煤灰

The results show that the ash fusibility can be improved effectively by coal blending and the relationship between ash fusion points and blending coal ratios is nonlinear. Transformation of mineral matters results in the change of ash fu...

结果表明，配煤能有效改善煤灰熔融特性，配煤灰熔点与配比之间是非线性关系；高温下矿物形态的转变是导致配煤煤灰灰熔点变化的主要原因，莫来石有增高灰熔点的作用，石英与钙长石和铁橄榄石等矿物共存时，能够形成低熔点的共晶体使得灰熔点降低。

Analysed the ash components of 154 coal samples,discussed the influence of the main materials and acid/alkali ratio in the coal ash on ash fusibility in the paper,gained the relationship between acid/alkali ratio and ash fusibility.

通过对154个煤样的灰成分进行分析，探讨了煤灰主要成分及煤灰中酸碱比对灰熔融性的影响，并回归出了酸碱比与灰熔融性的关系式，预测结果与实测值具有较好的一致性。

The thermodynamic calculations of the Gibbs free energies for typical multiple phase equilibria in silicate systems were performed,including (1)melting reactions of silicate reactant in processing of the glass-ceramics;(2)sintering reactions in utilizations of nepheline syenite and high- flyash;(3)crystallizing reactions of tobermorite and xonotlite .

对硅酸盐体系的典型多相平衡反应进行了热力学计算，包括：(1)微晶玻璃制备过程中的硅酸盐熔融反应；(2)霞石正长岩和高铝粉煤灰利用技术中的硅酸盐烧结反应；(3)S iO2-CaO-H2O体系和KA lS i3O8-CaO-H2O体系雪硅钙石、硬硅钙石的水热晶化反应；(4)高铝粉煤灰和霞石正长岩烧结产物的溶解反应；(5)Na[A l4]-A l3-H2O体系和Na2SO4-Ca2-H2O体系中α-A l3和CaSO4.2H2O的析晶反应。

The surplus Na2CO3 will later react with nepheline to formalkaline nepheline [(Na2O)0.33NaAlSiO4].The optimal reation condition wasdetermined by the experiments as follows: the ratio of the high-alumina fly ash toNa2CO3 is 1.8:1 by mass,and that the optimal temperature is 850℃ for 90min.The dissolution reaction of nepheline in HCl solution is also thermodynamicallyanalyzed.

对高铝粉煤灰与Na_2CO_3的固相热分解反应的实验研究表明：当Na_2CO_3过量时，过量的Na_2CO_3会与生成的霞石发生反应，生成碱性霞石(Na_2O)_0.33NaAlSiO_4；通过实验确定了Na_2CO_3的最佳用量为：高铝粉煤灰： Na_2CO_3=1.8：1，反应的最佳温度和时间分别为850℃和90min。

The determination of the sulphur trioxide in coal ash with coulometric titration method is analyzed in this paper.

分析了库仑滴定法测定煤灰中三氧化硫的过程，同时针对该法对少数硫酸钙含量特别高的煤灰样测试结果不理想的情况进行了相应的实验探讨。

Otherwise, the hedenbergite formed at 1 100 ℃ in the heating process is the main reason for lowering the ash melting temperature.

低灰熔融煤灰在加热过程中，1 100 ℃时少量铁钙辉石的生成起到了降低煤灰熔融的作用。

The CaO content in ash is related to magnetic petrographic characteristics of coal,and it is possible to predict CaO content in ash with coal macro-petrography.

结果表明：煤灰分中氧化钙含量与其宏观煤岩特征的关系比较密切，用宏观煤岩特征可以预测煤灰中氧化钙的含量。

The influence of coal ash compositions upon fusion and slagging properties is comparatively complex.

煤灰中化学成分对煤灰的熔融和结渣特性的影响比较复杂。

See parents should first soil and soot mixed together, get absorbed, and then in the middle of the small mounds of earth dug a pit, down in Sheung Shui; slowly to shovel coal ash and soil into the water and up until, and very uniform , as the cement spill it, be considered better.

见爸妈先把土和煤灰掺在一起，弄匀，然后在小土堆中间挖一个坑，倒上水；慢慢的把煤灰和土铲进水里和起来，直到和得很均匀，就像抹地的水泥那样，才算好了。

By the use of a weighting method the ash formation distribution of coal with a wide sieve fraction can be obtained.

通常情况下，可以通过机械振筛的方法得到煤灰的粒径分布，清华大学采用 85 0℃的温度下将约 2kg的某窄筛分煤样在马福炉内静态燃烧，然后将收集的灰样在振筛机中用 2 。0mm振幅冷态振筛 5 0min的方法来研究了几种煤种的成灰特性，得到煤灰的初始粒径分布

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。