Building polymer powder based on composite silicate

Abstract

The invention relates to building polymer powder based on composite silicate, comprising the components in percentage by weight: 35-45wt% of fly ash, 20-30wt% of granulated blast-furnace slag micro powder, 25-35wt% of Portland cement or common Portland cement, 3-5wt% of limestone powder and/or calcium hydroxide and 4-5wt% of sulfate or gypsum powder. The specific surface area of the thinness of the components ranges from 280 to 340; and the specific surface area of the building polymer powder based on the composite silicate ranges from 470 to 500. The production process can be an intermittent grinding system generating process or a continuous grinding system generating process. The polymer powder has favorable stability, operation, mechanical properties, durability, no corrosion or radiation, low use price which is 45-50% lower that that of cement, small specific gravity, and great size which is approximately 15% larger than that of common Portland cement when weights are same.

Description

Technical field: [0001] The invention relates to a composite silicate-based building polymer powder, which belongs to the field of building materials. technical background: [0002] At present, the poor structure of the cement industry has brought many negative effects, such as high energy consumption, large carbon dioxide emissions, serious environmental pollution, a large amount of waste of geological resources, and low productivity. Random mining has caused great damage to mines, land resources and vegetation. The phenomenon of destruction and soil removal is more serious, and the pollution of waste gas and dust from cement enterprises is the most serious. Most cement plants have become major polluters today, seriously affecting the urban and rural environment and agricultural production. Cement dust pollution sources include limestone mining and crushing, transportation, storage, packaging, drying, raw material grinding, clinker calcination process and cooling process, coal ...

AI Technical Summary

Problems solved by technology

[0011] The above two foreign technologies have factors such as complex production process in terms of equipment investment, material selection, process flow, etc.

[0012] In addition, the specific surface area of ​​the current cement products is generally 340-360. The reason is that in the process of grinding cement materials during the production of cement, for some difficult-to-grind cement admixtures, when the specific surface area is 340-360 360, that is, when it is about to develop its potential edge with high hydraulic activity characteristics, that is, the grinding fineness of the finished cement product, if the grinding continues, the equipment will reach a certain grinding limit, at this time The high temperature of the mill is gradually formed, the ball milling medium will generate static electricity and cause ball paste phenomenon, the power consumption will double, and the work efficiency will be low. At this time, the specific surface area of ​​the finely ground slag powder used as cement admixture is about 340-360, 3 The daily activity coefficient is about 20-30%. Only when the specific surface area of ​​the ground slag powder reaches 400, the three-day activity coefficient can reach 60%. When the specific surface area is 600-800, the activity coefficient in 3 days is 99%, which is equivalent to that of ordinary fineness cement clinker

It can be seen that this product has great hydraulic activity characteristics and mining potential, but it is impossible to grind it together with cement under normal conditions, because in normal cement production, the production of grinding equipment exists The disadvantages of the capacity limit, and the product that can only be used as a cement admixture in the past, has the characteristic potential of hydraulic activity. In the normal grinding production, its hydraulic activity has not been really developed, but has become This is also when the existing cement enterprises produce cement, a considerable amount of cement clinker is required to provide enough energy for the generated matter to play the role of cementing sand and gravel or other building materials, while cement clinker It is the most important constituent substance in today's cement production. It is the most costly and energy-intensive material in cement production. It is also one of the hard-to-grind substances. The specific surface area of ​​the finished product is still difficult to reach more than 400

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