Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Treatment method for recycling lepidolite leaching residues containing calcium
The invention discloses a treatment method for recycling calcium-containing lepidolite leaching residues, which is characterized by comprising the following steps: 1) mixing the calcium-containing lepidolite leaching residues with sulfuric acid, leaching in a constant-temperature water bath, filtering to obtain filtrate A and filter residues A, and drying the filter residues A to obtain calcium sulfate; (2) adding ammonia water into the filtrate A, heating and stirring in a constant-temperature water bath, and filtering to obtain filtrate B and filter residues B; and 3) continuously adding ammonia water into the filtrate B, stirring and leaching, concentrating, filtering and drying to obtain the nitrogen-potassium fertilizer. 4) adding hydrochloric acid into the filter residue B, heating, stirring and leaching, filtering to obtain filtrate C and filter residue C, and washing and drying the filter residue C to obtain white carbon black; and 5) continuously adding ammonia water into the filtrate C, heating and stirring in a constant-temperature water bath, filtering to obtain filtrate D and filter residue D, drying the filter residue D to obtain aluminum hydroxide, and concentrating and drying the filtrate D to obtain ammonium chloride. The method has the advantages that gypsum, nitrogen-potassium fertilizer, ammonium chloride, aluminum hydroxide and white carbon black can be prepared simultaneously.
本发明公开了一种含钙锂云母浸出渣回收利用的处理方法，特点是包括以下步骤：1)将含钙的锂云母浸出渣与硫酸混合后在恒温水浴中浸出后，过滤得到滤液A和滤渣A，将滤渣A烘干得硫酸钙；2)在滤液A中加入氨水，恒温水浴加热搅拌后过滤，获得滤液B和滤渣B；3)将滤液B中继续加入氨水搅拌浸出后，浓缩、过滤、干燥后获得氮钾肥；4)将滤渣B中加入盐酸加热搅拌浸出后，过滤得到滤液C和滤渣C，滤渣C经过洗涤、干燥后得到白炭黑；5)将滤液C中继续加入氨水，恒温水浴加热搅拌后过滤后，获得滤液D和滤渣D，滤渣D经过干燥后获得氢氧化铝，滤液D浓缩、干燥后可获得氯化铵，优点是可同时制备石膏、氮钾肥、氯化铵，氢氧化铝和白炭黑。
Treatment method for recycling lepidolite leaching residues containing calcium
The invention discloses a treatment method for recycling calcium-containing lepidolite leaching residues, which is characterized by comprising the following steps: 1) mixing the calcium-containing lepidolite leaching residues with sulfuric acid, leaching in a constant-temperature water bath, filtering to obtain filtrate A and filter residues A, and drying the filter residues A to obtain calcium sulfate; (2) adding ammonia water into the filtrate A, heating and stirring in a constant-temperature water bath, and filtering to obtain filtrate B and filter residues B; and 3) continuously adding ammonia water into the filtrate B, stirring and leaching, concentrating, filtering and drying to obtain the nitrogen-potassium fertilizer. 4) adding hydrochloric acid into the filter residue B, heating, stirring and leaching, filtering to obtain filtrate C and filter residue C, and washing and drying the filter residue C to obtain white carbon black; and 5) continuously adding ammonia water into the filtrate C, heating and stirring in a constant-temperature water bath, filtering to obtain filtrate D and filter residue D, drying the filter residue D to obtain aluminum hydroxide, and concentrating and drying the filtrate D to obtain ammonium chloride. The method has the advantages that gypsum, nitrogen-potassium fertilizer, ammonium chloride, aluminum hydroxide and white carbon black can be prepared simultaneously.
本发明公开了一种含钙锂云母浸出渣回收利用的处理方法，特点是包括以下步骤：1)将含钙的锂云母浸出渣与硫酸混合后在恒温水浴中浸出后，过滤得到滤液A和滤渣A，将滤渣A烘干得硫酸钙；2)在滤液A中加入氨水，恒温水浴加热搅拌后过滤，获得滤液B和滤渣B；3)将滤液B中继续加入氨水搅拌浸出后，浓缩、过滤、干燥后获得氮钾肥；4)将滤渣B中加入盐酸加热搅拌浸出后，过滤得到滤液C和滤渣C，滤渣C经过洗涤、干燥后得到白炭黑；5)将滤液C中继续加入氨水，恒温水浴加热搅拌后过滤后，获得滤液D和滤渣D，滤渣D经过干燥后获得氢氧化铝，滤液D浓缩、干燥后可获得氯化铵，优点是可同时制备石膏、氮钾肥、氯化铵，氢氧化铝和白炭黑。
Treatment method for recycling lepidolite leaching residues containing calcium
一种含钙锂云母浸出渣回收利用的处理方法
CHEN DONG (Autor:in) / GUO HONGWEI (Autor:in) / ZHAO WEI (Autor:in) / SU YIFAN (Autor:in)
17.06.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
C01C
Ammoniak
,
AMMONIA
/
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
/
C05G
Mischungen aus Düngemitteln, die als einzelne von verschiedenen Unterklassen der Klasse C05 umfasst werden
,
MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05
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