提高我国岩金地下开采经济效益的主要途径

本文通过对中国岩金地下开采现状的分析,找出了在采矿方法,损失贫化,选冶技术和工艺设备四个方面与国外的差距,从而提出了四条提高经济效益的途径。     

攀枝花细粒级钛铁矿的浮选

本文简述了以Ｆ９６８为捕收剂、ＳＳＢ和草酸为调整剂,采用浮选流程,在弱酸性（近于中性）矿浆介质中,对攀枝花钒钛磁铁矿选铁尾矿细粒级（０．１００—０．０００ｍ ｍ ）钛铁矿进行的试验研究,以及所获得的高品位高回收率的选钛技术指标。     

内蒙古金陶公司矿石工艺矿物特性研究及对选矿工艺影响的分析

对内蒙古金陶公司矿石进行矿石性质和工艺矿物鉴定研究。目的是从矿石性质方面找出影响选矿指标的因素，以便改进选矿工艺流程，从而保证选矿生产获得较好技术指标。     

甘肃某白钨矿选矿工艺试验研究

对甘肃某白钨矿的矿石性质进行了分析研究,根据物质成分的研究结果和各种矿物的特点,首先进行了预选试验,确定了小型选矿流程试验,进一步进行了扩大连续选矿流程试验研究,最终试验结果为:白钨精矿产率为0.94%,品位WO365.07%,回收率78.18%,细泥白钨精矿产率为0.10%,品位WO332.29%,回收率4.19%。试验结果可以作为建厂设计的技术依据。     

Dicing of hard and brittle materials with on-machine laser-dressed metal-bonded diamond blades

The ultra-precision dicing of hard and brittle materials causes high wear on the abrasive tool which results in the deterioration of blade cross section as well as the decrease of diamond grain exposure. Resin-bonded diamond blades are used due to their in-process self-sharpening capability. Nevertheless, the shape of the blade cross section generated by self-sharpening is random which leads to poor accuracy when precise grooves need to be produced. Metal-bonded diamond blades feature higher tool lifetime and shape accuracy compared to resin-bonded blades, but are not capable of performing self-sharpening. In this study, the laser dressing of metal-bonded diamond blades is investigated to enable their use in the ultra-precision dicing of hard and brittle materials by continuous laser dressing. We investigated laser dressing with and without the presence of cooling water. The sharpness (grain exposure) after dressing is measured by the cutting face surface roughness. The dicing performance is evaluated by observing the dicing results in terms of cutting depth consistency and by monitoring the spindle power during dicing. Dicing blades which have been laser dressed in an environment with coolant feature less grain exposure than dicing blades which have been laser dressed in dry condition. The dicing results show an improvement in the sharpness and durability of laser-dressed dicing blades in comparison with new or conventionally dressed blades. The ability to apply and perform laser dressing on a dicing machine in an environment with coolant shows the feasibility of laser technology for continuous dressing.     

从尾矿中回收金红石的试验研究

某矿山尾矿中金红石的嵌布粒度细,连生关系比较复杂,选别难度较大.本研究采用＂离心-浮选＂流程得到了含TiO2 49.56%、回收率32.71%的金红石粗精矿.     

硫氢化钠常压合成巯基乙酸钠影响因素研究

巯基乙酸钠是辉钼矿选矿中代替氰化物抑制铜矿物的理想药剂,合成巯基乙酸钠的方法有多种,其中硫氢化钠一步法合成文献报道较少,本文在单因素试验的基础上,用P lackett-Burm an试验法对一步法合成巯基乙酸钠的影响因素显著性进行了分析,确定了硫氢化钠常压合成巯基乙酸钠的主要影响因素,从而达到筛选的目的,避免在后期的优化试验中由于因子数太多或部分因子不显著而浪费试验资源。     

大型圆筒混合机的发展及筒体制造技术

简要介绍了国内烧结圆筒混合机的发展概况和武钢４３５ｍ＾３烧结机配套的圆筒混合机的结构特点,分析了国内制造大型圆筒混合机的难点。根据武钢大型圆筒混合机的制造过程,本文系统地归纳了大型圆筒混合机筒体加工制造的工艺方法     

含铜金精矿金铜分离浮选试验研究

针对某黄金冶炼厂现有工艺流程对入选金精矿的要求,进行了金精矿金铜分离浮选试验研究。通过试验研究,确定了合理的金铜分选工艺流程及条件,使高铜金精矿、金精矿达到了现有生产工艺要求。     

加强矿山“三率”管理之我见

矿山生产的开采回收率、采矿贫化率、选矿回收率,是矿产资源开发利用和矿山企业管理的综合质量指标,文中简要介绍这“三率”的定义和计算方法,及加强“三率”指标管理的一点经验。