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A kind of preparation method of inorganic salt early-strength agent for removing chlorine nano-alkali slag by wet grinding

A technology of early strength agent and inorganic salt, which is applied in the field of preparation of inorganic salt early strength agent for chlorine removal by wet milling, can solve the problems of large water consumption and low efficiency, and achieve small water consumption, simple process and good dispersion effect good effect

Active Publication Date: 2022-04-01
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method also has the problems of large water consumption and low efficiency.

Method used

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  • A kind of preparation method of inorganic salt early-strength agent for removing chlorine nano-alkali slag by wet grinding
  • A kind of preparation method of inorganic salt early-strength agent for removing chlorine nano-alkali slag by wet grinding
  • A kind of preparation method of inorganic salt early-strength agent for removing chlorine nano-alkali slag by wet grinding

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Experimental program
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Embodiment 1

[0048] The specific steps of this embodiment are as follows:

[0049] (1) 30 parts by weight of alkali slag with a solid content of 90% is mixed with 64.5 parts by weight of water, and a suspension with a particle diameter of less than 1mm is obtained after sieving, and the solid content of the suspension is 30%.

[0050] (2) Mix the suspension, 0.135 parts by weight of ionic solubilizer and 400 parts by weight of agate balls, place them in a wet mill and grind them at a speed of 300rps to 400rps for 8min, and then sieve to obtain the chlor-alkali removal with a median particle size of 5 μm Slag slurry; wherein, the ionic solubilizer is composed of triethanolamine and propylene glycol mixed in a weight ratio of 2:1; agate balls are composed of 200 parts by weight of agate balls with a diameter of 2mm to 3mm, and 100 parts by weight of agate balls with a diameter of 3mm to 5mm Agate medium balls and 100 parts by weight of large agate balls with a ball diameter of 5 mm to 7 mm. ...

Embodiment 2

[0056] The specific steps of this embodiment are as follows:

[0057] (1) 30 parts by weight of alkali slag with a solid content of 70% is mixed with 64.5 parts by weight of water, and a suspension with a particle size of less than 1mm is obtained after sieving, and the solid content of the suspension is 40%.

[0058] (2) Mix the suspension, 0.105 parts by weight of ionic solubilizer and 400 parts by weight of agate balls, place in a wet grinder and grind for 9 minutes at a speed of 300rps to 400rps, and then sieve to obtain the chlor-alkali removal with a median particle size of 5 μm Slag slurry; wherein, the ionic solubilizer is composed of triethanolamine and propylene glycol mixed in a weight ratio of 1.5:1; agate balls are composed of 200 parts by weight of agate balls with a diameter of 2mm to 3mm, and 100 parts by weight of agate balls with a diameter of 3mm to 5mm Agate medium balls and 100 parts by weight of large agate balls with a ball diameter of 5 mm to 7 mm.

[...

Embodiment 3

[0064] The specific steps of this embodiment are as follows:

[0065] (1) Get 30 parts by weight of alkali slag with a solid content of 50% and mix it with 64.5 parts by weight of water, and sieve to obtain a suspension with a particle size of less than 1 mm, and the solid content of the suspension is 30%.

[0066] (2) Mix the suspension, 0.075 parts by weight of ionic solubilizer and 400 parts by weight of agate balls, place in a wet grinder and grind for 10 minutes at a speed of 300rps to 400rps, and then sieve to obtain the chlor-alkali removal with a median particle size of 5 μm Slag slurry; wherein, the ionic solubilizer is composed of triethanolamine and propylene glycol mixed in a weight ratio of 1:1; agate balls are composed of 200 parts by weight of agate balls with a diameter of 2 mm to 3 mm, and 100 parts by weight of agate balls with a diameter of 3 mm to 5 mm. Agate medium balls and 100 parts by weight of large agate balls with a ball diameter of 5 mm to 7 mm.

...

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Abstract

The invention discloses a preparation method of an inorganic salt early-strength agent for wet grinding chlorine removal nano-alkali slag, comprising: (1) mixing 30 parts by weight of alkali slag with 7.5-70 parts by weight of water, and sieving to obtain a particle size of less than 1 mm 1. A suspension with a solid content of 30% to 40%; (2) mixing the suspension, an ion solubilizer and a grinding medium, and grinding in a wet mill to obtain a slurry with a median particle size of 2 μm to 5 μm; (3) solid-liquid separation is carried out to the slurry obtained in step (2), and the supernatant liquid is taken away to obtain the dechlorination alkali slag slurry; (4) adding water makes the solid content of the dechlorination alkali slag slurry reach 20%~25%, and then Mix with dispersant, polyacrylate plasticizer, and grinding media, and grind in a wet mill to obtain nano-alkali slag with a median particle size of less than 100nm. The method of the invention has the advantages of simple process, low water consumption and high chlorine removal efficiency, and the prepared nano alkali slag early strength agent has good dispersion effect.

Description

technical field [0001] The invention belongs to the technical field of building material admixtures, in particular to a preparation method of an inorganic salt early strength agent for removing chlorine nano-alkali slag by wet grinding. Background technique [0002] Nanomaterials have extremely small size, large specific surface area and high surface energy, and their particle size is between 1nm and 100nm. Nanomaterials (such as nano-SiO 2 , CaCO 3 etc.) added to cement-based cementitious materials, because of its excellent filling effect, surface effect and crystal nucleus effect, it can fill the gaps between cement particles and reduce the porosity of cement paste, thereby improving the degree of compaction. Nanomaterials can also provide crystal nuclei for cement hydration products and promote cement hydration. Nanomaterials are widely used in cement-based cementitious materials, and are also a major trend in the development of building materials in the future. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/26C04B28/04
CPCC04B40/0039C04B28/04C04B2201/50C04B18/0427C04B24/122C04B24/2641C04B24/26C04B24/18
Inventor 杨进曾景义付泽康贺行洋苏英郑正旗张芸宁王福龙谭洪波黄中辉
Owner HUBEI UNIV OF TECH
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