A　low-grade　copper　ore　from　the　high-pressure　grinding　roll　was　agglomerated　by　using　a　drum,　and　then　geopolymerization　was　used　to　cure　the　agglomerates.　The　effects　of　alkali　activator　composition　and　dosage,　water　content　and　metakaolin　addition　on　particle　size,　compressive　strength　and　acid　resistance　of　agglomerates　were　studied.　The　mechanism　of　geopolymerization　to　improve　the　acid　resistance　of　agglomerates　was　studied　by　FTIR　and　NMR　measurements.　The　results　show　that　alkali　activator　and　water　content　will　help　to　improve　the　particle　size　and　acid　resistance　of　agglomerates.　It　can　be　seen　that　reducing　of　sodium　silicate　content　in　the　alkali　activator　results　a　lower　acid　tolerance.　Adding　suitable　amount　of　sodium　hydroxide　the　compressive　strength　of　the　agglomerates　can　be　enhanced　and　their　acid　resistance　can　be　significantly　improved　in　the　presence　of　metakaolin.　FT-IR　and　NMR　results　indicate　that　the　increase　of　geopolymer　gels　content　is　responsible　for　the　enhancement　of　acid　resistance　of　agglomerates.　©　2020,　Science　Press.　All　right　reserved.