多种矿物合理组合对工程塑料增强效果显著

硅灰石、滑石、绢云母与工程塑料ABS复合的系统实验表明：单一矿物参与复合时，矿物晶体产生的形态效应和结构效应对复合材料性能起主要影响作用，不同晶体形态和结构的矿物合理组合产生的协同效应对复合材料性能的影响作用更大。复合材料性能优于纯ABS，多矿物复合材料的性能最优，且复合体系的加工性能良好。     

硅灰石——一种新兴的工业矿物

硅灰石具有一系列优异性能，近年来在陶瓷、冶金、涂料、塑料、橡胶、建筑材料、新型复合材料等工业中得到广泛的应用。正因如此，世界硅灰石产，销量一直呈现稳定增长的趋势，其开发市场潜力很大。     

吉林省硅灰石矿床成矿地质条件及成矿规律分析

硅灰石是一种天然产出的钙的偏硅酸盐类矿物[CaSiO3]具有一系列优异的物化特征和独特的工艺性能,主要应用在造纸、陶瓷、塑料、涂料、冶金、绝缘材料等领域,在节约能源"降低成本方面具有独特优势。随着科技的发展,应用范围不断地扩大。硅灰石是吉林省最具优势的非金属矿产资源之一,且找矿潜力很大,通过我省硅灰石矿床找矿标志及成矿规律研究,对指导硅灰石勘查及深部找矿,满足市场日益增长的需要具有重要意义。     

矿物种类和粉体性质与增强性能的关系

矿物粉体作为硅橡胶增强填料尚不多见。传统的硅橡胶增强填料是气相白碳黑。它的粒度细,比表面积大,聚集态结构优良,增强效果佳［１］;但其生产能耗大,成本高,价格昂贵,限制了具有优良性能的硅橡胶制品的广泛使用。如果能通过某些物理化学处理,把价格低廉的天然矿物加工成硅橡胶增强剂,不仅能促进硅橡胶工业的发展,而且可为矿物的高增值开发利用找到一条新的途径［２］。填料的粉体性质（包括粒度、表面积、形状、晶态等）是决定其增强性能的关键因素之一。本文分析探讨了矿物粉体的种类和粉体性质与增强性能的关系。１　实验部分…     

硅灰石表面改性实验研究

实验以湖北大冶硅灰石为原料，初步探讨了硅灰石表达改性的工艺条件。经沉降体积法、表面接触角、红外光谱等方法检测和填充橡胶试验证实，硅灰石得到了改性且其填充性能有明显的提高。     

超细重质碳酸钙粉表面改性与充填聚丙烯试验研究

重质碳酸钙粉是一种普通的无机非金属填料,经过超细粉碎和改性,可以将其变成一种性能优越的功能填料。本文选用鄂西生产的超细重质碳酸钙粉为试验物,对其表面改性的试验方法、改性剂选择及用量、改性条件及改性效果等方面进行了一定探讨。分别采用了表面化学包覆法和干法和湿法两种改性方法对超细重质碳酸钙进行了改性。用表面改性偶联剂中的金属酯偶联剂和硅烷偶联剂,按不同剂量进行不同条件多组改性实验,使超细重质碳酸钙粉由     

影响硅灰石产物性质的工艺研究

为研究硅灰石酸处理产物的比表面积及产率的影响因素,作者设计了一个三因素,两水平的正交实验,并做了最佳条件实验,即验证实验,结果证实了正交实验结论的正确性,即快速加酸,有机助剂和无机助剂,有利于提高硅灰石酸处理产物的比表面积和产率。     

广西平乐硅灰石矿工艺矿物学研究

对广西平乐硅灰石矿的化学成分和矿物组成进行了分析确定，对硅灰石及其伴生矿物的结构构造特征进行了查定，主要对硅灰石中碳质物的赋存特征进行了研究，发现硅灰石矿石中的碳质物分别与硅灰石、方解石、石英等多种矿物以多种形式紧密伴生，认为要提高平乐硅灰石粉的白度，除了要尽可能除去透辉石、石榴石等矿物杂质及含铁、锰等的氧化物杂质外，关键还要使碳质物单体解离，并除去碳质物杂质。     

Compression and coordination changes in pyroxenoids: an EXAFS study of MgGeO3 enstatite and CaGeO3 wollastonite

The evolution of the distortion of MgGeO₃ enstatite and CaGeO₃ wollastonite with increasing pressure, has been investigated using X-ray absorption spectroscopy (XAS) in a diamond anvil cell. At room temperature and low pressure (P<7 GPa), the compressibility of the GeO₄ tetrahedron is higher in MgGeO₃ enstatite (K _[GeO4]∼135 GPa) than in CaGeO₃ wollastonite (K _[GeO4]≥ 280 GPa). The compression mechanisms of the two compounds are different: the whole mineral compressibility of Ge-enstatite appears to be very homogeneous, in contrast to that of Ge-wollastonite which exhibits an inhomogeneous tretrahedral compressibility. This result is consistent with the variation of the Debye-Waller factors of the two compounds with increasing pressure. At higher pressures, the coordination of germanium atoms in the two compounds gradually changes from fourfold to sixfold. For CaGeO₃ the coordination change starts at 7 GPa and is complete a 12 GPa, whereas it starts at about 8.5 GPa for MgGeO₃ and is not complete at 31 GPa. The progressive evolution of the measured Ge-O distances as well as the modification in the X-ray absorption near-edge structure indicate two coexisting different sites rather than a progressive site modification. The transformation is found to be partially reversible in CaGeO₃ wollastonite, whereas it is totally reversible in MgGeO₃ enstatite.     

Reciprocity Effect between Silicate Bacteria and Wollastonite

This paper studied the reciprocity effect between wollastonite and a strain silicate bacterium from purple soil. We analyzed the changes of pH value, glucose (GLU) residual concentration, electrolyte and Mn, Si, Fe etc. in the culture liquid with wollastonite after 48 h. The results show that the GLU wastage of silicate bacteria with wollastonite is 2.5 times of the bacterial contrast. It showed wollastonite could obviously accelerate silicate bacteria growth, but bacterial cell broken and distorted badly have been found by SEM analysis. The solubilization of silicate bacteria to Si element of wollastonite reached above 10 times. At the same time, three apices in FTIR of wollastonite (898 cm-1, 925 cm-1, 962 cm-1) descended obviously after the action of silicate bacteria, which shows that a great deal of Si has dissolved out. So we can get that wollastonite has remarkable effect to the growth of silicate bacteria and silicate bacteria has obvious solubilization to Si of wollastonite.