pneumatic hoses linking the components for efficient operation and reuse of steel abrasive particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If silica sand is used as abrasive blasting media, then the blasting process can be performed, but hazardous waste is generated due to lead dust contamination
Solution Approach 1:
The patent converts the harmful lead dust contamination into a benefit by using magnetic separation to recover and reuse the contaminated sand media. The magnetic drum separator captures ferrous particles mixed with lead dust, allowing the sand to be cleaned and reused, thereby eliminating hazardous waste disposal while maintaining blasting effectiveness
Solution Approach 2:
The patent implements a recovery system where spent abrasive media containing lead dust is captured, separated, and reused. The vacuum system collects spent media, the magnetic separator recovers ferrous particles, and the cleaned sand is returned to service, preventing hazardous waste generation through continuous media recovery
2Object-generated harmful factors
If steel abrasive particles are used instead of sand, then hazardous waste is reduced, but the cost of abrasive material increases
Solution Approach 1:
The patent implements a comprehensive recovery system that captures spent steel abrasive particles, separates them from lead dust contamination using magnetic fields, and returns the cleaned steel media to service. This continuous recovery process eliminates the need for frequent abrasive material replacement, reducing overall material costs while maintaining environmental safety
3Adaptability or versatility
If a modular skid system is used for abrasive blasting, then system flexibility and adaptability are improved, but device complexity increases
Solution Approach 1:
The patent divides the abrasive blasting system into separate modular skids, each performing a specific function (blasting, vacuum collection, magnetic separation, media recovery). These self-contained modules can be independently configured and arranged in different layouts, providing flexibility while maintaining operational simplicity through functional specialization
Solution Approach 2:
The modular skid design allows the same basic module type to serve multiple functions in different configurations. For example, the magnetic separation skid can process media from multiple blast pots, and the vacuum system can serve both collection and recovery functions, reducing overall system complexity through component versatility
4Productivity
If abrasive blasting media is cleaned and reused, then productivity is improved, but the complexity of cleaning and separation processes increases
Solution Approach 1:
The patent replaces complex mechanical cleaning mechanisms with a magnetic separation system. The magnetic drum separator uses magnetic fields to automatically capture ferrous particles and lead dust from the abrasive media, eliminating the need for manual screening, washing, or complex mechanical separation processes, thereby simplifying the cleaning system while enabling continuous media reuse
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The modular system enhances the performance and cost-effectiveness of abrasive blasting and recycling by enabling flexible configuration, reducing hazardous waste, and allowing for repeated use of steel abrasive particles, thereby improving environmental safety and operational efficiency.
Implementation Method 1
the used abrasive blasting media is vacuumed up and carried in an airstream to a cleaning and separating device
Implementation Method 2
Lightweight contaminants are removed by air-washing
Data Source
AI summary
A modular abrasive particle blasting system comprises an abrasive blast assembly including at least one blast vessel for delivering blast particles to an abrasive blasting system. The abrasive blast assembly is mounted within a first skid. An abrasive recycling assembly includes at least one vacuum hopper for receiving grit retrieved from an abrasive blasting process. The abrasive recycling assembly is mounted within a second skid. The first and second skids comprise mounting members at a top section and a bottom section of each of the first and second skids to permit mounting of the first and second skids in alternate stacked arrangements whereby the first skid is selective mounted above and below the second skid. The same skid principal may be used to provide a variety of skids, including blast skid, vacuum skid, recycle skid, storage skid, air dryer skid, dust collector skid and or dehumidification skid.