无料钟并罐装料过程的离散单元模拟

采用离散单元法(DEM)对高炉并罐式无料钟装料装置中颗粒的装料行为进行了数值模拟研究。由于皮带及入料口的特殊结构导致了左右料罐料层形状的不对称,本工作通过添加内构件来减弱左右两料罐间料层形状的不对称性,并定量分析了加入内构件前后两罐间料层分布的不对称程度。数值结果表明:颗粒在内构件的作用下,受到的惯性作用减弱,颗粒经导料挡板加入左右料罐时的落点位置偏离减小,从而使颗粒在两料罐料层整体分布接近对称,有效减弱了料层分布不对称程度。     

离子型稀土矿抑杂浸出中抑铝剂的研究

研究了在抑杂浸出过程中添加抑铝剂对稀土浸出的影响，筛选出了适宜的抑铝剂．所筛选出的抑铝剂能适应于我国南方不同类型离子型稀土矿，抑铝剂的添加几乎不影响稀土的浸出率．通过抑杂浸出得到的浸出液中铝离子含量小于2mg／L，去除率达到98％以上，铁离子含量小于0．3mg／L，该浸出液无需净化直接用碳酸氢铵沉淀得到的碳酸沉淀稀土符合生产质量要求．稀土产品质量达到国内现行标准，有效地简化了生产流程，并能减少5％-15％的稀土损失．     

净化含Cr6+废水之菌株培养条件的实验研究

通过考察筛选出的菌株B-5和C-7的培养条件,实验结果表明:培养基为1#,碳源为玉米淀粉,氮源为牛肉膏,温度为30 ℃,摇床转速为160 r/min,B-5在pH值为6.5时,对[Cr6+]=1.00 mg/L吸附率最大值为77.5%,C-7在pH值为5.0时,对[Cr6+]=1.00mg/L吸附率最大值为79.4%.     

净化含Cr^6＋废水之菌株培养条件的实验研究

通过考察筛选出的菌株B-5和C-7的培养条件，实验结果表明：培养基为1#，碳源为玉米淀粉，氮源为牛肉膏，温度为30℃，摇床转速为160r／rain，B-5在pH值为6．5时，对[Cr^6 ]=1.00mg／L吸附率最大值为77．5％，C-7在pH值为5．0时，对[Cr^6 ]=1．00mg／L吸附率最大值为79．4％。     

Behavior of leaching and precipitation of weathering crust ion-absorbed type by magnetic field

With weathering crust Ion-Absorbed Type Rare Earth （IATRE） ores in southern Jiangxi as an example, rare earth percolation leaching and leaching solution precipitation process research were carried out under conditions of magnetic field. The effect on the rare earth leaching process such as magnetic field strength, magnetization time, magnetization manner, and other factors were discussed. The effect on the mother rare earth liquor sedimentation rate, purity, and crystallization behavior such as magnetic field strength, magnetization time, and magnetization manner were investigated. Leaching and precipitation mechanism of magnetization on IATRE were analyzed. The results showed that the magnetic treatment can improve leaching rate of weathering crust IATRE and the sedimentation rate, and reduce consumption of reagents.     

《选矿专题试验》实验课教学探讨

根据《选矿专题试验》实验课的特点及实验教学经验,围绕加强学生分析解决问题的能力培养,提高学生参加实验的主动性、积极性;加强实验纪律、实验考核,提高实验教学质量等问题,对《选矿专题试验》实验课的教学进行了改革偿试并取得了较好的效果．     

磁场强化硫脲提金技术的热力学研究

与常规硫脲浸金相比,磁场强化硫脲浸金可得到更高的浸金率,且金的溶解速度更快．根据不同温度下的浸出试验结果,利用Ａｒｒｈｅｎｉｕｓ公式计算了体系浸出的表现活化能,计算结果表明磁场强化使硫脲浸取高砷金精矿体系的表现活化能由１３．０２ｋＪ／ｍｏｌ降至１０．５３ｋＪ／ｍｏｌ．此外,还从热力学的宏观角度与微观角度讨论了磁场强化硫脲提金工艺的强化作用机理．     

无机组合抑制剂对黄铁矿浮选行为及机理研究

利用单矿物浮选试验研究了硫代硫酸钠、氯化钙、硫酸锌以及它们之间的组合药剂对黄铁矿可浮性的影响,并对其作用机理进行了分析。     

磁化对矿物水冶的影响

本文分别对氧化金矿石、硫化金矿石和高砷含金硫化矿浸金，高硫高砷银铅矿浸银和硫化矿浸铋进行了磁化水冶试验，结果表明：磁化可显著提高目的矿物的浸出率。根据试验结果及研究资料在理论上对上述结果进行了初步分析     

Kinetic process of oxidative leaching of chalcopyrite under low oxygen pressure and low temperature

Kinetic process of oxidative leaching of chalcopyrite in chloride acid hydroxide medium under oxygen pressure and low temperature was investigated. The effect on leaching rate of chalcopyrite caused by these factors such as ore granularity, vitriol concentration, sodium chloride concentration, oxygen pressure and temperature was discussed. The results show that the leaching rate of chalcopyrite increases with decreasing the ore granularity. At the early stage of oxidative reaction, the copper leaching rate increases with increasing the oxygen pressure and dosage of vitriol concentration, while oxygen pressure affects leaching less at the later stage. At low temperature, the earlier oxidative leaching process of chalcopyrite is controlled by chemical reactions while the later one by diffusion. The chalcopyrite oxidative leaching rate has close relation with ion concentration in the leaching solution. The higher ion concentration is propitious for chalcopyrite leaching.