Typical products in refractory industry are light - burnt magnesia

As a kind of non-renewable and indispensable strategic resource, it is the focus of all related work in the future to limit and reduce the exploitation of light magnesite and improve its resource utilization rate. Therefore, enterprises with mine resources and conditions can be encouraged to carry out large-scale technological transformation and equipment renewal, or to decentralize the exploitation of raw materials, so as to centralize the construction of a number of large-scale raw materials bases. Magnesia refractory raw material industry is a typical resource industry. Since China's reform and opening up in the 1980s, the rapid increase in the demand for magnesite raw materials has resulted in a low entry threshold for the processing of primary raw materials, leading to serious damage to the rational development of magnesite. For economic reasons, the price of a magnesite superore is about five times that of a grade III ore. Extensive mining, rich mining and poor abandoned serious phenomenon, resulting in a great waste of resources, and more serious is mining and stripping imbalance. In 2005, I participated in the "point survey" of 12 key magnesite mountains in Liaoning province. It was estimated that at that time, the debt for rock stripping reached more than 100 million tons. Since then, the situation has not fundamentally changed, which makes it difficult to extract some high-quality ores.

In recent years, the manufacturer of light burned magnesia said, the original meaning of superfine ore has been very rare, the shortage of primary ore, ore quality slide caused the average MgO content of magnesia to drop by more than 0.5%. Therefore, in order to make rational and effective use of limited resources, it is necessary to conscientiously implement relevant laws and regulations, and further integrate magnesite mines and old mines with an annual mining capacity of more than 300,000 tons to implement scale mining and intensive management. Make a thorough survey of existing mining areas and conduct mining according to the mining design. Key mines shall make up for the arrears of rock stripping and extend the service life of mines; Popularize ore dressing technology and make comprehensive use of medium and low grade ore.

At present, relevant enterprises have gradually realized that it is no longer possible to maintain the production of high-quality raw materials by relying only on raw materials. Only by mineral separation and purification of the raw ore can the primary raw material of high quality be produced by light burning magnesia to ensure the normal production of raw materials. Following the successful launch of the flotation system in Haicheng Magnesium Mine General Plant, a number of enterprises have completed flotation projects, and other enterprises have also begun to prepare. Meanwhile, the comprehensive utilization of flotation tailings is also being studied. In the next three to five years, the popularization of magnesite flotation technology and the follow-up processing of high-purity Mg (OH) 2 produced by xizang cryptocrystalline magnesite and Qinghai "Yanghu Magnesite extraction" will provide high-quality raw material supply guarantee for China's magnesite production.