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Improve fused magnesia technology and equipment

2020-09-18 11:00:00
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Due to the extremely competitive price of fused magnesia in China, a large number of western seawater magnesia production enterprises have closed down. Price of fused magnesia Ordinary fused magnesia process is currently in the world market of fused magnesia with MgO content >98.5%, and China occupies 90% of it, and it is more widely used. However, this product has high energy consumption and requires superior raw materials. Therefore, the comprehensive promotion of improved technical equipment measures in the fused magnesia industry will help reduce energy consumption and control quality, which is an inevitable trend for future development. 97 fused magnesia

At present, Liaoning's magnesia-based synthetic raw materials mainly include fused magnesia chromium sand, sintered magnesia calcium sand, sintered magnesia alumina spinel sand, sintered magnesia alumina iron sand, etc. The annual output exceeds 200,000 tons. Magnesia-calcium refractories have excellent performance, but due to the hydration problem of CaO, their application is limited. Therefore, the water-proof problem of magnesia-calcium refractories should be studied. It should be pointed out that, due to the presence of CaO, magnesium-calcium refractories can remove sulfur and phosphorus impurities in steelmaking; while CaO exists, non-hydration is impossible, only to prevent its hydration.

With the increase in environmental protection, chromium-containing refractories will withdraw from the market, and the research and production of alternative products is imperative. Therefore, further development and production of MgO-Al2O3, MgO-CaO, MgO-ZrO2, MgO-SiO2 should be made for different purposes. , MgO-Fe2O3, MgO-CaO-Fe2O3, MgO-Al2O3-ZrO2, MgO-CaO-ZrO2, MgO-Al2O3-Fe2O3 (FeO) and other high-quality synthetic magnesium raw materials.

Generally speaking, as a non-renewable and indispensable strategic resource, magnesite is the focus of all related work in the future to limit and reduce its mining and improve its resource utilization. Therefore, the country should greatly reduce the export quota of magnesia and restrict the export of low-value-added raw materials and ordinary magnesia products.

At the same time, enterprises with mining resources and conditions are encouraged to carry out large-scale technological transformation and equipment renewal, or to decentralize raw materials, and to concentrate on the construction of a number of large raw material bases. Rock stripping in mines, purification of low-grade ore, construction of large-scale light-burning and calcining equipment, and industrialization of new sand making processes require a lot of capital and new technical support, and there are certain risks. It is hoped that relevant national departments will provide policies, funds, and technology And other aspects.

Only by establishing large-scale raw material bases, adopting systematic advanced technology, and forming economies of scale, and under the guidance of strong national policies and regulations, can it be possible to eliminate seriously polluting raw material production enterprises in accordance with the principles of market economy and achieve elimination of backwardness. As the world’s magnesia refractory raw material production base, China can only adhere to the effective and reasonable use of magnesite resources, adhere to the business philosophy of low carbon, low energy consumption, low emissions, low pollution, economic benefits, resources, and environmental protection, and adhere to technology Innovation and adjustment of product structure can achieve long-term, stable and sustainable development.


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Mobile: 15084042222 Chairman Zhu

Mobile: 13019619166 Former Manager

URL:www.gmref.cn

Address: Fanma Village, Mafeng Town, Haicheng City, Anshan City

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