东乡铜矿的环保综合治理

介绍东乡铜矿井下水的治理和综合利用、井下废石的处理以及选矿尾砂的综合应用 ,井下高温毒气的治理、尾矿坝的复土植被并继续为生产服务等环保综合治理情况。     

三(4-氨苯基)硫代磷酸酯的研制

介绍了以对乙酰氨基酸和王氯硫磷为原料合成三（4-异氰酸酯苯基）硫代磷酸酯[德士模都RF的前两步（酯化和水解）]的方法。     

二连裂谷系下白垩统烃源岩成油模式

二连裂谷系是由50多个断陷组成,它们在相同的区域构造作用下,既有相似断陷演化史和相似构造发展史,又有独立的沉积单元和明显的外在可分性,各个断陷生油气潜力和油气富集程度相差极其悬殊.文中用裂谷盆地形成及演化的观点系统分析了断陷群的油气生成规律,总结出下白垩统的成油模式,指明二连裂谷系的勘探方向.     

Primary processing of chromite ores and ore-preparation of wastes for production of refractory materials

Chromite ore dressing technology is developed to take into account mineralogical, petrographic, and physicochemical features of raw material and its components. A possibility is shown for complex use of mineral resources of chromite deposits by improving the quality of ore-dressing wastes and intermediate products being a raw material for refractories, foundry sand, and antiburning-on paint.Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 98–106, July–August, 2004.     

A comparison of methods for measuring the effect of level of application on the relative effectiveness of two fertilizers

The effectiveness of a slowly soluble source of phosphate relative to a soluble source may decrease with increasing levels of application. This may cause yields to approach a lower asymptote. Four methods for measuring this effect are compared using field experiments in which a calcined rock phosphate (Calciphos) was compared with superphosphate for growth of subterranean clover. The methods were: subjective estimates using a hand drawn calibration curve; objective estimates using a fitted calibration curve; objective estimates using the fit of separate response curves; and objective estimates from the fit of a common response surface in which relative effectiveness was related to level of application. The role of these four methods differs. The first method, though often informative, is suitable only for an initial inspection of the data. The other three methods may all be useful for analysis but the fourth method was the most general. It gave the most sensitive statistical test and had the further advantage that it was a direct test of the hypothesis. All four methods showed that the relative effectiveness of Calciphos decreased with increasing levels of application.     

小官庄铁矿软岩微观特性的实验室研究

本文通过对小官庄铁矿软岩的物化试验，全面分析了软岩的微观特性，得出了该矿主要存在两大类软岩：一类是以富含蒙脱石为特征的具有中一强膨胀的软宕；另一类是富含绿泥石或不含粘土矿物的节理化软岩，不存在膨胀性。在上述分析的基础上，并对软宕的微观特性进行了详细的实验室研究，从而为该矿此类软岩的支护提供了依据。     

The effect of clay on gypsum filterability in the nitrophosphate process

The influence of clay added to Khouribga phosphate rock during the dissolution with nitric acid in the nitrophosphate process, upon the filterability of gypsum (calcium sulphate dihydrate) was studied. The precipitation of the acidulate with an aqueous ammonium sulphate containing solution was investigated in a continuously operated bench scale reactor system. It was found that the filtration time of a gypsum-crystals-containing filter cake with a height of 50 mm could be reduced by up to a factor of 5 by adding approximately 0.5 percent by weight clay in relation to the amount of phosphate ore. Based on our experiments we can calculate that the addition of clay in the range 0.4–3 percent by weight to the phosphate ore can increase the production capacity of a rotary tilting-pan filter system for separation of the gypsum from the mother liquor by more than a factor of two. Moreover because in this range of clay concentrations the capacity becomes almost constant we may conclude that for this system the production capacity is relatively insensitive to fluctuations in the clay dosage system.     

料浆法磷铵的发展和展望

自 2 0世纪 80年代以来 ,经实验室研究、中间试验、工业示范与大型化等关键性技术的研究开发 ,磷铵单系列生产能力由 30kt/a发展到 2 0 0kt/a ,全国已建成近 30 0 0kt生产规模。从基础理论研究与发展、生产技术的开发、设备的研制与开发介绍料浆法磷铵的发展历史与现状 ,并对未来发展中的若干问题提出了建议     

Morphology and corrosion resistance of composite coatings obtained by phosphating and molybdate post-sealing on galvanized steel

The phosphated hot-dip galvanized （HDG） sheets were post-sealed with sodium molybdate solution to improve the corrosion resistance of phosphate coatings. The morphology, chemical composition and corrosion resistance of the coatings were investigated using scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDS）, Tafel polarization measurements and neutral salt spray （NSS） tests, and were compared with those of the single coatings. The results show that post-sealing the phosphated HDG steel with molyhdate solution, the pores among the zinc phosphate crystals are sealed with molybdate films containing Zn, P, O and Mo, and the continuous composite coatings are formed. The suppression of both the anodic and the cathodic processes of zinc corrosion on the samples are enhanced significantly. The synergistic corrosion protection effect of the single phosphate coatings and molybdate films for zinc is evident. The corrosion resistance of the composite coatings increases with phosphating time up to 300 s.