石灰石

We're able to provide granite, marble, slate, sandstone, quartzite, limestone, andesite, basalt, travertine, lava of China origin, but also able to supply granite, marble, limestone or travertine from all over the world, such as America, Brazil, Italy, Spain, Portugal, Norway, Australia, Finland, India, Saudi Arab, Iran, Turkey and so on.

我们还可以提供花岗岩，大理石，板岩，砂岩，石英石，石灰石，安山岩，玄武岩，钙华，熔岩的中国血统，而且还能够供应花岗岩，大理石，石灰石或钙华来自世界各地，如美国，巴西，意大利，西班牙，葡萄牙，挪威，澳大利亚，芬兰，印度，沙乌地阿拉伯，伊朗，土耳其等。

The upside in the coping of reative cell and flank sets aspersion shower nozzle, time, aspersion of surface of grey grain of mensurable Xiang Shi, make the surface of limestone covers film of a thin water, when flue gas has spread every reative cell, the SO2 in flue gas and the limestone grain that covering water film undertake osculatory, in entering water film through diffusing, with limestone happening chemistry reacts, 80% above are the by-product that reaction produces gesso crystal.

反应室的顶部和侧面中上部设有洒水喷头，定时，定量向石灰颗粒表面洒水，使石灰石的表面覆盖一层薄水膜，当烟气流过每个反应室时，烟气中的SO2和覆盖着水膜的石灰石颗粒进行接触，通过扩散进入水膜中和石灰石发生化学反应，反应产生的副产物80%以上为石膏晶体。

He found that the red pigment proved to be iron oxide, hematite; a yellow consisted of clay containing iron or yellow ochre; a blue color was a finely powdered glass; and a pale blue was a copper carbonate, probably azurite; green were malachite; black was charcoal or boneblack; gray, a limestone mixed with charcoal; and a quantity of pigment remaining in a paint pot used in the decoration, contained a mixture of hematite with limestone and clay.

他发现红颜料是铁的氧化物赤铁矿；黄色颜料由含有铁或黄赭色粘土组成；蓝颜色为细微的玻璃粉；而普蓝就是碳酸铜，或许是蓝铜矿；绿颜料为孔雀石；黑色为木炭或骨黑；灰色，石灰石混合木炭而成；而一些颜料残留在用于彩绘装饰的颜料瓶里，含有赤铁矿与石灰石及粘土的混合物。

The European Prestandard prEN 197-1 identifies two types of Portland limestone cement containing 6–20% limestone and 21–35% limestone, respectively. It is expected that the future world production and use of Portland limestone cement will be significantly extended.

欧洲prestandard产前197-1列出两种含有6-20%波特兰水泥灰岩、石灰石石灰石21-35%，分别预计未来世界石灰石硅酸盐水泥的生产和使用将大大延长。

The constructor-China Sinoma International Engineering Co., Ltd chosed the process of sieving crushing system, based on experiment and by improving process and operation, sucessfully improved the lower grade limestone's w by 2% and reduced the total content of silicoaluminate by 9%, realized using lower grade limestone as cement raw material.

承建方中国中材国际工程股份有限公司，在实验研究的基础，采取了石灰石筛分破碎系统的工艺方案，并通过优化工艺布置和操作控制举措，使低品位石灰石的w值提高2%以上，硅铝类氧化物的质量分数合计下降9%，成功实现了低劣品位石灰石作为水泥生产原料成为可行。

Now,the method of dynamics is used in normal applications by measuring the sulphation degree of the solid calcium oxide to infer the reaction activity of limestone;but it is not enough on condition of many types of impurity the limestone composition,which has considerable influence on the desulphurization reaction activity of limestone.

目前，国内外主要采用动力学方法，通过测定固态CaO的硫酸盐化程度来推断石灰石的反应活性。但是这在石灰石中含有许多其它杂质成分时是不够全面的，因为这些杂质成分对石灰石的脱硫反应活性影响很大，不能忽视。

The experimental study on improving the pore structure of three kinds of limestone samples with the flash evaporation method is presented.

本文对3种不同产地的石灰石进行了闪蒸改性处理，对改性石灰石颗粒的孔径分布进行了测定，研究了压力、温度等参数对石灰石闪蒸改性的影响。

In this paper, the principle of the application of the lime and the lime stone to the wet-FGD and CFB desulphurization ,the factors that influence the reaction velocity are introduced.

着重对石灰石用于石灰石—石膏湿法脱硫和CFB锅炉脱硫的原理、影响反应速率的因素以及石灰石品质对两种脱硫工艺的影响进行了分析，并对石灰用于脱硫反应的原理及其品质对脱硫工艺的影响进行了探讨。

The study shows that the activation energy of most shell is 1/3-2/3 of the limestone, the product-layer coefficient magnitude is 1 magnitude higher than that of limestone, and the specific surface area, specific pore volume, and the average pore radius are all bigger than that of limestone. So shells are fit for coal combustion sulfur retention in high temperature (900-1000℃).

贝壳与石灰石的比较性实验表明：大部分贝壳的固硫反应活化能是石灰石的1／3-2／3，产物层扩散系数比石灰石高出一个数量级，内部微观结构如比表面积、比孔容、最可几孔半径等都比石灰石大，贝壳更适合作高温（900℃-1000℃）下的燃煤固硫剂。

The experimental results show that when TCAR is about 700 ℃ XN for limestone is maximum, and the optimum TCAR for dolomite is about 650℃. Although XN for limestone is much higher than dolomite, the difference of their YN is little when TCAR is in 650~700 ℃. And if TCAL is beyond 1050 ℃ XN for limestone decays sharply, but it is negligible to dolomite. XN for dolomite is far higher than limestone in the high TCAL. XN for limestone decreases with the particle size increasing, and there is an optimum particle size range with particle size increasing which XN for dolomite reaches maximum in. The particle size plays a more important role in limestone carbonation process than dolomite.

结果表明：TCAR为700℃时石灰石的XN最高，白云石则在650℃时XN最高，在650～700℃时白云石的XN远高于石灰石，但它们的YN相差不大；当TCAL超过1050℃时石灰石的XN急剧衰减，而白云石的XN则衰减程度不大，在高温煅烧时白云石的YN比石灰石更高；随粒径的增大，石灰石的XN逐渐减小，而白云石则存在最佳的粒径分布使XN最大，粒径的变化对石灰石的XN影响更大。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。