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Journal of Environmental Sciences 2021年第9期33卷 194-204页

作者： Wenwu Yang Zhenfei Yang Luhua Shao Sijian Li Yutang Liu Xinnian Xia College of Chemistry and Chemical Engineering Hunan UniversityChangsha 410082China Advanced Catalytic Engineering Research Center of the Ministry of Education Hunan UniversityChangsha 410082China College of Environmental Science and Engineering Hunan UniversityLushan South RoadYuelu DistrictChangsha 410082China

Cr(Ⅵ) is a common heavy metal ion, which will seriously harm human body and ***, the removal of Cr(Ⅵ) has become an attractive *** this work, cinder was used as a raw material to synthesize a nanoneedle material: γ-(AlOOH@FeOOH)(γ-Al@Fe).The physicochemical properties of γ-Al@Fe were thoroughly characterized, and its effectiveness as a catalyst for photocatalytic reduction of Cr(Ⅵ) was *** results showed that Cr(Ⅵ) could be efficiently reduced by γ-Al@Fe in the presence of tartaric acid(TA) under visible *** variable factors on the reaction were investigated in detail, and the results showed that under optimal conditions(γ-Al@Fe 0.4 g/L, TA 0.6 g/L, pH 2), Cr(Ⅵ)was completely reduced within 7 ***, scavenger experiments and EPR proved that O_(2)^(·-) and CO_(2)^(·-) played a significant role in the photocatalytic reduction of Cr(Ⅵ).TA acts as a sacrificial agent to trap the holes and generate strong reducing free radicals: CO_(2)^(·-).Dissolving O_(2) could react with electrons to generate O_(2)^(·-).This work discussed the performance and mechanism of photocatalytic reduction of Cr(Ⅵ) in detail, which provided a new idea for the resource utilization of solid waste and the treatment of heavy metal sewage.

关键词： cinder Tartaric acid Visible light photocatalysis Cr(Ⅵ)removal Reduction mechanism

A novel process for Fe recovery and Zn, Pb removal from a low-grade pyrite cinder with high Zn and Pb contents

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International Journal of Minerals,Metallurgy and Materials 2018年第9期25卷 981-989页

作者： Cong-cong Yang De-qing Zhu Jian Pan Si-wei Li Hong-yu Tian School of Minerals Processing and Bioengineering Central South University

Comprehensive utilization of pyrite cinders is increasingly important because of their huge annual outputs and potential valuable metals recovery to cope with the gradual depletion of high-grade mineral resources. In this work, a new process, i.e., a high-temperature chlorination–magnetizing roasting–magnetic separation process, was proposed for recovering Fe and removing Zn, Pb from a low-grade pyrite cinder containing 49.90 wt% Fe, 1.23 wt% Zn, and 0.29 wt% Pb. Various parameters, including the chlorinating conditions(dosage of Ca Cl2, temperature, and time) and the magnetization roasting conditions(amount of coal, temperature, and time) were investigated. The results indicate that the proposed process is effective for Fe recovery and Zn, Pb removal from the pyrite cinder. Through this process, 97.06% Zn, 96.82% Pb, and approximately 90% S can be removed, and 89.74% Fe is recovered as magnetite into the final product under optimal conditions. A purified magnetite concentrate containing 63.07 wt% Fe, 0.16 wt% P, 0.26 wt% S, and trace amounts of nonferrous metals(0.005 wt% Cu, 0.013 wt% Pb, and 0.051 wt% Zn) was obtained. The concentrate can be potentially used as a high-quality feed material for producing oxidized pellets by blending with other high-grade iron ore concentrates.

