Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Comprehensive utilization method of zinc roasting oxidation waste residues
The invention discloses a comprehensive utilization method of zinc roasting oxidation waste residues. The comprehensive utilization method comprises the following steps that (1), flotation of copper and silver is carried out, specifically, zinc residues are finely ground, a capturing agent and No.2 oil are added for flotation, wherein flotation includes primary roughing, primary concentration andsecondary scavenging, and flotation concentrate and tailings A are obtained; (2), magnetic separation is carried out, specifically, flotation concentrate is subjected to magnetic separation through ahigh-gradient pulse high-intensity magnetic separator after being finely ground, organic carbon in the flotation concentrate is removed, the magnetic field intensity is 1T, and magnetic separation concentrate and tailings B are obtained; and (3) roasting and acid leaching are carried out, specifically, the magnetic concentrate is roasted and then is subjected to superfine grinding, then the magnetic concentrate is leached with sulfuric acid, a pregnant solution, a washing solution and leaching residues are obtained after filtering and washing, precious metals are recycled from the pregnant solution, the tailings A and tailings B are taken as cement ingredients, and the leaching residues are taken as pyrometallurgical raw material. According to the comprehensive utilization method of the zinc roasting oxidation waste residues, the metal recycling rate is higher, the tailings generated in the process are ingredients of cement, the leaching slag is used as the raw material for pyrometallurgy and can be directly reused, the products in each link are properly applied, the cost is lower, the tailings-free comprehensive recycling is realized, and the promotion of the zinc slag recycling technology is facilitated.
本发明公开了一种锌焙烧氧化废渣综合利用方法，包括：(1)浮选铜银：将锌渣经磨细，加入捕获剂、二号油进行浮选，包括一次粗选、一次精选、两次扫选，得到浮选精矿、尾矿A；(2)磁选：浮选精矿经磨细后用高梯度脉冲强磁选机磁选，去除浮选精矿中有机碳，磁场强度为1T，得到磁选精矿、尾矿B；(3)焙烧酸浸：磁选精矿经焙烧后超磨细，用硫酸浸出，过滤洗涤后得到贵液、洗液、浸渣，贵液回收贵金属，尾矿A、尾矿B为水泥配料，浸渣为火法冶金原料。本发明金属回收率较高，过程中产生的尾矿是水泥的配料，浸出渣作为火法冶金的原料，可直接再利用，将各环节产物适地应用，成本较低，实现无尾矿综合回收利用，利于锌渣回收再利用技术的推进。
Comprehensive utilization method of zinc roasting oxidation waste residues
The invention discloses a comprehensive utilization method of zinc roasting oxidation waste residues. The comprehensive utilization method comprises the following steps that (1), flotation of copper and silver is carried out, specifically, zinc residues are finely ground, a capturing agent and No.2 oil are added for flotation, wherein flotation includes primary roughing, primary concentration andsecondary scavenging, and flotation concentrate and tailings A are obtained; (2), magnetic separation is carried out, specifically, flotation concentrate is subjected to magnetic separation through ahigh-gradient pulse high-intensity magnetic separator after being finely ground, organic carbon in the flotation concentrate is removed, the magnetic field intensity is 1T, and magnetic separation concentrate and tailings B are obtained; and (3) roasting and acid leaching are carried out, specifically, the magnetic concentrate is roasted and then is subjected to superfine grinding, then the magnetic concentrate is leached with sulfuric acid, a pregnant solution, a washing solution and leaching residues are obtained after filtering and washing, precious metals are recycled from the pregnant solution, the tailings A and tailings B are taken as cement ingredients, and the leaching residues are taken as pyrometallurgical raw material. According to the comprehensive utilization method of the zinc roasting oxidation waste residues, the metal recycling rate is higher, the tailings generated in the process are ingredients of cement, the leaching slag is used as the raw material for pyrometallurgy and can be directly reused, the products in each link are properly applied, the cost is lower, the tailings-free comprehensive recycling is realized, and the promotion of the zinc slag recycling technology is facilitated.
本发明公开了一种锌焙烧氧化废渣综合利用方法，包括：(1)浮选铜银：将锌渣经磨细，加入捕获剂、二号油进行浮选，包括一次粗选、一次精选、两次扫选，得到浮选精矿、尾矿A；(2)磁选：浮选精矿经磨细后用高梯度脉冲强磁选机磁选，去除浮选精矿中有机碳，磁场强度为1T，得到磁选精矿、尾矿B；(3)焙烧酸浸：磁选精矿经焙烧后超磨细，用硫酸浸出，过滤洗涤后得到贵液、洗液、浸渣，贵液回收贵金属，尾矿A、尾矿B为水泥配料，浸渣为火法冶金原料。本发明金属回收率较高，过程中产生的尾矿是水泥的配料，浸出渣作为火法冶金的原料，可直接再利用，将各环节产物适地应用，成本较低，实现无尾矿综合回收利用，利于锌渣回收再利用技术的推进。
Comprehensive utilization method of zinc roasting oxidation waste residues
一种锌焙烧氧化废渣综合利用方法
WU JUNJIE (Autor:in) / DAI HUIXIN (Autor:in) / GOU MINGLIANG (Autor:in) / NIE QI (Autor:in) / TANG DONGDONG (Autor:in) / MA YIJIA (Autor:in) / GAO LIKUN (Autor:in) / WANG XIAOZHAO (Autor:in) / XIA DAN (Autor:in) / SU CHAO (Autor:in)
16.10.2020
Patent
Elektronische Ressource
Chinesisch
Method for melting, chlorinating, roasting and recycling hazardous waste incineration residues
| Europäisches Patentamt | 2020
Comprehensive resource utilization method of phosphate tailing waste residues and carbide slag
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2020
Synergistic resource utilization method for waste water and waste residues
| Europäisches Patentamt | 2024