软锰矿在辉钼矿焙烧过程中的固硫作用

为克服辉钼矿传统焙烧-氨浸工艺中含硫烟气对环境的严重污染, 提出联产钼酸铵和硫酸锰的软锰矿与辉钼矿共同焙烧新工艺, 并从热力学角度和通过热重分析等手段在理论上论证该新工艺的可行性. 根据焙烧产物的性质, 设计了软锰矿和辉钼矿共同焙烧新工艺的工艺流程, 采用分段升温焙烧, 研究了辉钼矿与软锰矿的物料配比对固硫率的影响. 研究结果表明: 加入软锰矿可以显著降低辉钼矿的焙烧温度, 在450～550 ℃时, MoS2的分解率可达100%, 产物以MnMoO4为主;焙烧过程中的固硫率随着MnO2含量增加而升高, 固硫效果非常明显, 当n(MnO2):n(MoS2)=9时, 固硫率接近98%.     

摩擦电法布袋除尘器检漏仪

研究了灰尘浓度实时在线检测的摩擦电测量方法，推导了灰尘颗粒与管壁磨擦产生的电流与灰尘含量、气体平均流速以及灰尘颗粒直径间的关系。设计了磨擦电法布袋除尘器检漏仪，实验室实验表明，该检漏仪能够实现准确报警。     

高硫煤浮选脱硫抑制剂的研究

在选择适合高硫煤特点抑制剂的基础上，在浮选过程中添加抑制剂，以达到浮选脱硫的目的。同时讨论各种抑制剂对浮选精煤产率、降硫率、灰分、完善指数的影响。结果表明，在所选浮选抑制剂中以石灰的效果最为理想。     

沉积喷流型矿床热水沉积旋回及其地球化学特征

银洞子硫化物多金属矿床为一沉积喷流型矿床,后期叠加改造作用较弱,比较完整地保存了热水同生沉积特征,构成完整记录喷溢热水流体活动的演化序列,是盆地古流体研究的理想天然实验室。矿区内热水沉积体在纵向上由于热水沉积岩层厚变化形成的一系列小的韵律层,组成一个热水沉积层厚从小—大—小的完整旋回结构层。该旋回结构层可以分为3部分:下部为含闪锌矿纹层碳质千枚岩;中部为以13号主矿体为代表的条带状富矿体;上部为含方铅矿纹层的铁白云质千枚岩。反映了热水喷溢沉积作用完整演化序列。热水沉积旋回岩石中Al2O3,MgO,Na2O,K2O含量以及(Fe+Mn)/Ti,SiO2/Al2O3,SiO2/MgO,SiO2/K2O比值等均表现出相似的旋回式变化特点。     

The genesis of H2S in the Weiyuan Gas Field, Sichuan Basin and its evidence

The Sinian Dengying Formation gas pool in Weiyuan is the oldest large-scale sulfur-bearing gas field in China, which has a H2S content ranging from 0.8% to 1.4%. The Cambrian Xixiangchi Formation gas pool discovered recently above the Dengying Formation contains gas geochemical behaviors similar to those of Dengying Formation but different in sulfur isotopes of H2S. Investigations show that though these two Sinian and Cambrian gas pools are separate ones, they share the same Cambrian source rock. The higher dry coefficient, heavier carbon isotopes, sulfur isotopes of sulfide, lower filling of gas pools, formation water characteristics, reservoir properties and H2S distribution, indicate that H2S in both the Sinian and Cambrian gas pools originates from TSR. The sulfur isotopes of sulfates have shown that H2S was formed in respective pools, namely hydrocarbons charged into the pools reacted with the Dengying Formation and the Xixiangchi Formation gypsum （TSR）, respectively, to form H2S. Compared with sulfur isotopes of sulfates in each pool, δ^34S values of H2S are 8‰ lighter for the Dengying Formation pool and 12‰ lighter for the Xixiangchi Formation pool, respectively, which is attributed to the difference in temperatures of TSR occurrence. The reservoir temperature of the Xixiangchi Formation pool is about 40℃ lower than that of the Dengying Formation pool. Temperature plays a controlling role in both the sulfur isotopic fractionation and amounts of H2S generation during TSR.     

基于食品生产的二氧化硫降解装置的研究

介绍了一种二氧化硫降解装置的结构组成、工作过程、操作控制、操作使用有关参数要求及其在解决水产品或其他食品中二氧化硫残留问题上的应用,结合臭氧技术,对二氧化硫降解装置进行了比较深入的研究及探讨,并研制出了具有较广应用性的特殊装置。根据实际检测结果,该装置具有很好的实效性。     

煤粉粒径对微波脱硫过程的影响

采用穆斯堡尔谱学方法分析不同粒径的煤粉在微波辐照下各煤样中黄铁矿向磁黄铁矿转变的效果，结果表明颗粒粒径越小，在微波照射下黄铁矿向磁黄铁矿转化的程度就越高，粒径最小的煤样黄铁矿几乎完全转化，煤样中黄铁矿向磁黄铁矿的高转经率为利用强磁场脱硫提供了前期条件。     

提高H2O2/甲酸体系选择性氧化抽提脱硫效率的研究

为了降低焦化蜡油(CGO)-甲酸／H2O2选择性氧化体系中H2O2的无效分解速度，屏蔽重金属离子对H2O2分解的催化效应，考察了造纸行业中常用的硅酸钠、硅酸镁和乙二胺四乙酸(EDTA)等稳定剂和螯合剂的加入对有机溶剂抽提后CGO中含硫量的影响。实验结果表明，EDTA可以很好地和重金属离子螯合，氧化后CGO抽余油中硫含量大幅降低。     

脆硫铅锑矿精矿的还原造锍熔炼

采用富含氧化铁的黄铁矿烧渣作为固硫剂的铅、锑、铋还原造锍熔炼方法,对脆硫铅锑矿精矿还原造锍熔炼的工艺进行了研究,考察了温度、添加剂加入量、烧渣加入量等对还原造锍熔炼工艺的影响,得出最佳工艺条件为:先在900℃下反应,再升温到1200℃过热放渣;烧渣加入量为理论量的100%～105%;添加剂与苏打质量比为10%,无水硫酸钠为13%(质量分数).在最佳条件下,锑直收率为83.26%,铅直收率为68.50%,固硫率为98.97%,但约有15%的铅和30%的银分散在铁锍中.     

Sulfur and carbon isotopic variations in Neoproterozoic sedimentary rocks from southern China

A new set of δ34Ssulfide, δ34Ssulfate and δ13Ccarbonate values has been reported from Neoproterozoic sedimentary rocks in southern China. The interglacial black shales of the Datangpo Fm. display higher δ34Ssulfide values with >+20‰ average, but the postglacial black shales from the Doushantuo Fm. show negative δ34Ssulfide values. However, the Jinjiadong Fm., the same post-glaciation as the Doushantuo Fm., has positive δ34Ssulfide values, implying that the δ34S value of sedimentary sulfides would be controlled by lithofacies and paleogeographic environments. The δ34Ssulfate values relative to δ13Ccarbonate were obtained by extraction of trace sulfate from the successive carbonate sequences in the Yangtze Gorges sections. A preliminary interpretation suggests that the oceanic environment may fluctuate dramatically at the post-glacial Doushantuo stage and, then, recover its stability at the Dengying stage on the basis of the high resolution δ34S and δ13C curves of seawater.