随着社会的不断发展,能源的开发与利用技术也在不断进步.作为一种先进的固体物质检测技术,X射线探测也在煤质分析中得到了应用.本文从X射线技术的现状,煤质分析技术现状以及X射线在煤炭行业中的应用等几个方面介绍了X射线在煤质分析中的现状与发展.利用X射线技术,能够减少传统煤样分析的繁杂工作,更加方便快速地得到有关所选原煤的相关技术指标,对指导生产和节约人力有着重要意义.

为了解决振动筛运行状态监测难题,设计了一套基于无线通信的振动筛工况监测系统,可以对振动筛运行工况中的振幅、频率、轴承温升、加速度、角速度等技术参数进行实时在线监测,详细介绍了该监测系统的监测指标选择、系统网络结构设计、系统硬件设计、系统软件设计过程.系统测试表明,该监测系统设计合理、工作可靠,适用于振动筛运行状态在线监控,对振动筛故障诊断具有重要意义.

An optimizing control system for coal slurry flotation has been developed successfully in Huaibei Coal Preparation Plant, Anhui province. On-line ash measurement and fuzzy logic control are employed in this system. Information transfer is based on a parallel-serial communication network. The ash measuring device adopts non-contact probes to detect ash contents of multiple slurry in floatation process. The optimizing control system regulates flotation chemicals and liquid level in flotation cells to reach an optimal target according to the ash contents. Comparing to manual operation, this system can stabilize floatation production, reduce chemicals consume and increase recovery rate. Besides this, it can also reduce work intensity and improve management level.

选煤过程中各级分选工艺参数复杂,而利用机器学习从大量数据中找到一定的规律,能够帮助选煤厂找到合适的分选参数.另外,利用机器视觉能够帮助选煤厂进行矸石分拣灰分预测,提高选煤厂的效率.鉴于此,在对机器学习进行简单介绍的基础上,从选煤工艺、选煤设备、选煤产品预测三个方面对机器学习在选煤厂的应用进行了分析和探讨.

针对矿物在开采、加工和利用过程中其放射性对生态环境的危害问题,对放射性矿物和伴生放射性矿中稀土矿、煤矿、铅锌矿、磷矿和铁矿的放射性及其核素种类、天然放射性核素水平和放射性危害以及对伴生放射性矿物污染的防治措施等进行了研究,得出对于放射性矿物和伴生放射性矿物要制定完善的管理利用体系和全面的监测防治措施以更好地保护环境.

分析了选煤厂供风系统两个主要组成部分罗茨鼓风机和风包的故障原因,并给出了切实可行的故障解决办法和事故预防措施.

经济的快速发展促使人们更有效地利用煤炭资源并降低对环境的污染,超纯煤的制备是煤炭清洁加工和综合利用的重要方面.介绍了超纯煤制备技术的背景和意义,阐述了超纯煤相关制备工艺,分析了超纯煤制备技术的发展趋势.

为解决VM1400型卧式振动离心脱水机维护成本高、配件供货周期长的问题,采用EVM1400型卧式振动卸料离心机代替原脱水设备对13 ～0.5 mm粒级末精煤脱水.介绍了该离心机的结构、工作原理、技术特点、技术参数,并分析了其在丁集矿选煤厂的应用效果.实践表明:EVM1400型卧式振动卸料离心机处理能力大,脱水效果好,维护量小,可靠性高,在13～0.5 mm粒级末精煤脱水方面具有一定优势.

纳米二氧化钛/硅藻土复合材料的应用日益广泛，针对产品质量不稳定、生产所需的原材料及生产过程伴随释放有毒有害气体等问题，提出对复合材料的负载过程进行全自动控制。以防爆、安全和可靠为设计原则，采用远程和就地并行控制模式，就地控制的核心为PLC和触摸屏，而远程操作由组态软件和计算机网络来实现。通过生产线的实际应用表明，复合材料的产品质量稳定，对甲醛的降解去除率达到国家一级净化材料标准，同时大大改善了生产环境。

氢能是很有应用前景的洁净能源，其研究领域涉及到制备、储运和应用三个环节，制备环节已经相对成熟，而氢能储运目前是氢能源发展与应用的主要瓶颈，从而制约了应用的规模化发展，固态储氢已经成为氢能源储存研究的重点。本文分别讨论了储氢合金、微孔储氢材料和配位氢化物储氢材料各自的储氢机理及优缺点，针对各自缺点的改性方法进行了综述，并讨论了它们的发展前景。

To face the challenge of the superior diatomite resources getting rare ,we proposed a wet physical separation process ,by which the resourceful clayey diatomite of a middle or low grade was purified to a high grade .The chemical constituent ,mineral composition and particle‐size distribution of the raw diatomite were analyzed .The co‐relation of the surface potential of the diatomite and montmorillonite with pH value and dispersant dosage was investigated .The optimal condition to scrub and disperse the diatomite slurry was determined .The raw diatomite slurry was completely dispersed according to the size and surface potential difference between the diatomite and the clayey minerals .The efficient separation was thus obtained in the centrifugal force field to enhance the sedimentation velocity difference between the diatom and the clay mineral particles .The actual production results show that the diatomaceous concentrate has reached the first grade standard of diatomite through the separation process with the change of SiO 2 content from 81 .78% to 86 .86% ,Al2 O3 content from 5 .49% to 3 .45% and Fe2 O3 content from 2 .01% to 1 .42% .

