Novel energy-saving consumption-reducing dry-process cement clinker and preparation method thereof

Abstract

The invention discloses a novel energy-saving consumption-reducing dry-process cement clinker. The cement clinker is prepared from a raw material through sintering, wherein the raw material is mainly composed of limestone, an argillaceous material and a ferruginous material. The cement clinker is characterized in that the silica modulus of the cement clinker is no more than 2.1, the aluminum-oxygen modulus of the cement clinker is no less than 1.2 and less than 1.4, and a saturation ratio is 0.86 to 0.96. The invention also discloses a preparation method for the cement clinker. The cement clinker enables coal consumption in preparation of the clinker to be effectively reduced and has performance equivalent to performance of conventional cement clinker.

Description

technical field [0001] The invention relates to cement clinker prepared by a new dry method, in particular to a new dry method cement clinker with energy saving and consumption reduction, and also relates to a preparation method of the new dry method cement clinker with energy saving and consumption reduction. Background technique [0002] Cement clinker is a semi-finished product obtained by first using limestone, clay and iron raw materials as the main raw materials, preparing them in an appropriate proportion and grinding them into raw materials, and then burning them until they are partially or completely melted and cooled. The formation process of cement clinker is as follows: [0003] 1. Evaporation of water: [0004] Free moisture gradually evaporates as the temperature of the raw meal rises. When the temperature rises to 100-150°C, all the free moisture in the raw meal is eliminated. [0005] 2. Dehydration of clayey raw materials: [0006] When the temperature of...

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Problems solved by technology

But its disadvantage is that the clinker formula has a high silicic acid rate, which will lead to the flux mineral C in the liquid phase 3 A and C 4 AF content is low, that is, the generated C 3 A and C 4 With less AF, the heat release will also decrease, the material temperature will rise slowly, and the liquid phase amount in the solid phase reaction is low, the reaction speed is low, and the required firing temperature is high; the aluminum oxygen rate is high, and the C in the flux mineral 3 A is high, while C 3 The high viscosity of A will increase the viscosity of the liquid phase, resulting in a decrease in the speed of the solid phase reaction, a high firing temperature (about 1450°C), and a long firing time, resulting in the consumption of the current new dry cement clinker preparation. The amount of coal is large, and it usually takes 110-120 kg of standard coal to burn 1 ton of clinker

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