Invention Grant
- Patent Title: Method of producing recycled hardened materials using waste gypsum
- Patent Title (中): 使用废石膏生产再生硬化材料的方法
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Application No.: US11794879Application Date: 2005-07-07
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Publication No.: US07731792B2Publication Date: 2010-06-08
- Inventor: Jong-Won Park
- Applicant: Jong-Won Park
- Applicant Address: KR Jillye-myeon, Kimhae-si, Kyeongsangnam-do
- Assignee: Jong-Won Park
- Current Assignee: Jong-Won Park
- Current Assignee Address: KR Jillye-myeon, Kimhae-si, Kyeongsangnam-do
- Agency: Renner Otto Boisselle & Sklar, LLP
- International Application: PCT/KR2005/000052 WO 20050707
- International Announcement: WO2006/073215 WO 20060713
- Main IPC: C04B11/26
- IPC: C04B11/26 ; C04B14/00
Abstract:
Disclosed herein is a method for producing a recycled hardened material using waste gypsum. The method comprises treating acidic wastewater generated in the production of copper, zinc or titanium or the production of sodium hydroxide (caustic soda) and chlorine using saline water, with calcium hydroxide (slaked lime), so as to precipitate sludge, and mixing the precipitated sludge with pulp sludge ashes having pozzolanic properties.
Public/Granted literature
- US20080066651A1 Method of Producing Recycled Hardened Materials Using Waste Gypsum Public/Granted day:2008-03-20
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