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Dispersant for wet grinding of waste slurry in mixing station

A technology of mixing station and dispersing agent, which is applied in the field of dispersing agent for wet grinding of waste slurry in mixing station, can solve the problems of difficulty in adapting to particle size range, lack of steric hindrance effect, unstable slurry, etc., so as to improve grinding efficiency and stability. performance, cost reduction, and increased dispersion

Active Publication Date: 2022-03-25
CHINA STATE CONSTR READY MIXED CONCRETE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wet grinding dispersant reported at present is mainly a dispersant for a single grinding material. Common polymer dispersants such as patent CN107602774A disclose a dispersant for wet fly ash, and patent CN107649068A discloses a dispersant for wet grinding. Low-molecular-weight cationic polymer dispersants, such molecular structure size is difficult to adapt to the waste slurry with a large particle size range and complex composition, and at the same time, it will promote the flocculation and agglomeration of small particles to increase the viscosity; common inorganic dispersants lack sufficient space The resistance effect makes the slurry after grinding unstable and easy to settle

Method used

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  • Dispersant for wet grinding of waste slurry in mixing station
  • Dispersant for wet grinding of waste slurry in mixing station
  • Dispersant for wet grinding of waste slurry in mixing station

Examples

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Embodiment 1

[0027] A dispersant for wet grinding of waste slurry in a mixing station, its raw material components are: micelle stabilizing component A 10%, dispersing component B 1%, grinding aid component C 5%, grinding aid component D (triethanolamine B salt) 5%, water 79% (comprising the water introduced by the following self-made polymer aqueous solution);

[0028] Wherein, the molecular weight of the micelle stabilizing component A is 16000, wherein the molar ratio of polylactic acid, polyethylene glycol, and methoxypolyethylene glycol is 1:2:20; the specific preparation of the micelle stabilizing component A The steps include: heating polylactic acid, polyethylene glycol and a catalyst (stannous octoate, the dosage is 0.5% of the mass of polylactic acid) to 140°C, reacting for 2 hours, adding methoxypolyethylene glycol and continuing the reaction for 4 hours to obtain a dispersed component A;

[0029] Dispersion component B is a self-made polymer aqueous solution, and its raw mater...

Embodiment 2

[0034] A dispersant for wet grinding waste slurry in a mixing station, its raw material components are: 20% of micelle stabilizing component A, 5% of dispersing component B, 10% of grinding aid component C, grinding aid component D (oleic acid three Ethanolamine) 10%, water 55% (comprising the water introduced by the following self-made polymer aqueous solution);

[0035] Wherein, the molecular weight of the micelle stabilizing component A is 24000, wherein the molar ratio of polylactic acid, polyethylene glycol, and methoxypolyethylene glycol is 1:2:40; the specific preparation of the micelle stabilizing component A The steps include: heating polylactic acid, polyethylene glycol and catalyst (stannous octoate, the dosage is 0.8% of the mass of polylactic acid) to 150°C, adding methoxypolyethylene glycol after reacting for 2 hours to continue the reaction for 4 hours to obtain a dispersed component A;

[0036] Dispersion component B is a self-made polymer aqueous solution, an...

Embodiment 3

[0042] A dispersant for wet grinding of waste slurry in a mixing station, the raw material components of which are: micelle stabilizing component A 15%, dispersing component B 3%, grinding aid component C 7%, grinding aid component D 8%, water 67% (including the water introduced below from the homemade aqueous polymer solution).

[0043] Wherein, the molecular weight of the micelle stabilizing component A is 23000, wherein the molar ratio of polylactic acid, polyethylene glycol, and methoxypolyethylene glycol is 1:5:50; the specific preparation of the micelle stabilizing component A The steps include: heating polylactic acid, polyethylene glycol and catalyst (stannous octoate, the dosage is 0.5% of the mass of polylactic acid) to 150°C, adding methoxypolyethylene glycol after reacting for 2 hours to continue the reaction for 4 hours to obtain a dispersed component A;

[0044] Dispersion component B is a self-made polymer aqueous solution, and its raw material components are: ...

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Abstract

The invention discloses a dispersant for wet grinding of waste slurry in a mixing station. The components and their mass percentages include: micelle stabilizing component A 10-20%, dispersing component B 1-5%, grinding aid group Component C 5-10%, grinding aid component D 5-10%, water 55-79%. The dispersant for wet grinding of waste slurry in the mixing station of the present invention adopts a multi-component formula system for waste slurry, which can prevent settlement and improve the stability of slurry after wet grinding while improving the wet grinding efficiency of waste slurry, and realize concrete mixing The high-efficiency resource utilization of station waste pulp has important economic and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a dispersant for wet grinding of waste slurry in a mixing station. Background technique [0002] At present, the waste slurry of concrete mixing plants includes: a large amount of waste slurry discharged from car washing, a large amount of waste slurry produced after sand and stone separation of unqualified concrete, and various waste slurry produced during the production process. The above waste slurry has certain activity and can be added to concrete as a raw material. However, due to the uneven particle size distribution and large particle size range in waste slurry, if it is directly added to concrete, it will cause large fluctuations in concrete strength. Under the current situation of environmental protection requirements, it is impossible to discharge these waste pulp and slag directly. The current treatment methods include giving the waste slag var...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B20/02C08G81/00C08F283/06C08F220/06C08F220/34C08F220/04C08F222/38C04B18/16
CPCC04B20/026C08G81/00C08F283/065C04B18/16C08F220/06C08F222/38Y02W30/91
Inventor 李兴王军赵日煦熊龙
Owner CHINA STATE CONSTR READY MIXED CONCRETE CO LTD