Sep 07, 2021 · Recycled gypsum, also known as waste gypsum, was the raw material for the production of recycled gypsum plaster. It was obtained by crushing, grinding, and calcining the commercial gypsum, followed by hydrating and drying to obtain the recycled gypsum. ... At a temperature of 165°C, many platelike crystals appeared, although it had more ...
![whatsapp](/images/whatsapp.png)