Testing sample preparation of valuable metals such as zinc, copper, and germanium contained in coal slime
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During the testing of valuable metals such as zinc, copper, and germanium in coal slurry, how is the carbon in the coal slurry removed?~
Carbon burns at high temperatures to produce carbon dioxide, which is then absorbed by carbon dioxide adsorbents. The specific steps can refer to the analysis method for carbon in coal.
Carbon can be oxidized away at high temperatures in a muffle furnace, or it can be removed using nitric acid and perchloric acid. If germanium is to be measured, perchloric acid cannot be used; in that case, a muffle furnace must be employed to remove the carbon