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Process Control System for Producing a Silica-Based Modifying Additive

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Metallurgist Aims and scope

In this study, the authors describe the development of an automated system for controlling the technological process of obtaining a modifying concrete additive comprising spherical silicon dioxide nanostructures. The paper describes the automation object, outlines system development aims, as well as presenting the main process-specific parameters to be measured, adjusted, signaled, and / or blocked. A list of automation equipment of the field, lower, and upper levels of the automated process control system (APCS) is provided. As well as input signal processing, the automatic polling of sensors and instruments is achieved by employing a distributed system based on Siemens equipment for the collection of data, which interact via Ethernet. The paper considers software requirements for the APCS operation and analyzes its reliability. The maximum safety level of the APCS is SIL 3; the average service life is stated to be 12 years. The developed automated control system for the technological process of obtaining the silica-based modifying additive permits the development of its structure, specifically an increase in the number of measurement points using a 10% input-output margin. In addition, software and data support of the APCS allows the system configuration to be modified, as well as enabling its expansion through an upgrade and the input of new tasks (sets of tasks and algorithms).

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Correspondence to V. A. Ershov.

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Translated from Metallurg, Vol. 65, No. 4, pp. 68–73, April, 2021. Russian DOI: 10.52351/00260827_2021_04_68.

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Ershov, V.A., Karlina, A.I. & Karlina, Y.I. Process Control System for Producing a Silica-Based Modifying Additive. Metallurgist 65, 446–453 (2021). https://doi.org/10.1007/s11015-021-01175-0

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