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Chloride Removal: Using ‘Recyclable Encapsulated Abrasive Media

Chloride Removal: Using ‘Recyclable Encapsulated Abrasive Media
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This paper presents results of multiple test programs that have been performed to determine the effectiveness of recyclable encapsulated abrasive media to remove chlorides during surface preparation. Tests published in 2002 concluded that this technology consistently achieves significant reductions of chloride levels in comparison to those achieved with conventional abrasive blasting. 

Product Number: 41210-554-SG
Author: Michael Merritt
Publication Date: 2010
Industry: Coatings
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$20.00
$20.00

This paper presents results of multiple test programs that have been performed to determine the effectiveness of recyclable encapsulated abrasive media to remove chlorides during surface preparation. Tests published in 2002 concluded that this technology consistently achieves significant reductions of chloride levels in comparison to those achieved with conventional abrasive blasting. However, those tests were conducted with new media and not recycled media; leaving questions regarding the effect of recycling and possible re-deposition of contaminates on the surface. Recent tests indicate that chloride removal can be efficiently performed while recycling encapsulated abrasive media and no detrimental effect on removal rates occurs with increased recycles; in fact, increased cycles showed a slight improvement in removal efficacy. Test results also indicate that blasting with encapsulated abrasive media can frequently reduce chloride concentrations to below typically specified levels. This process compares favorably in both cost and speed to other technologies, which often require a multi-step procedure such as abrasive blast, water or chemical wash and final abrasive blast to achieve specified levels of surface contaminants.

This paper presents results of multiple test programs that have been performed to determine the effectiveness of recyclable encapsulated abrasive media to remove chlorides during surface preparation. Tests published in 2002 concluded that this technology consistently achieves significant reductions of chloride levels in comparison to those achieved with conventional abrasive blasting. However, those tests were conducted with new media and not recycled media; leaving questions regarding the effect of recycling and possible re-deposition of contaminates on the surface. Recent tests indicate that chloride removal can be efficiently performed while recycling encapsulated abrasive media and no detrimental effect on removal rates occurs with increased recycles; in fact, increased cycles showed a slight improvement in removal efficacy. Test results also indicate that blasting with encapsulated abrasive media can frequently reduce chloride concentrations to below typically specified levels. This process compares favorably in both cost and speed to other technologies, which often require a multi-step procedure such as abrasive blast, water or chemical wash and final abrasive blast to achieve specified levels of surface contaminants.

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