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纱岭金矿海水选金及氰化试验研究
- 作者：
王秀会
- 作者单位：
- （莱州汇金矿业投资有限公司）
基金项目：
- 国家重点研发计划项目（2016YFC0600800）
详细信息：
- 作者简介：
- 王秀会（1973—），男，高级工程师，从事选矿和矿山建设现场工作；E⁃mail：459466379@qq. com纱岭金矿海水选金及氰化试验研究王秀会（莱州汇金矿业投资有限公司）
- PDF下载
Experimental study on seawater‑based gold extraction and cyanidation in the Shaling Gold Mine
- English Author：
Wang Xiuhui
- Unit：
- （Laizhou Huijin Mining Investment Co., Ltd.）
- 摘要
- 在线预览
- 参考文献
摘要:
海水选金因具有绿色环保的特性受到广泛关注。该技术利用海水中丰富的氯离子与金离子形成稳定络合物的特性，实现对金的选择性浸出。纱岭金矿基于独特的地理位置和资源条件，采用海水选金不仅能大幅减少对淡水资源的依赖，降低运营成本，还能适应深井开采的特殊需求。试验结果表明：海水选金对纱岭金矿的浮选指标影响较小，金回收率可达 95.85 %。氰化试验取得了理想的技术指标，在磨矿细度-0.045 mm占比 95 %，CaO用量达到 6 000 g/t，碱处理时间 3 h，NaCN用量 7 000 g/t，矿浆浓度 40 %，浸出时间 48 h条件下，获得了浸渣金品位 1.19 g/t、金浸出率97.96 %的良好选别指标。海水选金在纱岭金矿的应用是资源条件、技术可行性和环保政策共同作用的结果，体现了现代矿业可持续发展的趋势。
关键词:
金矿；海水选金；浮选；氰化；复杂难处理；可持续发展
Abstract:
Seawater⁃based gold extraction has attracted widespread attention due to its environmentally friendlycharacteristics. This method leverages the ability of the rich chloride ions in seawater to form stable complexes withgold ions, enabling selective leaching of gold. Given its unique geographical location and resource conditions, theShaling Gold Mine adopted seawater⁃based gold extraction, which significantly reduces dependence on freshwaterresources, lowers operational costs, and meets the specific demands of deep underground mining. Experimental resultsindicate that seawater⁃based gold extraction has minimal impact on the flotation metrics in the Shaling Gold Mine, witha gold recovery rate reaching 95.85 %. The cyanidation tests yielded favorable technical results: under the conditions ofgrinding fineness of −0.045 mm accounting for 95 %, CaO dosage of 6 000 g/t, alkaline pretreatment time of 3 h, NaCNdosage of 7 000 g/t, pulp concentration of 40 %, and leaching time of 48 h, good separation performance including aleach residue grade of 1.19 g/t and a gold leaching rate of 97.96 % was achieved. The application of seawater⁃basedgold extraction at the Shaling Gold Mine reflects the combined influence of resource conditions, technical feasibility,and environmental policies, representing a sustainable development trend in modern mining.
Keywords:
gold mine; seawater⁃based gold extraction; flotation; cyanidation; complex and refractory; sustainabledevelopment
