Pre-coat Powder is used in Dust Extraction Systems in the following Application/Conditions:
- Where very fine dust is present in the product; especially when cyclones/drop out/ baffle boxes etc are used as pre-filters.
- The pre-coat powder is inserted into the extraction system (i.e. LEV Hoods or in ducting) when new filters are installed but before product reaches the clean filters.
The pre-coat powder forms a surface coating on the filters which provides the following benefits:
- Prevents very fine dust blinding new filters.
- The filters work more efficiently when pre-coat powder is applied.
- The pre-coat powder will reduce extraction emissions, with new filters, which would otherwise increase while a surface coating of product builds up.
Note pre-coat powder can also help to neutralise acidic dusts.