发明名称 |
PREPARATION METHOD OF ARAGONITE-TYPE CALCIUM CARBONATE USING DUST GENERATED FROM STAINLESS STEEL REFINING PROCESS |
摘要 |
PURPOSE: Provided is a preparation method of aragonite-type calcium carbonate through a carbonation process by reacting CO2 gas with dust generated from a stainless steel refining process. The resultant aragonite(CaCO3) is applied to high functional materials requiring mechanical strength and optical property. CONSTITUTION: The aragonite-type calcium carbonate is prepared by the following steps of: preprocessing dust generated from stainless steel refining process through sieving, gravity separating, magnetic separating, filtering and drying; preparing Ca(OH)2 slurry by adding dust containing 1-15wt.% of Ca(OH)2 to 2L of Mg(Cl)2 solution containing 0.1-1.0M of Mg(Cl)2 in a glass reactor; flowing high purity CO2 gas at a rate of 0.1-1.0L/min between 40 and 80deg.C into the reactor with stirring for carbonation of Ca(OH)2 sludge; washing, filtering and drying. |
申请公布号 |
KR20040023437(A) |
申请公布日期 |
2004.03.18 |
申请号 |
KR20020055162 |
申请日期 |
2002.09.11 |
申请人 |
KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES(KIGAM) |
发明人 |
AHN, JI HWAN;JU, SEONG MIN;KIM, HWAN;KIM, HYEONG SEOK;PARK, SAM SIK |
分类号 |
C01F11/18 |
主分类号 |
C01F11/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|