As the global energy transition accelerates, Concentrated Solar Power (CSP) systems integrated with Thermal Energy Storage (TES) have emerged as crucial pillars for providing stable, dispatchable, and utility-scale green electricity. Within these advanced energy grids, molten salt acts as the primary heat transfer and storage medium. Historically, binary solar salts consisting of 60% sodium nitrate (NaNO3) and 40% potassium nitrate (KNO3) have defined the operational standards. However, modern technical requirements demand lower melting limits and broader operating temperature ranges to optimize thermodynamic efficiency. This is where Solar Grade Calcium Nitrate has revolutionized the industrial landscapes.
Beyond energy storage, high-purity calcium nitrate is expanding rapidly in advanced glass manufacturing, concrete setting acceleration, and precision water treatment processes. The industrial demand is shifting towards factories capable of delivering chemical purity levels featuring ultra-low chloride (Cl- < 0.1%) and iron ions (Fe3+ < 10 ppm), which are critical to preventing corrosion in industrial pipelines and stainless-steel storage tanks.
Transitioning from research laboratories to commercial utility plants requires scaling chemical processing systems. The crystallization of anhydrous solar-grade calcium nitrate represents a significant technical challenge. Ordinary calcium nitrate is highly hygroscopic, easily absorbing moisture to form hydrated structures like the tetrahydrate [Ca(NO3)2·4H2O]. If introduced into thermal systems, the sudden vaporization of trapped moisture can trigger catastrophic pressure surges and pipeline deterioration.
Our technical roadmap addresses this challenge directly. By utilizing multi-stage fluid bed drying chambers combined with high-precision vacuum dehydration technologies, Shanxi Vojin New Materials Co., Ltd. produces an ultra-dry formulation of solar-grade calcium nitrate. This specialized formulation guarantees a free-flowing granular state with a moisture content of less than 0.2%.
Developing ternary salt systems composed of Ca(NO3)2-KNO3-NaNO3 to achieve a low melting point threshold of 130°C. This extends the usable temperature window down to lower limits, reducing thermal stress on materials.
Doping high-purity salts with minor nano-fillers and complexing agents. This creates a protective passivation layer on stainless steel surfaces, extending the lifespan of storage tanks to over 30 years.
Advancing the upper thermal limit of ternary mixtures from 550°C to over 620°C. This allows steam turbines to run at higher temperatures and pressures, maximizing thermodynamic efficiency.
Ternary molten salts lowering melting limits and optimizing heat storage.
VIEW MOREChemical strengthening processes for specialty glass and screens.
VIEW MOREDecarbonizing industrial heating loops through thermal energy storage.
VIEW MORE100% water-soluble nutrient compounds for soil and hydroponic systems.
VIEW MOREDepending on regional climates, local energy strategies, and agricultural practices, the deployment of Solar Calcium Nitrate varies significantly. Shanxi Vojin New Materials Co., Ltd. configures specialized formulations tailored to distinct application environments.
In hot desert environments, solar arrays face high daytime temperatures and cool nights. CSP plants here utilize ternary mixtures with Calcium Nitrate to prevent molten salt from solidifying at night, reducing the need for auxiliary heaters and conserving stored energy.
Industrial facilities looking to replace fossil-fuel boilers use molten salt loops to store heat during off-peak wind periods. High-purity calcium nitrate ensures these storage systems can operate safely at lower temperatures without freezing, integrating smoothly with existing steam networks.
In greenhouse systems across North America and Almeria, Spain, our highly refined calcium nitrate provides clean, fast-acting calcium and nitrogen. Free of heavy metals and insoluble residues, it keeps drip irrigation lines clear and supports crop health.
Driven since 2000, we have been committed to the entrepreneurial spirit and passion for innovation. Our team takes pride in delivering dependable products and services with a quality distinction in thermal energy storage & water-soluble fertilizer industries globally.
With decades of experience, we provide high-performance chemical formulations designed for clean energy and modern agriculture, supporting projects in over 40 countries.
View More About UsOur years of manufacturing experience and refined products provide you with better performance.
