Celestite Concentrate

Celestite concentrate is a specific grade of celestine (SrSO4) that possesses unique properties, such as high amounts of strontium and lower water levels. Due to its particular features, this grade finds application in various sectors of industry, namely battery manufacturing, pyrotechnics, and glass and ceramics. In this article, we will review this substance’s properties, manufacturing process, applications, and reliable providers. Keep reading and find out more.

Before going through this article, discussing a prominent celestite concentrate manufacturer, supplier, and exporter worldwide seems helpful. JAM Group Co. is a powerful player in the international celestite market. This company has established good access to Iran’s rich celestite mines and manages several well-equipped factories that allow it to provide a pure grade of celestite concentrate. JAM Group offers these high-quality products in standard packing and reliable shipping options so that every customer can enjoy their products, regardless of location. To find out more about this company, we highly recommend navigating to About Us.


What is Celestite Concentrate?

Celestine is a mineral celebrated for its ethereal blue hue reminiscent of the sky, which is commonly known as celestite. You can read more about it by going through the article What is the Difference Between Celestine and Celestite? Some believe this mineral, part of the sulfate family, derives its name from the Latin “caelestis,” hinting at its heavenly appearance. Found primarily in sedimentary rock formations, celestite often coexists with minerals like gypsum, calcite, and sulfur. Its orthorhombic crystal structure forms prismatic shapes, ranging from minute to substantial sizes, and can appear as singular crystals or clusters. While its most common color is soft sky blue, celestite can also appear colorless, white, or occasionally yellow. The trace amounts of strontium imbue it with its distinctive blue shade. Typically, celestite exhibits a transparency that varies from clear to translucent, adding to its allure. To read more about different colors of celestite, we recommend having a look at What Color is Celestite? A Detailed Guide.

Celestite concentrate, a refined form of the versatile mineral celestite, plays a significant role in various industrial applications. This concentrated variant is produced through a series of crushing and separation processes, aiming to enhance the strontium content, a key element in celestite. Its importance lies in its utility across different sectors, such as in the manufacturing of strontium carbonate for electronics and in creating vibrant hues in pyrotechnics. Furthermore, its incorporation into metal alloys, notably in zinc refinement and aluminum alloy improvement, demonstrates its wide-ranging industrial relevance. Therefore, while celestite in its natural form appeals to various applications, such as mineral collectors, for its aesthetic value, the concentrate is an indispensable resource in different industrial domains.

Celestite Concentrate Properties

Celestite concentrate is highly regarded in various industries for its distinct properties. Compared to its raw form, the concentrate offers enhanced features, making it a versatile and efficient choice in industrial applications. The processing of celestite into a concentrate significantly elevates its utility by enhancing certain vital attributes, making it an invaluable component in several manufacturing processes.

  • High Strontium Content: The most notable property of celestite concentrate is its enriched strontium content. This makes it a primary source for strontium extraction, crucial for producing various strontium compounds used in electronics, metallurgy, and pyrotechnics.
  • Reduced Water Content: The concentrate has a significantly lower moisture level, which is advantageous for transportation and storage. This property reduces the risk of material degradation during transit, particularly over long distances, and simplifies handling.
  • Powdery Texture: Celestite concentrate typically presents as a fine powder. This physical form is beneficial for industrial use, allowing for easy mixing and processing in various manufacturing operations.
  • Thermal Stability: It exhibits excellent stability under high temperatures, making it suitable for use in processes that involve heat, such as metal refining and glass production.
  • Moderate Solubility in Water: Its solubility in water, though moderate, is an essential characteristic for certain chemical processes, enabling it to be used effectively in the synthesis of other strontium-based chemicals.

These properties collectively make celestite concentrate a valuable asset in diverse industrial sectors, highlighting its importance beyond its natural state. To discover more about celestite properties, simply click on A Guide on Celestite Properties: The Physical, Chemical, Optical, and Metaphysical Aspects of the Stone.


Different Grades of Celestite Concentrate

The grading of celestite concentrate is an essential process that serves diverse industrial needs. This categorization is based not only on purity levels but also on the specific end-uses and unique properties of the concentrate. For example, the Chemical Grade, known for its high strontium content and minimal impurities, is vital in producing high-quality strontium compounds for the chemical industry. In contrast, while still rich in strontium, the metallurgical grade contains more impurities and is apt for metallurgical applications, like alloy production.

