How much is the initial setting time of building gypsum

                            How much is the initial setting time of building gypsum

Building gypsum belongs to a species.

In the production of gypsum raw materials mainly for natural gypsum containing calcium sulfate (gypsum) or chemical byproducts and phosphogypsum containing calcium sulphate, fluorine gypsum, boron, such as slag, its chemical formula is CaSO4.2 H2O, also calls the dihydrate gypsum. The natural dihydrate gypsum calcined at different temperatures can get different kinds of gypsum. Such as the natural dihydrate gypsum in 107 ~ 170 ℃ under the condition of dry heating available building gypsum.

The initial setting time of building gypsum affected by water content, temperature, humidity and mixing effects such as the surrounding environment.

Normal 6 minutes is building gypsum initial setting time, final set does not exceed 30 minutes.