Noun
a white crystalline oxide used in the production of calcium hydroxide
Source: WordNetAt the end of this eruptive phase, an island circled by reefs was formed, its marine vestiges are evident in a calcareous layer in the area of Lameiros, in São Vicente (which was later explored for calcium oxide production). Source: Internet
The temperature at which limestone yields calcium oxide is usually given as 825 °C, but stating an absolute threshold is misleading. Source: Internet
It is also used as a raw material in the refining of sugar from sugar beet ; It is calcined in a kiln with anthracite to produce calcium oxide and carbon dioxide. Source: Internet
They then treat the liquid (often with lime (calcium oxide) ) to remove impurities and then neutralize it. Source: Internet
This glass is often slightly modified chemically (with more alumina and calcium oxide) for greater water resistance. Source: Internet