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Investigation on the copper content of Matte Smelting Slag in Peirce-Smith converter

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Journal of University of Science and Technology Beijing 2001年第3期8卷 177-181页

作者： Chunlin Chen, Jiayun zhang, Meng Bai, Shoukun Wei Metallurgy School, University of Science & Technology Beijing, Beijing 100083, China Guixi Smelter, Jiangxi copper co. Ltd., Jiangxi 335424, China Metallurgy School Univ. of Sci. and Tech. Beijing Beijing 100083 China

The copper contents and its existing forms in the slags during the slag-making stage of Peirce-Smith converters in Guixi Smelter, Jiangxi Province, China have been investigated. The investigation was based on plant trials with the corresponding thermodynamic calculations and kinetic considerations. From the plant data, the total copper content in the slags was in the range of 2% to 8% (mass fraction). The mechanical entrainment of matte drops has been found to be the main cause of the copper loss. The suspension index, defined as the ratio of the mass fraction of copper in suspended matte drops in the slag to that in bulk of the matte phase, has been adopted to quantify the matte entrainment. The values of this parameter estimated in this work have been found mainly within a range of 2.5%-8.0%. The Fe3O4 content in the slag has been estimated to be the most important factor, among others, influencing the separation of slag with matte and, consequently, the copper loss from the slag.

关键词： Peirce-Smith converter copper content molten slag

软硬件协同的RapidIO接口带宽测试方法

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现代电子技术 2025年第1期48卷 163-167页

作者：刘淑涛张宗森魏璇张卜方中华通信系统有限责任公司河北分公司河北石家庄050081 中国电子科技集团公司第五十四研究所河北石家庄050081 西安电子科技大学陕西西安710071

RapidIO是一种高性能嵌入式系统互联技术。FPGA的SRIO控制器实现了RapidIO二代协议,在工程中经常需要得到其实际带宽性能以确定其是否满足应用需求。采用FPGA的嵌入式软核,配合FPGA内部硬件电路可搭建软硬件协同SOPC测试系统。该系统既... 详细信息

RapidIO是一种高性能嵌入式系统互联技术。FPGA的SRIO控制器实现了RapidIO二代协议,在工程中经常需要得到其实际带宽性能以确定其是否满足应用需求。采用FPGA的嵌入式软核,配合FPGA内部硬件电路可搭建软硬件协同SOPC测试系统。该系统既具有硬件可裁剪、可定制、扩展性强的特点,又具备软件灵活性的特点。此系统在硬件层面设计了周期采样单元、周期配置接口、锁存接口、上传接口;软件层面具备采样参数配置、采样控制、采样数据分析、结果呈现功能。通过软硬件代码的编写和验证,表明此方法可实时监测接口的带宽及抖动性能指标。

关键词： RapidIO 嵌入式软核 SOPC 带宽测试抖动 AXI-Stream接口

Integrated Wireless communication System Using MANET for Remote Pastoral Areas of Tibet

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China communications 2016年第4期13卷 49-57页

作者： HUANG Cao ZHOU Qing zhang Dongchen School of Information Engineering Xizang Minzu University International school Beijing University of Posts and Telecommunications China Mobile Group Design Institute co. Ltd.

To reduce the network deployment cost and provide voice, message and low rate data services in remote pastoral areas of Tibet effectively, an integrated wireless communication system utilizing MANET(Mobile Ad hoc Network) is proposed. The sparse mobile devices, assisted with the solar-powered multi-functional standing stations mainly on networking maintenance and routing arrangement, self-organize into a MANET. The topology of the standing stations is designed for networking robust and to simplify the routing method and energy strategy. Then in the OMNe T++(Objective Modular Network Test bed in C++) simulation, the energy consumption is analysis while adjusting routing with the different energy status of the standing stations. The result shows that the standing stations should adjust routing as well as control the mobile devices' activity level according to the energy states of the standing stations and their adjacent mobile devices.

关键词： wireless communication system OMNeT++ MANET Tibet

Implementation of New Lead-Free Technologies

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Implementation of New Lead-Free Technologies

control of facies/potential on hydrocarbon accumulation:a geological model for lacustrine rift basins

2003年全国电子电镀学术研讨会

作者： Enthone co.Yun zhang

The electronic industry has begun the conversion from tin-lead to lead-free solders;For component finishes, tin/lead finishers(such as 80/40 and 90/10 tin/ lead) will be replaced by lead-free finishes such as pure tin,tin bismuth and tin *** to say,pure tin is the simplest and most cost,effective replacement. However,tin bismuth and tin copper are playing a significant role in niche applications such as lead frames and wafer bumping.

