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广东省冶金厅于今年3月召开了凡口铅锌矿选矿工艺与苯胺黑药技术鉴定会。会议对以下三个项目进行了技术鉴定,并分别通过了技术鉴定证书。矿冶研究总院和凡口铅锌矿的阶段细磨苯胺黑药选矿工艺,于1979进行了工业试验。其指标为:铅精矿品位60.55%,铅回收率81.11%,比同期生产系统分别提高14%和2.74,6%,锌精矿质量提高两个等级。取得了比较显著的技术经济效果。凡口铅锌矿的两段细磨、高碱度、丁黄药、浓70松醇油选矿工艺,去年5～8月生产试验平均指标为,铅精矿品位53.12%,铅回收率78.49%,比原流程分别提高2.56%和3.25%。9月在生产上全面
Metallurgy Department of Guangdong Province in March this year, held a mine lead-zinc ore beneficiation process and aniline black drug technology appraisal meeting. The meeting of the following three projects were technical appraisal, and passed the technical appraisal certificate. Mining and Metallurgy Research Institute and the stage of lead-zinc mine fined aniline black dressing beneficiation process, in 1979 conducted an industrial test. The indicators are: lead concentrate grade 60.55%, lead recovery 81.11%, respectively, over the same period production system increased by 14% and 2.74,6%, zinc concentrate to improve the quality of two levels. Achieved a more significant technical and economic results. Fankou lead-zinc mine two fine grinding, high alkalinity, butyl xanthate, concentrated 70 pine oil processing technology, last May to August the average production test indicators, lead concentrate grade 53.12%, lead recovery rate of 78.49% , Respectively, 2.56% and 3.25% higher than the original process. September in a comprehensive production