Method for producing high-purity batterite-type and calcite-type calcium carbonate using indirect carbonation of seawater

摘要

The present invention relates to a method for producing high-purity vaterite-type and calcite-type calcium carbonate using indirect carbonation of seawater, and alkali industrial by-products (CKD, PSA) using seawater as a solvent. , CaO, Ca(OH) ₂ calcium is eluted. It can elute calcium with high efficiency using magnesium contained in seawater, and precipitation of magnesium in seawater that interferes with the formation of high-purity calcium carbonate by using alkali industrial by-products By doing so, it is possible to increase the purity of calcium carbonate, and by using seawater instead of a high-cost solvent, it is possible to economically manufacture 99.9% or more high-purity batterite-type and calcite-type calcium carbonate.