▎ 摘　　要

NOVELTY - Preparing porous ceramics involves taking the ceramic matrix material, putting in a high-temperature furnace and sintering in a reducing protective atmosphere, controlling the furnace temperature to 1000-200 degrees C, carrying out heavy metal volatilization, and cooling after firing. The ceramic matrix material is taken out after baking and cooled and placed in a ball milling device to grind to obtain a powder for removing heavy metals. The 20-80 pts. wt. of the heavy metal removing powder, 1-30 pts. wt. of the pore former, and 1-20 pts. wt. of the sintering aid are weighed, and placed them in a ball mill device to mix the ball mill. The ball-milled mixture is taken out to bake and dried to obtain a mixed powder. The paraffin wax is heated to a molten state, added the mixed powder while stirring, continue to stirred for 1-8 hours after the addition is completed, to obtain a paraffin wax slurry. The paraffin wax slurry is injected into a pre-prepared mold, cooled to form. USE - The method is useful for removing heavy metal in porous ceramic. ADVANTAGE - The method efficiently and economically provides heavy metal-removing porous ceramic. DETAILED DESCRIPTION - Preparing porous ceramics involves taking the ceramic matrix material, putting in a high-temperature furnace and sintering in a reducing protective atmosphere, controlling the furnace temperature to 1000-200 degrees C, carrying out heavy metal volatilization, and cooling after firing. The ceramic matrix material is taken out after baking and cooled and placed in a ball milling device to grind to obtain a powder for removing heavy metals. The 20-80 pts. wt. of the heavy metal removing powder, 1-30 pts. wt. of the pore former, and 1-20 pts. wt. of the sintering aid are weighed, and placed them in a ball mill device to mix the ball mill. The ball-milled mixture is taken out to bake and dried to obtain a mixed powder. The paraffin wax is heated to a molten state, added the mixed powder while stirring, continue to stirred for 1-8 hours after the addition is completed, to obtain a paraffin wax slurry. The paraffin wax slurry is injected into a pre-prepared mold, cooled to form, and obtained a wax mold after demolding. The wax mold is put in a furnace for pre-heating for dewaxing to obtain a dewaxed sample. The wax-removed sample is put into a furnace for sintering. The sintering process includes heating, heat preservation and cooled, and after cooling, the heavy metal-removing porous ceramic is obtained. INDEPENDENT CLAIMS are included for the following: (1) a porous ceramic for removing heavy metals, which includes heavy metal removal powder, pore-forming agent and sintering aid obtained after the heavy metal removal process of the ceramic matrix material, and ceramic matrix material includes a mineral powder material, and the mineral powder material is at least one of kaolin, diatomaceous earth, feldspar, quartz sand, and bauxite, and particle size of the mineral powder material is 50-100 mesh; and (2) a atomizing core, which comprises a conducting liquid for conducting and heating the liquid to be atomized and a heating element arranged on the conducting liquid, and conductive liquid is made of the heavy metal-removing porous ceramic.