Portland cement clinker with high compressive strength and preparation method thereof

Abstract

The invention provides Portland cement clinker with high compressive strength, and the raw materials are prepared by limestone, coal oil residue, sandstone and steel slag. Among them, the ingredients and their weight ratio include: 80%~85% limestone, 2~4% coal oil residue, 7~12% sandstone, 2~6% steel slag ingredients. The invention adopts new type of industrial solid waste coal slag as a substitute for clay raw materials and participates in the raw material formula, which not only saves natural non-renewable resources, but also solves the pain points of waste production enterprises and the government; clinker three-day compressive strength The value can be increased to more than 37MPa; the unique raw meal homogenization technology no longer causes large fluctuations in the raw meal rate value entering the kiln due to the rotary kiln running and the kiln dust circulating and enriching in the homogenization storage when the raw meal mill is shut down, ensuring raw meal entering the kiln. The continuous uniformity of the material composition provides a reliable guarantee for the improvement of the clinker strength.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a Portland cement clinker with high compressive strength and a preparation method thereof. Background technique [0002] According to the requirements of GB / T21372-2008 "Universal Portland Cement Clinker", the three-day compressive strength of general Portland cement clinker can meet the requirements of the national standard. At present, the clinker strength of the domestic new dry process cement production line Most of them can reach between 26 and 33MPa. However, the current situation of the domestic cement industry is that the production capacity is seriously overcapacitated and the market competition is becoming increasingly fierce. All enterprises rely on their own product quality to continuously optimize and improve to strive for market share. [0003] Because clinker is the main source of cement strength and also the main component of cement compone...

AI Technical Summary

Problems solved by technology

When the raw meal mill is shut down, the kiln dust enrichment cycle in the raw meal homogenization storage causes large fluctuations in the raw meal rate value entering the kiln, which affects the easy-to-burn production of the raw meal entering the kiln

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