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Development prospect of high purity Magnesium Oxide

2019/03/12 11:17
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Magnesium Oxide is a high-purity magnesium salt of fine chemical products, widely used in rubber, plastic, paint, cable senior senior, senior ceramics, papermaking and pharmaceutical industry, Magnesium Oxide is also the production of high purity magnesia with high purity raw materials, it is the best raw material for the production of oriented silicon steel sheet for Magnesium Oxide. China is Magnesium Oxide producer, Magnesium Oxide primary products of low purity and low level of a large number of exports, but on the other hand, high pure Magnesium Oxide and other high technology content, high value-added products production is very small, can not meet the requirements of the development of China's industrial production, relying on import, the development of our own high pure Magnesium Oxide the broad prospects for development.

China is rich in magnesium resources, of which the main raw materials for producing Magnesium Oxide are solid minerals and liquid minerals. Solid minerals are mainly dolomite, magnesite, brucite, water magnesite, serpentine, asbestos tailings. Magnesite, China's reserves of more than 30 tons, ranking first in the world. Dolomite is found in all provinces and autonomous regions of China, with proven reserves of more than 40 tons. Brucite is a rare high magnesium mineral. The theoretical mass fraction of Magnesium Oxide is 69%. Serpentine is a kind of high magnesium mineral. The serpentine mineral resources in China are abundant and widely distributed. The actual water magnesite reserves of more than 1 tons. Natural water and basic magnesium carbonate.

Liquid ore refers to magnesium containing solution, mainly sea water, underground brine and Saline Lake brine. The magnesium salt reserves in China's Qaidam Basin are as high as 4.81Gt, especially Saline Lake, which is the largest potassium magnesium salt symbiotic Saline Lake in the world.

For a long time, Magnesium Oxide, dolomite and other solid ore are used as raw materials in China's production. The production scale of Magnesium Oxide's production enterprises is small, and the annual output reaches thousands of tons. Most of them are between 300 and 500 tons. The former equipment is obsolete; on the other hand, the content of impurities in Magnesium Oxide is higher, which leads to lower quality of products. Although in recent years the fine Magnesium Oxide products research, but also the introduction of foreign advanced equipment, product quality has improved, but still less than 95% of the purity of primary products, and further improve the purity. There are a lot of technical problems, solve these problems will greatly increase the cost of production

Using seawater and brine as the raw material production of Magnesium Oxide, the main methods currently used in domestic with lime (or lime dolomite) method, ammonium bicarbonate, soda. Among them, the shortcoming of lime method is that the content of calcium oxide is high, and the separation is difficult. The quality of Magnesium Oxide is less than 96%, and the quality will be greatly improved. Ammonium bicarbonate method can produce high quality of Magnesium Oxide, but the poor operating environment, high energy consumption of ammonia recovery process, the production of high purity and high cost of Magnesium Oxide. Caustic soda production of Magnesium Oxide, high quality products, but it is difficult to pass the cost. To this end, the domestic production of high-purity Magnesium Oxide with brine as raw material is very few, and the production is very small.

Type of Magnesium Oxide products is various, including Magnesium Oxide (Magnesium Oxide light industry), Magnesium Oxide, Magnesium Oxide, electrical activity of Magnesium Oxide, Magnesium Oxide, heavy magnetic calcination of Magnesium Oxide, Magnesium Oxide, Magnesium Oxide, silicon steel grade, pharmaceutical grade high purity reagent grade Magnesium Oxide, Magnesium Oxide. Different Magnesium Oxide grade, functional Magnesium Oxide prices are far apart. The yield of Magnesium Oxide products in our ordinary level, a large number of exports, the weak market, companies compete for market, compete to lower prices, resulting in enterprise economic benefit is poor or even losses; high pure Magnesium Oxide, Magnesium Oxide, Magnesium Oxide and some other active silicon fine Magnesium Oxide market demand is relatively large, imports a large number of products, market prospects. Therefore, to promote the structural adjustment of magnesium, to speed up the research and development of magnesium salt fine products, to produce functional Magnesium Oxide products has become the domestic development trend.