Forsterite is an ultrabasic plutonic rock. It is a common rock-forming mineral and one of the earliest minerals formed when magma crystallizes. It is mostly found in igneous rocks such as gabbro, basalt and peridotite. Symbiotic minerals include magnetite, pyroxene, plagioclase, chromite and serpentine. Forsterite or serpentinized peridot with iron content less than 10% of olivine, the ignition loss of less than 5% can be directly used as refractory raw materials, while serpentine is more serious, and the ignition loss of more than 5% must be calcined Or with magnesia, it can make refractory materials. Many provinces and autonomous regions such as Inner Mongolia, Xinjiang, Sichuan, Hubei, Shaanxi, Hebei and other provinces and autonomous regions have extensive distribution and large reserves. Because forsterite is very resistant to alkaline slag, its products are mostly used as checker bricks for regenerators. Light burnt magnesia powder