Abstract: With the large-scale development of graphite ore and the increasing requirements of environmental protection, the resource utilization of graphite solid waste has become a research hotspot. The graphite solid waste was used to prepare electric heating plate. Different methods such as experiment study,statistical analysis and numerical simulation were used to analyze the influence of laying mode on indoor thermal environment. The results showed that the graphite solid waste based electric heating plate has a good heating effect,double wide surface heating effect is better when the two sides heating,the vertical temperature difference is 2. 7 ℃ ,the horizontal temperature difference is 2. 5 ℃ ;Choose two narrow and one wide surface when heating on three sides,indoor temperature distribution is more uniform,the vertical temperature difference is 2. 5 ℃ ,the horizontal temperature difference is 6. 5 ℃ . The four sides heating effect is the best,the vertical temperature difference is 1. 8 ℃ , the horizontal temperature difference is less than 1 ℃ ,the heating rate is the most stable.

Key words: graphite solid waste,electric heating plate,indoor heating,numerical simulation