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Scale removal from brass

Sir,

I encountered in problem of removing silica scale from brass tubes. Can you suggest me the method by which these scales can be removed effectively. But in this process there should not be any acids. Without acids these scales to be removed . Please suggest the suitable method.

C.Jayarama Naidu
Central Power Research Institute - Bangalore, Karanataka, India
2003

2005

Dear Mr Naidu,
Please note that silica can be removed by Hydrofluoric acid or otherwise with strong alkaline solution (soda). I understand you prefer non-acid treatment for removal of silica but there are excellent corrosion which can be incorporated into descaling compound to prevent metal loss.

Regards

K Hariharan
- Chennai, India

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