PRODUCTION METHOD FOR HIGH-PURITY CALCITE AND AMMONIUM SULPHATE BY USING GYPSUM

摘要

Provided is a recycling method for producing calcite and ammonium sulfate having a high purity of at least 95% and generated by means of a carbonation reaction for fixing carbon dioxide inside the crystal structure of a mineral, and in which waste gypsum is reacted with carbon dioxide, which is a greenhouse gas, such that the carbon dioxide is fixed as a stable mineral, and high-purity calcite and ammonium sulfate are produced as resultant products.

主权项

1. A method for producing high-purity calcite and ammonium sulfate having a purity of at least 95%, comprising: performing a carbonation reaction by adding a predetermined amount of carbon dioxide to slurry with which water, ammonia water, and gypsum are mixed.