With its lower strontium levels, the glass and ceramic grade meets the specific demands of glass and ceramic manufacturing, enhancing color and clarity in these materials. The most basic common grade is suited for less stringent applications where high purity is not a priority. Beyond these standard categories, manufacturers also offer Custom Grades. These are specially tailored to fulfill the unique requirements of certain industries, ensuring that specific chemical or physical properties are precisely met. You can read more about these categorizations and their details in the following.

Grades Based on Purity

Grading based on strontium sulfate (SrSO4) content is a standard method manufacturers use to indicate the purity of their products. The highest grade of celestite concentrate, often revered for its exceptional purity, contains about 95% SrSO4. This premium composition is complemented by smaller percentages of other substances, such as:

  • Calcium sulfate (CaSO4);
  • Barium sulfate (BaSO4);
  • Silicon dioxide (SiO2);
  • Iron oxide (Fe2O3). 

Such a composition is critical in applications that demand high-purity materials, like in specialized chemical production.

In contrast, other grades of celestite concentrate present varied proportions of SrSO4, tailored to meet diverse industrial applications. These variations result in different concentrations of the accompanying compounds like CaSO4, BaSO4, SiO2, and Fe2O3, providing manufacturers with the flexibility to cater to a wide range of industrial requirements, from high-end chemical processes to broader industrial uses. 

Grades Based on Application

Manufacturers also tailor the grades of celestite concentrate to align with specific applications, ensuring each variant is optimized for its intended use. This customization process involves adjusting the chemical and physical properties of the concentrate to maximize performance in different industrial settings. For instance, a grade designed for use in the chemical industry might be engineered for higher purity to facilitate the production of high-quality strontium compounds. In contrast, a grade meant for the glass and ceramic industry would focus on properties like color enhancement and clarity, which are critical in these sectors.

Custom Grades

The domain of custom grades lies beyond the standard grades of celestite concentrate categorized by purity and specific application. These unique formulations are crafted to meet specialized requirements not addressed by conventional grades. Manufacturers create these custom grades in response to specific customer requests or for use in niche applications where standard compositions may fall short. The bespoke nature of these products means they can vary significantly in composition and properties, tailored precisely to the unique demands of the client or the rare application they are intended for.

For instance, a customer working in a highly specialized chemical industry sector may require a celestite concentrate with a unique blend of strontium content and specific impurities, or perhaps an unusual particle size distribution that is not typically available in standard grades. Similarly, for rare applications in advanced materials or research fields, the celestite concentrate may need to possess exceptional purity levels or specific physical characteristics that are not found in off-the-shelf products.


Celestite Concentrate Production Process

Producing celestite concentrate is an orchestrated series of steps, each crucial in shaping the final product’s quality and grade. Starting from the extraction of raw celestite ore to its refinement into a high-purity concentrate, every stage plays a vital role. The desired grade of the final product dictates which specific processes are essential.

These steps may include crushing and screening for size reduction, gravity separation for initial purification, flotation for fine-tuning the purity, and drying to ensure stability and ease of handling. The comprehensive nature of this process ensures that the concentrate meets exact specifications for various industrial uses. For those seeking to understand the nuances and technicalities of each stage, the following paragraphs offer a detailed exploration of the multiple phases of celestite concentrate production.

First Stage: Mining

The journey to produce celestite concentrate begins with mining celestite ore, a process anchored in traditional and time-tested mining techniques. The extraction starts with drilling into the earth, where celestite deposits are known to exist. Precision in drilling is crucial to access the ore efficiently while ensuring the safety of the operation. Following drilling, controlled blasting is employed. This step involves carefully calculated use of explosives to break apart the celestite ore from its natural bedrock, allowing for easier extraction.

Once the ore is fragmented, the next crucial phase is hauling. Large machinery is used to transport the broken ore from the depths of the mine to the surface. This task demands careful planning to handle the ore delicately, preventing unnecessary loss. Each step – drilling, blasting, and hauling – requires skilled professionals and sophisticated equipment to ensure that the ore reaches the surface in a condition suitable for the subsequent stages of concentrate production.

