In this article, the development of a technology for the production of clinkers and cements based on them using previously unexplored alternative sources of local raw materials in Karakalpakstan is studied, is an effective solution to the problem of covering the cement industry’s construction industry needs. Development of practical recommendations on the technology for obtaining Portland cement clinkers and cements based on the raw materials of Karakalpakstan. The study of the chemical and mineralogical composition of the raw materials of Karakalpakstan with the aim of their application to obtain high-quality clinkers and cements based on them. For raw mixes, which include limestone from the Dzhamansay-2 deposit, the clay component of the Berkuttau site, an iron-containing cinder from Almalyk mining-and-metallurgical integrated works, and gypsum stone from the Northern Dzhamansay deposit, the optimal firing temperature is 1450 ° C, which corresponds to the classical temperature index Portland cement clinker production. Raw mixtures based on the tested raw materials are highly reactive. When firing two-component feed mixtures using limestone of the Dzhamansay-2 deposit and basalt rock of the Berkuttau section, the optimum clinker sintering interval is 1400-1420 ° C;. Physical and mechanical tests have established that, on the basis of the tested raw materials (limestone of the Dzhamansay-2 deposit, the clay component of the Northern Dzhamansay deposit, the basaltic rock of the Berkuttau site and iron-containing additives), clinkers can be produced for general construction and sulfate-resistant cement grades of at least “400”, according to technological indicators fully meeting the requirements of State standard 10178; State standard 30515 and State standard 222 66.

The possibility of improving the physical and mechanical properties of Portland cement with maximum clinker savings by optimizing the composition of hybrid additives is shown. It has been established that hybrid additives combining local mineral ingredients with the additive of artificial origin Phosfozol allow saving low-clinker Portland cement while maintaining its original grade 400.

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The chemical-mineralogical compositions and physic-chemical properties of slag waste from the Angren TPP and Uzmetkombinat JSC were determined. A Conclusion was issued on their suitability for use as additives in cement and the possibility of using them for producing new types of hybrid additives for the production of composite Portland cements. With different combinations and ratios of Portland cement clinker, natural gypsum stone, and hybrid additives, the compositions of composite Portland cements were obtained and optimized, and Conclusions were issued on their compliance with the requirements of the Standard of the Republic of Uzbekistan Uz DSt 2830:2014 "Portland cement with composite additives. Specifications".

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