Carbonate cement occupies lots of pores, it does not favor the preservation of the pore.
碳酸盐胶结物连生胶结占据大量孔隙，不利于孔隙的保存。
The carbonate cement, influenced by the salinity to some degree, is mainly inorganic with few relation to biogas.
碳酸盐主要为无机成因，少量与生物气有关，其含量受盐度的影响。
The main type of carbonate cement was calcite cementing, with little ferrocalcite cement and rare ferrodolomite cement.
碳酸盐胶结的主要类型是方解石胶结，同时也含有少量的铁方解石和极少量的铁白云石胶结。
Secondly, the boundary means a relative longer residence time of the sediments, which increasing the content of carbonate cement in reservoirs under the boundary.
其次，层序界面代表相对较长的沉积驻留时间，这使得在层序界面之下储层内碳酸盐胶结物含量增加；
The main pore type of the reservoir is primary remained intergranular pore, the dissolution of the feldspar and early carbonate cement results in the secondary pore.
储层以原生剩余粒间孔隙为主，长石及早期碳酸盐胶结物的溶解是形成次生孔隙的主要原因。
Carbonate cement is universally more than 10% in sandstones of the upper Yungang formation in Yungang Grottoes area. It's mainly composed of ferriferous calcite and ferriferous dolomite.
云冈石窟地区云冈组上段砂岩中碳酸盐胶结物的含量普遍在10%以上，其主要矿物成分为含铁方解石和含铁白云石。
Meanwhile, calcium ions in the cement also absorb moisture and carbon dioxide, forming calcium carbonate -- the material found in seashells.
同时，水泥中的钙离子也会吸收水分和二氧化碳，形成碳酸钙——碳酸钙是贝壳的主要成分。
The thermal decomposition of calcium carbonate is an important chemical reaction during cement raw meal decomposition, on which decomposition rate of raw meal and output of clinker depend.
碳酸钙热分解是分解炉内水泥生料分解的一个重要反应，对水泥生料的分解率和熟料产量有较大的影响。
Pores are closely correlated with sandstone fabric, and are more easily generated in medium grained sandstone where feldspar content is high(>37%) and cement content is low(carbonate<50%).
孔隙与砂岩组构密切相关，孔隙更容易产生于长石含量高（>37% ）、且胶结物含量低（碳酸盐<5 % ）的中粒砂岩中。
Principal components: calcium carbonate, calcium oxide, silicate, cement and additives.
主要成分：碳酸钙、氧化钙、硅酸盐水泥和添加剂。
The above materials cover pigment, dyes, ferrous powder, cement, fly ash, dried mortar powder, antimony oxide, talc powder and calcium carbonate.
颜料、染料、铁粉、水泥、粉煤灰、干粉砂浆、氧化锑、滑石粉、碳酸钙等。
From the point of view of texture, Carbonate rocks are mainly composed of grains, mud, cement crystals and bio-framework.
本文主要是介绍结构分类。从结构观点看，碳酸盐岩由颗粒、泥、胶结物、晶粒以及生物格架五种结构组分组成。
When the dispersioning device is used, the classification accuracy for cement raw material is evidently higher than that of heavy calcium carbonate.
结果表明，在高风速范围内增加打散装置对分级粒径的影响不大，但可以明显提高分级精度；
When the dispersioning device is used, the classification accuracy for cement raw material is evidently higher than that of heavy calcium carbonate.
结果表明，在高风速范围内增加打散装置对分级粒径的影响不大，但可以明显提高分级精度；
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