Powdered ore additive

A technology of additives and mineral powder, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of large fluctuations in the quality of mineral powder, small dosage, poor effect, etc., to stimulate the activity of mineral powder, stable product quality, The effect of increasing the activity index

Inactive Publication Date: 2013-03-13
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shortcomings of these grinding aids gradually emerged during the use process, such as various inorganic salts bring great safety hazards to the durability of cement and concrete; liquid grinding aids are expensive, the dosage is small, and the quality of mineral powder fluctuates greatly , the effect is not good; commonly used grinding aids have a single effect and rarely take into account both excellent grinding aid and good activity excitation effect; and it is even rarer to synthesize a polymer grinding aid material with good grinding aid effect

Method used

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  • Powdered ore additive

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Example 1: a powder mineral powder additive, the proportion of each component is as follows: (by weight)

[0024] Water-based polymer: 8

[0025] Furfural residue: 26

[0026] Gallic Acid: 1

[0027] Fly Ash: 65

[0028] The preparation process of this powder mineral powder additive is as follows:

[0029] Add fly ash into the mixer, then add furfural slag, gallic acid, and water-based polymer in sequence, and stir for 5 minutes to obtain the mineral powder additive.

example 2

[0030] Example 2: A kind of powder mineral powder additive, each component distribution ratio is as follows: (by weight)

[0031] Water-based polymer: 12

[0032] Furfural residue: 20

[0033] Gallic acid: 0.8

[0034] Fly Ash: 67.2

[0035] The preparation process of this powder mineral powder additive is as follows:

[0036] Add fly ash into the mixer, then add furfural slag, gallic acid, and water-based polymer in sequence, and stir for 5 minutes to obtain the mineral powder additive.

example 3

[0037] Example 3: A kind of powder mineral powder additive, each component distribution ratio is as follows: (by weight)

[0038] Water-based polymer: 20

[0039] Furfural residue: 10

[0040] Gallic acid: 1.5

[0041] Fly Ash: 78

[0042] The preparation process of this powder mineral powder additive is as follows:

[0043] Add fly ash into the mixer, then add furfural slag, gallic acid, and water-based polymer in sequence, and stir for 5 minutes to obtain the mineral powder additive.

[0044] The effect of powder mineral powder additives is shown in the table below:

[0045]

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PUM

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Abstract

The invention discloses a powdered ore additive. The powdered ore additive comprises the following components by weight: 5 to 20% of aqueous polymer, 10 to 40% of furfural residue, 0.5 to 1.5% of gallic acid, and 50 to 80% of coal ash. The aqueous polymer adopts vinyl acetate and maleic anhydride as the polymerizing monomers, water serves as the reaction medium, and the free radical polymerization is carried out, thus obtaining the powdered ore additive. The powdered ore additive is remarkable in grinding aid effect, about 20% of output of a grinding machine can be increased, the activity of the powdered ore can be effectively excited, and about 10% of 28-day activity index of the powdered ore can be increased.

Description

technical field [0001] The invention relates to an additive added when slag is ground, in particular to a powder additive for improving the output of a mill and stimulating the activity of slag. Background technique [0002] Mineral powder is the abbreviation of granulated blast furnace mineral powder, which is a by-product of the iron and steel industry. In order to turn waste into treasure and reduce environmental pollution, mineral powder has received more and more attention and has gradually become one of the important raw materials for concrete and cement. one. Concrete mixed with mineral powder has the characteristics of low heat of hydration, high late strength, good compactness, and good shrinkage resistance. It has been identified as one of the ten new technologies in the construction industry by the Ministry of Construction. However, the grindability of mineral powder is very poor, and the fine particles are easy to agglomerate. The grinding process needs to consu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14C08F290/06
Inventor 高建明张太龙谢雪
Owner SOUTHEAST UNIV
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