白色绢云母珠光颜料制备及表征

用绢云母可制得一种具有良好光学屏蔽性能的新型珠光颜料，市场前景广阔。本文讨论了白色绢云母珠光颜料的制备方法，并重点研究了试验条件对其性能的影响，同时还用XRD、SEM等手段对产品进行了表征。     

有机-无机复合改性绢云母的研究

针对绢云母难以在有机涂料中润湿和分散的缺点,用γ-缩水甘油醚氧基丙基三甲氧基硅烷(KH-550)与铬酸盐对片状绢云母进行了复合改性,并进一步考察了改性绢云母对环氧涂料防腐性能的影响.扫描电镜(SEM)表明:KH-550和铬酸盐对绢云母进行复合改性后,绢云母在涂料中颗粒弥撒分布更加均匀,排布致密,与表面的结合更为密切.同...     

助磨剂对绢云母超细粉碎的影响

研究了 3种助磨剂 (硅酸钠、柠檬酸钠、三聚磷酸钠 )对绢云母超细粉碎助磨效果的影响。其中三聚磷酸钠的效果最好 ,硅酸钠的效果最差 ;同时还发现助磨剂三聚磷酸钠在 0 .2 0 %、且磨矿浓度在 40 %左右时助磨效能最好     

The change of phase composition in kaolinite- and illite-rich clay-based ceramic bodies

Raw material for ceramics consists mainly of kaolinite, illite, quartz and feldspar. Three representative clays, a high kaolinitic (HB), illitic- and quartz-rich (KW) and naturally mixed kaolinite–illite (P1) clays of Westerwald area, were chosen for this study [Kromer, H., 1980. Tertiary clays in the Westerwald area. Geol. Jb. D. Rhei D Hanover, 69–84]. The largest and oldest clay mining area of Germany is in the Westerwald area. These clays were mixed with each other and also with K, and Ca–Na feldspar. The high temperature phases of the mixed bodies were of three groups: crystalline phase, amorphous/glassy phase and porosity.The aim of this study was to determine: (1) the effect of kaolinite–illite–quartz ratios, (2) the effect of heat treatment and (3) the effect of feldspar on the fired mineralogy of the fired products. The crystalline phases are cristobalite, mullite, quartz, hematite and anatase. The bodies consist of crystalline phases such as quartz, mullite and cristobalite in a composite structure where crystals and pores are often embedded in amorphous/glassy phase. The formation of mullite and cristobalite is very distinctive in kaolinitic clay, and the structure is dominated by the spiky primary mullite. In the illite/sericite-rich mixtures, the high K content causes a large amount of melt superimposed on the mullite formation. The cristobalite formation is completely suppressed in illite/sericite-rich bodies. After dehydroxylation, metakaolinite and illite/sericite anhydride structures are formed. The persistence of illite/sericite anhydride peaks above 950 °C in KW clay indicates the presence of sericite/muscovite mineral. The disappearance temperatures and firing behaviour of K and Ca–Na feldspar observed within the XRD patterns of mixed bodies are different. K feldspar lines disappear earlier in HB bodies than in KW bodies, but Ca–Na feldspar shows a reverse behaviour. While Ca–Na feldspar peak intensity gradually decreases but persists at 1150–1250 °C, K feldspar suddenly disappears at 1150 °C.     

选矿尾矿中绢云母的回收工艺及应用研究

介绍了选矿尾矿中绢云母矿物的回收及其在橡胶、塑料、涂料中的应用技术。     

驼路沟钴金矿床地质特征与成因初探

驼路沟钴、金矿位于东昆仑褶皱系昆南断褶带内,产于晚古生代二叠系下统石英片岩中。矿床在区域变质作用的基础上,构造活动继续,现有的裂隙再次开启,后期中低温热液沿着构造薄弱带进一步将钴、金元素活化富集成矿。     

尾矿回收超细绢云母工艺及产品应用研究

从选矿尾矿中回收超细绢云母粉工艺是近几年发展起来的一项资源综合利用新工艺。研究从尾矿的工艺矿物学入手，介绍了尾矿的矿物组成及回收工艺的工作原理，着重探讨了超细绢云母粉在橡胶、塑料、涂料等领域中的应用情况。     

某铅锌矿选矿尾矿综合利用试验研究

针对选矿尾矿的特性，采用高选择性的3ACH捕收剂、F—1抑制剂，回收了绢云母含量分别达96％和64％以上的一、二级绢云母产品。经应用试验表明：绢云母一级品在橡胶中的补强性能基本达到了沉淀法白炭黑水平，二级品也全面超过硅铝炭黑的补强性能。     

绢云母粉对NR/SBR/BR共混胶热-力学性能的影响

介绍了绢云母粉在NR/SBR/BR,共混胶中的应用研究,探讨了绢云母粉对NR/SBR/BR共混胶的硫化特性、共混硫化胶常温及高温力学性能、屈挠性能、耐热老化性能以及热传导性能影响.结果表明;随着绢云母粉用量的增大,NR/SBR/BR共混胶的常温及高温力学性能、屈挠性能、耐热老化性能以及热传导性能都有不同程度的改善.当绢云母粉的用量为30份时,NR/SBR/BR共混胶具有良好的温力学性能、屈挠性能和热传导性能.     

硅强粉对炭黑填充天然橡胶胶料生热与导热性能的影响

研究硅强粉对炭黑填充天然橡胶胶料生热与导热性能的影响。结果表明:当以每2份硅强粉替代1份炭黑N234,胶料的t₁₀和t₉₀稍有延长,硫化胶的硬度基本保持不变,其他物理性能变化较小,显示硅强粉具有一定的补强作用;硅强粉用量在20份以内,硫化胶可以保持良好的物理性能;随着硅强粉用量的增大,硫化胶的损耗模量和损耗因子减小,导热性能提高,压缩生热降低。