Powder modified excitant for finely grinding fly ash and preparation method thereof

A powder modification and activator technology, applied in cement production and other directions, can solve the problems of low activity of fly ash, limitation of mass use of fly ash, and low early strength.

Pending Publication Date: 2021-04-20
内蒙古宏尔高新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Raw fly ash has low activity and low early stren

Method used

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  • Powder modified excitant for finely grinding fly ash and preparation method thereof
  • Powder modified excitant for finely grinding fly ash and preparation method thereof
  • Powder modified excitant for finely grinding fly ash and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A powder modified activator for pulverizing fly ash, comprising the following raw materials in mass percentage: 7.2% of modifier, 25% of sacrificial agent, 10% of reinforcing activator, and 57.8% of anhydrite carrier. Among them, the modifier contains 2% lignosulfonate, 5% phosphate 1#, and 0.2% phosphate 2#; Anhydrite.

[0030] Wherein, the lignosulfonate is calcium lignosulfonate with a molecular weight of 1000-8000 and containing 20% ​​of reducing sugar. Phosphate 1# is sodium hexametaphosphate, industrial grade, P 2 o 5 70%. Phosphate 2# is sodium tripolyphosphate, industrial grade, content 98%. Yuanmingfen is industrial grade, content ≥ 99.2%. Sodium thiosulfate is industrial grade, containing 5 crystal waters, and the content is 96%. Anhydrite 0.045mm sieve residue is 30%, SO 3 The content is 52%, and the crystal water is 3%, which is natural anhydrite.

[0031] The preparation method of the above-mentioned powder modified activator for grinding fine fly a...

Embodiment 2

[0035] A powder modified activator for pulverizing fly ash, comprising the following raw materials in mass percentage: 8.3% of modifier, 20% of sacrificial agent, 15% of reinforcing activator, and 56.7% of anhydrite carrier. Among them, the modifier contains 1% of lignosulfonate, 7% of phosphate 1#, and 0.3% of phosphate 2#; Anhydrite.

[0036] Wherein, the lignosulfonate is calcium lignosulfonate with a molecular weight of 1000-5000 and containing 25% of reducing sugar. Phosphate 1# is sodium hexametaphosphate, industrial grade, P 2 o 5 75%. Phosphate 2# is sodium tripolyphosphate, industrial grade, with a content of 97%. Yuanmingfen is industrial grade, content ≥ 99.5%. Sodium thiosulfate is industrial grade, containing 5 crystal waters, the content is 97%. Anhydrite 0.045mm sieve residue is 20%, SO 3 The content is 50%, and the crystal water is 2%, which is natural anhydrite.

[0037] The preparation method of the above-mentioned powder modified activator for grindi...

Embodiment 3

[0041] A powder modified activator for pulverizing fly ash, comprising the following raw materials in mass percentage: 15.5% of modifier, 30% of sacrificial agent, 20% of reinforcing activator, and 34.5% of anhydrite carrier. Among them, the modifier contains 5% lignosulfonate, 10% phosphate 1#, and 0.5% phosphate 2#; Anhydrite.

[0042] Wherein, the lignosulfonate is calcium lignosulfonate with a molecular weight of 1000-10000 and containing 30% of reducing sugar. Phosphate 1# is sodium hexametaphosphate, industrial grade, P 2 o 5 was 78%. Phosphate 2# is sodium tripolyphosphate, industrial grade, content 99%. Yuanmingfen is industrial grade, content ≥ 99.5%. Sodium thiosulfate is industrial grade, containing 5 crystal waters, and the content is 98%. Anhydrite 0.045mm sieve residue is 40%, SO 3 The content is 54%, and the crystal water is 4%, which is natural anhydrite.

[0043]The preparation method of the above-mentioned powder modified activator for grinding fine f...

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Abstract

The invention belongs to the field of excitants and preparation thereof, and discloses a powder modified excitant for finely grinding fly ash and a preparation method of the powder modified excitant, the powder modified excitant comprises the following preparation raw materials: a modifier, a sacrificial agent, a reinforced excitant and anhydrite, wherein the modifier comprises lignosulfonate, sodium hexametaphosphate and sodium tripolyphosphate; the powder modified excitant can give full play to the potential of the pozzolanic effect of the pulverized coal ash, so that the strength and comprehensive performance of the prepared pulverized coal ash are greatly improved, the water demand of the pulverized coal ash is reduced, the filling effect of the pulverized coal ash is enhanced, and the application range and field of the pulverized coal ash are expanded; the machine-hour yield of production and preparation of the levigated fly ash is increased, and the power consumption of preparation and production of the levigated fly ash is reduced; the preparation method is simple and easy to operate and implement.

Description

technical field [0001] The invention relates to the field of activators and their preparation, in particular to a powder-modified activator for pulverizing fly ash and a preparation method thereof. Background technique [0002] To eliminate industrial waste residues, realize the resource utilization of industrial waste residues, realize green development, excavate and develop its application value by grinding fly ash, and improve the technical level of fly ash application. Grinding fly ash is to grind fly ash to a certain fineness standard according to a certain fineness requirement, and it is used as an important inorganic non-metallic raw material for cement, high-performance and ultra-high-performance concrete and other special projects. Finely ground fly ash can give full play to the potential of the pozzolanic effect of fly ash, improve the strength of concrete, enhance the micro-aggregate filling effect of fly ash, improve the workability of concrete, save costs, and a...

Claims

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Application Information

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IPC IPC(8): C04B24/18C04B12/00C04B7/26
CPCY02P40/10
Inventor 刘炜峰赵云鹏
Owner 内蒙古宏尔高新材料科技有限公司
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