calcines leaching circuit

例句：

1. 1.The limestone quarry is located in the mountains.
   石灰石采石场位于山区。
2. 2.The limestone is used to make building blocks for children's toys.
   石灰石用于制作儿童玩具的积木。
3. 3.The limestone formation is a natural wonder of the area.
   石灰岩形成是该地区的自然奇观。