Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for comprehensively recycling aluminum ash
The invention discloses a method for comprehensively recycling aluminum ash, which comprises the following steps: washing aluminum ash with water and desalting to obtain washed aluminum ash and washing liquid; drying the washed aluminum ash, and carrying out elemental analysis; according to the content of aluminum and fluorine, thermodynamic calculation of calcification alkali fusion is carried out, an alkali flux and a calcification agent are added into the aluminum ash according to the thermodynamic calculation result, and after uniform mixing, a roasting raw material is obtained; roasting the roasting raw material to obtain a roasted material; the roasted material is subjected to water leaching, then solid-liquid separation is conducted, and water leaching liquid and water leaching residues are obtained; concentrating and crystallizing the water extract to obtain sodium metaaluminate; and after being dried, the water leaching residues are used in the cement industry. According to the method disclosed by the invention, valuable elements in the aluminum ash are recycled while harmful substances in the aluminum ash are treated, valuable metal resources in the aluminum ash are utilized to the greatest extent while no pollutants are discharged, and recycling of the aluminum metal resources and harmless treatment of hazardous wastes are realized.
本发明公开了一种铝灰综合回收利用的方法，包括以下步骤：将铝灰进行水洗脱盐处理，得到水洗后的铝灰和水洗液；将水洗后的铝灰进行干燥，并进行元素分析；然后根据铝和氟的含量，进行钙化碱熔的热力学计算，再然后根据热力学计算的结果，向铝灰中加入碱熔剂和钙化剂，混合均匀后，得到焙烧原料；将焙烧原料进行焙烧，得到焙烧料；将焙烧料进行水浸，然后固液分离，得到水浸液和水浸渣；将水浸液浓缩结晶后，可以获得偏铝酸钠；水浸渣干燥后，用于水泥行业中。本发明的方法将铝灰中的有害物质得以处理的同时将铝灰中有价元素得以回收利用，无污染物排放到同时最大限度的利用铝灰中有价金属资源，实现了铝金属资源的回收和危险废物的无害化处置。
Method for comprehensively recycling aluminum ash
The invention discloses a method for comprehensively recycling aluminum ash, which comprises the following steps: washing aluminum ash with water and desalting to obtain washed aluminum ash and washing liquid; drying the washed aluminum ash, and carrying out elemental analysis; according to the content of aluminum and fluorine, thermodynamic calculation of calcification alkali fusion is carried out, an alkali flux and a calcification agent are added into the aluminum ash according to the thermodynamic calculation result, and after uniform mixing, a roasting raw material is obtained; roasting the roasting raw material to obtain a roasted material; the roasted material is subjected to water leaching, then solid-liquid separation is conducted, and water leaching liquid and water leaching residues are obtained; concentrating and crystallizing the water extract to obtain sodium metaaluminate; and after being dried, the water leaching residues are used in the cement industry. According to the method disclosed by the invention, valuable elements in the aluminum ash are recycled while harmful substances in the aluminum ash are treated, valuable metal resources in the aluminum ash are utilized to the greatest extent while no pollutants are discharged, and recycling of the aluminum metal resources and harmless treatment of hazardous wastes are realized.
本发明公开了一种铝灰综合回收利用的方法，包括以下步骤：将铝灰进行水洗脱盐处理，得到水洗后的铝灰和水洗液；将水洗后的铝灰进行干燥，并进行元素分析；然后根据铝和氟的含量，进行钙化碱熔的热力学计算，再然后根据热力学计算的结果，向铝灰中加入碱熔剂和钙化剂，混合均匀后，得到焙烧原料；将焙烧原料进行焙烧，得到焙烧料；将焙烧料进行水浸，然后固液分离，得到水浸液和水浸渣；将水浸液浓缩结晶后，可以获得偏铝酸钠；水浸渣干燥后，用于水泥行业中。本发明的方法将铝灰中的有害物质得以处理的同时将铝灰中有价元素得以回收利用，无污染物排放到同时最大限度的利用铝灰中有价金属资源，实现了铝金属资源的回收和危险废物的无害化处置。
Method for comprehensively recycling aluminum ash
一种铝灰综合回收利用的方法
JIAO FEN (Autor:in) / QIN WENQING (Autor:in) / DONG LIANGMIN (Autor:in) / ZHANG YOUFEI (Autor:in) / WANG HUANLONG (Autor:in)
31.05.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
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
/
C01C
Ammoniak
,
AMMONIA
/
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
/
C04B
Kalk
,
LIME
/
C22B
PRODUCTION OR REFINING OF METALS
,
Gewinnen oder Feinen von Metallen
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