Explore our premium formulation catalog. Designed specifically for grid energy storage, thermal storage infrastructure, industrial fertilizer synthesis, and advanced metallurgical applications.
As the global energy transition accelerates, conventional power grids are undergoing structural transformations to accommodate massive loads of intermittent renewable sources. Solar and wind energy, while clean, suffer from generation gaps that threaten grid stability. Grid energy storage systems (GESS) are crucial to resolving these discrepancies, and **Molten Salt Grid technology** stands as one of the most cost-effective and operationally stable systems available today.
Shanxi Vojin New Materials Co., Ltd. has developed ultra-high purity, binary and ternary molten salt mixtures optimized for Thermal Energy Storage (TES). By utilizing molten salt as a Heat Transfer Fluid (HTF) and storage medium, modern Concentrated Solar Power (CSP) facilities and large-scale industrial steam operations can store energy for 10-15 hours, achieving stable, dispatchable power on demand. This white paper highlights the engineering specifications, chemical compositions, and strategic benefits of Vojin's thermal energy storage salts.
Our molten salt formulations feature ultra-low chloride (Cl⁻) and carbonate (CO₃²⁻) impurity levels (typically < 50 ppm). This drastically reduces the corrosion rates of stainless steel and high-nickel alloys within heat exchangers and thermal storage tanks, doubling the design life of molten salt storage infrastructure.
Our capacity to scale and deliver high-purity inorganic chemicals globally remains unmatched. The numbers below reflect our continuous commitment to chemical innovation and large-scale grid solutions.
Leading-edge manufacturing of molten salts and industrial nitrates.
Exporting chemical and energy storage solutions across the globe since 2010.
State-of-the-art chemical manufacturing facilities in Shanxi, China.
Direct export operations supporting key power plants and farming structures.
Providing the raw thermal capacity and nutritional foundations necessary for modern industrial development.
Industrial, agricultural, and solar grade Sodium Nitrate (NaNO₃) and Potassium Nitrate (KNO₃). Synthesized under strict purity parameters to eliminate trace halides and moisture that cause phase instability.
Water-soluble crop nutrition formulations containing premium elements like trace element trace minerals, nitrogen, potassium, and phosphorus. Engineered for rapid assimilation, improved soil profiles, and yield optimization.
High-value process by-products like gypsum, customized purification agents, and specialty carbonates that support circular economy initiatives in building material manufacturing and waste-water purification processes.
Our solutions bridge the gap between heavy industrial thermal requirements and clean renewable energy systems.
Optimized for Concentrated Solar Power (CSP) facilities. We provide solar-grade binary salt (60% NaNO₃ / 40% KNO₃) which serves as both the heat collection and heat storage medium, working continuously up to 565°C.
Chemical reinforcement process for safety glass and electronics display glass. Our high-purity KNO₃ creates an ion-exchange process that replaces smaller sodium ions with larger potassium ions, maximizing mechanical resilience.
Providing custom thermal energy buffers for coal-to-chemical plants, deep industrial heat recovery projects, and central heating systems, allowing plants to store excess energy and run smoothly during low-load intervals.
Supplying water-soluble nitrates that integrate into drip irrigation and fertigation systems. Enabling greenhouse managers and agricultural corporations to adjust nitrogen-to-potassium ratios instantly based on crop life cycles.
The operating limits of solar salts have historically been restricted by the decomposition threshold of nitrate mixtures. At temperatures above 565°C, binary solar salt begins to slowly break down into nitrites and oxygen, leading to chemical instability. Shanxi Vojin is actively researching and piloting several methods to extend the thermal boundaries of grid-scale storage systems.
By blending calcium nitrate, lithium nitrate, sodium nitrate, and potassium nitrate in precise eutectic proportions, we can lower the melting point from 220°C to below 100°C. This greatly minimizes the energy required for auxiliary heat tracing during startup, while also preventing line freezing during periods of low solar input.
High-temperature molten salt is highly ionic and can act as an aggressive solvent for metal oxide protective layers. Our research lab focuses on dynamic chemistry control, using additives that form passive, highly stable oxide films (such as chromia or alumina-based layers) on the alloy surfaces of pipes and tanks. This ensures that the structural integrity of the system is maintained for up to 30 years.
Binary Solar Salt (60% NaNO₃ / 40% KNO₃): Melting point: 220°C | Upper limit: 565°C | Latent Heat of Fusion: ~110 J/g.
Vojin Advanced Ternary Salt (Ca-Na-K Nitrate): Melting point: 130°C | Upper limit: 500°C | Lower freeze risk, ideal for intermediate industrial heat applications.
As an ISO-certified manufacturer, Shanxi Vojin adheres to rigorous testing regimes. Every batch of nitrates is tested via Inductively Coupled Plasma (ICP) emission spectroscopy and Ion Chromatography to guarantee absolute purity before dispatch. Our location in Shanxi provides direct access to primary mineral reserves, shielding clients from supply chain volatility and offering stable pricing for multi-thousand-ton deliveries.
Deep dive into the operational mechanics, logistics, and purity requirements of grid-scale molten salt installations.
Stay updated with our breakthroughs in thermal energy storage technology and international installations.
Exploring how advanced ternary mixtures allow Concentrated Solar Power plants to operate at temperatures exceeding 600°C, increasing overall steam turbine efficiency.
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An in-depth study highlighting the design parameters of modern heat storage tanks and the chemical consistency required for reliable grid-scale peak-shaving.
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Comparing the lifecycle costs, safety profiles, and environmental footprints of molten salt storage systems with traditional battery chemistry.
Read More →We work in unison with EPC contractors, chemical distributors, and grid system developers to implement zero-carbon energy storage solutions.
Explore the remainder of our technical grade products, tailored for energy grids, metallurgy, and water treatment operations.
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