▎ 摘　　要

NOVELTY - Slag, dust and sludge cooperative multi-performance rubber functional filler comprises 4-8 wt.% graphene-phosphoric acid excitant, 10-20 wt.% converter sludge, 20-40 wt.% ferrochrome slag and 40-65 wt.% blast furnace dry collected dust. The graphene-phosphoric acid excitant is a mixture of graphene, water and phosphoric acid, where graphene and phosphoric acid are both industrially pure and water is deionized water. The particle size of the converter sludge is 0.6-2.5 mu m, ferrochrome slag is 5.2-110.3 mu m and blast furnace dry collected dust is 3.9-58.6 mu m. USE - Used as slag, dust and sludge cooperative multi-performance rubber functional filler. ADVANTAGE - The filler: can reduce the cost of reinforcing fillers and flame retardants, expand the versatility of rubber fillers and conserve energy; and is environmentally-friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing a slag, dust and sludge cooperative multi-performance rubber functional filler, comprising (i) mixing graphene-phosphoric acid activator, converter sludge and ferrochrome slag, alloying mechanically in a hydrogen atmosphere using a high-energy ball mill at 350-650 revolutions/minute for 18-36 hours to obtain type 1 composite powder; (ii) using high-energy ball mill to carry out oxygen atmosphere mechanical alloying treatment on blast furnace dry dust at 350-650 revolutions/minute for 36-72 hours to obtain type II composite powder; and (iii) mixing the type I composite powder prepared in step (i) and the type II composite powder prepared in step (ii), alloying mechanically in a nitrogen atmosphere using a high-energy ball mill at 250-500 revolutions/minute for 9-18 hours.