Natural diatomaceous earth or diatomite of good quality becomes rare and a demand for it increases every year. In this paper, we develop a novel method based on laminar-flow centrifugal separation to purify mid-and low-grade diatomite for industrial production purposes. Effects of the drum cone angle, drum speed, feeding concentration, feeding flow rate and feeding time on separation were investigated experimentally. The interdependency of these variables was studied using a response surface experiment. Operating conditions of a laminar-flow centrifugal separator were further optimized. Results showed that the feeding flow rate had a great influence on a silicon dioxide content of diatomaceous in concentrate and tailing. The optimal separation results were achieved as 87.5 wt.%, of SiO2 content of diatomaceous in concentrate and 6.98 wt.% in tailing. The optimal operating conditions included the drum cone angle of 0.0087 rad, the drum speed of 89.62 rad/s, the feeding concentration of 24.66 wt.%, the feeding flow rate of 2.33x10(-4) m(3)/s, and the feeding time of 90 s. A scanning electron microscopy (SEM) clearly indicated that the pore blockage on the surface of diatoms was cleared out. The variation about the breakage rate of diatom shells was lower than 5% through the pilot purification production line. The characterization of original diatomite and derived products after purification were determined by Xray diffraction (XRD). The results indicated that the impurity content of purified diatomite was improved significantly.

《科研导论课》是创新教学环节中的一门必修的基础理论课程，为进一步开展大学生创新训练项目、培养大学生的创新精神与创新能力奠定基础。本文在简介科研导论课课程内容的基础上，针对科研导论课的特点，结合我校研究型本科教育教学体系的创新教育思想，从教材内容、教学手段和方法、考核体系等方面进行教学改革的探讨，通过教学实践，表明了教学改革的有效性。

During the coal preparation plant design and production,a large amount of data of coal quality and technical parameters of coal preparation were collected through off-line or on-line method and stored in the computer,but due to these data are almost not further processed,so rarely play a role.These data actually contains most important information such as coal quality difference,appearance of anomalous events and fluctuation of products quality.This paper introduces a visual statistic analysis method—biplots,and its current research situation,the basic mathematic fundamentals and the performing tools,and on which basis,using the coal quality data and separation data verified the feasibility of biplots visualization analyzing method used in coal preparation data analyzing and displaying,that provides a novel method to mine the coal preparation data.

This study presented a novel method for purification of three different grades of diatomite from China by scrubbing technique using sodium hexametaphosphate (SHMP) as dispersant combined with centrifugation. Effects of pH value and dispersant amount on the grade of purified diatomite were studied and the optimum experimental conditions were obtained. The characterizations of original diatomite and derived products after purification were determined by scanning electron microscopy (SEM), X-ray diffraction (XRD), infrared spectroscopy (IR) and specific surface area analyzer (BET). The results indicated that the pore size distribution, impurity content and bulk density of purified diatomite were improved significantly. The dispersive effect of pH and SHMP on the separation of diatomite from clay minerals was discussed systematically through zeta potential test. Additionally, a possible purification mechanism was proposed in the light of the obtained experimental results.

《物理选矿》是矿物加工工程专业学生的一门核心必修专业主干课程，本文在简介《物理选矿》课程内容的基础上，针对物理选矿理论性和实用性的特点，结合研究型大学的办学思想和创新教育的要求，从教材、教学方法和考核方式等方面进行课程教学的探讨，并应用于《物理选矿》的课程教学中，通过教学实践，表明了课程建设的有效性。

Three porous amorphous silica minerals, including diatomite, opal and porous precipitated SiO2 were adopted to prepare supported TiO2 catalysts by hydrolysis-deposition method. The prepared compound materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Through morphology and physical chemistry properties of the resulting TiO2/amorphous SiO2 catalysts, it was proposed that the nature of silica supports could affect the particle size and the crystal form of TiO2 and then further influence the photocatalytic property of TiO2/amorphous SiO2 catalysts. The catalytic properties of these porous amorphous silica supported photocatalysts (TiO2/SiO2) were investigated by UV-assisted degradation of Rhodamine B (RhB). Compared with pure TiO2 (P25) and the other two TiO2/amorphous SiO2 catalysts, TiO2/diatomite photocatalyst exhibits better catalytic performance at different calcined temperatures, the decoloration rate of which can be up to over 85% even at a relatively low calcined temperature. The TiO2/diatomite photocatalyst possesses mixed-phase TiO2 with relatively smaller particles size, which might be responsible for higher photocatalytic activity. Moreover, the stable and much inerter porous microstructure of diatomite could be another key factor in improving its activity. (c) 2013 Elsevier B.V. All rights reserved.

物理选矿是矿物加工工程专业学生的一门核心必修专业主干课程,本文在简介物理选矿课程的基础上,针对物理选矿理论性和实用性的特点,结合研究型大学的模式和创新教育的要求,提出科研式教学的方法,并应用于物理选矿的课程教学中,通过教学实践,表明了这种方法的可行性和有效性.

针对硅藻土分选厂因位置偏僻和技术力量有限等因素导致分选效果差、产品质量不稳定等问题,提出根据硅藻土分选工艺的特点、企业环境和生产需求研究开发基于过程控制、计算机网络、软件编程和现代管理等技术的硅藻土生产管控一体化系统。论文详细阐述了该系统的设计思路、网络结构、功能模块和特点,将过程控制和企业管理集成为一个信息平台,达到信息共享、高效调度,提高分选厂的科学管理水平和企业的经济效益。

针对目前选煤厂生产数据报送采用电话联系方式,导致效率低、速度慢、时效性差和容易出现误报等问题,提出采用LED电子屏和计算机技术实现数据的采集、传输和岗位显示,通过现场实际应用表明,该系统自动化程度高,数据传输准确、可靠、及时,有助于选煤厂的生产调度管理和对设备的操作,值得推广应用。