At present, because the materials used for the outer of cables inside most buildings are non-refractory materials, they have contributed to the occurrence of fires, causing huge property losses and casualties. How to solve such problems and prevent them before they become a problem has become a hot topic for relevant departments and the public.

Light-burned magnesium powder is a man-made small block for construction. It is also called light-burned magnesium powder sintered brick. Light-burned magnesium balls, solid clay refractory bricks are one of the oldest building materials in the world. From the tomb of Qin Shihuang in Shaanxi to the Great Wall of China in the Ming and Qing Dynasties, it has passed down the Chinese civilization for thousands of years. To this day, it is still a beloved building material. Clay refractory bricks are made from local materials, are cheap, durable, and have the advantages of fire resistance, heat insulation, sound insulation, and moisture absorption. They are widely used in civil construction projects.

Calcium hydroxide, also known as hydrated lime and slaked lime. Calcium oxide, that is, quicklime, is digested with water and then dried, sieved, and air-selected (or classified and crushed) to obtain a finished product

The content of silicon dioxide in light-burned magnesium balls should be controlled to a certain percentage. If the silicon content exceeds the standard, the plasticity and toughness of steel will be significantly reduced. Silicon can reduce the density, thermal conductivity, and electrical conductivity of steel. Can promote the coarsening of ferrite grains and reduce the coercive force.