莺歌海盆地新近纪以来古构造地貌恢复

新近系三亚组和梅山组是莺歌海盆地烃源岩发育的重要层系,研究其古构造地貌是预测烃源岩分布和油气资源潜力的基础。应用"构造应力体制保持不变的情况下,盆地内古构造地貌继承性发育"的思想,在确定莺歌海盆地新近纪构造变形应力体制及其演化的基础上,应用"将今论古"和"比例补偿"的思想和方法,分别以盆地现今地貌特征和地层厚度分布为基础资料,并以单井资料确定局部古海水深度作为约束条件,恢复莺歌海盆地新近纪的古构造地貌(古海水深度)。指出莺歌海盆地在三亚组和梅山组沉积时期是半封闭的局限海湾环境,有利于烃源岩的发育;提出古构造地貌研究的新方法——比例补偿法,可应用于其他盆地古构造地貌的恢复。     

Fabrication and photocatalytic performance of one-dimensional Ag3PO4 sensitized SrTiO3 nanowire

The 1D Ag₃PO₄ sensitized SrTiO₃ nanowires are prepared by simple route of electrospinning-in situ deposition technique. The results of the thermogravimetry (TG), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive Spectrometer (EDS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and UV–Visible diffuse reflectance spectroscopy (UV–Vis) indicate that the Ag₃PO₄ nanoparticles has been deposited on the surface of the SrTiO₃ nanowires successfully. Experimental results showed that compared with pure SrTiO₃, the as-prepared 1D Ag₃PO₄ sensitized SrTiO₃ nanowires exhibit obvious enhancement of photocatalytic performance and stability. Especially, the Ag₃PO₄/SrTiO₃ (3AS sample) had a satisfactory photocatalytic activity for degrading methylene blue (MB) more than 98% under visible light irradiation. As to pure SrTiO₃ and Ag₃PO₄, only 9.8% and 49% of MB was decomposed after 35?min irradiation respectively. Furthermore, the mechanism of the enhancing photocatalytic activity could be ascribed to the nano-heterojunction of the Ag₃PO₄/SrTiO₃, the visible light response of the Ag₃PO₄, and the 1D structure of the nanowires.     

废弃钻井液不落地处理冬季低温生产保障方案设计

针对废弃钻井液不落地处理冬季施工过程中存在钻井液冻凝,设备停机后启动困难,压滤机液压系统油管线温度低、流动性差导致的控制动作缓慢或失灵,钻井液罐与地面冻结无法搬运,钻井设备卫生清洁困难等难题,从废弃钻井液处理方式、油田所在区域、钻井周期等实际情况出发,设计切实可行的冬防保温方案,确保冬季施工设备灵活好用、管线畅通、废弃钻井液无冻凝,保证废弃钻井液不落地处理有序进行。该方案在大庆油田、冀东油田等多口井应用,实践效果良好,解决了因废弃钻井液不落地处理冬季施工过程中钻井液冻凝、设备故障而造成的钻井延误问题。     

综合物探手段在前道矿山勘查中的应用

介绍了高精度磁法测量和高密度电阻率法测量的原理,并将其应用在前道矿山勘查中。通过对数据解译圈定构造断裂两条,为矿区深部找矿提供了指导。为下一步勘探工作提供了依据。     

无人机在露天矿方量计算中的应用

随着社会的不断发展,人们越来越重视露天矿的测绘工作。尤其是最近几年,无人机技术不断成熟,工程技术人员可以利用无人机进行露天矿方量计算,从而保证勘测工作的准确性与高效性。本文主要围绕无人机技术的相关概述进行分析,探讨利用无人机进行露天矿方量计算的有效途径,从而为相关技术人员提供一定的理论参考。     