关键词：

来源： cnki会议评论

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Petroleum Science 2008年第3期5卷 212-222页

作者： Chen Dongxia Pang Xiongqi zhang Shanwen Wang Yongshi zhang Jun Key Laboratory for Petroleum Formation Mechanisms of the Ministry of Education China University of PetroleumBeijing 102249 China SINOPEC Shengli Oilfield co. Dongying Shandong 257000 China

The formation and distribution of hydrocarbon accumulations are jointly controlled by ＂stratigraphic facies＂ and ＂fluid potential＂, which can be abbreviated in ＂control of facies/potential on hydrocarbon accumulation＂. Facies and potential control the time-space distribution of hydrocarbon accumulation macroscopically and the petroliferous characteristics of hydrocarbon accumulation microscopically. Tectonic facies and sedimentary facies control the time-space distribution. Lithofacies and petrophysical facies control the petroliferous characteristics. Favorable facies and high porosity and permeability control hydrocarbon accumulation in the lacustrine rift basins in China. Fluid potential is represented by the work required, which comprises the work against gravity, pressure, interfacial energy and kinetic energy. Hydrocarbon migration and accumulation are controlled by the joint action of multiple driving forces, and are characterized by accumulation in the area of low potential. At the structural high, low geopotential energy caused by buoyancy control anticlinal reservoir. The formation oflithological oil pool is controlled by low interfacial energy caused by capillary force. Low compressive energy caused by overpressure and faulting activity control the formation of the faulted- block reservoir. Low geopotential energy of the basin margin caused by buoyancy control stratigraphic reservoir. The statistics of a large number of oil reservoirs show that favorable facies and low potential control hydrocarbon accumulation in the rift basin, where over 85% of the discovered hydrocarbon accumulations are distributed in the trap with favorable facies and low potentials. The case study showed that the prediction of favorable areas by application of the near source-favorable facies-low potential accumulation model correlated well with over 90% of the discovered oil pools＇ distribution of the middle section of the third member of the Shahejie Formation in the Dongying Dep

关键词： Jiyang Depression subtle trap facies controlling hydrocarbon accumulation fluid potential coupling of facies and potential

China's wind power in stable development An introductton of Beijng Badaling Wind Power Test Station

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Electricity 1992年第3期 45-47页

作者： zhang Shaoxian North China United Power co.

(1)China is vast in territory and rich innatural *** has diversified popula-tion and its energy resources are *** the past more than ten years,there has been a great gap between de-mand and supply in *** order tosolve this problem,the Chinese Govern-ment pays great attention to develop windenergy and new energy policies of suitableto the local conditions,multi-functions

关键词： diversified electricity territory tourist installed grassland Shandong Fujian sized shortage

Maternal alcohol consumption during pregnancy and the risk of childhood acute leukemia:a meta-analysis

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The Chinese-German Journal of Clinical Oncology 2010年第8期9卷 486-489页

作者： Xiaoling zhang Yaodong zhang （co-first author）, Qun Hu Research Laboratory of Pediatric Hematology Tongji Hospital Tongji Medical College of Huazhong University of Science and Technology Wuhan 430030 China Xinxiang Medical University Xinxiang 453003 China

