硅酸的

The experimental results show that species distribution and the transformation of PASC are different from those of PAC,owing to the interaction between polysilicic acid and hydrolyzed aluminum species.

实际结果表明，在PASC中，由于聚硅酸与铝水解聚合产物间的相互作用，使得铝的水解聚合形态分布及转化情况发生了变化。

Mechanism of flocculation and structure characterization of PSAZ and PSMZ were studied. By XRD instrument analysis, PSAZ and PSMZ which is composed with Zn~(2+)、Al~(3+)or Mg~(2+) and polysilicic acid is amorphous polymer.

对两种絮凝剂絮凝机理和结构进行了研究。X射线衍射图谱分析表明，这两种絮凝剂并非简单的共混物，而是Al~(3+)、Zn~(2+)或者Mg~(2+、Zn~(2+)与聚硅酸形成的无定形聚合物。

Self-made PSFA under the optimum conditions was used in the treatment of single practical water sample. Experimental results show that PSFA has better coagulation property than that of traditional coagulants Fe2(SO4)3 and Fe2(SO4)3 together with coagulant aid polysilicic acid;and the dosage of PSFA is less. The coagulation mechanism of PSFA was also discussed in this paper.

用PSFA混凝剂处理实际水样，并与单独投加混凝剂硫酸铁及硫酸铁加助凝剂聚硅酸效果进行了比较，结果表明，PSFA混凝剂的效果最好，而且用药量少；同时还对PSFA混凝剂的混凝机理进行了讨论。

The influence of environmental factors with different sulfate types (Na2SO4, MgSO4) and temperatures (5, 20 ℃) on various kinds of sulfate attack of cement mortars was studied, and the special environmental factors for the formation of thaumasite were confirmed.

研究了硫酸盐种类(Na2SO4，MgSO4)及温度(5 ℃，20 ℃)等影响因素对水泥砂浆硫酸盐侵蚀类型的影响，以明确碳硫硅酸钙型硫酸盐侵蚀的特性环境条件。

The influence of environmental factors with different sulfate types (Na2SO4,MgSO4) and temperatures (5,20℃) on vari- ous kinds of sulfate attack of cement mortars was studied,and the special environmental factors for the formation of thaumasite were confirmed.

研究了硫酸盐种类(Na_2SO_4，MgSO_4)及温度(5℃，20℃)等影响因素对水泥砂浆硫酸盐侵蚀类型的影响，以明确碳硫硅酸钙型硫酸盐侵蚀的特性环境条件。

The invention relates to a middle-density pulp hydrogen dioxide dual-tower blanch method, which comprises:(1) washing and concentrating the pulp;(2) adding NaOH in 0.5-1.5%, sodium silicate in 0.5-3%, bitter salt in 0.05-0.5% and barium dioxide in 1.0-2.5%,, and adding slurry to 70-100Deg. C;(3) 1# blanch tower blanches, while the temperature is 70-100Deg. C, and the reaction time is 30-90mins;(4) 2# blanch tower blanches, while adds barium dioxide in 0.5-1.5% and some blanch agent, while keeps the temperature in 70-100Deg. C and the reaction time is 30-90mins;(5) adding water, and washing to attain blanch slurry.

本发明公开一种中浓纸浆过氧化氢双塔漂白方法，包括(1)纸浆洗涤浓缩；(2)加入绝干浆重量的0.5～1.5％NaOH、0.5～3％硅酸钠、0.05～0.5％硫酸镁和1.0～2.5％过氧化氢等，将纸浆加热至70～100℃；(3)1#漂白塔漂白：温度为70～100℃，反应时间为30～90分钟；42#漂白塔漂白：补加0.5～1.5％的过氧化氢及适量漂白助剂，保持温度70～100℃，反应30～90分钟；(5)加水稀释、经洗涤后得漂白浆。

The experimental result shows that under the condition of lixiviating time being 2.5~3 hours, lixiviating temperature being 110℃, sulphuric acid thickness being 6 mol/L, hydrochloric acid thickness being 3 mol/L, liquid-to-solid quality ratio being 4∶1, the extraction rate of iron will reach 95.7%~96.3% in mass fraction.

丁文武 淮海工学院，连云港 222005通过正交实验研究了用盐酸、硫酸、褐铁矿和硅酸钠制备聚硅氯化硫酸铁絮凝剂的工艺条件。实验结果表明，浸取时间为2.5～3 h，浸取温度为110℃，硫酸浓度为6 mol/L，盐酸浓度为3 mol/L，质量液固比为4∶1，铁的浸出率可达95.7%～96.3%。

The H〓O〓 consumption decreased effectively when both sodium silicate and magnesium sulphate were present in bleach liquor.

硅酸钠和硫酸镁的共同存在能有效降低H〓O〓的实际消耗量。

Polyaluminum silicate chloride coagulant was prepared in laboratory from kaolin and Na_(2)CO_(3) under the process of high-temperature roasting,washing and acid dipping.

以高岭土为原料，采用碱熔融水洗酸浸工艺制备聚硅酸铝絮凝剂，初步研究了该絮凝剂制备的工艺条件及pH对产品絮凝沉降性能的影响。

Melt the raw meal with the proper components to be partially smelted, to get the clinkers with the silicic acid as the main component and few contents of the ferric oxide.

以适当成分的生料烧至部分熔融，所得以硅酸钙为主要成分，氧化铁含量少的熟料。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。