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A kind of steel slag activator and its preparation method and application

A technology of activator and steel slag, which is applied in the direction of cement production, etc., can solve the problems of restricting the utilization of steel slag as building materials, high content of free calcium oxide, and poor activity of steel slag powder, etc., so as to increase energy consumption and environmental burden, simple production process control, The effect of reducing the power consumption of grinding

Active Publication Date: 2019-04-23
江苏润天建材(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] On the other hand, due to the problem of poor working performance in the application of steel slag grinding, the long-term activity improvement, stimulation and stabilization of steel slag micropowder have also become the key to the application of steel slag grinding; the comprehensive utilization of steel slag basically revolves around In the direction of steel slag utilization as building materials, it is mainly used for grinding and as roadbed filling material. However, on the one hand, steel slag is difficult to grind, and on the other hand, the activity of steel slag powder is poor, the content of free calcium oxide is high, and the volume stability is poor, which greatly limits the use of steel slag. utilization of building materials
Based on the above reasons, the steel slag grinding lines that have been built in China are basically shut down and idle.

Method used

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  • A kind of steel slag activator and its preparation method and application
  • A kind of steel slag activator and its preparation method and application
  • A kind of steel slag activator and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1: a kind of steel slag activator comprises following components:

[0032]

[0033] In parts by weight.

[0034] The preparation method of above-mentioned steel slag activator comprises the steps:

[0035] (1) Put the mixed alcohol amine, organic acid and mixed polyol into the reaction kettle in proportion, control the temperature at 35-40°C, and react for 2 hours under stirring condition;

[0036] (2) Add graphene oxide slurry to the system in step (1), simultaneously raise the temperature to 120°C, adjust the pressure to 0.2Mpa, and react for 4h under stirring conditions;

[0037] (3) Add water in proportion to the system in step (2), and stir for 15 minutes to obtain a steel slag activator.

[0038] The preparation method of the steel slag micropowder activation material containing above-mentioned steel slag activator comprises the steps:

[0039] (1) Add 4w% water to the existing steel slag, then grind, and add dropwise the described steel slag acti...

Embodiment 2

[0046] Embodiment 2: a kind of steel slag activator comprises following components:

[0047]

[0048]

[0049] In parts by weight.

[0050] The preparation method of above-mentioned steel slag activator comprises the steps:

[0051](1) Put the mixed alcohol amines, organic acids and mixed polyols into the reaction kettle in proportion, control the temperature at 30-35°C, and react for 4 hours under stirring conditions;

[0052] (2) Add graphene oxide slurry to the system in step (1), simultaneously raise the temperature to 100°C, adjust the pressure to 0.25Mpa, and react for 3h under stirring conditions;

[0053] (3) Add water in proportion to the system in step (2), and stir for 10 minutes to obtain a steel slag activator.

[0054] The preparation method of the steel slag micropowder activation material containing above-mentioned steel slag activator comprises the steps:

[0055] (1) Add 3w% water to the existing steel slag, then grind, and add 0.015wt% of the steel ...

Embodiment 3

[0057] Embodiment 3: a kind of steel slag activator, comprises following component:

[0058]

[0059] In parts by weight.

[0060] The preparation method of above-mentioned steel slag activator comprises the steps:

[0061] (1) Put the mixed alcohol amines, organic acids and mixed polyols into the reaction kettle in proportion, control the temperature at 45-50°C, and react for 3 hours under stirring conditions;

[0062] (2) Add graphene oxide slurry to the system in step (1), simultaneously raise the temperature to 150°C, adjust the pressure to 0.4Mpa, and react for 6h under stirring conditions;

[0063] (3) Add water in proportion to the system in step (2), and stir for 30 minutes to obtain a steel slag activator.

[0064] The preparation method of the steel slag micropowder activation material containing above-mentioned steel slag activator comprises the steps:

[0065] (1) Add 5w% water to the existing steel slag, then grind, and add dropwise the described steel slag ...

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Abstract

The invention discloses a steel slag activating agent, and belongs to the technical field of industrial additives. The steel slag activating agent is prepared from graphene oxide paste, mixed alcohol amine, organic acid, mixed polyhydric alcohols and water. The steel slag activating agent is applied to steel slag powder grinding, the activating effect is better, the crystals of a steel slag hydration product are induced to orderly grow, the activating property of the steel slag micropowder is improved, and the problem of activating of steel slag micropowder is solved. The steel slag micropowder can be widely applied to cement and concrete industries, the problem of pollution to environments by steel slag is solved, the demand of cement and concrete enterprises on high-quality raw material is relieved, and the market prospect is better. The activating agent has the advantages that the energy consumption in the production phase is little, and the waste gas, waste liquid and waste slag are not produced; the control of production technology is simple, and the rate of finished products is high; compared with the existing production technology, the energy consumption and environment burden are not increased in the powder grinding phase, and the electric consumption of powder grinding is decreased.

Description

technical field [0001] The invention belongs to the technical field of industrial additives, and in particular relates to a steel slag activator with high activation performance and its preparation method and application. Background technique [0002] The amount of steel slag discharged in the steelmaking process is 15%-20%. my country produces nearly 100 million tons of various steel slags every year along with steel production, and its mineral composition is represented by C 3 MS 2 Magnesia rhodoxene, and its solid solution with dicalcium silicate C 2 S-C 3 MS 2 Composition, with potential hydration activity. The amount of resources is huge, but the amount of comprehensive utilization is not large at present, resulting in waste of resources and environmental pollution. [0003] The comprehensive utilization of steel slag basically focuses on the utilization of steel slag as a building material. It is mainly used for grinding and as roadbed filling materials. However, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/147C04B7/153
CPCC04B7/147C04B7/153Y02P40/10
Inventor 周语平钱亚生周广勇
Owner 江苏润天建材(集团)有限公司
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