Magnesium-Calcium Binder Mortar for High-Salinity Waste Stabilization

The patent changes the chemical parameters of the binder system by introducing magnesium oxide and calcium oxide as alternative silicate and aluminate sources. This allows the system to achieve effective stabilization of soluble chloride salts without relying on conventional silicon and aluminum content in cement, thereby maintaining both cost-effectiveness and stabilization reliability.

The patent creates a composite binder system combining magnesium oxide, calcium oxide, and other additives to form a multi-component material. This composite approach enables the system to achieve both economic viability and effective stabilization of soluble salts by leveraging the complementary properties of different materials.

The patent converts the harmful impurities in phosphogypsum (P, F, and free acids) into beneficial components of the binder system. By incorporating phosphogypsum directly into the mortar material formulation, the previously harmful substances become integral parts of the stabilization mechanism, enabling resource recovery while eliminating contamination risks.

The patent enables phosphogypsum to serve itself by directly utilizing its impurities as functional components in the binder system. The phosphogypsum no longer requires external processing or containment, as its inherent chemical composition is leveraged to provide stabilization functions, thereby resolving the contamination issue while maintaining resource recovery.

The patent converts the previously harmful high soluble salt content in MSWI fly ash into a beneficial feature. By incorporating the fly ash directly into the binder system without pretreatment, the high soluble salt content becomes part of the stabilization mechanism, eliminating the need for costly pretreatment while maintaining disposal eligibility.

The patent enables MSWI fly ash to serve itself by directly utilizing its inherent high soluble salt content as a functional component in the binder system. The fly ash no longer requires external pretreatment to meet disposal standards, as its original composition is leveraged to provide stabilization functions, thereby reducing disposal costs while maintaining eligibility.

The patent creates a multi-component binder system where each component serves multiple functions. For example, magnesium oxide provides both stabilization of soluble chloride salts and contributes to the overall binder matrix formation. This multi-functionality approach achieves effective stabilization without requiring separate dedicated materials for each function, thereby managing complexity.

The patent develops a composite binder system combining magnesium oxide, calcium oxide, and other additives to form a multi-component material. This composite approach enables the system to achieve both economic viability and effective stabilization of soluble salts by leveraging the complementary properties of different materials, with each component contributing multiple functions.