How to control the zinc oxide content in the production of zinc chloride using the zinc calcine method?
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We use hot-dip galvanizing zinc oxide and dust removal ash (in small quantities) as raw materials, and produce zinc chloride using the zinc ore roasting method. However, the zinc oxide content is always around 2.2, while the standard requires it to be below 2.0. Could you tell me what might be causing this problem? Are there any ways to control the zinc oxide content? The lower, the better. Thank you, reward_7ree
Is it possible to add salt or acid before baking to lower the pH and thereby reduce the zinc chloride content?
During the zinc chloride concentration process, the pH should be maintained at 2-3 before concentration; the concentration temperature should be increased to facilitate rapid concentration and prevent acid loss.
You can give it a try; thanks for the valuable advice