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Resource utilization method of overhaul slag
The invention discloses a resourceful utilization method of overhaul slag, which comprises the following steps of: leaching and filtering the overhaul slag by water to obtain an alkaline leachate and a filter cake 1, fixing fluorine and extracting lithium from the filter cake 1, and filtering to obtain an acidic leachate and a filter cake 2; carrying out a flotation carbon extraction process on the filter cake 2 to obtain high-purity carbon powder and calcium-silicon slag; the alkaline leachate is subjected to decyanation treatment to obtain a high-fluorine solution, the high-fluorine solution, the acid leachate and a fluorine fixing agent react to obtain a fluorine product and a fluorine-removed mother solution, the fluorine-removed mother solution is subjected to salt separation to obtain a sodium salt product, water is completely recycled in the whole process, no industrial waste residues are generated, the economic value of the product is high, and all recycling and high-value utilization of the overhaul residues are achieved.
本发明公开了一种大修渣资源化利用方法，大修渣经水浸过滤得到碱性浸出液和滤饼1，滤饼1再经固氟提锂，过滤得到酸性浸出液和滤饼2；滤饼2经浮选提碳工艺，得到高纯碳粉和钙硅渣；碱性浸出液经脱氰处理得到高氟溶液，高氟溶液和酸性浸出液及固氟剂反应得到氟产品和除氟母液，除氟母液经析盐得到钠盐产品，整个过程水全部循环利用，无工业废渣产生，产品经济价值高，实现大修渣的全部资源化高值化利用。
Resource utilization method of overhaul slag
The invention discloses a resourceful utilization method of overhaul slag, which comprises the following steps of: leaching and filtering the overhaul slag by water to obtain an alkaline leachate and a filter cake 1, fixing fluorine and extracting lithium from the filter cake 1, and filtering to obtain an acidic leachate and a filter cake 2; carrying out a flotation carbon extraction process on the filter cake 2 to obtain high-purity carbon powder and calcium-silicon slag; the alkaline leachate is subjected to decyanation treatment to obtain a high-fluorine solution, the high-fluorine solution, the acid leachate and a fluorine fixing agent react to obtain a fluorine product and a fluorine-removed mother solution, the fluorine-removed mother solution is subjected to salt separation to obtain a sodium salt product, water is completely recycled in the whole process, no industrial waste residues are generated, the economic value of the product is high, and all recycling and high-value utilization of the overhaul residues are achieved.
本发明公开了一种大修渣资源化利用方法，大修渣经水浸过滤得到碱性浸出液和滤饼1，滤饼1再经固氟提锂，过滤得到酸性浸出液和滤饼2；滤饼2经浮选提碳工艺，得到高纯碳粉和钙硅渣；碱性浸出液经脱氰处理得到高氟溶液，高氟溶液和酸性浸出液及固氟剂反应得到氟产品和除氟母液，除氟母液经析盐得到钠盐产品，整个过程水全部循环利用，无工业废渣产生，产品经济价值高，实现大修渣的全部资源化高值化利用。
Resource utilization method of overhaul slag
一种大修渣资源化利用方法
LIU XIU (author) / LIAN YICHENG (author) / DU XIN (author) / ZHAO PING (author) / LIU WANCHAO (author) / ZHUANG LINGYUN (author) / ZHOU JINMENG (author) / WU MING (author) / YAN FEIFEI (author) / SONG XIANGRU (author)
2024-08-02
Patent
Electronic Resource
Chinese
IPC:
C01D
Verbindungen der Alkalimetalle, d.h. des Lithiums, Natriums, Kaliums, Rubidiums, Cäsiums oder Franciums
,
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C04B
Kalk
,
LIME
/
C10L
FUELS NOT OTHERWISE PROVIDED FOR
,
Anderweitig nicht vorgesehene Brennstoffe
| European Patent Office | 2024