The CaCl₂-rich distiller waste discharged in the Solvay process has not been recycled comprehensively. A novel CO₂ mineralization route with waste CaCl₂ solutions via coupled reaction-extraction-crystallization technique was proposed. The effect of Na⁺, K⁺, Mg²⁺, Al³⁺, NO₃⁻ and SO₄²⁻ ions which exist in the distiller waste on the conversion of CaCl₂ as well as the morphology of product CaCO₃ was studied with the aid of titration, Scanning Electron Microscope (SEM), Energy-Dispersive X-ray Spectroscopy (EDS), Particle Size Analyzer, X-ray Diffractometer (XRD), Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) and Thermogravimetry (TG). Among the ions, Na⁺, K⁺ and NO₃- have little influence that could be ignored. Both Al³⁺ and SO₄²⁻ are adsorbed on the surface of vaterite and inhibit the transformation to calcite by lowering down the surface energy. Therefore, small particles with diameters of less than 10 μm even 1 μm which are hard to be filtered are formed. While for Mg²⁺, the effect is negligible when the content is less than 5 wt %. However, as the content increases, Mg²⁺ could not only be adsorbed on the surface but also insert into the crystal lattice of CaCO₃, forming the worm-like Mg-calcite. Finally, the experiment of simulated distiller waste was investigated to take a very important step towards industrialization.

索尔维过程中排放的富含CaCl _2的蒸馏器废物尚未得到全面回收。通过反应-萃取-结晶耦合技术，提出了利用废CaCl ₂溶液进行CO ₂矿化的新途径。钠的效果⁺，K ⁺，Mg的²⁺，铝³⁺，NO ₃ ^-和SO _4根^2-离子存在于蒸馏废物上的CaCl转化₂以及产品的碳酸钙形态₃通过滴定，扫描电子显微镜（SEM），能量色散X射线光谱仪（EDS），粒度分析仪，X射线衍射仪（XRD），电感耦合等离子体原子发射光谱仪（ICP-AES）和热重法（TG）。在离子中，Na ⁺，K ⁺和NO _3-的影响很小，可以忽略不计。Al ³⁺和SO ₄ ^2-均吸附在球v石表面，并通过降低表面能来抑制其转变为方解石。因此，形成难以过滤的直径小于10μm甚至1μm的小颗粒。而镁²⁺当含量小于5wt％时，效果可忽略不计。然而，随着含量的增加，Mg ²⁺不仅会吸附在表面，而且会插入CaCO _3的晶格中，从而形成蠕虫状的Mg方解石。最后，对模拟蒸馏器废物的实验进行了研究，为工业化迈出了非常重要的一步。