应用低贫化放矿的可行性浅析

鉴于鲁中冶金矿山公司现行截止品位放矿方式中存在贫化率较大的问题，提出采用提高截止品位的低贫化放矿方式，通过技术经济指标的分析计算，认为低贫化放矿技术上可行，经济上合理，在现场易于实现，具有应用价值。     

有色冶金炉渣热回收利用述评

本文分析介绍了国外一种有色冶金炉渣显热回收利用的成熟工艺。综述了国内有色冶金炉渣热回收利用的现状,初步阐述了国内有色冶金炉渣热回收利用的途径。     

高压辊磨机在冶金矿业的应用前景

在概述高压辊磨机的辊磨原理的基础上，分析了辊磨后物料对矿物回收率的影响及在设备结构上的最新改进，探讨了高压辊磨机普遍应用于冶金矿业的必要性和可行性。     

采用M16,M17强化铜,金,银回收的研究

新型捕收剂Ｍ１６、Ｍ１７用于凤凰山铜矿提高铜、金、银的回收率，取得了突出效果。该药剂对硫化铜矿物的选择性捕收效果好，而且对伴生金、银有较强的捕收能力。产品稳定性好，使用方便，生产过程稳定，具有较高的推广应用价值。     

可伸缩悬臂式装煤机的研制

可伸缩悬臂式装煤机适用于仓房开采条件，主要可以提高仓房开采的资源回收率，减轻工人的劳动强度，增加现场作业的安全可靠性。     

Architectural survey of historical buildings: The orders of classical architecture in the Baptistery of Florence

The survey of historic buildings is very important for architectural conservation. An integral survey allows perpetuating the building historical memory, deciphering it for future generations, and recovering it in case of accidental loss. The Baptistery of Florence survey was done with four measuring methods: the “direct” one, which employs traditional measuring tools; the “indirect” one, which expedites the dimension-gathering process with more precision; and the “photogrammetric” one, which uses snapshots to facilitate the representation process with computers. An innovative measuring concept, known here as the “recovery survey”, synthetizes graphical reality so that irregularitiesddue to the project materialization and deterioration over timeddisappear; therefore, retrieving the building original design. Columns with their bases, shafts and capitals, as well as entablatures with their architraves, friezes and cornices were under study. The three Greek orders (Doric, Ionic and Corinthian) together with the two roman orders (Tuscan and Composite) unveiled the classical architecture significance. These constituents, which reoccur inside and outside the baptistery, were measured as part of these holistic survey and recovery process, to achieve the objective of this research study: the recording of this world historical building through an integral survey and rilievo to decode its significance and symbolism.     

铜浮选专家控制系统设计与应用

针对国内某选矿厂铜浮选工艺泡沫速率不稳定,精矿品位波动大,回收率不理想等特点,设计了一套浮选专家控制系统,该系统结合泡沫影像分析技术,在线品位分析技术,PID控制与模糊逻辑控制技术。系统架构简明合理,逻辑层次清晰有效,投入运行一段时间后,在不同原矿品位前提下,都能实现稳定泡沫速率,减少精矿品位波动,提高回收率等指标优化,同时药剂添加量也有明显减少。这表明该系统运行效果良好,值得应用推广。     

老矿山残矿资源回收方案设计中三维探测及建模技术的应用

目前我国绝大多数中小型老矿山残矿回收面临一系列问题,包括资料缺失无法准确判定老采空区及剩余资源位置,无法准确掌握剩余资源形态及可回收量,回收方案设计与实际资源相差较大等。通过将三维探测及建模技术应用于老矿山残矿资源精准定位及回收方案设计中,有助于解决以上问题。以福建浦城屏峰硫铅锌矿为例,通过对老采空区采用三维激光扫描构建采空区三维模型,结合三维建模计算,构建了目前可回收的剩余资源三维模型。通过模型划分及切割,按照矿体实际形态,在三维模型中布设采切及穿孔工程,并将其导入平面施工图中,不仅可以减少设计工作量,而且能够精准匹配矿体,减少设计偏差。由于周边存在大量老采空区,为保障安全,在采空区及剩余资源精准三维模型的基础上,制定了采空区稳定性监测方案,布设了监测传感器,保障了资源回收安全。     

Modelling the influence of palmitic, palmitoleic, stearic and oleic acids on apparent heat resistance of spores of Bacillus cereus NTCC 11145 and Clostridium sporogenes Pasteur 79.3

Heat resistance of spores is affected by many factors such as temperature, pH, water activity (aw) and others. Previous studies have reported that free fatty acids can affect the germination and growth of bacterial spores. In this study, we investigated the influence of free fatty acids in heating medium or in recovery medium on the heat resistance of spores of Bacillus cereus NTCC 11145 and Clostridium sporogenes Pasteur 79.3. Four free fatty acids were studied: palmitic, palmitoleic, stearic and oleic acids. During thermal treatments, the impact of these FFA in heating media was generally low, but the presence of free fatty acids in the recovery medium highly decreases bacterial spore apparent heat resistance, particularly with unsaturated fatty acids. A mathematical model was developed to describe and quantify the influence of free fatty acids in recovery media on the D-values. The z′_FFA parameter values which quantify the impact of free fatty acids were determined. The variation of this parameter value according to the free fatty acid type was compared with MIC value variation given in the literature. The model enables the decrease in D-values in the presence of free fatty acids to be estimated. The high concentrations of free fatty acids in liver or canned duck may explain the microbial stability with low sterilization values applied.     

对压粕水回收技术的探讨

本文针对压粕水回收流程的经济价值进行了讨论,并介绍了目前黑龙江一些糖厂压粕水回收流程的使用情况,对生产中存在的问题进行了分析,最后提出了改进该工艺的几点建议。