Alit-leaf liter cement and preparation method thereof

Abstract

The invention discloses alite-leaf liter cement and a preparation method thereof, and the alite-leaf liter cement comprises: limestone; according to the formula, the raw materials comprise, by weight, 70%-72% of the raw materials, 6.5%-7.5% of sandstone, 6.8%-7.0% of fly ash, 9.2%-9.4% of gypsum, 1.4%-1.6% of copper slag, 2.2%-2.4% of phosphorus slag, 0.7%-0.9% of aluminum oxide and 1.1%-1.3% of silicon oxide. The preparation method of the alite-leaf liter cement comprises the following steps: mixing the raw materials together for a certain time, pressing the homogenized mixture into a mixture in a parallel epitaxial wafer shape by using water, and sintering the mixture at different temperatures of 1200-1350 DEG C at different time intervals, the samples are taken out at different heat preservation time of 0 h, 0.5 h, 1 h, 1.5 h and 2 h respectively.

Description

technical field [0001] The invention relates to the technical field of cement, in particular to Alite-Yelimit cement and a preparation method thereof. Background technique [0002] Alite-Yelimit cement mainly contains alumina stone, calcium oxide alumina, and minerals, which have been synthesized in recent decades. This type of cement has the properties of Portland cement and CSA cement. In addition, Alite-Yelimit cement is expected to be a promising low-energy cement due to its lower synthesis temperature, easy grinding properties, and potential to recombine more solid waste. [0003] Variations in the formation of alite and yelit, which can coexist at high temperatures. However, the reaction kinetics during clinker firing do not match, as alite is mainly formed in Portland cement clinker at around 1450 °C, while the pure phase of yerlimite decomposes rapidly after 1350 °C , Therefore, in order to improve the quality of clinker, dozens of experimental works have been carr...

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Problems solved by technology

Barium or strontium is incorporated into the rare earth solid solution in the following ways, and the temperature of yelimite is stabilized at 1380 degrees Celsius; (b) the formation temperature of yelimite is lowered by changing the properties of the liquid phase at high temperature by mineralizers, (c) by wave The secondary heat treatment method of Telan clinker changes the chemical process, although these methods have obtained satisfactory cement clinker in the laboratory, the preparation process of cement clinker is more complicated

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