关键词： pyrite cinder purification zinc lead high-temperature chlorination magnetizing roasting

Preparation of pre-reduced pellet using pyrite cinder containing nonferrous metals with high temperature chloridizingreduction roasting technology—Effect of CaCl_2 additive

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Journal of Central South University 2015年第11期22卷 4154-4161页

作者：陈栋朱德庆洪澜陈瑶许继芳伍凌 Shagang School of Iron and Steel Soochow University School of Minerals Processing and Bioengineering Central South University School of Mechanical and Electric Engineering Soochow University

The role of CaCl2 during the high temperature chloridizing-reduction roasting process was investigated, aiming at acquiring high strength blast furnace burden with high iron grade and low nonferrous metals content. The effects of CaCl2 dosage on pelletizing, preheating and reduction were investigated. The results show that CaCl2 can improve the wet drop strength but reduces the thermostability of pyrite cinder green balls. When the dosage of CaCl2 exceeds 1%, the compressive strength of preheated pellets decreases while the growth of iron oxide particles is improved. Furthermore, the compressive strength of pre-reduced pellets increases but the metallization degree of pre-reduced pellets decreases with CaCl2 additive. The removal tests indicate that Zn can be removed completely without CaCl2 additive, Cu is removed only under the condition with CaCl2 additive and part of Pb must be removed by CaCl2 additive.

关键词： pyrite cinder CaCl2 additive pelletizing chloridis

Utilization of gold-bearing and iron-rich pyrite cinder via a chlorination–volatilization process

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International Journal of Minerals,Metallurgy and Materials 2017年第11期24卷 1241-1250页

作者： Jian Ding Pei-wei Han Cui-cui Lü Peng Qian Shu-feng Ye Yun-fa Chen State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

The chlorination-volatilization process has been adopted to make full use of gold-bearing and iron-rich pyrite cinder. However, problems of low recovery rate, pulverization of pellets, and ring formation have been encountered during the industrialization of this process. The effects of various parameters on the volatilization rates of valuable metals and on the compressive strength of roasted pellets were investigated in this paper. The parameters include the CaCl_2 dosage, heating temperature, and holding time. The results show that heating temperature is the most important parameter for the recovery of target metals. More CaCl_2 was needed for the recovery of zinc than for the recovery of gold, silver, and lead. CaCl_2 started to react with sulfides/SO_2/SiO_2 at temperatures below the melting point of CaCl_2 to generate Cl_2/HCl. Gaseous CaCl_2 was formed at higher temperatures and could react with any of the components. The compressive strength of roasted CaCl_2-bearing pellets first decreased slowly with increasing temperature at temperatures lower than 873 K, which could result in the pulverization of pellets during heating. Their compressive strength increased dramatically with increasing temperature at temperatures greater than 1273 K. Certain quantities of CaCl_2 and Fe(Ⅱ) could improve the compressive strength of the roasted pellets; however, the addition of excessive CaCl_2 decreased the compressive strength of pellets.

关键词： pyrite cinder gold chlorination oxidized pellets compressive strength

基于OpenStack平台的cinder服务的研究与实现

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信息记录材料 2021年第11期22卷 117-119页

作者：程宁戴远泉湖北轻工职业技术学院湖北武汉430070

在当前云计算、大数据等科技不断发展的背景下,云存储技术作为一种区别于传统存储技术的一种新型存储方式,因其具有数据存储容量大、数据存储安全性高、数据存储使用方便等特点,在社会的更多领域加以应用。本文通过对云存储技术的相关介... 详细信息

在当前云计算、大数据等科技不断发展的背景下,云存储技术作为一种区别于传统存储技术的一种新型存储方式,因其具有数据存储容量大、数据存储安全性高、数据存储使用方便等特点,在社会的更多领域加以应用。本文通过对云存储技术的相关介绍,提出一种OpenStack+cinder的云存储架构的搭建方案并加以实现。

关键词：云存储 OpenStack cinder

HyperScale系统中容器存储子系统的设计与实现

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HyperScale系统中容器存储子系统的设计与实现

作者：杨鹤凌西安电子科技大学

学位级别：硕士

随着IT技术的不断发展,各行业面对数据量的猛烈增长,能够同时满足高速计算和海量存储的数据中心在各个领域中的作用变得越来越重要。IBM公司便提出了自己的Hyper Scale系统,将计算资源和存储资源进行整合,同时在系统底层使用了容器技术... 详细信息

