Fiber reinforced magnesium oxychloride red mud plate and preparation method

Abstract

The invention discloses a fiber reinforced magnesium oxychloride red mud plate and a preparation method, and belongs to the utilization technology of waste material-red mud produced in alumina industry. The plate mainly comprises a solid blending material and brine, wherein the weight ratio of the brine is 15-30%, and the solid blending material comprises the following components by weight ratio: 30-70% of red mud, MgO of 25-60 % and 5-10% of reinforcing fiber; and 0.5-5% of modifier is added into the brine. The wet red mud, the magnesium oxide, the reinforcing fiber and the brine added with the modifier are subjected to extrusion molding by roller pressure after being uniformly mixed, naturally harden after solidification, and form a standard material or profile after shear processing. The plate is of a high-strength solidification plate with high content of red mud, has the advantages of fireproof, waterproof and anti-static performances, heat and noise insulation, strong pressure resistance, good fracture resistance, good corrosion resistance and the like, is widely used in construction, decoration and other industries, and can digest a lot of red mud to truly turn waste into wealth.

Description

technical field [0001] The invention relates to the utilization technology of red mud, a waste material produced in the alumina industry, specifically a high-performance fiber-reinforced magnesium oxychloride red mud plate prepared by using wet red mud as the main raw material and its preparation method, which belongs to the preparation method of using solid waste field of building materials. Background technique [0002] At present, the red mud produced by the alumina industry has piled up into mountains, and the huge amount has caused great harm to the environment. Although the process of selecting iron powder from red mud is mature, the selected red mud still needs to be discharged to red mud storage or red mud storage yard, which cannot have a substantial impact on the hazards of red mud. There is also a method of using red mud to prepare sintered ceramic tiles and building materials, but due to the high water content of red mud, generally more than 20%; the treatment p...

AI Technical Summary

Problems solved by technology

The situation of other patents is due to the high cost and difficulty in forming an effective market, so I won’t repeat them here

To sum up, patents related to the utilization of red mud have high energy consumption and difficult market operations, making it difficult to form a truly effective market space

[0003] At present, the building material gypsum board widely used in the market has the disadvantages of fear of water, poor sound insulation effect, low hardness, poor mechanical properties, and low toughness, which limits its application.

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