黄金
黃金
황금
GOLD JOURNAL
2013年
7期
48-52
,共5页
响应曲面法%产氨细菌%碱性铜矿%浸矿条件
響應麯麵法%產氨細菌%堿性銅礦%浸礦條件
향응곡면법%산안세균%감성동광%침광조건
response surface methodology%ammonia-producing bacteria%alkaline cooper ore%leaching condition
为了研究产氨细菌浸矿条件，采用响应曲面法对产氨细菌浸出碱性铜矿石的工艺条件进行优化，并揭示各因素对铜浸出效果的影响水平及其交互作用规律。研究结果表明，采用响应曲面法的中心组合设计（ CCD ）模型对试验结果进行回归分析，响应值精确度为98．85％。各因素对铜浸出效果影响的大小为：细菌初始接种量＞助浸剂浓度＞矿浆浓度。产氨细菌浸出碱性铜矿石最佳工艺条件为：细菌初始接种量30％，矿浆浓度14％，助浸剂浓度0．04 mol/L。在此条件下，浸出144 h后，铜浸出率可达47．32％，比优化前提高了4．67％。
為瞭研究產氨細菌浸礦條件，採用響應麯麵法對產氨細菌浸齣堿性銅礦石的工藝條件進行優化，併揭示各因素對銅浸齣效果的影響水平及其交互作用規律。研究結果錶明，採用響應麯麵法的中心組閤設計（ CCD ）模型對試驗結果進行迴歸分析，響應值精確度為98．85％。各因素對銅浸齣效果影響的大小為：細菌初始接種量＞助浸劑濃度＞礦漿濃度。產氨細菌浸齣堿性銅礦石最佳工藝條件為：細菌初始接種量30％，礦漿濃度14％，助浸劑濃度0．04 mol/L。在此條件下，浸齣144 h後，銅浸齣率可達47．32％，比優化前提高瞭4．67％。
위료연구산안세균침광조건，채용향응곡면법대산안세균침출감성동광석적공예조건진행우화，병게시각인소대동침출효과적영향수평급기교호작용규률。연구결과표명，채용향응곡면법적중심조합설계（ CCD ）모형대시험결과진행회귀분석，향응치정학도위98．85％。각인소대동침출효과영향적대소위：세균초시접충량＞조침제농도＞광장농도。산안세균침출감성동광석최가공예조건위：세균초시접충량30％，광장농도14％，조침제농도0．04 mol/L。재차조건하，침출144 h후，동침출솔가체47．32％，비우화전제고료4．67％。
So as to study the leaching conditions of ammonia-producing bacteria ,the response surface methodology ( RSM) was applied to optimize the leaching process of alkaline cooper ore with ammonia-producing bacteria and un-covered the magnitude in which each factor affected the leaching effect of copper and the rules with which each factor affect the other .A central composite design ( CCD) model out of the response surface methodology was used for regres-sion analysis of the test result and the accuracy of response value is 98 .85 %.The initial bacteria inoculation has the highest level of influence on copper leaching ,followed by the leaching aid and pulp density .Based on the RSM analy-sis,the optimum conditions of the leaching process of alkaline cooper ore with ammonia -producing bacteria were:ini-tial bacteria inoculation 30%,pulp density 14%,ammonium sulfate 0 .04 mol/L as the leaching aid .Under such con-ditions,after 144 h the leaching rate of cooper was 47.32 %,which was 4.67 %higher than that before optimized .
