About 97% of the energy consumed in the grinding process becomes heat energy and is wasted in vain.

Results and Discussion 3.1 Performance Research Test Results and Discussion 3.1.1 Grinding Effect Analysis The test results of fineness, specific surface area, and laser particle size of cement after grinding with four grinding aids are shown in Table 1.
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Introduction The cement industry is a high energy consumption industry, and the energy consumption of cement grinding accounts for a significant proportion in the entire production process, with electricity consumption accounting for about 60% – 70% of the comprehensive electricity consumption of cement.

At present, China’s cement grinding aids are mainly composed of alcohol amines such as triethanolamine and triisopropanolamine, which have significant effects, but also have some shortcomings, such as poor performance stability, sensitivity to changes in dosage, and high cost.

This article will initially explore the compatibility of cement grinding aids and concrete water reducing agents.

The proportion of cement materials (between 32.5 and 42.5 cement) is 70% clinker+20% fly ash+5% slag+5% gypsum.

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With the wide application of cement grinding aids in cement production, while grinding aids have made significant contributions to energy conservation and emission reduction, the issue of their adaptability to concrete admixtures is becoming increasingly prominent.

Only a small portion of the energy is used to increase the specific surface area of the material.

In this paper, four cement grinding aids, triethanolamine, diisopropylamine, modified triethanolamine, and composite grinding aids, were selected to study their impact on the grinding effect and performance of cement through experiments, focusing on the compatibility of them with concrete water reducing agents.

The grinding time is 25 minutes, and the grinding time is 5 minutes.

Raw Materials and Experimental Methods 2.1 Main Raw Materials (1) Cement Clinker: Portland Cement Clinker from Beijing Cement Plant (2) Gypsum: Natural Dihydrate Gypsum (CaSO4 • 2H2O) (3) Cement Mixture: Fly Ash (Beijing Jinneng Power Plant); Slag (Hebei Xuanhua Steel Slag) (4) Grinding aids: ① Triethanolamine (TEA): industrial products ② Triisopropanolamine (TIPA): industrial products ③ Modified Triethanolamine (Modified TEA): industrial products ④ Composite cement grinding aids: Industrial products with TEA, TIPA, and modified TEA as important components.

(7) Admixture: Fly Ash (Beijing Jinneng Power Plant) 2.2 Experimental Method (1) Performance Study: Four grinding aids are added to a small mill at different amounts for grinding.

(5) Water reducing agent: polycarboxylic acid high efficiency water reducing agent (50% concentration) (6) Aggregate: natural medium sand; Crushed stone (maximum particle size 30mm).

The utilization rate of its energy is extremely low.

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(2) Research on compatibility with concrete water reducing agents: Evaluate the compatibility of grinding aids with concrete water reducing agents by testing the fluidity of cement and water reducing agents after grinding with grinding aids, as well as testing them in concrete.

In order to reduce energy consumption, save energy, and improve grinding efficiency, adding a small amount of grinding aids to improve grinding efficiency is one of the effective methods.

The modified triethanolamine in this article is a water-soluble compound after chemical synthesis and modification of triethanolamine to address these shortcomings.

Short Waved Anchor

Then conduct routine tests on the ground cement from seven aspects: fineness, specific surface area, laser particle size distribution, mortar strength, water consumption for standard consistency, setting time, and soundness to understand its grinding effect and its impact on cement performance, and determine the optimal dosage of four grinding aids.

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