The article presents the experience of automating the process of secondary sludge preparation in autoclave aerated concrete technology. It is proposed to use a non-cut non-isotope density meter of domestic production as a recording sensor. The algorithm of the system operation and the scheme of the technological process fragment are presented.

Keywords: automation, control system, production process, autoclave aerated concrete, secondary sludge, algorithm, density meter, quality of the finished product, sludge pool, density

In the production of construction lime, only a small part of the extracted raw material is suitable for the production of a quality product, while most of the production volume passes into the category of substandard raw materials. The authors of this article developed a project for the processing of carbonate-containing raw materials to produce lime for construction purposes. It is shown that despite the high level of risks and significant financial investments necessary for the organization of new production, the economic efficiency of such a project is obvious, since the costs of eliminating potential environmental disasters greatly exceed the costs of construction of the processing complex.

Keywords: construction lime, sedimentary rock, carbonate-containing raw materials, dump, aerated concrete autoclave hardening, energy efficiency, risk, environmental disaster

Increasingly the non-autoclaved aerated concrete quality is created at of mortar mix expansion and the stage of plastic strength set. Consequently, the structure formation process can be deliberately controlled. The control actions choice is a complex scientific and technical challenge. It is solved in different ways in modern practice. The authors propose an integrated approach for selection of control actions in this article. In the first stage it is proposed to use expert methods, for example, the method of a priori ranking factors. It is rational to apply experimental study in the second stage. The article presents the choice of the control parameters vector in controlling the non-autoclaved aerated concrete structure formation as an example.

Keywords: non-autoclaved aerated concrete, production technological process, control, factor, quality, expert method, method of a priori ranking factors, experiment, integrated approach