硅酸

This research has detail summed up the characteristics between aluminosilicate weathering and the weathering of carbonate rocks, and is pointed out the similar weathering processes for aluminosilicate and carbonate rocks at the second stage.

本研究工作系统地总结了碳酸盐岩和硅酸岩风化的特征异同，并且指出碳酸盐岩第二阶段的风化类似于硅酸岩的风化。

The traditional ceramic semifinished materials are the aluminum silicate system, the production phase are mainly the mullite, the solid phase reaction temperature are quite high, generally in 1200℃ about; But after joining the wollastonite, turns the calcium silicate system, the high temperature resultant for the anorthite and the cristobalite, reduced the solid phase reaction temperature largely, approximately for 1000℃~1050℃, and the anorthite assumes acicular.

传统的陶瓷坯料为硅酸铝系统，生成的物相主要为莫来石，固相反应温度比较高，一般在1200℃左右；而加入硅灰石后变成硅酸钙系统，高温生成物为钙长石和方石英，大幅降低了固相反应温度，大约为1000℃～1050℃，且钙长石呈针状。

The polysilicic acid is compounded with polyferric chloride sulphate under certain conditions, then the polysilicic acid-polyferric chloride sulphate flocculence is prepared. The study shows that: when the Cl-/SO42-molar rate is 1:1, the Fe/Si molar rate is 2:1, the flocculence has the best effect on paper-making waste water treatment.

将聚硅酸与聚合硫酸氯化铁在一定条件下复合，制备聚硅酸聚合硫酸氯化铁复合型絮凝剂，研究表明：在氯根与硫酸根物质的量比为1：1，且铁与硅物质的量比为2：1时，制得的复合型絮凝剂对造纸废水具有最佳处理效果。

The polysilicic acid is compounded with polyferric chloride sulphate under certain conditions, then the polysilicic acid-polyferric chloride sulphate flocculence is prepared.

将聚硅酸与聚合硫酸氯化铁在一定条件下复合，制备聚硅酸聚合硫酸氯化铁复合型絮凝剂，研究表明：在氯根与硫酸根物质的量比为1∶1，且铁与硅物质的量比为2∶1时，制得的复合型絮凝剂对造纸废水具有最佳处理效果。

Fluosilicic acid,which is the byproduct from phosphate fertilizer factory,reacts with ammonium hydrocarbonate to obtain ammonium fluosilicate,then reacts with ammonium carbonate to form settled SiO 2,after filtration,water washing,drying and calcining,high purity SiO 2 with less than 10×10 -6 metal impurity and less than 10×10 -9 uranium and thorium respectively is made.

由磷肥厂副产氟硅酸同碳铵反应得氟硅酸铵，再和碳铵反应生成SiO2 沉淀，经过滤、水洗、干燥、煅烧得高纯SiO2 ，其金属杂质总含量小于 10× 10 -6，含放射性元素铀和钍各小于 10× 10 -9，通过实验获得了适宜的工艺条件，反应温度 70℃～ 80℃，反应时间 1 5h～ 2 0h ，配料比n(NH4HCO3 )∶n(NH4 2 SiF6 =4 4。

The alcohol is used as medium to generate hydrolyzate of ethyl silicate in traditional ceramicmold casting process.

传统的水解工艺是采用酒精作为中间媒介来促使硅酸乙酯与水的接触，进而发生水解反应，生产硅酸乙酯水解液。

By using the sodium silicate and waste hydrochloric acid as raw materials, polysilicic acid is prepared. The study shows that, under the conditions of the concentration of sodium silicic acid being 4%-8%, the pH, and the reaction time being about 5 hour, the stable polysilicic acid is made.

以水玻璃、废盐酸为原料，制备聚硅酸，研究表明：在硅酸钠浓度为4%~8%，pH小于4的条件下，室温熟化5h左右，可制得稳定的聚硅酸。

By knowing development situation domestically and abroad of coagulant, we have prepared two kinds of inorganic polymer flocculant which is polysilicic-acid containing aluminum sulfate and zinc sulfate and Polysilicic acid containing magnesium sulfate and zinc sulfate on the basis of preparing the polysilicic acid.

本文通过较全面的分析国内外絮凝剂的发展情况，在制备聚硅酸的基础上，制备了两种新型的锌系无机高分子絮凝剂(聚硅酸铝锌和聚硅酸锌镁)。

By using the hydrochloric acid pickling wastewater and scrap iron asraw materials ,the polysilicic acid - polyferric chloride flocculant isprepared under different conditions.

以盐酸酸洗废液和废铁屑为原料，制备了聚硅酸聚合氯化铁复合型絮凝剂，研究了聚铁中铁浓度、聚合硅酸浓度、聚合硅酸pH值、n∶n及复合熟化时间等因素对絮凝性能的影响。

Ferric-polysilicate coagulant is a new type of inorganic polymer flocculants; its made up by adding ferric to polysilicate-sulfate, and it has not only the property of electricity neutralization of iron, but also the property of adsorption and framing of polysilicate-sulfate. It is more efficient than traditional flocculants in depurating wastewater.

聚硅酸铁是一种新型的无机高分子絮凝剂，是把金属铁盐引入到聚硅酸中复制而成，兼有铁盐的电中和能力及聚硅酸的吸附架桥能力，净水能力高于传统的絮凝剂。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。