Development of a process for producing h
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Katsuyama, Yasuro ;Yamasaki, Akihiro ;Iizuka, Atsushi ;Fujii, Minoru ;Kumagai, K
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Article
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2005
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American Institute of Chemical Engineers
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English
⚖ 161 KB
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## Abstract A new type of process for producing high‐purity calcium carbonate from waste cement powder was developed. The process consists of two main reactions; extraction of calcium in the form of calcium ions from waste cement powder in a water slurry by pressurized CO~2~ (typically at several M