拓开铜铅锌尾矿在水泥制造中的全面应用(二)

3铜铅锌尾矿在水泥制造中的应用分类 经多方面的试验和应用，依据尾矿的成因、矿物成分、化学成分及其作用的大小，可以将它们分成三个应用类：矿化剂类、代粘土类、混合材类。     

用锑渣与煤矸石全代黏土配料生产优质水泥熟料

某厂拥有2条8.8万t机立窑生产线,原采用煤矸石代部分黏土配料生产水泥,但因熟料中Al2O3含量过高,硅酸盐矿物偏低,熟料质量不太理想。2004年下半年,笔者配合该厂技术人员利用当地工业废渣——锑渣资源较为丰富的特点,采用锑渣与煤矸石全代黏土配料生产优质水泥熟料取得成功,获得     

第二届全国非金属矿表面改性技术专题研讨会（第一轮通知）

表面改性技术是改善和提高非金属矿物粉体与非金属矿物材料应用性能和产品附加值的最主要的深加工技术之一。表面改性技术是伴随现代高技术和新材料产业而发展起来的一门新的非金属矿物粉体和其他粉体材料的加工技术，已成为影响非金属矿深加工产业、非金属矿物材料、超细和纳米粉体加工业以及相关产业发展的关键技术之一。     

Characteristics of shell thickness in a slab continuous casting mold

The key to reduce shell breakout in the continuous casting process is to control shell thickness in the mold.A numerical simulation on the turbulent flow and heat transfer coupled with solidification in the slab mold using the volume of fluid (VOF) model and the enthalpy-porosity scheme was conducted and the emphasis was put upon the flow effect on the shell thickness profiles in longitudinal and transverse directions.The results show that the jet acts a stronger impingement on the shell of narrow face,which causes a zero-increase of shell thickness in a certain range near the impingement point.The thinnest shell on the slab cross-section locates primarily in the center of the narrow face,and secondly near the comer of the wide face.Nozzle optimization can obviously increase the shell thickness and make it more uniform.     

江西省高等学校重中之重学科江西理工大学矿物加工工程简介（一）

江西理工大学矿物加工工程（选矿工程）是学校于1958年开办的8个专业之一,1985年开始招收和培养硕士研究生,1998年取得硕士学位授予权,矿物加工工程学科是江西省高等学校“十五”、“十一五”重点学科,2002年被评为江西省高等学校首批品牌专业,2008年被省教育厅评为首批江西省高等学校重中之重学科。     

铝—尖晶石浇注料微粉部分的最佳组成（Ⅰ）

1 前言 铝-尖晶石浇注料现在已成了盛钢桶不定形耐火材料的主流,其损毁的主要原因可以认为是伴随炉渣浸润产生的结构剥落。此次日本品川耐火材料公司调查了铝-尖晶石浇注料微粉部分矿物相的热变化,从抑制炉渣浸润方面研究了最佳组成,现报道如下。 2 矿物相的热变化 2.1 试验 供给试验使用的原料的化学成份列于表     

复掺钢渣细集料混凝土力学及耐久性研究

以C60普通混凝土为基准,将部分细集料采用钢渣进行替换,胶凝材料由不同比例的矿物掺合料复掺代替,组成复掺钢渣细集料混凝土。通过对复掺钢渣细集料混凝土与基准混凝土强度的比较,将强度优选组与基准混凝土进行抗侵蚀及抗冻性能的测试。结果表明:延长复掺钢渣细集料混凝土的养护时间,可以提高其抗压性能;普通混凝土与复掺钢渣混凝土强度优选组,在6个月硫酸盐与镁盐侵蚀条件下的抗折、抗压侵蚀系数均大于0.8;强度优选组中抗冻性能可达到F150的要求,而GFKS-1则可以满足F200的要求。     

A novel approach to prevent bubble coalescence during measurement of bubble size in flotation简

Effect of frothers in preventing bubble coalescence during flotation of minerals has long been investigated. To evaluate the performance of a frother, an apparatus to measure the bubble size is a basic necessity. McGill Bubble Size Analyzer （MBSA） or bubble viewer that has been developed and completed by McGill University＇s Mineral Processing Group during the last decade is a unique instrument to serve this purpose. Two parameters which are thought to influence the bubble size measurements by McGill bubble viewer include water quality and frother concentration in the chamber. Results show that there is no difference in Sauter mean （D32） when tap or de-ionized water was used instead of process water. However, the frother concentration, in this research DowFroth 250 （DF250）, inside the chamber exhibited a pronounced effect on bubble size. Frother concentration below a certain point can not prevent coalescence inside the chamber and therefore caution must be taken in plant applications. It was also noted that the frother concentration which has been so far practiced in plant measurements （CCC75-CCC95） is high enough to prevent coalescence with the bubble viewer.     

Correspondence of bubble size and frother partitioning in flotation

The size of bubbles created in the flotation process is of great importance to the efficiency of the mineral separation achieved. Meanwhile, it is believed that frother transport between phases is perhaps the most important reason for the interactive nature of the phenomena occurring in the bulk and froth phases in flotation, as frother adsorbed in the surface of rising bubbles is removed from the bulk phase and then released into the froth as a fraction of the bubbles burst. This causes the increased concentration in the froth compared to the bulk concentration, named as frother partitioning. Partitioning reflects the adsorption of frother on bubbles and how to influence bubble size is not known. There currently exists no such a topic aiming to link these two key parameters. To fill this vacancy, the correspondence between bubble size and frother partitioning was examined. Bubble size was measured by sampling-for-imaging （SFI） technique. Using total organic carbon （TOC） analysis to measure the frother partitioning between froth and bulk phases was determined. Measurements have shown, with no exceptions including four different frothers, higher frother concentration is in the bulk than in the froth. The results also show strong partitioning giving an increase in bubble size which implies there is a compelling relationship between these two, represented byCFroth/CBulk andD32. TheCFroth/CBulk andD32 curves show similar exponential decay relationships as a function of added frother in the system, strongly suggesting that the frother concentration gradient between the bulk solution and the bubble interface is the driving force contributing to bubble size reduction.