20钢管翘皮缺陷原因分析

电子探针分析表明，翘皮缺陷内部存在聚集的大型夹杂物，翘皮缺陷的形成，是在穿管深加工过程中，管壁不断减薄，夹杂物逐渐外露，表皮外翻所致。翘皮处的夹杂物矿相是以铝酸钙和黄长石为主，还存在少量锆刚玉变质体以及镁铝尖晶石，跟下水口侵蚀反应产物相吻合；聚集的大型夹杂物与下水口侵蚀后的脱落物有关。     

Upgrading titanium bearing Na-feldspar by flotation using sulphonates, succinamate and soaps of vegetable oils

Large reserves of feldspar ores exist in the Aegean region of Turkey. Unlike conventional ores, the main impurity in some of these deposits is titanium. In this study, the results of testwork carried out to determine flotation conditions for efficient separation of titatium bearing minerals from two different feldspar ores from the area are presented. The study commenced with mineralogical examination which indicated that the main titanium bearing mineral in the ore was rutile. Another titanium mineral, sphene, was also present in relatively small quantities. In the tests, the effects of particle size, pH, collector types and their amount were tested.The results showed that efficient separation of titanium bearing minerals could be achieved by oleate flotation at around pH 5, after grinding the ore down to 100% −180μm. Oleate provided results superior to sulphonates and succinamate. Equivalent success was obtained by the use of collectors prepared from locally available vegetable oils. Of the five oils tested, sunflower and cotton seed oils produced the most efficient separation.     

APPLICATION AND INTERACTION MECHANISMS OF POLYMERIC CARBOHYDRATE IN OXIDES AND SALT-TYPE MINERALS

A systematic analysis has been carried out to investigate the fields of application and interaction mechanism of polymeric carbohydrate,i. e. polysaccharides(including starch , dextrin , cellulose and cellulosic derivatives ) on various oxides and salt-type minerals in the article, interaction mechanisms of electrostatic.of hydrogen bonding.and of chemical interaction between polymeric carbohydrate and these minerals are put forward.     

应用量子化学算法研究水泥矿物结构与性能的关系

讨论了自洽场离散变分X_a（SCF-X_a-DV）量子化学分子轨道计算方法的基本特性、主要计算结果及其物理意义。评述了SCF-X_a-DV方法在研究水泥矿物结构与性能关系中的应用,研究体系包括硅酸二钙、硫铝酸盐、铁铝酸盐、铝酸盐、氟铝酸盐、钙钒石及它们的同系物系列。     

宝玉石矿床的找矿与评价

简要论述了宝玉石的找矿方法评价原则     

Slon立环脉动高梯度磁选机在金属矿选矿中的应用

阐述了Ｓｌｏｎ立环脉动高梯度磁选机的结构、工作原理及特点，并对Ｓｌｏｎ机在４个金属矿的应用情况作了简要介绍。     

The relationship between excluded mineral matter and the abrasion index of a coal

Predictions of the wear rates of components in grinding mills at pulverised coal-fired power stations are currently made using empirical relationships based on the ash content of the coals. However, modern coal characterisation techniques now allow the mineral inclusions in a coal that are responsible for the abrasive nature of the coal to be accurately characterised. Hence, there is scope to make improved predictions of wear based on a detailed knowledge of the mineral matter in a particular coal. It is first necessary, however, to understand the nature of the minerals and properties of the minerals in a coal that would contribute to abrasive wear. In this study known quantities of quartz, pyrite and slate have been added to a washed coal and the Abrasion Indices of the coal/mineral mixtures have been measured. The results show how the size, shape and hardness of excluded mineral matter contribute to the abrasive properties of a coal.     

伊利石开发利用初探

伊利石是一种新型的粘土矿物，本文对其开发利用进行了论述，建议加强伊利石的应用研究工作。     

Selenium Content of Bison, Elk and Mule Deer

Selenium (Se) content of elk, mule deer, bison and beef skeletal muscle was measured and compared. Selenium content was determined by graphite furnace after wet nitric acid digestion. Game samples did not differ in Se content but contained more Se than beef (wet weight) (P<0.05). On dry weight basis, deer contained more Se than elk, bison or beef (P<0.05). Within samples from male elk and deer, and elk and bison of both genders, there were interactions between species and muscles (P<0.05). Type of muscle and gender did not influence Se content (P<0.05). Selenium toxicity from consuming game that foraged in high selenium environments is remote.