FIRING PROCESSES OF RAW MATERIALS MIXTURES OF "KASPIY CEMENT" LLP WITH ADDITIVES OF COMPLEX MINERALIZERS

Abstract

High-temperature clinker firing processes are energy-intensive. The production of 1 ton of clinker requires 110–130 kg of conventional fuel. Another issue is environmental pollution due to carbon dioxide emissions. During the firing of 1 ton of clinker, up to 700–800 kg of CO₂ is released into the atmosphere.

The influence of mineralizers on the firing processes of raw mixes at LLP "CaspiyCement" has been studied. It has been established that CaF₂ and complex mineralizers based on "CaF₂ + phosphogypsum" reduce the decomposition temperature of chalk by 30 °C. Clinker formation processes are completed at 1400 °C or at temperatures 50–100 °C lower. The free CaO content is 1.2–2.0%. Lowering the clinker firing temperature and introducing granulated phosphorus slags into the raw mix will reduce CO₂ emissions into the atmosphere and mitigate environmental pollution.