Magnesium phosphate cement prepared by using magnesium oxide byproduct in process of extracting lithium carbonate from salt lake

Abstract

The invention relates to magnesium phosphate cement prepared by using a magnesium oxide byproduct in the process of extracting lithium carbonate from salt lake. The cement is prepared by uniformly mixing the following raw materials in part by weight: 35 to 50 parts of the magnesium oxide byproduct of the salt lake lithium carbonate, 25 to 55 parts of dihydric phosphate, 2 to 10 parts of adjustable solidification agent and 5 to 35 parts of industrial waste residue powder. The magnesium phosphate cement has the advantages that: the condensing time is randomly adjustable from several minutes to several hours; the magnesium phosphate cement has early strength, high strength, and high bonding strength; later strength is retained; and minimum inflation, low-temperature quick condensing and hardening can be realized and the like. The construction process is simple; the magnesium phosphate cement is extremely suitable for emergent repairing for damages, such as stripping, cracking and the like, of engineering structures in various fields, such as building engineering, traffic engineering and the like, is applied to manufacturing of building material products, such as building mortar, concrete bricks and building blocks, heat preservation wall plates, heat insulation roofs and the like, and is used for curing agents for treating wastes, such as nuclear wastes, urban garbage, sludge andthe like.

Description

technical field [0001] The invention relates to cement in the technical fields of construction engineering and traffic engineering, in particular to a magnesium phosphate cement prepared by using magnesium oxide as a by-product of lithium carbonate in salt lakes. Background technique [0002] In construction engineering and traffic engineering, engineering structures often require rapid repairs, hours Therefore, emergency repair cementitious materials in the field of civil engineering continue to emerge. At present, the common emergency repairing cementitious materials are mainly some organic epoxy resins, methyl methacrylate, initiators and plasticizers compounded polymer building structural adhesives, but the price of organic materials is expensive, and its resistance Durability such as aging and resistance to ultraviolet radiation is difficult to meet the long-term service life requirements of engineering structures. In order to avoid reducing the cost of repairing oper...

AI Technical Summary

Problems solved by technology

However, magnesium phosphate cement must use dead-burned magnesia that has been calcined at high temperature, which has very high energy consumption and high price, which seriously restricts the popularization and application of this cementitious material in engineering structures.