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This section provides an overview for magnesite as well as their applications and principles. Also, please take a look at the list of 15 magnesite manufacturers and their company rankings. Here are the top-ranked magnesite companies as of December, 2024: 1.JSR International, 2.MAGNESITAS NAVARRAS, 3.Konoshima Chemical Co.,Ltd..
Table of Contents
Magnesite, primarily composed of magnesium carbonate, is a mineral. Although mainly magnesium carbonate, it occasionally contains trace amounts of iron, manganese, cobalt, and nickel. The iron-containing varieties are called breunelite.
Magnesite is predominantly used to produce magnesium oxide through heat treatment. Known as light-burned magnesite, this material is an essential refractory used for lining blast furnaces, kilns, and incinerators, thanks to its excellent heat storage properties. It also serves as a heat storage core in nighttime storage heaters and electric fireplaces. As a soil hardener, light-burned magnesite reacts with water, transitioning through magnesium hydroxide to form magnesium carbonate, a hardening agent, making it an environmentally friendly choice for agricultural applications.
Magnesite serves as a raw material for beads and various objects, prized for its ease of dyeing. It can be used as a substitute for turquoise or lapis lazuli or transformed into diverse ornaments through cutting, drilling, and polishing.
Additionally, magnesite acts as a binder in flooring materials (magnesite screed), a catalyst and filler in synthetic rubber manufacturing, and as a base material in systems designed to remove sulfur dioxide from industrial flue gases.
Magnesite is characterized by a rhombohedral or trigonal crystal structure, with a Mohs hardness of 3.5 to 4.5. It is transparent to white and displays a glassy luster. When exposed to ultraviolet light, it emits green or blue fluorescent and phosphorescent light. Calcining magnesite at around 1,000ºC leads to the desorption of carbon dioxide from magnesium carbonate, yielding magnesium oxide (MgO). The chemical formula for magnesium carbonate is MgCO3, with a molecular weight of 84.31. The anhydrate has a CAS number of 546-93-0 and is a white solid that decomposes at 350°C with a density of 2.958 g/cm3, exhibiting an odorless, tasteless, triangular crystal structure.
China is a major producer of magnesite. Magnesite can also be synthesized artificially by carbonating magnesium serpentinite, resulting in magnesium carbonate trihydrate (nesquihonite).
Magnesium carbonate requires careful handling. Wear protective glasses with side shields, long-sleeved protective clothing, and gloves. Ensure use within a local exhaust ventilation system. In the event of a fire, choose an extinguishing method suitable for the site and environmental conditions. For storage, keep in a cool, well-ventilated space, in sealed polyethylene containers, away from direct sunlight, and ensure the storage area is securely locked.
*Including some distributors, etc.
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Konoshima Chemical Co.,Ltd., established in 1917 and headquartered in Osaka, Japan, is a manufacturer and supplier of building materials, chemicals, and ceramics. The company's product portfolio includes gable boards, refractory panels, magnesium oxide, magnesium hydroxide, and functional ceramics. These products are utilized by various industries, including construction, real estate, chemical manufacturing, medical equipment, and electronics. The company holds both the ISO 9001 and ISO 14001 certificates for quality management and environmental management systems.
Star Grace Mining Co., Ltd., established in 1990, has headquarters in China, and is a manufacturer of magnesium oxide, magnesium sulfate heptahydrate, and kieserite for customers worldwide. The company's products are used in many markets, including fertilizer, feeds, chemicals, textiles, and steelmaking markets, with an export capacity of 188,000 million tons per, mostly to Latin America, Southeast Asia, and Europe. Star Grace Mining Co., Ltd. holds ISO 9001, ISO 14001, and FAMI-QS certifications, as well as being a REACH-registered organization.
Headquartered in India, Sri Raam Chemicals Private Limited is a company that specializes in Calcium and Magnesium Chloride. Founded in 2013, they manufacture, supply, export, and import these naturally occurring minerals. Sri Raam Chemicals Private Limited satisfies customer needs by providing simple payment options and competitive prices, enabling open communication, and delivering larger orders. They are certified to export to European Union countries and the USA, and are the only 100 percent Expert Oriented Unit that is approved by the Indian government.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | MAGNESITAS NAVARRAS |
21.7%
|
| 2 | JSR International |
17.4%
|
| 3 | Konoshima Chemical Co.,Ltd. |
13.0%
|
| 4 | Eshal Industries |
8.7%
|
| 5 | TMK International |
8.7%
|
| 6 | Shree Balajee Magnesite |
4.3%
|
| 7 | Yiming |
4.3%
|
| 8 | Sri Subramanian Chemicals |
4.3%
|
| 9 | SONGMAG |
4.3%
|
| 10 | SANKHLA BROTHERS |
4.3%
|
Derivation Method
The ranking is calculated based on the click share within the magnesite page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
India
|
5 | 45.5% |
|
China
|
3 | 27.3% |
|
Japan
|
1 | 9.1% |
| Pakistan | 1 | 9.1% |
Spain
|
1 | 9.1% |
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Konoshima Chemical Co.,Ltd.
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Magnesite is a naturally occurring magnesium carbonate, but our company's "Magthermo" is the world's first to successfully mass-produce it using a ...
