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The study suggests that the high concentration of mining and metallurgical enterprises on the territory of the Russian Ural region determines the need to consider industrial waste, including nickel slag, as a possible raw material for the production of ceramic bricks. The article describes the properties of clays and nickel slag obtained at metallurgical enterprises in the Orenburg region and the features of their use as components in the composition of ceramic bricks.

To achieve this purpose, such tasks as determining the technological parameters of production, conducting the X-ray phase and microstructural analysis of the obtained samples were solved.

Compositions of ceramic mass using clay from the Khalilovsky deposit (Orenburg region) with the addition of nickel slag (20 and 40% by weight) have been developed, and their physical and mechanical properties (compressive strength, bending strength, water absorption and density) have been determined. With the help of modern research methods involving high-tech equipment, the microstructure is considered and the phase composition of the finished samples is determined. As a result of the conducted research, it was found that the composition of the selected clay and nickel slag in the obtained rational composition ensures the production of ceramic bricks of grades M175 and M200.

This is the first study on the use of nickel slag for the production of ceramic bricks. The results relate primarily to Russian feedstocks, but a methodology is presented that can be applied to other countries as well as to other silica-containing feedstocks.

To reveal the impact of the development of technology parks and innovative networks on the national digital economies.

The following methods are utilised: the complex method, statistical analysis, comparative method, correlation analysis and linear programming (method of the game approach category).

We reveal the impact of the development of technology parks and innovative networks on the national digital economies. Analysis of the formation of the digital economy includes the assessment of its components (Rank Knowledge, Rank Technology, Rank Future readiness) in the context of the development of the analysed developed countries (Belgium, France, Iceland, Spain and Hong Kong). It is discovered that Hong Kong and Iceland have high indicators of digital technologies implementation. We prove that these results are connected to investments in this sphere made by integration structures, including the sphere of business, sciences and government agents (in the case of Hong Kong). We perform an analysis of the clustering of the given countries and describe the main forms of integration that ensure the innovative development of the economy. Based on the study of analytical and statistical materials, we determine the perspective model of the impact of these integration mechanisms on the state of innovative development of the digital economy, which could be applied to developing countries.

The originality and value of this research are due to the development of a model of the impact of implementing the integration mechanisms on the state of innovative development of the digital economy, which could be used in the case of developing countries.