Economic feasibility is vital factor for the industrialization of the potash production. To effectively recover potassium (K), the integrated roasting process of kalsilite ore-calcium chloride dihydrate (CaCl₂·2H₂O) was studied. The K release ratio and K extraction ratio were simultaneously studied by focusing on the effects of temperature, roasting time and mass ratio of CaCl₂·2H₂O to ore. Thermal behavior of kalsilite ore-CaCl₂·2H₂O system indicated that the volatilization of KCl results in the differences of K extraction ratio and K release ratio, while KCl in the reaction system did not volatilized thoroughly due to the interaction with surrounding molecules. The transformation of phase structure demonstrated the decomposition of the Si(Al)-O-Si bond and the formation of Si-O-Si and Si-O-Al bonds. The crystal structure analysis illustrated that KAlSiO₄ is more attractive in terms of the release of K than KAlSi₃O₈. Based on the experimental results, the deconstruction-reconstruction process of kalsilite ore-CaCl₂·2H₂O roasting system was proposed, including the invasion of Ca²⁺, attraction of Cl^-, and deconstruction-reconstruction of reaction system. In addition, the potential method to overcome volatilization of KCl was suggested.

经济可行性是钾肥产业化的重要因素。为有效回收钾（K），研究了钾长石矿石-氯化钙二水合物（CaCl ₂ · 2H ₂ O）的一体化焙烧工艺。着眼于温度、焙烧时间和CaCl ₂ · 2H ₂ O与矿石质量比的影响，同时研究了K释放率和K提取率。钾长石矿石-CaCl ₂ · 2H _{2 的}热行为O系统表明KCl的挥发导致K提取率和K释放率的差异，而反应体系中的KCl由于与周围分子的相互作用而没有完全挥发。相结构的转变证明了 Si(Al)-O-Si 键的分解以及 Si-O-Si 和 Si-O-Al 键的形成。晶体结构分析表明，KAlSiO ₄在K释放方面比KAlSi ₃ O ₈更具吸引力。根据实验结果，提出了钙钛矿矿-CaCl ₂ · 2H ₂ O焙烧体系的解构-重构过程，包括Ca ²⁺的侵入、Cl的吸引。^-，以及反应体系的解构-重建。此外，还提出了克服 KCl 挥发的潜在方法。