verb[with object] (usually as adjective calcined)
Reduce, oxidize, or desiccate by roasting or strong heat: calcined bone ash
More example sentences
- Materials that are commonly calcined include phosphate, aluminum oxide, manganese carbonate, petrol coke, and sea water magnesite.
- A smaller pit 5m away contained animal bone and burnt flint, including an axehead calcined by intense heat, and a unique pottery ‘golf ball’.
- When metals were calcined, the terra pinguis escaped, leaving behind a metallic calx (what we today call an oxide).
- Example sentences
- Oxidative calcination is commonly used to convert metal sulfide ores to oxides in the first step of recovering such metals as zinc, lead, and copper.
- In the case of certain ores containing relatively inactive metals such as mercury, separation can be achieved by heating the ore in air, i.e., by oxidative calcination (also known as roasting).
- It was assumed that metals give out phlogiston during calcination.
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