Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Resource comprehensive recycling method of roasting cyanidation tailings
The invention discloses a resource comprehensive recycling method of roasting cyanidation tailings. The method comprises the following steps: the roasting cyanidation tailings and a composite additive are mixed, and placed into a closed hearth, and roasting, reducing and cooling are carried out to obtain roasting slag, wherein the composite additive is a mixture of carbon and FeS2; the roasting slag and water are mixed and pulpified, and then ore grinding pretreatment is conducted; a non-cyanide leaching agent is added into the slurry obtained after ore grinding pretreatment for a reaction, filtering separation is conducted after the reaction is completed, and gold extraction tailings and a pregnant solution are obtained, wherein the pregnant solution is replaced with zinc powder to recover gold and silver; and the gold extraction tailings are subjected to magnetic separation to deeply separate materials rich in silicon and iron. According to the method, a C + FeS2 synergistic reduction system is adopted, activation transformation is finely regulated and controlled, ore phase directional reconstruction of the roasting cyanidation tailings can be efficiently achieved while efficient decyanation and detoxification are conducted on the roasting cyanidation tailings, the excessive reduction condition of conventional carbon reduction is avoided, wrapping of iron oxide and primary sulfide ore on gold is efficiently opened, and the recovery rate of gold in subsequent treatment can be effectively improved.
本发明公开了一种焙烧氰化尾渣的资源综合回收利用方法：将焙烧氰化尾渣与复合添加剂混合后置于密闭炉膛中，焙烧还原，冷却，得到焙烧渣；复合添加剂为碳和FeS2混合物；将焙烧渣与水混合浆化，然后磨矿预处理；在磨矿预处理后的浆料中加入非氰浸出药剂进行反应，反应完成后过滤分离，得到提金尾渣和贵液；贵液采用锌粉置换回收金和银；提金尾渣通过磁选深度分离富集硅和铁的物料。本发明采用C+FeS2协同还原体系，精细调控活化转型，对焙烧氰化尾渣高效脱氰解毒的同时可高效实现焙烧氰化尾渣矿相定向重构，避免常规碳还原出现过度还原情况，高效打开铁氧化物和原生硫化矿对金的包裹，可有效提高后续处理中金的回收率。
Resource comprehensive recycling method of roasting cyanidation tailings
The invention discloses a resource comprehensive recycling method of roasting cyanidation tailings. The method comprises the following steps: the roasting cyanidation tailings and a composite additive are mixed, and placed into a closed hearth, and roasting, reducing and cooling are carried out to obtain roasting slag, wherein the composite additive is a mixture of carbon and FeS2; the roasting slag and water are mixed and pulpified, and then ore grinding pretreatment is conducted; a non-cyanide leaching agent is added into the slurry obtained after ore grinding pretreatment for a reaction, filtering separation is conducted after the reaction is completed, and gold extraction tailings and a pregnant solution are obtained, wherein the pregnant solution is replaced with zinc powder to recover gold and silver; and the gold extraction tailings are subjected to magnetic separation to deeply separate materials rich in silicon and iron. According to the method, a C + FeS2 synergistic reduction system is adopted, activation transformation is finely regulated and controlled, ore phase directional reconstruction of the roasting cyanidation tailings can be efficiently achieved while efficient decyanation and detoxification are conducted on the roasting cyanidation tailings, the excessive reduction condition of conventional carbon reduction is avoided, wrapping of iron oxide and primary sulfide ore on gold is efficiently opened, and the recovery rate of gold in subsequent treatment can be effectively improved.
本发明公开了一种焙烧氰化尾渣的资源综合回收利用方法：将焙烧氰化尾渣与复合添加剂混合后置于密闭炉膛中，焙烧还原，冷却，得到焙烧渣；复合添加剂为碳和FeS2混合物；将焙烧渣与水混合浆化，然后磨矿预处理；在磨矿预处理后的浆料中加入非氰浸出药剂进行反应，反应完成后过滤分离，得到提金尾渣和贵液；贵液采用锌粉置换回收金和银；提金尾渣通过磁选深度分离富集硅和铁的物料。本发明采用C+FeS2协同还原体系，精细调控活化转型，对焙烧氰化尾渣高效脱氰解毒的同时可高效实现焙烧氰化尾渣矿相定向重构，避免常规碳还原出现过度还原情况，高效打开铁氧化物和原生硫化矿对金的包裹，可有效提高后续处理中金的回收率。
Resource comprehensive recycling method of roasting cyanidation tailings
一种焙烧氰化尾渣的资源综合回收利用方法
GUO XUEYI (Autor:in) / ZHANG LEI (Autor:in) / TIAN QINGHUA (Autor:in) / QIN HONG (Autor:in)
29.10.2021
Patent
Elektronische Ressource
Chinesisch
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