Second Stage: Crushing and Screening

The second stage in producing celestite concentrate is the critical process of crushing and screening. This step begins with the run-of-mine celestite ore being fed into a jaw crusher, which efficiently reduces the size of the ore. The crushing involves two jaw crushers that break down the ore into smaller pieces. Subsequently, these crushed materials are passed onto a circular vibrating screen. This screening operation plays a pivotal role in separating the crushed ore based on size.

Ore particles larger than a predetermined size, often set at 30mm, are redirected back to the fine-jaw crusher for further crushing. This ensures that the material reaches the desired size for efficient later-stage processing. In contrast, the materials falling within the 8-30mm size range are directed towards sorting jiggers for further classification and separation, while those smaller than 8mm are handled separately.

This careful sizing of the ore is vital to ensure that each particle is optimally processed in the subsequent stages of celestite concentrate production. Through this methodical approach of crushing and screening, manufacturers can effectively segregate the ore based on size, which is crucial for achieving a high-quality concentrate. The ultimate goal of this stage is to prepare the celestite ore for the next steps in the concentration process, ensuring maximum efficiency and product quality.

Third Stage: Gravity Separation

In transforming celestite ore into a usable concentrate, the third stage is gravity separation. This method capitalizes on the principle that particles in a mixture have different weights, enabling their separation using gravitational forces. It’s a crucial process for isolating celestite from accompanying minerals. The principle of gravity separation is straightforward yet effective: components of the mixture, having varying specific weights, respond differently to gravity, leading to their segregation.

One common approach in gravity separation involves using a vibrating screen deck with an incline. This setup facilitates the movement of materials across the screen. Additionally, some systems employ a vacuum to lift the particles, enhancing the separation process. The effectiveness of gravity separation depends on the differing weights of the celestite and the impurities within the ore. As the mixture moves across the inclined vibrating screen, the heavier celestite particles tend to move to a lower level, while lighter impurities are carried away.

This stage is fundamental in ensuring that the celestite ore is purified efficiently, setting the stage for further refinement in the production process. By leveraging the natural force of gravity, this method provides an efficient and cost-effective way to concentrate the celestite, preparing it for the subsequent processing stages. The goal here is to maximize celestite yield while minimizing unwanted materials, paving the way for a high-quality end product.

The Fourth Stage: Flotation

Flotation is another vital stage in the production process of celestite concentrate, commonly employed as a complementary method to gravity separation. While gravity separation effectively segregates celestite based on density, flotation provides a more nuanced purification by targeting the mineral’s surface properties. This stage is especially vital when the ore still harbors impurities post-gravity separation.

Froth flotation, the technique used in this process, depends on the differences in hydrophobicity between celestite and the surrounding gangue minerals. In this process, chemicals are added to create a froth, and the ore is agitated. The hydrophobic celestite particles attach to air bubbles and rise to the surface, forming a froth layer that can be skimmed off while the hydrophilic impurities settle at the bottom. This separation is based on the affinity of celestite particles to repel water, distinguishing them from the undesired materials.

The flotation process is crucial in enhancing the purity of celestite concentrate, ensuring that the final product is free from unwanted mineral impurities. Manufacturers might opt for flotation, gravity separation, or a combination of both, depending on the specific characteristics of the ore and the desired purity level of the concentrate.

The Fifth Stage: Drying

Following the flotation process, drying comes, which is a crucial stage in the production of celestite concentrate. This step is essential for removing moisture from the concentrate, ensuring the material’s quality and ease of handling during subsequent transportation and storage. The process involves exposing the wet celestite concentrate to heat, effectively evaporating the water content.

The drying of celestite concentrate is not merely about moisture removal; it is also a matter of maintaining the material’s integrity. Proper drying prevents clumping and caking, which could otherwise occur if the concentrate retained too much moisture. This is particularly important for maintaining the flowability of the concentrate, ensuring it can be easily processed in subsequent manufacturing steps.

