Engineered for high thermal capacity, stability, and agricultural applications from Shanxi Vojin New Materials
Molten salt has emerged as the premier heat transfer fluid (HTF) and thermal energy storage (TES) medium globally. Due to its wide operating temperature limits, low vapor pressure, high thermal conductivity, and high heat storage capacity, it is central to commercial Concentrated Solar Power (CSP) systems and heavy industrial heat extraction.
At the chemical level, "Solar Salt"—a eutectic binary mixture comprising 60% Sodium Nitrate (NaNO3) and 40% Potassium Nitrate (KNO3)—is the industry standard. It exhibits a melting point of approximately 220°C and remains chemically stable up to 565°C. Minimizing impurities (such as chloride and carbonate ions) is essential to limit corrosion in heat exchangers and piping systems. As a leading manufacturer in Shanxi, China, we specialize in refining these compounds to ensure longevity in high-temperature environments.
By blending nitrates, we achieve a eutectic mixture that melts at a lower temperature than the individual components (melting points of KNO3 and NaNO3 are 334°C and 308°C respectively). This lowers the risk of freezing in pipelines, optimizing the operational efficiency of power generation plants.
Exploring ternary mixtures, chloride salts, and ultra-high-temperature molten salt formulations
Adding calcium nitrate [Ca(NO3)2] to binary salts lowers the crystallization temperature down to 130°C. This significantly decreases energy demand for trace heating during periods of low solar radiation.
To operate at temperatures above 700°C, research is moving toward chloride mixtures (e.g., NaCl-KCl-MgCl2). These mixtures provide high thermal performance, though they require advanced nickel-based alloys to manage corrosion.
Carbonate mixtures (such as Li2CO3-Na2CO3-K2CO3) can withstand operating temperatures exceeding 800°C, making them suitable for next-generation solar tower reactors and nuclear energy applications.
To scale these technologies, Shanxi Vojin New Materials utilizes high-purity chemical processing lines. Our current research focuses on cost-effective corrosion inhibitors and nanoparticle-enhanced salts, which aim to increase specific heat capacity by up to 15%.
Enabling decarbonization and flexible energy management across heavy industries
Acting as both heat transfer fluid and thermal storage, molten salt enables solar plants to generate electricity 24/7, balancing peak grid demand.
Learn MoreReplacing coal-fired boilers by storing off-peak wind or solar electricity as high-temperature heat to produce continuous industrial steam.
Learn MoreHigh-purity potassium nitrate baths provide the ion-exchange medium required to temper display screen glass, increasing fracture resistance.
Learn MoreNitrite-nitrate mixtures provide stable heat transfer baths for quenching and tempering automotive and structural metal parts.
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Our production facilities in Shanxi are situated close to key raw material reserves. This proximity ensures a stable supply of resources and minimizes transport-related carbon footprint. With an annual capacity of 600,000 tons, Shanxi Vojin New Materials utilizes modern manufacturing technologies to maintain consistent quality.
We work closely with global logistics networks to offer reliable dry-bulk container and customized bag shipping, minimizing the risk of moisture absorption during sea transport.
Critical benchmarks to evaluate during procurement processes
Chloride contaminants damage stainless steel and alloy piping in high-temperature environments. Our refining processes keep chloride levels below 50 ppm, with ultra-pure grades reaching under 10 ppm.
Nitrate salts are hygroscopic. We offer custom packaging, moisture-barrier linings, and optional trace anti-caking agents to prevent clumping during storage.
All batches undergo quality inspection, accompanied by third-party certifications (SGS, ISO 9001, and REACH compliance documentation for European markets).
Welcome to learn more about Shanxi Vojin New Materials Co., Ltd.
Integrated experience in exporting operations. We ensure consistent quality and reliable delivery timelines for our global customers.
Annual output of 600,000 Tons of molten salts and related chemical products to meet large-scale industrial demands.
Experienced technical support and service teams. We provide prompt responses and tailored formulation solutions to customer requests.
Stay informed with updates on molten salt technology and energy storage solutions
The technology operates at higher temperatures, which directly impacts the generation efficiency of solar thermal power plants...
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Concentrated solar power plants convert solar energy to electricity. Eutectic salt mixtures act as the primary medium for continuous generation...
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Molten salt energy storage has emerged as a key solution to improve the reliability and efficiency of renewable energy networks...
Read More →Technical answers to common inquiries from chemical engineers and sourcing managers
Industrial, agricultural, and food-grade mineral compounds refined under strict quality standards
Collaborating with international buyers to supply raw materials and energy storage components
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