Process for modifying steel slag through acidification and carbonization coupling

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United States of America Patent

PATENT NO 11572307
SERIAL NO

17845175

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Abstract

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The present invention belongs to the technical field of metallurgical solid waste resource utilization, and particularly relates to acidification and carbonization coupling modified steel slag as well as a preparation process and an application thereof. The process specifically includes the following steps of adopting acetic acid, tributyl phosphate, ethanolamine and a NaOH and Ca(OH)2 emulsion as reaction reinforcing agents, and modifying the steel slag together with CO2-rich lime kiln flue gas. The process for modifying the steel slag through acidification and carbonization coupling provided in the present invention has the advantages of simple reaction conditions and no need of high-pressure CO2, additionally, the carbonation reaction rate can be greatly increased, and f-CaO and f-MgO in the steel slag can be effectively eliminated.

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Patent Owner(s)

Patent OwnerAddress
SHANDONG UNIVERSITYNO 17923 JINGSHI ROAD LIXIA DISTRICT JINAN SHANDONG 250061 250061
QINGDAO DANENG ENVIRONMENTAL PROTECTION EQUIPMENT CO LTDNO 3 DANENG ROAD INDUSTRIAL PARK JIAOBEI OFFICE JIAOZHOU QINGDAO SHANDONG 266300
QINGDAO HAITAI ENERGY SCIENCE AND TECHNOLOGY RESEARCH INSTITUTENO 162 QIYUNSHAN 2ND ROAD JIMO DISTRICT QINGDAO SHANDONG 266299

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Jingcai Qingdao, CN 5 0
Li, Shusheng Qingdao, CN 9 3
Liang, Xiaojie Qingdao, CN 1 0
Liu, Yanhui Qingdao, CN 20 56
Ma, Chunyuan Qingdao, CN 11 1
Wang, Peng Qingdao, CN 1420 6748
Wang, Yong Qingdao, CN 1107 9670

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