德兴铜矿废石排放与堆浸筑堆相结合的探讨

本文阐述了德兴铜矿祝家废石场为满足废石排放和堆浸喷淋的双重工艺要求 ,提出了具体的措施和有利于二者的新布局构思     

电石渣—脱硫石膏复合激发充填材料性能及微观结构

针对传统充填材料高碳排放、高成本问题,以“绿色矿山”为理念,选用工业固废电石渣、脱硫石膏和矿渣为胶凝组分,以尾矿砂为骨料制备充填材料。利用X射线（XRD）、扫描电镜（SEM）和能谱分析(EDS)等手段研究充填料水化产物及微观形貌,并开展工作性能、力学性能和重金属固化性能试验。结果表明：所开发的充填材料凝结时间和流动度均满足矿山充填工程要求,充填体7、28 d抗压强度可达4.6、7.9 MPa,充填体浸出液中Pb、Zn浓度低于规定限值。电石渣内的氢氧化钙提供碱性环境,脱硫石膏提供硫酸根离子,两者对矿渣内的硅铝质原料复合激发,生成以钙矾石和C-A-S-H凝胶为主的水化产物。大量针棒状结构的钙矾石晶体及网状结构的C-A-S-H凝胶相互穿插,并且与尾砂颗粒紧密结合,随着龄期延长,结构更加致密,使充填体具有良好的力学性能。     

煤与生活垃圾流化床混烧试验研究

重点介绍煤与城市生活垃圾在１ＭＷ大型流化床焚烧试验台上的试验结果,讨论了与城市生活垃圾焚烧炉相关的污染物质Ｃ１２,ＨＣ１的采样和分析方法,以及１ＭＷ大型流化床焚烧试验台上焚烧城市生活垃圾产生的ＳＯ２,ＮＯx,Ｃ１２,ＨＣ１等污染物的排放结果。     

兰坪金顶矿山泥石流

在实地调查的基础上,对兰坪金顶铅锌矿南大沟及北厂沟泥石流作较全面的介绍和分析。     

有色矿山固态废弃物的应用与治理

指出了我国有色矿山地表固态废弃物亟待治理的严竣形势与重要意义;介绍了有借鉴价值的诸方面实例经验、做法与相关问题,提出改善环保工作的思路与建议.     

塑性混凝土防渗墙在三峡二期围堰中的应用

三峡二期围堰防渗墙最高74m,墙厚0．8－1．1m,防渗总面积83450m2。其中墙深大于40m,采用塑性混凝土,成墙最高月达11188m2。防渗墙经1998年夏季长江8次洪峰考验,堰体渗透比降最大值0．108,小于堰基粉细砂设计允许值0．25;渗水总量约50L／s,小于设计估算基坑渗水总量600L／s,防渗效果显著。     

催化裂化烟气湿法脱硫除尘装置运行情况分析

主要介绍了催化裂化烟气净化（湿法脱硫除尘）项目在中海油惠州石化有限公司1.2 Mt/a催化裂化装置上的运行情况。项目运行效果达到设计指标要求,主要包括污染物排放、能耗和连续排放监测系统指标等。但运行过程中出现外排水悬浮物浓度波动和烟气蓝烟拖尾现象,经过原因分析,通过流程优化、三剂使用和操作调整解决了问题,保证了项目的平稳运行。     

Energy and economic aspects of synthesis gas production from oil sludge and plastic waste

A series of experiments have been performed to investigate the influence of reaction temperature, the equivalence ratio (ER), and blending ratio on the gas composition, tar content and higher heating value (HHV) of synthesis gas. H₂ content decreased from 10.7 to 8.2% in the range of BR while CO and CH₄ increased from 17.4 to 23.1% and 3.4 to 6.3%, respectively. HHV increased with BR and H₂/CO showed an opposite trend. The highest HHV and H₂/CO were obtained at 100%PW and 100%OS, respectively. Tar content increased from 4.8 to 9.5?g/Nm³ with BR increasing in the range because of a reduction in the endothermic nature of volatile combustion.     

Regeneration of waste rolling oil via inorganic flocculation-adsorption process

Waste rolling oil (WRO) can be regenerated by inorganic flocculation-adsorption. Ferric hydroxide (Fe(OH)₃) colloid prepared by the double decomposition reaction of FeCl₃ and NaOH was selected as an inorganic flocculant. Fly ash, activated carbon, clay and silica gel were used as adsorbents to treat the WRO. Effects of different treatment conditions on the performance of the recycled oil were investigated. Results indicated that the recycled oil achieved optimum quality under the following conditions: flocculation time, 6?min; temperature, 60?°C; adsorption time, 20?min; and mass ratios of FeCl₃-to-WRO, NaOH-to-FeCl₃ and fly ash-to-WRO of 0.10, 3 and 0.03, respectively. NaOH combined with Fe(OH)₃ effectively removed most macromolecular impurities, organic acids, lipids, and alcohols. Fly ash exerted the best adsorption rate and adsorption effect. In addition, physicochemical properties of the recycled oils were close to those of fresh oil.