▎ 摘　　要

NOVELTY - Graphene gypsum-based electromagnetic shielding composite material mixed with wet ground steel slag comprises 300-700 pts. wt. gypsum, 0.3-0.7 pts. wt. modified graphene, 45-210 pts. wt. wet-milled steel slag, and 180-420 pts. wt. water. USE - Graphene gypsum-based electromagnetic shielding composite material mixed with wet ground steel slag. ADVANTAGE - The graphene gypsum-based electromagnetic shielding composite material has light weight, low cost, good electromagnetic shielding performance, simple production process, green and environmental protection, and high comprehensive benefits. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene gypsum-based electromagnetic shielding, which involves: (A) weighing 300-700 pts. wt. gypsum, 0.3-0.7 pts. wt. modified graphene, 45-210 pts. wt. wet-milled steel slag, and 180-420 pts. wt. water; (B) dissolving the modified graphene in water and then dispersing in an ultrasonic wave for 10 to 60 minutes to obtain a suspension; and (C) mixing gypsum and wet-milling steel slag first, then adding suspension, stirring for 30-40 seconds to obtain graphene gypsum-based electromagnetic shielding composite material.