Wet-ground carbide-slag-containing activator and application

A calcium carbide slag and activator technology, applied in cement production and other directions, can solve the problems of difficulty in popularization and application and high activator cost, and achieve the effects of reducing energy consumption for preparation, improving resource utilization, and improving wet grinding efficiency.

Active Publication Date: 2019-10-08
WUHAN UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention aims to propose a wet grinding calcium carbide slag activator to solve th

Method used

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  • Wet-ground carbide-slag-containing activator and application
  • Wet-ground carbide-slag-containing activator and application
  • Wet-ground carbide-slag-containing activator and application

Examples

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Example Embodiment

[0021] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0022] The present invention will be described in detail below in conjunction with examples.

[0023] Table 1 shows the ratio of each component in the wet-grinding carbide slag activator of Examples 1 to 6 of the present invention and the fineness of the wet-grinding carbide slag activator of each example. Among them, Examples 1 to 6 of the present invention The calcium carbide slag in 6 is the waste residue with calcium hydroxide as the main component after the calcium hydroxide is hydrolyzed to obtain acetylene gas, and its calcium hydroxide content is 95%. It should be noted that the calcium hydroxide content of the calcium carbide slag in the present invention is not limited to 95%. %, as long as it is greater than 90%. Table 2 is the composition of surface modifier and stabilizer in the embodiment 1~em...

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Abstract

The invention provides a wet-ground carbide-slag-containing activator and application. The wet-ground carbide-slag-containing activator is mainly prepared by subjecting 60-65 parts of carbide slag, 9-9.8 parts of surfactant, 6-6.5 parts of stabilizer and 10-30 parts of water to a wet grinding process. The wet-ground carbide-slag-containing activator has the advantages that the activator uses the carbide slag whose main components are calcium hydroxide and calcium carbonate as the main raw material, the wet grinding process is used to improve the fineness of the carbide slag and increase the specific surface area of the carbide slag so as to increase the dissolution rate and dissolution quantity of the calcium hydroxide and calcium carbonate in the carbide slag, high alkalinity is providedfor the pozzolanic reaction of slag glass, and accordingly slag pozzolanic reaction efficiency is increased, and a slag-based cementitious material is allowed to be high in compressive strength; whenthe mixing amount of the wet-ground carbide-slag-containing activator is 10-15%, the slag-based cementitious material can meet the national standard of 32.5 strength level of ordinary Portland cement.

Description

technical field [0001] The invention relates to the technical field of activators, in particular to a wet grinding carbide slag activator and its preparation method and application. Background technique [0002] Granulated blast furnace slag (referred to as slag) is an irregular glass body obtained by water quenching and quenching in the process of smelting pig iron. Its main component is aluminosilicate, which has potential activity. At present, China produces hundreds of millions of tons of slag every year, of which only 20% to 30% are used as concrete mineral admixtures, and the rest are treated as solid waste. The finely ground blast furnace slag powder is used as the main raw material, excited by an alkaline activator, and stirred to produce an alkali-activated slag cementitious material. The slag cementitious material can make full use of industrial waste residue, and saves the cumbersome process of "two grinding and one burning" required for the preparation of cement...

Claims

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Application Information

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IPC IPC(8): C04B7/153
CPCC04B7/153Y02P40/10
Inventor 谭洪波聂康峻李懋高邓秀峰张迅苏英贺行洋
Owner WUHAN UNIV OF TECH
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