Low shear rheological behaviour of two-phase mesophase pitch

The low shear rate rheology of two phase mesophase pitches derived from coal tar pitch has been investigated. Particulate quinoline insolubles (QI) stabilised the mesophase spheres against coalescence. Viscosity measurements over the range 10–10⁶ Pa s were made at appropriate temperature ranges. Increasing shear thinning behaviour was evident with increasing mesophase content. At low mesophase contents the dominant effect on the near Newtonian viscosity was temperature but at higher contents it was the shear rate; temperature dependence declined to near zero. The data indicated that agglomeration could be occurring at intermediate mesophase volume fractions, 0.2–0.3. The Krieger–Dougherty function and its emulsion analogue indicated that in this region the mesophase pitch emulsions actually behaved like ‘hard’ sphere systems and the effective volume fraction was estimated as a function of shear rate illustrating the change in extent of agglomeration. At the higher volume fractions approaching the maximum packing fraction, which could only be measured at higher temperatures, the shear thinning behaviour changed in character and it is considered that this is possibly due to shear induced deformation and breakup of dispersed drops in the shear field.     

噻吩与小分子间弱相互作用的理论研究

在B3LPY/6-311+G**水平上计算了噻吩与NH3、H2O和HF形成的复合物的结构、能量及氢键关键点处电荷密度拓扑性质。结果表明,噻吩与NH3形成两种弱C-H…N氢键;N被O取代后,除C-H…O氢键外,形成更稳定的O-H…π结构;F取代O时形成强度更大的F-H…S和F-H…π氢键,这表明典型的氢键在电负性较小的分子复合物中较为普遍;在电负性较大的分子复合物中,小分子更倾向于从噻吩平面上方接近噻吩,形成其他类型的氢键和X-H…π氢键。氢键关键点处的电荷密度拓扑性质结果表明,这些氢键强度较弱,为闭壳层相互作用。本文结论为噻吩类超分子功能材料体系的设计和合成提供一定的指导。     

融合大数据技术和工艺经验的高炉参数优化

 为了更精准地评判高炉运行情况，量化高炉指导方针。根据高炉生产过程的特点，应用大数据技术对高炉生产参数与铁水产量和高炉能耗等指标进行数据驱动分析，提出了一种优化高炉生产参数的新方法。首先，对某钢铁厂高炉各工序历史数据进行了采集、清洗、过滤和整合，建立了高炉数据仓库。然后，将多种聚类算法相结合，完成了对高炉炉况变化的详细划分。运用工艺经验与递归特征消除算法相结合，全面筛选得到能够反映炉况波动的强相关变量。应用统计学方法分析得出Class_a炉况对应的核心参数的最优范围，这对指导现场生产、保持高炉长期稳定顺行具有重要意义。     

柏泉磷铁矿石可选性研究

为了给柏泉铁矿现场磷、铁回收工艺优化提供数据基础,对该含磷铁矿进行了系列可选性试验研究。结果表明:适宜的一段、二段磨矿细度-0.074mm含量分别为40%和85%,进行两段磨矿和三段弱磁选可获得TFe品位64.25%、回收率50.47%、P2O5含量仅为0.03%的铁精矿;选铁总尾矿在捕收剂用量600g/t、水玻璃用量400g/t的条件下,进行1粗3精2扫闭路浮选,可获得P2O5品位30.74%、回收率72.94%的磷精矿。本研究为选厂工艺参数优化提供了数据支持和技术指导。     

低钛高炉渣应用于HRB400E螺纹钢100t LF精炼的工业试验

采用喷吹CO₂法对低钛高炉渣进行脱硫处理，低钛高炉渣中硫的脱除率为66.59%~78.01%，渣中残硫含量为0.137%~0.283%，所制备的低硫低钛高炉渣中硫含量基本满足HRB400E钢LF精炼渣要求。低硫低钛高炉渣LF精炼终渣成分为/%:37.40~46.50CaO，12.30~15.10MgO，21.70~26.70SiO_2，5.74~17.00Al₂O_3，2.44~3.39TiO_2，0.36~1.42MnO，0.75~1.62Fe₂O_3，0.200~0.597S，钢水脱硫率为10.0%~41.5%，HRB400E钢终点[S]为0.008%~0.029%，与现工艺精炼渣（折渣和钢包渣终渣成分/%:34.30~42.90CaO，13.60~18.10MgO，24.00~26.50SiO_2，4.88~11.00Al₂O_3，0.71~1.12TiO_2，0.47~1.47MnO，0.81~1.72Fe₂O_3，0.245~1.132S）的脱硫效果相当（HRB400E钢终点[S]0.027%~0.032%）。