Preparation device and preparation method of limestone powder for concrete

Abstract

The invention relates to the technical field of building materials and in particular relates to a preparation device and a preparation method of limestone powder for concrete. By designing the device for preparing the limestone powder and treating through a preparation technology, a condition that the limestone powder is in contact with moisture in the air is effectively avoided and the performance of the limestone powder is improved; a condition that the limestone powder is diffused in the air is avoided and the environment pollution is reduced; the fineness and the moisture content are controlled in a preparation process of the limestone powder, so that the preparation difficulty of the limestone powder is reduced and the energy consumption is reduced; moreover, the hydration effect of milling of a Raymond mill is avoided and the performance of the limestone powder is stable, so that the performance is improved after the limestone powder is used as a concrete blending material.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a limestone powder preparation device for concrete and a preparation method thereof. Background technique [0002] As the defects of high-quality concrete admixtures such as fly ash and slag powder are increasingly exposed, concrete admixtures are increasingly in short supply, leading to research on concrete admixtures, which can replace fly ash, slag powder and other materials to achieve The improvement of concrete performance has become an urgent technical problem in the current construction industry. [0003] Limestone is often added in concrete as the aggregate material of concrete to improve the strength of concrete. However, after it is directly crushed into a certain fineness, it is used as an admixture of concrete. There are relatively few studies in the prior art, and After the limestone is ground into powder as a concrete admixture, the composition of the li...

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Problems solved by technology

[0003] Limestone is often added to concrete as the aggregate material of concrete to improve the strength of concrete. However, after it is directly crushed into a certain fineness, it is used as an admixture of concrete. There are relatively few studies in the prior art, and After limestone is ground into powder as a concrete admixture, the composition of the limestone sand and limestone fine powder used as the aggregate component will be the same as the admixture, which hinders the internal function of the concrete raw material components and makes the performance of the concrete It is difficult to guarantee, and, if the fineness of limestone powder is not properly controlled, it will greatly affect the freezing and thawing, flexural and compressive strength of concrete, making the quality of concrete poor

In addition, in the prior art, the equipment for the production and processing of limestone powder is not properly controlled, resulting in the exposure of limestone powder to the air during the production process, which not only causes environmental pollution, but also leads to poor performance of the prepared limestone powder , the fineness is difficult to control

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