Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for recovering iron through microwave roasting of copper tailings
The invention belongs to the technical field of extraction of valuable metals from non-ferrous metal tailings, and particularly relates to a method for recycling iron from copper tailings through microwave roasting. The method comprises the specific steps that copper tailings and a calcium material are mixed to be uniform, microwave roasting is adopted, oxygen is introduced, roasting is conducted at the temperature of 800-1000 DEG C, roasting slag is crushed and ground and then mixed with an acid solution for iron leaching, the iron leaching rate is not lower than 92%, and an iron chemical product is obtained after leaching liquid is subjected to concentration-cooling crystallization and recrystallization impurity removal. The method has the beneficial effects that the fayalite phase in the copper tailings can be effectively converted and decomposed at the temperature lower than 1000 DEG C, the energy consumption is low, the wet leaching iron leaching rate is high, the technological process is short, operation is easy, the iron leaching liquid can be used for preparing iron chemical products, the leaching residues are used for the cement industry, and resources are effectively recycled.
本发明属于有色金属尾渣中提取有价金属技术领域，具体涉及一种微波焙烧铜尾渣回收铁的方法。该方法具体步骤为：将铜尾渣、钙质物料混合均匀，采用微波焙烧并通入氧气，在800～1000℃焙烧，焙烧渣经破碎研磨后，与酸溶液混合进行铁浸出，铁浸出率不低于92％，浸出液经浓缩‑冷却结晶，重结晶除杂后得到铁化工产品。本发明的有益效果为：能在低于1000℃以下将铜尾渣中铁橄榄石物相有效转化分解，能耗低，湿法浸出铁浸出率高，工艺流程短，操作简单，铁浸出液可用于制备铁化工产品，浸出渣用于水泥工业，资源得到有效回收利用。
Method for recovering iron through microwave roasting of copper tailings
The invention belongs to the technical field of extraction of valuable metals from non-ferrous metal tailings, and particularly relates to a method for recycling iron from copper tailings through microwave roasting. The method comprises the specific steps that copper tailings and a calcium material are mixed to be uniform, microwave roasting is adopted, oxygen is introduced, roasting is conducted at the temperature of 800-1000 DEG C, roasting slag is crushed and ground and then mixed with an acid solution for iron leaching, the iron leaching rate is not lower than 92%, and an iron chemical product is obtained after leaching liquid is subjected to concentration-cooling crystallization and recrystallization impurity removal. The method has the beneficial effects that the fayalite phase in the copper tailings can be effectively converted and decomposed at the temperature lower than 1000 DEG C, the energy consumption is low, the wet leaching iron leaching rate is high, the technological process is short, operation is easy, the iron leaching liquid can be used for preparing iron chemical products, the leaching residues are used for the cement industry, and resources are effectively recycled.
本发明属于有色金属尾渣中提取有价金属技术领域，具体涉及一种微波焙烧铜尾渣回收铁的方法。该方法具体步骤为：将铜尾渣、钙质物料混合均匀，采用微波焙烧并通入氧气，在800～1000℃焙烧，焙烧渣经破碎研磨后，与酸溶液混合进行铁浸出，铁浸出率不低于92％，浸出液经浓缩‑冷却结晶，重结晶除杂后得到铁化工产品。本发明的有益效果为：能在低于1000℃以下将铜尾渣中铁橄榄石物相有效转化分解，能耗低，湿法浸出铁浸出率高，工艺流程短，操作简单，铁浸出液可用于制备铁化工产品，浸出渣用于水泥工业，资源得到有效回收利用。
Method for recovering iron through microwave roasting of copper tailings
一种微波焙烧铜尾渣回收铁的方法
HE ZHICHENG (Autor:in) / LIU FEI (Autor:in) / WANG JINGHUI (Autor:in) / JIANG LEI (Autor:in) / LIU YUANDONG (Autor:in) / WU XIAOLI (Autor:in) / LUO ANNENG (Autor:in) / WANG DAZHI (Autor:in)
01.03.2024
Patent
Elektronische Ressource
Chinesisch
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