Mechanical Activation in the Technology of Calcium Sulfate-Based Binders

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Resumo

One of the areas of modern development in the construction industry is the expansion of the use of binders based on calcium sulfate. Improving the technical and operational properties of calcium sulfate-based materials is achieved by various technological methods. The most popular way to solve this problem is to modify binders by using chemical and mineral additives. Increasing the reactivity of the components of a binder system based on calcium sulfate is associated with the implementation of the mechanical activation process. During mechanical activation, not only does the particle size decrease, but their crystalline structure also changes due to an increase in the concentration of defects and the formation of active surface centers. To carry out mechanical activation, grinding devices with high energy intensity are required, for example, a centrifugal impact mill, in which a high energy intensity of the grinding process is achieved (more than 10 kW/kg). The paper considers the application areas of mechanical activation in the production of binders based on calcium sulfate for various purposes: building gypsum, low-water-demand gypsum binder, composite gypsum and anhydrite binders. The paper presents the results of using mechanical activation in the production of binder systems, showing an increase in the strength of artificial stone and an improvement in operational characteristics.

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Sobre autores

M. Garkavi

Ural-Omega CJSC

Autor responsável pela correspondência
Email: mgarkavi@mail.ru

Doctor of Sciences (Engineering)

Rússia, Bldg. 7, 89, Lenin Ave., Magnitogorsk, 455037

A. Artamonov

Ural-Omega CJSC

Email: aav@uralomega.ru

Candidate of Sciences (Engineering)

Rússia, Bldg. 7, 89, Lenin Ave., Magnitogorsk, 455037

E. Kolodezhnaya

Institute for Integrated Development of Mineral Resources of the Russian Academy of Sciences

Email: kev@uralomega.ru

Candidate of Sciences (Engineering)

Rússia, 4, Kryukovsky Tupik, Moscow, 111020

M. Kozin

Ural-Omega CJSC

Email: kma@uralomega.ru

Engineer

Rússia, Bldg. 7, 89, Lenin Ave., Magnitogorsk, 455037

D. Khamidulina

Magnitogorsk State Technical University

Email: loza_mgn@mail.ru

Candidate of Sciences (Engineering)

Rússia, 38, Lenin Ave., Magnitogorsk, 455000

S. Nekrasova

Magnitogorsk State Technical University

Email: snek-mgn@ail.ru

Candidate of Sciences (Engineering)

Rússia, 38, Lenin Ave., Magnitogorsk, 455000

Bibliografia

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