Thermal heat storage material and a process for preparing low melting point

The present invention relates to heat the heat storage material is a low melting point, the raw material comprising lithium nitrate, sodium nitrate, potassium nitrate, lithium hydroxide, prepared by mixing the insulation material is made of the percentage by mass of the raw materials: lithium nitrate 30-40%, 15-23% sodium nitrate, potassium nitrate 40-48%, 1-2% lithium hydroxide. The low-melting heat storage material having a high heat transfer latent heat, low melting point, good fluidity of liquid, and simple preparation method, can be widely used in industrial heat recycling and solar energy, and the like.