The scientific results of the optimization of raw materials mixtures for the production of cement clinker with the involvement as a secondary raw material – technogenic waste of the enrichment of non-ferrous metal ores, which by their chemical composition are of interest as an iron-aluminum-silicate raw material component. It has been established that the use of non-ferrous metal ore enrichment waste in the raw material mixture in the form of secondary technogenic raw materials contributes to its utilization, reducing the specific fuel consumption during clinker firing by 5.76%, reducing the firing temperature by 50 °C and obtaining cement clinker that meets the requirements for chemical and mineralogical compositions according to GOST 31108-2016.
This paper presents the development of composite silicate mass compositions based on man-made waste for the production of autoclave hardening products, as well as the results of physico-chemical studies of hydration products of silicate materials. The possibility, expediency and efficiency of using multi-tonnage technogenic waste of Kazakhstan in the industry of composite building materials is shown. Based on the results of the conducted research, the composition of a composite silicate mass based on burnt carbonate-barium tailings (8–12%), electrothermophosphoric slags (82–90%) or sand and dust from cement kiln electrofilters (2–5%) for the production of autoclave hardening products was developed. It was found that the cementing substance in composite silicate materials is represented by CSH(B) calcium silicate hydrates, tobermorite and serpentine. The simultaneous presence of fibrous and crystalline calcium and magnesium silicate hydrates in hydration products leads to the creation of composite products with a maximum strength of 41–49 MPa.
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