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The industrial test for Lanping lead-zinc oxidation mine was carried out in this paper.The results showed that too low recovery rate of zinc was not induced by the flotation process of oxidation zinc mine,and the key point of solving the problem lied in how to reduce the produce rate of gangues and how to increase the recovery rate of the metals in gangues.The economic benefit of this process was also evaluated,the result showed that the economic benefit was obvious when the ores of Jiaya Mountain were trea...

对兰坪铅锌矿氧化矿进行了500t/d的工业试验研究，结果表明，氧化锌回收率较低的原因并非氧化锌浮选工艺的问题，如何降低矿泥的产率和能否回收矿泥中的金属将是解决兰坪难选氧化铅锌矿的关键所在，同时也对该工艺进行了经济效益评估，采用现行工艺处理架崖山工业矿具有一定的经济效益，在进一步完善现有工艺的基础上，具有一定的应用前景。

The main products of a furnace, lime kiln, gas stoves, smelting, sulfuric acid, flotation, oxidative desulfurization, airway, sewage treatment, Low Noise dust, lasers, air conditioning, ventilation oil depots, grain storage ventilation, food delivery, Coke oven gas, boilers, sintering, Low Noise ventilation series of general-purpose and high temperature, anti-corrosion, explosion-proof, wear-resistant series of special purpose fan, also based on user needs and the design and manufacture the necessary parameters for the fan.

主要产品有化铁炉、石灰窑、造气炉、冶炼、硫酸、浮选、氧化脱硫、气道、污水处理、低噪除尘、激光、空调、油库通风、粮库通风、粮食输送、焦炉煤气、锅炉、烧结、低噪通风等系列一般用途和高温、防腐、防爆、耐磨等系列特殊用途风机，亦可根据用户需要设计制造所需参数及用途的风机。

Amino acids esters and their derivatives, of which the synthesis has rapidly become a new research field in recent years, have been extensively used as medical semi-product, food additives, cosmetic additives, mineral flotation additives, germicides, etc.

氨基酸酯及其衍生物的合成是近年来迅速发展起来的一个新研究领域，它们在医药、化工、食品、农业等方面有着越来越广泛的应用，可用作药物中间体、食品添加剂、化妆品添加剂、矿物浮选剂和杀菌灭虫合剂等，应用前景十分广阔。

Amino acids esters, of which the synthesis has rapidly become a new research field in recent years,have been extensively used as medical semi-product,food additives, cosmetic additives, mineral flotation assitives,germicides,etc.

氨基酸酯的合成是近年来迅速发展起来的一个新研究领域，它在医药、化工、食品、农业等方面有着越来越广泛的应用，可用作药物中间体、食品添加剂、化妆品添加剂和杀菌灭虫合剂等，应用前景十分广阔。

Our independent research and development "far-infrared high-purity anion-additive" is used at home and abroad ,it is a high-grade functional stones ore, after artificial selection, crushing, magnetic separation, flotation, net Shui election process, such as multi-channel processing, scientific formula further purification Ultrafine processing.

我们自主研发的&高纯负离子远红外多功能添加剂&是选用国内外高品位功能性宝石级矿石，经过人工精选、破碎、磁选、浮选、水净选等多道工艺处理后，经科学配方再进行提纯超细加工。

Our independent research and development "far-infrared high-purity anion-additive" is used at home and abroad ,it is a high-grade functional stones ore, after artificial selection, crushing, magnetic separation, flotation, net shui election process, such as multi-channel processing, scientific formula further purification ultrafine processing.

我们自主研发的&高纯负离子远红外多功能添加剂&是选用中国外高品位功能性宝石级矿石，经过人工精选、破碎、磁选、浮选、水净选等多道工艺处理后，经科学配方再进行提纯超细加工。

In this paper, the flotation rule and behavior of kyanite一group polymor-phous minerals were studied in modified Hallimond tube in detail,Further-more, the energy change of collector/mineral systems before and after ad-sorption and the net charge densities of the atoms on the minerals surfaceswere calculated by use of quantum chemistry ,The flotability of the mine-rals was successfully explained.

进一步应用量子化学CNDO／2法计算了捕收剂在矿物上吸附的能量变化和矿物表面原子的电荷分布密度，并根据量子化学计算结果成功地解释了蓝晶石类同质异相矿物的浮选规律。

The application of flotation for the removal of humic compounds was investigated by using it as a possible post-treatment process of simulated landfill leachates after biological treatment.

生活垃圾渗滤液经生物法处理后含有较多的难降解腐殖质，为此开展了利用浮选法去除渗滤液中腐殖质的后处理研究，并考察了影响浮选效率的主要因素。

The results show that:(1) there are effects of magnetic treatment on mineral flotation. Using oleic acid as collecting agent, magnetic treatment makes hematite productivity raise, and quartz productivity drop.

此外，利用磁化处理来改变水的性质进而改善浮选效果，有助于了解液相性质的变化对矿物可浮性的影响，从而更深刻更全面地认识和掌握浮选过程的基本规律。

After being oxidated for 34 h, and then the contents of Fe2+ in the 9K liquid solution with 4×10-4mol/ L xanthates, dithiophosphates and D-250 added inreased from 4.03 g/L to 4.64, 4.77 and 5.91g/L, respectively. After leaching for 35 d, the leaching rates of Zn are 92% and 61% respectively. It shows that the flotation reagents (xanthates, D-250) have great effect on the activity of bioleaching bacteria.

研究结果表明：添加4×10-4mol/L的丁基醚醇、乙基黄药、丁胺黑药，氧化34 h后，使 K液体培养基中的Fe2+质量浓度由4.03 g/L分别增加至4.64 g/L， 4.77 g/L和5.91 g/L；浸出35 d后，精矿中的浸出率分别为92%和61%，这进一步验证了浮选药剂对浸矿细菌活性的影响。

I hope that this success is just the first in a long series.

我希望这只是成功的开始。

Three dimensional stresses on the interface of tire and soil, tire deflection and soil sinkage are measured.

测试轮胎——沙土界面上的三向应力、轮胎变形和沙土沉陷；建立考虑剪切应力对沙土承载特性产生影响的车轮牵引性能预测模型；分析车轮作用下土壤的纵向稳定性。