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Steel slag activating agent and preparation method and application thereof

An activator and steel slag technology, applied in cement production and other directions, can solve the problems of restricting the utilization of steel slag as building materials, high content of free calcium oxide, poor volume stability, etc., to increase energy consumption and environmental burden, simple production process control, and finished products. high rate effect

Active Publication Date: 2017-05-31
江苏润天建材(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Steel slag activating agent and preparation method and application thereof
  • Steel slag activating agent and preparation method and application thereof
  • Steel slag activating agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: A steel slag activator, including the following components:

[0030]

[0031] The preparation method of the above-mentioned steel slag activator includes the following steps:

[0032] (1) Put the mixed alcohol amine, organic acid and mixed polyol into the reaction kettle in proportion, control the temperature at 35-40℃, and react for 2h under stirring conditions;

[0033] (2) Add graphene oxide slurry to the system in step (1), while raising the temperature to 120°C, adjusting the pressure to 0.2Mpa, and reacting for 4 hours under stirring;

[0034] (3) Add water in proportion to the system of step (2), and stir for 15 minutes to obtain a steel slag activator.

[0035] The preparation method of the steel slag powder activated material containing the above-mentioned steel slag activator includes the following steps:

[0036] (1) Add 4w% water to the existing steel slag, and then grind, and add 0.02wt% of the steel slag activator dropwise during the grinding process; t...

Embodiment 2

[0043] Embodiment 2: A steel slag activator, including the following components:

[0044]

[0045]

[0046] The preparation method of the above-mentioned steel slag activator includes the following steps:

[0047] (1) Put the mixed alcohol amine, organic acid and mixed polyol into the reaction kettle in proportion, control the temperature at 30~35℃, and react for 4h under stirring conditions;

[0048] (2) Add graphene oxide slurry to the system of step (1), while raising the temperature to 100°C, adjusting the pressure to 0.25Mpa, and reacting for 3 hours under stirring;

[0049] (3) Add water in proportion to the system in step (2), and stir for 10 minutes to obtain a steel slag activator.

[0050] The preparation method of the steel slag powder activated material containing the above-mentioned steel slag activator includes the following steps:

[0051] (1) Add 3w% of water to the existing steel slag, then grind, and add 0.015wt% of the steel slag activator dropwise during the grinding ...

Embodiment 3

[0053] Embodiment 3: A steel slag activator, including the following components:

[0054]

[0055]

[0056] The preparation method of the above-mentioned steel slag activator includes the following steps:

[0057] (1) Put the mixed alcohol amine, organic acid and mixed polyol into the reaction kettle in proportion, control the temperature at 45~50℃, and react for 3h under stirring conditions;

[0058] (2) Add graphene oxide slurry to the system of step (1), while raising the temperature to 150°C, adjusting the pressure to 0.4Mpa, and reacting for 6 hours under stirring;

[0059] (3) Add water in proportion to the system in step (2), and stir for 30 minutes to obtain a steel slag activator.

[0060] The preparation method of the steel slag powder activated material containing the above-mentioned steel slag activator includes the following steps:

[0061] (1) Add 5w% water to the existing steel slag, and then grind, and add 0.03wt% of the steel slag activator dropwise during the grinding p...

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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 specifically 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 during the steelmaking process is 15%-20%. my country produces nearly 100 million tons of various types of steel slag every year with steel production, and its mineral composition is C 3 MS 2 Rhodonite and its solid solution C with dicalcium silicate 2 S-C 3 MS 2 Composition, with potential hydration activity. Its resources are huge, but the current comprehensive utilization is not large, resulting in resource waste and environmental pollution. [0003] The comprehensive utilization of steel slag basically revolves around the utilization of steel slag as building materials. It is mainly ground and used as roadbed filling material. However, on the one hand, steel slag is difficult to grind...

Claims

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Application Information

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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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