▎ 摘　　要

NOVELTY - A solid waste pigment filler comprises 1-5 wt.% hydrochloric acid having concentration of 15-20 %mass, 46-66 wt.% steel slag micropowder, 1-5 wt.% analytically pure graphene, 1-3 wt.% high efficiency grinding aid and 30-50 wt.% laterite nickel-ferrochrome slag. The steel slag micropowder comprises one or more of hot slag powder, quenched slag powder, molten iron desulfurization slag powder, cast residue slag powder, converter hot slag micropowder, converter drum slag powder, electric furnace hot slag powder and electric furnace drum slag powder. The high efficiency grinding aid comprises mixture of analytical grade ethylene glycol, analytical grade triethanolamine and analytical grade absolute ethanol in a mass ratio of 1:2:3-3:2:1. The laterite nickel-ferrochrome slag comprises mixture of laterite nickel slag and ferrochrome slag in a mass ratio of 1:2-2:1. USE - Solid waste pigment filler. ADVANTAGE - The solid waste pigment filler has excellent flame-retardant and rust-proof property with good adhesion and integration and utilizes steel slag and laterite nickel-ferrochrome slag which provides the way for saving waste and increasing the efficiency. The method reduces the production cost of solid waste pigment filler in the existing anti-rust paint by 35-50%. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of solid waste pigment filler which involves mixing hydrochloric acid solution and steel slag micropowder in a constant temperature magnetic stirrer at a speed of 750-1000 rpm for 6-8 hours under normal temperature to obtain a porous steel slag micropowder, mixing laterite nickel-ferrochrome slag with high-efficiency grinding aid, grinding in a variable frequency planetary ball mill at a speed of 600-1000 rpm for 2-4 hours to obtain laterite nickel-ferrochrome slag ultrafine powder having particle diameter of 0.5-2.5 mu m, mixing graphene with laterite nickel-ferrochrome slag ultrafine powder, stirring in a thermostatic magnetic stirrer at a speed of 500-750 rpm for 4-6 hours under normal temperature to obtain graphene-laterite nickel-ferrochrome slag mixed ultrafine powder, mixing porous steel slag micropowder and graphene-laterite nickel-ferrochrome slag mixed ultrafine powder and stirring in a constant temperature magnetic stirrer under a pressure of 0.03-0.09 MPa and normal temperature.