木片筛余物高得率半化学法清洁制浆技术研究

以太阳纸业备料车间木片筛选碎料（筛余物）为原料，对其烧碱法半化学制浆的实验室工艺和生产试验进行了研究。结果表明，筛余物采用半化学法制浆可获得较高得率和环压强度的纸浆，且用碱量对纸浆性能有显著影响。相对8%NaOH （相对于绝干原料）化学预处理，采用14%NaOH化学预处理结合两段浆浓22%的高浓磨浆工艺，所制半化学浆抄造浆张的裂断长和环压指数分别达2.89 km和9.76 N·m/g，是前者的1.9倍和1.2倍，而且优于现用国内OCC废纸浆抄造浆张；生产试验得到的浆张性能指标与实验室相吻合，其中紧度和环压强度分别达到GB/T 13023—2008瓦楞芯（原）纸AA级和A级优等品要求。     

DETERMINATION OF SLUDGE COMPOST QUALITY BY BIOASSAY

The paper reports the progress on a plant germination and growth trial as part of Thames Water's quality-control procedure for sludge composting and recycling. The experiment was conducted by cultivating two types of plants in a greenhouse under controlled environmental conditions, using (a) standard peat-based multipurpose compost, (b) Terra Eco Systems multipurpose compost, and (c) woodchip-amended sludge compost.
Tomatoes and petunias were selected for the trial, and the varieties were first-generation (F) hybrid. Germinated seed counts were used to calculate germination percentages and germination values, to assess compost performance. Calculated germination values for tomato and petunias were 26.52 and 17.76 respectively for the peat-based compost: the values of tomato plants for Woodchip-amended compost and Terra Eco compost were 17.80 and 11.84 respectively; and for petunia, all composts performed similarly, with germination values ranging from 14.00 to 17.76. It was concluded that there were no significant differences between the petunia plants in three composts used in this trial.     

卷烟机剔除梗签物中烟丝在线分离回用装置的设计与应用

为解决现有卷烟机剔除梗签物中烟丝集中收集方式存在的烟丝降级使用问题,设计了烟丝连续在线回用装置.烟丝在线分离回用装置设在卷烟机剔梗装置后身,通过塔式分离器实现烟梗、烟丝的一次分离,再利用旋风分离器实现烟丝、烟末的二次分离.分离出的烟丝直接落入卷烟机的回烟丝振槽内,烟丝水分和香气散失少.应用表明,该装置安装方便,适用范围广,可用于各种机型的卷烟机,能够在线回收和利用卷烟机剔除梗签物中85%以上的烟丝,显著降低卷烟机的烟丝消耗,提高企业经济效益.     

建筑物下浅埋厚煤层长壁矸石充填开采试验

针对阳泉东坪煤矿建筑物下压煤多、埋藏较浅的特点,基于综合机械化长壁矸石充填工艺技术,提出了间歇分层长壁矸石充填开采采出建筑物下压煤的技术途径。在分析长壁矸石充填开采沉陷控制机理的基础上,利用等价采高的概念设计了试验区分层开采厚度分别为3.1和3.0 m,并对方案进行了地表沉陷预计。结果表明,第1分层开采后地表的移动变形值均在设防标准之内;第1分层开采稳定后,对建筑物进行简单的维修和加固,可进行下一分层开采,地表移动变形仍在设防标准之内,为该矿井最大限度地解决建筑物下压煤问题提供了一种安全、经济的合理开采方法。     

孙村煤矿矿井废弃物处理及综合利用

为降低孙村煤矿开采对环境的污染,充分利用地热,采用水源热泵机组取代传统的燃煤锅炉,满足了冬季立井井口、生产车间和办公室的采暖要求;矿井废水经净水器、石英砂过滤器、活性炭过滤器、反渗透设备处理后,矿井水质达到国家Ⅰ类饮水标准;采用仰斜似膏体充填开采技术,将水泥、粉煤灰、煤矸石加水配制成质量分数72%～75%的胶结充填料浆,在采场进行充填,整个充填系统的充填能力达到100～120m3/h,提高了煤炭资源采出率,减少了地面矸石山。以上措施不仅显著改善了地面环境,而且实现了能源的再利用。     

尾矿氧化锌脱氯试验研究

进行了尾矿氧化锌脱氯试验研究 ,随着生石灰加入量的增加脱氯率则下降 ,而且不同程度造成设备堵塞。用镉粗炼碱渣作中和剂脱氯率高 ,反应速度快 ,同时可完善原有工艺     

Concentrator silicon solar cells from silicon industry rejects

Two types of silicon (Si) substrates (40 n-type with uniform base doping and 40 n/n⁺ epitaxial wafers) from the silicon industry rejects were chosen as the starting material for low-cost concentrator solar cells. They were divided into four groups, each consisting of 20 substrates: 10 are n/n⁺ and 10 are n substrates, and the solar cells were prepared for different diffusion times (45, 60, 75 and 90 min). The fabricated solar cells on n/n⁺ substrates (prepared with a diffusion time of 75 min) showed better parameters. In order to improve their performances, particularly the fill factor, 20 new solar cells on n/n⁺ substrates were fabricated using the same procedure (the diffusion time was 75 min)—but with four new front contact patterns. Investigation of current–voltage (I–V) characteristics under AM 1.5 showed that the parameters of these 20 new solar cells have improved in comparison to previous solar cells' parameters, and were as follows: open-circuit voltage (V_OC=0.57 V); short circuit current (I_SC=910 mA), and efficiency (η=9.1%). Their fill factor has increased about 33%. The I–V characteristics of these solar cells were also investigated under different concentration ratios (X), and they exhibited the following parameters (under X=100 suns): V_OC=0.62 V and I_SC=36 A.     

废纸脱墨及其相关问题

简要回顾了脱墨方法、脱墨剂、脱墨过程中造成的胶粘物问题、脱墨废水废渣处理以及脱墨效果的评价方法     

Ferrite grade iron oxides from ore rejects

Iron oxyhydroxides and hydroxides were synthesized from chemically beneficiated high SiO₂/Al₂O₃ low-grade iron ore (57.49% Fe₂O₃) rejects and heated to get iron oxides of 96–99.73% purity. The infrared band positions, isothermal weight loss and thermogravimetric and chemical analysis established the chemical formulas of iron-oxyhydroxides as γ-FeOOH.0.3H₂O; α-FeOOH.0.2H₂O and amorphous FeOOH. The thermal products of all these were α-Fe₂O₃ excepting that of γ-FeOOH.0.3H₂O which gave mainly γ-Fe₂O₃ and some admixture of α-Fe₂O₃. The hydrazinated iron hydroxides and oxyhydroxides, on the other hand, decomposed autocatalytically to mainly γ-Fe₂O₃. Hydrazine method modifies the thermal decomposition path of the hydroxides. The saturation magnetization,J _s, values were found to be in the range 60–71 emu g⁻¹ which are close to the reported values for γ-Fe₂O₃. Mechanism of the γ-Fe₂O₃ formation by hydrazine method is discussed.     

OCC废纸制浆废渣处理系统及资源化利用

叙述了OCC废纸制浆废渣的组成,详细介绍了废渣处理中压榨脱水、破碎、铁性金属分离、非铁性金属分离、震动分离及近红外分选等操作工序,对水力碎浆机绞绳处理、转鼓碎浆浆渣处理及轻渣处理流程进行了分析介绍,讨论了最终分选废渣的末端资源化处理方法。