Composite mineralizer for barium calcium phosphoaluminate cement

Abstract

The invention relates to a mineralizer for cement production, and in particular, relates to a composite mineralizer for barium calcium phosphoaluminate cement. The composite mineralizer for the barium calcium phosphoaluminate cement comprises the main chemical components by the mass percentage: 20-54% of Fe2O3, 13.5-33.3% of SO3, 13.5-20.8% of MgO, 5-10.4% of CaF2, and 13.5-16.5% of Na2O or K2O, wherein the mixing mass percentage of the composite mineralizer in a barium calcium phosphoaluminate cement raw material is 1.25-10%. According to the composite mineralizer, SO3 comes from a variety of industrial waste gypsums, MgO comes from high-magnesium limestone, Fe2O3 comes from steel slag, and Na2O or K2O comes from cement main raw material impurities. According to the composite mineralizer for the barium calcium phosphoaluminate cement, cement clinker formation is promoted by introducing the compound mineralizer, the calcination temperature is reduced by 150-200 DEG C, the formation of a main mineral phase barium calcium phosphoaluminate is significantly promoted, a conventional rotary kiln production line can be applied to production of the barium calcium phosphoaluminate cement, the large-scale production is facilitated, and energy saving and consumption reduction of the production process are achieved.

Description

technical field

[0001] The invention relates to a building material, in particular to a calcium barium phosphate cement. Background technique

[0002] Barium calcium aluminate phosphate cement (main mineral phase barium calcium aluminum phosphate) is developed on the basis of aluminophosphate cement (main mineral phase calcium aluminophosphate), and the mechanical properties of cement paste are higher than that of aluminum phosphate Cement (28d strength 80MPa) is about 20-30%, and overcomes the shortcoming of the setting time of aluminophosphate cement that needs to be added with a coagulant before it can be applied. This makes barium calcium aluminum phosphate cement is expected to be used in important special construction projects, such as military, ocean, island reefs, tunnels, etc., with broad market prospects.

[0003] The main mineral phase in the barium calcium aluminum phosphate cement system is barium calcium aluminum phosphate, and its synthesis temperature is as ...

Images