▎ 摘　　要

NOVELTY - Preparing graphene heating plate comprises e.g. (i) adding fly ash, cement, carbide slag, slag, diatomite, lime powder, wood fiber, slaked lime and water reducing agent to cement mortar stirrer, stirring, mixing uniformly, adding proper amount of water, and stirring uniformly to obtain slurry, (ii) passing the stirred slurry stably through headbox and uniformly pouring the slurry on to felt in operation of laminator for forming slurry in blanket material layer, dehydrating the material layer step by step through vacuum box, reducing moisture content in material layer, casting injection mold into material embryo to reach specific thickness, where the embryo enters the cutting upper mold, and pressing by roller to obtain plate blank, (iii) adjusting density, smoothness, reducing moisture of plate blank to 30% by overpressure machine, demolding, placing plate blank in autoclaved kettle steam, steaming, controlling the steam kettle pressure, reducing pressure, reducing gas pressure. USE - The plate is useful for heating floor and wall (claimed). ADVANTAGE - The plate: reduces production cost of the product; changes waste into treasure; saves resource; and has excellent economic benefit and ecological benefit. DETAILED DESCRIPTION - Preparing graphene heating plate comprises (i) adding 50-60 wt.% fly ash, 10-15 wt.% cement, 5-7 wt.% carbide slag, 5-7 wt.% slag, 8-12 wt.% diatomite, 1-3 wt.% lime powder, 8-10 wt.% wood fiber, 0.8-1.2 wt.% slaked lime and 0.3 wt.% water reducing agent to cement mortar stirrer, stirring, mixing uniformly, adding proper amount of water, and stirring uniformly to obtain slurry, (ii) passing the stirred slurry stably through headbox and uniformly pouring the slurry on to felt in operation of laminator for forming slurry in blanket material layer, dehydrating the material layer step by step through vacuum box, reducing moisture content in material layer to about 75%, casting injection mold into material embryo to reach specific thickness, where the embryo enters the cutting upper mold, and pressing by roller to obtain plate blank, (iii) adjusting density, smoothness, reducing moisture of plate blank to 30% by overpressure machine, demolding, placing plate blank in autoclaved kettle steam, steaming, controlling the steam kettle pressure to 10-11 MPa, time to 5 hours boost for 12 hours, reducing pressure for 5 hours, reducing gas pressure to 0 for 1 hour, and opening kettle and taking out plate blank, (iv) placing into drier, drying, and performing edging and chamfering grinding treatment when moisture content in plate blank is less than 10% to obtain semi-finished plate blank, (v) performing three sanding treatments on semi-finished blanks, and then performing polishing treatment for two times, (vi) forming longitudinal groove and lateral groove on one side of semi-finished blank by engraving machine, where the longitudinal grooves are two, lateral grooves are one, and two ends of lateral grooves respectively connected to two longitudinal grooves, lateral groove and longitudinal groove are provided with electric heating wire, longitudinal groove is provided with wire, and wire is electrically connected to heating wire, and (vii) finally plating a layer of graphene material on outer surface of semi-finished blank.