For global buyers, supply chain resilience involves raw material security, stable processing energy, and efficient transport logistics. Shanxi Vojin New Materials Co., Ltd. operates from Shanxi Province, the heart of China’s inorganic chemical industry. This location provides direct access to high-quality nitric acid and calcium carbonate raw materials, reducing transit times and protecting production schedules from market volatility.
Our manufacturing facilities feature fully automated production lines, integrating crystallization, dehydration, and packaging into a single closed loop. This system minimizes manual handling, lowering the risk of moisture absorption and contamination.
Integrated experience on exporting operation. Always assure your customers good quality.
Annual output 600,000 Tons of molten salts and related nitrate products.
Experienced technology skill & service team. Quick response to our customers.
Multiple items for selection such as KNO3, NaNO3, and Ca(NO3)2 to meet various customer needs.
Entering international chemical markets requires meeting strict safety, environmental, and quality standards. Our industrial-grade nitrates, including calcium nitrate, sodium nitrate, and potassium nitrate, are manufactured in compliance with international regulatory frameworks.
We maintain full compliance with European REACH regulations, guaranteeing that our chemical shipments meet EU environmental and safety expectations. Our packaging uses heavy-duty, moisture-resistant PE/PP bags (available in 25kg, 50kg, and 1000kg jumbo sizes) to prevent water absorption during sea transport, ensuring the product arrives dry and ready for use.
The technology operates at higher temperatures, directly improving overall power generation efficiency...
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Concentrated solar power plants convert solar energy to dispatchable electricity using flexible molten salt arrays...
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Molten salt storage solutions provide a reliable option for stabilizing grids and managing renewable energy supply...
VIEW MOREThe demand for industrial nitrates is expanding beyond traditional agriculture. Today, solar-grade calcium nitrate, sodium nitrate, and potassium nitrate are vital components in energy storage infrastructure worldwide. As utilities work to balance intermittent solar and wind power, thermal energy storage (TES) provides a cost-effective way to store gigawatts of heat.
By optimizing the ratio of calcium, sodium, and potassium nitrates, engineers can customize the freezing point and thermal capacity of molten salts for specific climates. This flexibility helps thermal power plants run efficiently in various geographical regions.
Through ongoing process improvements and collaborative research, Shanxi Vojin New Materials Co., Ltd. delivers high-purity nitrate products that support the global shift toward clean, dispatchable energy.
Solar Grade Calcium Nitrate is formulated for high-temperature thermal storage, requiring ultra-low moisture (typically < 0.2%) and minimal chloride and iron impurities to prevent pipeline corrosion. Agricultural grade is designed for water solubility and plant nutrient uptake, which tolerates higher natural water and mineral content.
Adding calcium nitrate to a standard sodium nitrate and potassium nitrate mixture forms a ternary eutectic salt. This reduces the mixture's freezing point from 220°C to around 130°C, lowering the energy needed to keep the salt liquid and reducing pipeline freezing risks in cooler weather.
Standard ternary systems are stable up to 550°C. With high-purity inputs and stabilizers, they can operate close to 600°C without significant chemical decomposition, helping plants achieve higher thermal-to-electric conversion efficiency.
We select high-grade raw materials and use a multi-stage crystallization process to wash out chlorides. This keeps chloride levels below 0.1%, protecting stainless steel storage tanks from pitting and stress corrosion cracking.
We pack our products in heavy-duty polyethylene (PE) lined woven bags, sealed to prevent moisture ingress. For bulk transport, we offer 1000kg jumbo bags with moisture barrier liners, suitable for long-distance ocean shipping.
Our facility has an annual production capacity of 600,000 tons, allowing us to maintain a stable supply for large-scale agricultural distributors and industrial energy projects worldwide.
Yes, all our exported nitrate products, including calcium nitrate, sodium nitrate, and potassium nitrate, comply with EU REACH standards, meeting international safety and quality requirements.
Yes, we can pre-blend calcium nitrate, potassium nitrate, and sodium nitrate to the exact ratios requested by project engineers, shipping ready-to-melt mixtures directly to the site.
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