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TAKE THE QUIZ“weld-on”
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Weldon process
noun: a process used formerly for the recovery of manganese dioxide in making chlorine from hydrochloric acid in a stoneware still by adding lime to the still liquor and oxidizing with air to precipitate a mud containing calcium manganite and yielding chlorine when recirculated and treated with hydrochloric acid
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Merriam-Webster unabridged
