The marble processing cycle involves the production of large quantities of wastes whose disposal represents an economic and environmental concern for marble companies due to the difficulty of identifying suitable landfills and the high transfer costs. In this context, the design of a sustainable industrial plant that allows the reuse of the calcium carbonate (CaCO₃) contained in the marble waste is extremely challenging. With this recognition, the main industrial applications of CaCO₃ are firstly analyzed in the present work to identify the physical–chemical properties required to CaCO₃ in these contexts. Later, different plant solutions are suggested to recover CaCO₃ from marble sludge in order to allow its use in industrial applications. The designed industrial plant includes an energy efficient drying phase, which exploits the thermal waste of the exhaust gases produced in a cogeneration section, and a subsequent milling phase. Since marble wastes currently constitute an economic burden for companies and an environmental emergency for the Public Administration, the performed technical–economic analysis shows that its recovery may represent an opportunity of sustainable development for the marble sector.

大理石加工周期涉及大量废物的产生，由于难以确定合适的垃圾填埋场和高昂的转移成本，这些废物的处置对大理石公司来说代表了经济和环境问题。在这种情况下，设计一个可持续的工业工厂，允许再利用大理石废料中的碳酸钙 (CaCO _{3 ) 是极具挑战性的。}有了这一认识，在目前的工作中首先分析了CaCO ₃的主要工业应用，以确定在这些情况下CaCO _{3所需的物理化学性质。}后来，建议使用不同的植物溶液来回收 CaCO ₃从大理石污泥中提取，以便在工业应用中使用。设计的工业设备包括一个节能干燥阶段，该阶段利用热电联产部分产生的废气的热废物，以及随后的研磨阶段。由于大理石废料目前对公司构成经济负担，对公共行政部门构成环境紧急情况，因此进行的技术经济分析表明，其回收可能代表大理石行业可持续发展的机会。