Green mortar or chromite mortar is one of the refractory masses that are used as dough. These mortars are based on alumina and chromite, which are used for placing and installing refractory parts of the slide gate system and assembling the Tandish nozzle inside the Tandish block. This mortar contains a large amount of alumina and has a high temperature stability. Although these materials are used at 1700. C, they do not crack.