随着IT技术的不断发展,各行业面对数据量的猛烈增长,能够同时满足高速计算和海量存储的数据中心在各个领域中的作用变得越来越重要。IBM公司便提出了自己的Hyper Scale系统,将计算资源和存储资源进行整合,同时在系统底层使用了容器技术。Hyper Scale系统中负责计算工作的部分是ASC模块,分布式架构的底层使用了Docker容器,容器管理方面使用了Kubernetes编排工具;Hyper Scale系统中负责存储工作的部分为容器存储子系统,在传统的容器存储解决方案中,容器通常使用的是临时存储,经常会导致容器消失后,容器中的数据也随之消失,基于此给底层使用容器技术的大型系统提供拥有持久化存储的容器就是必不可少的。同时,OpenStack中的cinder组件从设计之初就是帮助系统管理块存储资源的,因此容器通过与cinder组件进行整合来实现持久化存储也是符合行业需求的。本文中首先对研究人员在开发过程中发现的问题和用户在使用产品时遇到的困难进行充分调研,发现了现阶段很多种面向容器的资源存储方案都存在无法持久化存储的现象,与容器绑定的存储资源生命周期与系统中容器的生命周期息息相关,容器被停止甚至删除以后,极易导致原来与容器绑定的存储卷内的数据一并消失,造成无法挽回的损失。在查阅大量国内外资料和公司文档后,本文对Hyper Scale系统中容器存储子系统在不同业务应用场景中的情况进行了详细的需求分析。在需求分析的基础上,本文仔细研究了IBM公司Hyper Scale系统的架构和各部分功能,进而分别详细描述了系统中的应用架构和功能结构,并基于此设计了帮助系统中的容器使用持久化存储资源的容器存储子系统。实现过程中,在目前行业内OpenStack与容器技术兼容性不断提高的背景下,提出了利用cinder组件自身对块存储资源进行管理的特点,使容器存储与cinder组件进行整合的技术。本文把容器存储子系统分成了若干的功能模块,并对其中的节点存储创建模块、节点存储绑定模块、通信模块、容器存储转换模块、容器存储绑定模块进行了详细的设计与实现。本文在完成了容器存储子系统的实现工作后,对系统的各模块进行了充分的功能测试,并对系统整体进行了性能测试。在测试过程中,对测试出的系统漏洞和问题及时进行修改。本系统在实现完成后,与IBM公司的Hyper Scale系统进行整合,投入到实际生产环境中进行使用。本系统能够满足容器持久化存储业务需求,提升了上层系统的工作效率,本文完成了预期工作。

关键词： HyperScale 容器存储 cinder

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云存储调度关键技术研究与实现

云存储调度关键技术研究与实现

作者：肖博电子科技大学

学位级别：硕士

随着互联网在各传统行业中的应用和大数据等技术的发展,当前需要存储的数据量在急速增加,云存储逐渐成为数据存储的发展趋势。混合云存储结合了公有云存储和私有云存储的优点,被认为是云存储未来的发展方向。但是,由于混合云存储与其他... 详细信息

随着互联网在各传统行业中的应用和大数据等技术的发展,当前需要存储的数据量在急速增加,云存储逐渐成为数据存储的发展趋势。混合云存储结合了公有云存储和私有云存储的优点,被认为是云存储未来的发展方向。但是,由于混合云存储与其他两种云存储模式相比结构更加复杂且提出时间较短,使得混合云存储在许多方面尤其是调度上还不够完善。cinder是主流开源云平台OpenStack的块存储组件,负责为云平台提供存储服务。OpenStack作为当前应用最广泛的开源云平台得到了业界的普遍认可,随之带来cinder的应用也越来越广泛,但cinder的调度算法在设计上存在缺陷,有必要对其进行改进。本文研究重点是对混合云存储面临的调度问题以及cinder默认调度算法存在的缺陷提出新的算法对它们进行解决。主要工作内容如下:(1)提出了一种基于混合云存储的多维调度算法。混合云存储相比私有云存储和公有云存储复杂度更高,调度需要考虑的影响因素也更多。当前的云存储调度研究大多只针对单一目标,它们或关注访问速度,或关注费用,或关注数据安全,但将多个方面综合起来进行混合云存储调度的研究少之又少,同时当前的混合云存储调度算法仍存在一些缺陷。本文提出基于BP神经网络的混合云存储多维调度算法,并在算法中对传统的BP神经网络进行了改进以满足混合云存储调度的需求。实验表明基于BP神经网络的调度算法在请求分配速度、请求分类和安全调度上与现有算法相比具有更好的效果。(2)提出了一种基于OpenStack块存储改进的调度算法。作为OpenStack的块存储组件cinder本身的调度算法只考虑了一个调度影响因素,这种调度显然并不能达到根据综合性能对存储节点的调度。为此,本文提出了一种基于三角模糊数的调度算法,该算法同时考虑存储节点的多个评价因素,根据综合性能对存储节点进行调度。同时由于三角模糊数的引入,定性指标得以使用定量的方法进行描述,使得调度模型更加健壮。实验表明新算法在IOPS和MBPS性能上与cinder默认算法相比有所提高,达到了较为理想的效果。(3)最后设计了基于OpenStack的云存储平台,主要实现了资源监控和存储调度两个模块。在存储调度模块中使用了本文实现的调度算法,使得本文描述的云存储调度中存在的问题得以改善。

