Cr³⁺ and Cu²⁺ can be cured using basic magnesium sulfate cement (BMSC). The influence of compressive strength, water resistance, and leaching characteristics of BMSC-solidified bodies was studied to evaluate the applicability of BMSC cement in industrial solid waste treatment. XRD, SEM, MIP, TG and FTIR were used to analyze the hydration products and microstructures of the solidified BMSC. The results show that when the content of Cr³⁺ or Cu²⁺ accounts for 0.2% to 2% of the molar mass of MgO, the addition of Cr³⁺ and Cu²⁺ inhibits the hydration reaction of BMSC, which causes the compressive strength to decrease, but the lowest strength is still have 27.6 MPa. The Cr³⁺ or Cu²⁺ BMSC-solidified body has good water resistance. The highest leaching concentrations in the solidified product are just 0.221 mg/L and 0.508 mg/L. XRD and microscopic analyses show that four new phases [4Cr(OH)₃•Cr₂H₂(SO₄)₄•2H₂O, Cr(OH)₃•3H₂O, Cu(OH)₂•2H₂O and 3Cu(OH)₂•CuSO₄•2H₂O] are formed after adding Cr³⁺ and Cu²⁺, which shows that BMSC cement can cure heavy metals through chemical reactions. During the solidification process, the interplanar spacing of the 5•1•7 phases changed with varying amounts of copper and chromium ions. It was confirmed that copper and chromium ions entered the 5•1•7 phase crystal structure by atom substitution.

Cr ³⁺和Cu ²⁺可以使用碱性硫酸镁水泥（BMSC）进行固化。研究了抗压强度，耐水性和BMSC固化体浸出特性的影响，以评价BMSC水泥在工业固体废物处理中的适用性。用XRD，SEM，MIP，TG和FTIR分析了固化后的BMSC的水合产物和微观结构。结果表明，当Cr ³⁺或Cu ^2+的含量占MgO摩尔质量的0.2％至2％时，Cr ³⁺和Cu ^{2+的加入会}抑制BMSC的水合反应，从而导致BMSC的压缩。强度降低，但最低强度仍为27.6 MPa。铬³⁺或Cu ²⁺ BMSC凝固体具有良好的耐水性。固化产品中的最高浸出浓度仅为0.221 mg / L和0.508 mg / L。X射线衍射和显微分析表明，有四个新的相[4Cr（OH）₃ •Cr ₂ H ₂（SO ₄）₄ •2H ₂ O，Cr（OH）₃ •3H ₂ O，Cu（OH）₂ •2H ₂ O和加入Cr ³⁺和Cu ²⁺后形成3Cu（OH）₂ •CuSO ₄ •2H ₂ O]，表明BMSC水泥可以通过化学反应来固化重金属。在凝固过程中，5•1•7相的晶面间距随铜和铬离子量的变化而变化。证实铜和铬离子通过原子取代进入了5•1•7相晶体结构。