四川某粘土型钒矿工艺矿物学研究

通过矿相显微镜、扫描电子显微镜、电子探针、X射线能谱元素面分析等多种手段综合研究四川某地黏土型钒矿中钒的赋存状态。样品为铝质黏土岩，V2O5含量为0.93%。黏土矿物总量为61.7%，石英含量13.4%，黄铁矿含量17.1%。样品具典型的黏土结构，矿物粒度微细。钒有两种赋存状态，一种呈钒云母的独立矿物形式存在，另一种则呈类质同相的形式存在于绢云母和伊利石中。典型测点平均含钒量为0.873%，fm-5测点钒含量2.143%，为钒云母；fm-6测点钒含量0.138%，为含钒伊利石；fm-7测点钒含量0.333%，为含钒绢云母。与钒云母、伊利石、绢云母三者结构相似，且粒度极其微细，无法分离，故应作为一个整体单元来回收利用钒。建议通过浮选脱除黄铁矿，然后通过擦洗—脱泥的方式对石英和黏土矿物进行分离，从而实现钒的富集。     

Stability of Cold-Pressed Oil from Commercial Indian Niger (Guizotia abyssinica (L.f.) Cass.) Seed as affected by Blending and Interesterification

Blending and interesterification of cold‐pressed oil from commercially available niger (Guizotia abyssinica (L.f.) Cass.) seeds was performed to improve its stability. The fatty acid composition of cold‐pressed niger seed oil (NSO) revealed that it contained a huge amount of polyunsaturated linoleic acid (69.2 %). NSO being rich in polyunsaturated fatty acids (PUFA) was susceptible to oxidation and hence was blended with saturated fatty acid (SFA) rich coconut oil (CNO) and monounsaturated fatty acid (MUFA) rich olive–pomace oil (OO) to enhance its stability. CNO contained a total of 91.3 % of SFA, while OO had oleic acid, C18:1 (74.3 %) as MUFA. Two blends of NSO with CNO and OO, i.e. NSO + CNO(B) and NSO + OO(B), were prepared in the ratio of 1:1. The blends were further interesterified using the lipase enzyme from Rhizomucor meihei and interesterified oils, i.e. NSO + CNO(I) and NSO + OO(I), were obtained. The oxidative stability of the oils was evaluated by incubating them at 37 °C and 55 % relative humidity (RH) for a period of 45 days. The peroxide values of NSO + CNO(B), NSO + OO(B), NSO + CNO(I) and NSO + OO(I) showed a reduction by 53.3, 42.6, 65.3 and 55.4 %, respectively, while the conjugated diene values showed a reduction by 75.0, 66.9, 76.7 and 75.3 %, respectively, as compared to NSO during the incubation period. This is probably the first report on the stability improvement of niger seed oil through blending and interesterification.     

德兴铜矿表外矿的综合利用

为利用德兴铜矿矿床中２０％的表外矿，分析了表外矿的分布特点，进行了生产配矿控制，堆浸及根据多元素综合价值品位重新圈定开采境界等多途径的表外矿利用，取得了显著的经济效益和社会效益。     

白云鄂博中贫氧化矿磁选新工艺综合回收铌的研究

根据铌矿物与其它有用矿物、脉石矿物的磁性差异,采用弱磁—强磁选工艺将包头白云鄂博中贫氧化矿中的铌有效地富集于强磁中矿。本文还介绍了从强磁中矿浮选回收铌的药剂制度及工艺条件,论述了浮选药剂的主要作用。采用强磁中矿直接浮选铌和强磁中矿先浮选稀土后浮选铌均取得较好指标,得到的铌精矿能满足高炉—转炉—电炉—电炉提铌工艺对原料的要求。     

探讨配矿数学模型提高铁精矿品位

运用多元回归务析法，分析铁矿石采出品位、碎矿抛岩品位和铁精矿品位三者之间的相互关系，并以此为依据，确立配矿数学模型，提出配矿方案。     

影响原地爆破浸出效果的爆堆质量特征及其控制

根据原地爆破浸出工艺特点和硬岩浸出的扩散传质机制，对影响浸出效果的矿石块度、裂隙发育程度(矿石孔隙度)、矿堆孔隙度和矿堆渗透性能等爆破筑堆质量特征作了分析和讨论，确定了筑堆质量要求，并据此提出了质量控制的技术措施。     

凤凰山铜矿选矿过程的自动控制

凤凰山铜矿选矿过程自动控制系统在提高磨机效率，降低浮选药剂消耗，稳定浮选指标等方面发挥了重要作用，本文对此作了全面阐述，指出存在的问题并提出了改进意见。     

矿床学进展与未来趋势

文章讨论了矿床学的理论和应用的研究进展及其发展趋势。矿业企业是矿产资源和经济学结合研究的良好途径。无疑，矿床学与矿产资源经济学的交叉将推动未来相关学科和实践的发展。     

镜铁山铁矿低贫化放矿的初步实践

镜铁山铁矿在Ⅱ号矿体进行了低贫化放矿的现场试验。初步实践表明，试验取得了较好的技术经济指标，在矿石回采率基本不变的条件下可大幅度降低岩石混入率，提高出矿品位。低贫化放矿方法已在全矿推广应用，获得了较好的经济效益。     

降低铀矿加工成本的几项工艺原则

本文提出和论述了降低铀矿加工成本的几项工艺原则:粗、浓、简、返,即浸出矿粒尽可能粗,溶液含铀尽可能浓,工艺过程尽可能简,工艺废水尽可能返。新厂建设、老厂挖革改、新技术和新设备等开发研究,都应遵循这些基本原则。有的对其他湿法冶金行业也是适用的。