利用磷酸镁水泥对富集型重金属铜和镍进行固化研究。对掺入硝酸铜和硝酸镍水泥的抗压强度、铜镍离子浸出质量浓度、水化产物组成等进行测定,观测水泥表面的微观形貌,分析铜镍离子在水泥中的化学态及赋存状态。研究表明：硝酸铜掺量为0~3%（质量分数）时,水泥的抗压强度随着铜离子掺量的增加呈现先增大后减小的趋势,当硝酸铜掺量为1%时,水泥7 d抗压强度达到最大值46.05 MPa;硝酸镍掺量为0~3%（质量分数）时,水泥的抗压强度随着镍离子掺量的增加而逐渐减小,当硝酸镍掺量由0增加到3%时,水泥7 d的抗压强度降低了约29%。水泥的密实度与铜镍离子的固化效果直接相关。在硝酸铜和硝酸镍掺量都为3%时,水泥1 d铜离子浸出质量浓度最高为1.95 mg/L、镍离子浸出质量浓度最高为0.97 mg/L,均远低于相关国家标准。铜主要以+2价态的Mg_0.95Cu_0.05O形式存在,镍主要以+2价态的Ni（OH）₂无定形沉淀形式存在。

MPC（magnesium phosphate cement） was used to solidificate enrichment heavy metal Cu and Ni. The compressive strength of MPC added Cu（NO₃）₂ and Ni（NO₃）₂,the leaching concentration of Cu ²⁺ and Ni ²⁺,and the composition of hydration products were determined.The surface microstructure was observed.The chemical states and occurrence of Cu ²⁺ and Ni ²⁺ in cement were analyzed.Results showed that when content of Cu ²⁺ increased from 0 to 3%（mass fraction）,the compressive strength of cement increased first and then decreased with the increase of Cu ²⁺ content;the 7 d compressive strength reached the maximum value of 46.05 MPa,when the dosage of Cu ²⁺ was 1%.When the content of Ni ²⁺ increased from 0 to 3%（mass fraction）,the the compressive strength of cement decreased gradually with the content of Ni ²⁺ increased,and the 7d compressive strength decreased about 29%.The compactness of cement was directly related to the curing effect of Cu ²⁺ and Ni ²⁺.When the dosage of Cu ²⁺and Ni ²⁺ was both 3%,the maximum leaching concentration of Cu ²⁺ was 1.95 mg/L,and Ni ²⁺ was 0.97 mg/L,both far below the relevant national standards. Cu mainly exists in the form of Mg_0.95Cu0_.05O of +2,and Ni exists in the form of Ni（OH）₂ amorphous precipitation of +2.