Manufacturers utilize various types of industrial dryers to achieve the desired dryness, with the selection often depending on the production scale and the specific characteristics of the celestite concentrate. The goal is to balance efficient moisture removal and energy use, ensuring the process is economically viable while maintaining the high quality of the concentrate. The dried celestite concentrate is then ready for packaging and distribution, marking a significant step towards its final application in various industries.


Celestite Concentrate Applications

The distinctive properties of celestite concentrate, such as its high strontium content, unique chemical and physical characteristics, and low moisture levels, render it a highly reliable material in various industrial applications. Its rich strontium content, for example, is instrumental in producing a wide array of strontium compounds. The physical properties of celestite concentrate, including its stability and granularity, further enhance its usability in industries like glass and ceramics, which contribute to improved product features. The following sections specify how celestite concentrate is utilized across different industries.

In the Production of Strontium Compounds

Celestite concentrate is a crucial resource in the production of various strontium compounds, which have wide-ranging applications across multiple industries. These compounds, derived from the high strontium content in celestite, are integral to several critical processes and products:

  • Pyrotechnics: Strontium compounds, mainly strontium carbonate, are indispensable for creating vivid red hues in fireworks and flares. The bright red coloration is a signature effect produced by strontium.
  • Glass and Ceramics: In the manufacturing of glass and ceramics, strontium compounds contribute significantly to improving qualities like transparency, hardness, and thermal resistance. This enhancement is crucial for producing high-quality, durable products.
  • Television and Electronics: Another critical application is using strontium ferrite in television manufacturing and electronic devices such as speakers and hard drives. These compounds are used to produce powerful magnets essential for these devices.
  • Radiography: In medical radiography, certain strontium compounds serve as contrast agents, enhancing imaging quality and clarity, which is vital for accurate diagnosis.

It is helpful to mention that you can read more about celestite uses by clicking on A Thorough Look at Celestite Uses in Daily Life and Industry.

In Cement Production

Celestite, added in minor quantities during cement production, enhances the strength and durability of concrete. This additive improves the structural integrity of concrete, making it a valuable component in modern construction.

In Battery Manufacturing

Strontium compounds, extracted from celestite, find use in specific types of batteries, including nickel-metal hydride (NiMH) batteries. These compounds contribute to the batteries’ efficiency and longevity, which are crucial in energy storage technologies.

In Environmental Applications

In environmental protection, strontium sulfate, a compound derived from celestite, is utilized in wastewater treatment processes. Its application helps remove contaminants, significantly improving water quality and contributing to environmental sustainability.


About JAM Group’s Celestite Concentrate

JAM Group Co., renowned for its expertise in the production of celestite concentrate, has established itself as a trusted manufacturer, supplier, and exporter in the industry. Strategically located in Iran, a region abundant in celestite mines, the company benefits from the unique characteristics of Iranian Celestite, which stands out for its quality on a global scale. Major mines such as Dehloran, Semnan, Behbahan, Shahrood, Neyshabur, and Varamin form the backbone of its supply chain.

Equipped with advanced factories and a team of experienced professionals, JAM Group Co. consistently delivers high-quality celestite concentrates. The company takes pride in utilizing international standards for packaging, ensuring each product’s safety and integrity during transportation. Customers have the flexibility to choose their preferred packaging and shipping methods, allowing for a customized and stress-free purchasing experience. This adaptability extends to various shipping options offered by JAM Group Co., making their high-grade celestite concentrate accessible to a global clientele. JAM Group Co.’s commitment to quality and its strategic location and customer-centric approach position it as a reliable choice for businesses and industries seeking premium celestite concentrate. The company’s ability to cater to diverse needs and ensure product safety and satisfaction underscores its reputation in the international market. To acquire additional information, you may want to click on About Us.



Celestite concentrate is pivotal in various industries due to its high strontium content, unique chemical and physical properties, and low moisture levels. The production process of this valuable mineral begins with mining and extends through stages like crushing, screening, gravity separation, flotation, and drying, all contributing to its final quality and grade. The diverse applications of the concentrated grade of celestite range from producing strontium compounds used in pyrotechnics, glass, ceramics, and radiography to its usage in cement production, battery manufacturing, and environmental applications like wastewater treatment.