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Technology for manufacture of non-hygroscopic magnesium materials for building applications, using chemical wastes

A Russian company from Chelyabinsk, specialized in R&D in construction, developed a resource-efficient technology for manufacturing magnesium materials based on recycling the waste from refractory and chemical plants. The obtained high-strength heat-insulating materials can be used both for internal and external finish; they are fireproof and environmentally friendly. The company looks for partners for technical cooperation and/or commercial agreements with technical assistance. Efficient thermal insulation materials for walls are in great demand today, the wall structure requirements having been strengthened. Utilization of magnesium binding materials is of great interest, since they allow producing high-strength bioresistant and environmentally friendly construction materials. Yet, their wide use is hampered by the high hygroscopicity of these materials, which impairs their performance.
The Russian company has developed a technology for reducing the hygroscopicity of chlorine magnesium stone by modifying its structure with complex additives containing both bi- and trivalent iron cations. Being embedded in the structures of oxyhydrochloride phases, bivalent iron cations substitute the equivalent number of manganese cations, while trivalent iron cations become absorbed by hydrate phases of chlorine magnesium stone, reducing their superficial charges. The flint clay contained in the complex modifying additives contributes to the formation of low-soluble magnesium and calcium silicate hydrates, thus increasing the water resistance of magnesium stone, while keeping its low hygroscopicity. Modern vermiculite-containing filling agents are also introduced into magnesium materials; due to monomolecular forces inherent in their structures, they can absorb moisture from the surfaces of pores, thus establishing superficial diffusion or equilibrium moisture on both sides of the material, which produces breathable coating magnesium materials. The technology utilizes magnesium waste from refractory and chemical plants, including reactive magnesia, caustic dolomite, low-grade brucite, etc. to manufacture magnesium building materials.   Patents/Rights: Patents granted Type of Organisation: Get in contact with this organisation

» Type: Offer

» Reference: TORU20140606002

» Country: Rusia

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This project has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n° [605658].

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