▎ 摘　　要

NOVELTY - Retarder resistance magnesium ammonium phosphate cement, comprises graphene oxide coated dead burned magnesium oxide, ammonium dihydrogen phosphate and mineral admixture, where graphene oxide coated of dead burned magnesium oxide and ammonium dihydrogen phosphate to satisfy the mass ratio of magnesium oxide and ammonium dihydrogen phosphate is 62-78:22-38 and mineral admixture accounts for 5-15% of the total mass of burned magnesium oxide and ammonium dihydrogen phosphate. USE - Used as retarder resistance magnesium ammonium phosphate cement. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing retarder resistance magnesium ammonium phosphate cement, comprising adding graphene-enriched burned magnesium oxide, ammonium dihydrogen phosphate and mineral admixture into a ball mill, and grinding for 25-30 minutes.