Based on the properties, a combined flowsheet of flotation-roasting in air -cyanidation-active carbon absorption was developed. The overall recovery of Au is of 83. 91%.

依据矿物学特性，提出了“原矿浮选— 精矿氧化焙烧— 氰化浸金— 活性炭吸附金”的选冶联合工艺流程，金选冶总回收率达83．91％。

youdao

Sometimes the skin is rubbed with malt sugar to give it an amber colour and is then hung up to air dry before roasting in the oven.

有时厨师会给鸭皮抹上饴糖使它变成琥珀色，在放入烤炉烘烤之前还需要把鸭子挂在空气中干燥。

youdao

Sometimes the skin is rubbed with malt sugar to give it an amber colour and is then hung up to air dry before roasting in the oven.

BBC: Sampling Beijing��s imperial duck