关键词：云存储混合云 cinder 调度

Research on Kaolinite Type Pyrite Slag as Activity of Cement Mixed Material

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矿物学报 2013年第S1期33卷 115-115页

作者： XIE Peng HUANG Yang YAN Fangfang FENG Qiming Key Laboratory of Solid Waste Treatment and Resource Recycle SWUSTMinistry of Education

Produced by the production of sulfuric acid from kaolinite type when the Fe2O3 and metakaolin together constitute the kaolinite type pyrite cinder is a typical industrial solid waste. Only in southern Sichuan China storage capacity has reached millions of tons, that caused serious impact on ecology and environment in this area. It also caused serious waste of resources. The magnetite concentrate and given priority to with partial kaolinite pyrite cinder tailings that were obtained by grinding and magnetic separation. This experiment studied the relationship composition and particle size with its activity when cinder tailings as cement mixed material. The results show that the particle size of D90 were 88 micron, 56 micron, 40 micron, the activity index were 1.036, 1.068, 1.102. The slag after magnetic separation is a kind of very good activity of cement mixed material. It can make good use of the industrial solid waste.

关键词： kaolinite type pyrite cinder magnetic separation activity of cement admixture activity index

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云计算技术应用实践

中国新通信 2021年第6期23卷 112-113页

作者：冯子煦中国联合网络通信有限公司佛山市分公司

云计算(CloudComputing)是信息时代虚拟化、网络化、共享化的重要产物。目前Openstack架构是较流行的云计算核心架构,作为一种开源架构,被广泛应用。下文就以Openstack为核心的云计算结构做简要介绍,帮助大家了解云计算基础结构知识的... 详细信息

云计算(CloudComputing)是信息时代虚拟化、网络化、共享化的重要产物。目前Openstack架构是较流行的云计算核心架构,作为一种开源架构,被广泛应用。下文就以Openstack为核心的云计算结构做简要介绍,帮助大家了解云计算基础结构知识的同时简要介绍云计算的一些应用实践场景和应用优势。

关键词： CloudComputing Openstack keystone swift glance cinder nova Neutron

OpenStack平台与Ceph统一存储的集成

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中国管理信息化 2016年第4期19卷 168-168页

作者：王建宇中国石油大港油田信息中心天津300280

在目前开源世界的存储项目中,不同的项目都有侧重点,然而,存储接口需求、扩展、运维和成本是企业级存储产品的四大关注点。Ceph是一种支持对象存储、块存储、文件存储的独特统一的系统,具有高可用、易管理、免费等特点。本文介绍了当下... 详细信息

在目前开源世界的存储项目中,不同的项目都有侧重点,然而,存储接口需求、扩展、运维和成本是企业级存储产品的四大关注点。Ceph是一种支持对象存储、块存储、文件存储的独特统一的系统,具有高可用、易管理、免费等特点。本文介绍了当下流行的Ceph分布式存储架构,描述了Ceph的基本结构每个组件的作用及如何创建和优化Ceph集群,并就Ceph作为OpenStack的后端存储、高效集成,及CRUSH算法进行了分析。

关键词： OpenStack Nova cinder Ceph RADOS