Objective： The authors used a meta-analytic technique to quantify the evidence of an association between ma- ternal alcohol consumption during pregnancy and childhood acute leukemia （AL）, which provided a basis for the prevention of childhood AL. Methods： Relevant literatures of maternal alcohol consumption during pregnancy were comprehensively searched and screened. Subgroup meta-analysis was conducted according to the type of leukemia. Results of research data of maternal alcohol consumption during pregnancy were tested for heterogeneity. combined OR values and 95% CIs were statistically calculated with RevMan 4.2 software; Funnel plots were applied to conduct bias analysis for those included litera- tures. Results： Ten related literatures were included after data screening, 4593 cases in AL group and 6157 cases in control group respectively. According to heterogeneity test result （X2 = 16.26, P 〈 0.05）, the combined OR values and 95% CI were calculated with random effects model, which were 1.02 （0.92-1.14）, Z = 0.41, P = 0.68 〉 0.05, indicating that there was no significant difference between maternal alcohol consumption during pregnancy and the risk of childhood acute leukemia （AL）. Subgroup analysis： for the association between maternal alcohol consumption during pregnancy and childhood acute lympho- blastic leukemia （ALL）, the combined OR value and 95% CI were 0.92 （0.84-1.00）, Z = 1.92, P = 0.05, indicating that there was significant difference between two groups; for the association between maternal alcohol consumption during pregnancy and childhood acute non-lymphoblastic leukemia （ANLL）, the combined OR values and 95% CI were 0.82 （0.61-1.11）, Z = 1.30, P = 0.19 〉 0.05, indicating that there was no significant difference between two groups. conclusion： Maternal alcohol consumption during pregnancy is a risk factor in childhood ALL, but not in childhood ANLL.

关键词： child acute leukemia (AL) maternal alcohol consumption during pregnancy meta-analysis

Numerical Simulation on Optimization of CSP Tundish Flow Field

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Journal of Iron and Steel Research International 2011年第S2期18卷 263-267页

作者： zhang Jian-jun, GAO Wen-fang, PENG Zhu-gang, CAO Tong-you (Research and Development Centre of Wuhan Iron and Steel (Group)co., Wuhan 430080, Hubei, China) Wuhan Iron & Steel Grp co Ctr Res & Dev Wuhan 430080 Hubei Peoples R China

Original scheme and optimizing scheme of WISco CSP tundish have been simulated by software FLUENT. Flow field and temperature field of different schemes have been analyzed. The results which have been proved by hydraulic model experiments are the same with that of numerical simulation. It shows that the dead volume Vd of optimizing scheme decreases to 11.37%, reduced by 67.8% compared with the original scheme. The average residence time Ta of optimizing scheme increases to 639.2s, increased by 172.5s compared with the original scheme. The optimized scheme favors homogenous temperature distribution, more reasonable flow field and inclusions removing in the tundish. It is more adaptive to CSP plant of WISco compared with the original scheme.

关键词： CSP tundish numerical simulation hydraulic model

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矿山采空区边坡动态稳定性评价方法

工程科学学报 2025年第2期47卷 215-223页

作者：杜岩张洪达谢谟文蒋宇静张明贾北凝北京科技大学城市地下空间工程北京市重点实验室北京100083 山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地青岛266590 安徽理工大学深部煤矿采动响应与灾害防控国家重点实验室淮南232001 北京综建科技有限公司北京100007

矿山边坡因采空区沉降引发的斜面岩土体崩塌破坏,是一种破坏力极强的地质灾害.由于传统的稳定性评价方法未考虑采空区沉降造成的应力场变异,难以实现矿山边坡的动态稳定性评价,因而在矿山地质灾害预警预防方面存在诸多限制.基于此,本研... 详细信息

矿山边坡因采空区沉降引发的斜面岩土体崩塌破坏,是一种破坏力极强的地质灾害.由于传统的稳定性评价方法未考虑采空区沉降造成的应力场变异,难以实现矿山边坡的动态稳定性评价,因而在矿山地质灾害预警预防方面存在诸多限制.基于此,本研究针对矿山采空区滑坡的成因机制,建立了一套适用于矿山边坡的动态稳定性评价方法.首先通过构建采空区沉降分析模型,计算采空区上方岩体的沉降范围及其产生的冲击作用力,分析沉降对坡体应力场的影响,并在此基础上对传统不平衡推力法进行修正.案例分析结果显示,传统方法未考虑采空区沉降作用和锁固段的破坏情况,导致稳定性系数计算偏大,为1.355.而改进方法通过考虑采空区沉降信息,计算得出锁固段稳定性系数为0.667,整体稳定性系数为0.979,与矿山采空区边坡实际破坏情况一致.当沉降位移比(SHDR)大于0.73时,采空区边坡稳定性会发生明显变异,因而会在相对安全的工况下发生失稳破坏.改进方法通过考虑采空区沉降作用和锁固段的破坏情况,可以更好地实现矿山边坡稳定性的评价,为矿区更好地应对类似地质灾害提供有效参考.

关键词：采空区边坡动态稳定性评价采空区沉降锁固段沉降位移比

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