查询词典 sulfate

The invention provides an anhydrous hydrogen fluoride production process; reaction raw materials fluorite powder and sulfate are mixed by an external mixer and enter into a converter with jacket; hot air with the temperature of 350 DEG C to 600 DEG C is fed in the jacket; the fluorite powder and the sulfate have chemical reaction and produce hydrogen fluoride; the produced hydrogen fluoride enters into a scrubber from a furnace header to be washed; the washed hydrogen fluoride enters into an intermediate tank from a condenser, and then receives distillation and degasification to prepare the finished product anhydrous hydrogen fluoride; solid residue is emitted from a furnace tail.

本发明提供一种无水氟化氢生产工艺，反应原料萤石粉及硫酸经外混器混合后进入带有夹套的转炉，向夹套内通入350～600℃的热风，萤石粉和硫酸在发生化学反应生成氟化氢，生成的氟化氢气体由炉头进入洗涤塔进行洗涤，洗涤后的氟化氢由冷凝器进入中间槽，然后经过精馏、脱气制得成品无水氟化氢；固体残渣由炉尾排出。

In order to solve the problem of low quality of potassium sulfate produced from potassium chloride and ammonium sulfate,refining preparation of potassium sulphate is studied.

为了解决氯化钾—硫酸铵法生产的硫酸钾产品纯度低的问题，对硫酸钾精制过程进行了研究。

Potassium sulfate was prepared from potassium chloride and ammonium sulfate by addition of methanol.

以氯化钾和硫酸铵为原料，以甲醇为添加溶剂制备硫酸钾。

The company spirit of "lowest price, best quality, best service" business principles, the industry enjoyed a high reputation at the same time the Company also sells feed-grade ferrous sulfate, trisodium phosphate, barium hydroxide, barium sulfate precipitation and other inorganic products, is the number of brand-name products in central China Chemical Agents.

公司本着"价格最低、质量最好、服务最棒"的经营原则，在业界享有很高的声誉，同时本公司还销售饲料级硫酸亚铁、磷酸三钠、氢氧化钡、沉淀硫酸钡等无机产品，是全国多家名牌化工产品的华中地区代理。

From soil analysis we could seen that orchard soil salt composing types of the experiment area was Chloride-Soda-Sulfate in the 0~20 and 40~60 cm soil layer depth, the 20~40 cm soil layer was Soda-Chloride- Sulfate. Soil pH was less 8.5, and all soil surface layer salt contents less 0.20%, ESP was less 10, HCO3(superscript -)/Cl(superscript -+SO4(superscript 2-) was less 0.5. There were a little salt and basification phenomena with soil of growth better orchards compare.

从土壤的分析结果看，项目区果园土壤盐分组成类型为：0~20 cm和40~60 cm土层为氯化物－苏打－硫酸盐型；20~40 cm土层为苏打－氯化物－硫酸盐型。pH.5，土壤表层盐分的含量均小于0.20%，ESP值小于10，HCO3/Cl(上标-+SO4(上标 2-)。5，与生长良好的果园区土壤相比有轻微的盐化和碱化现象。

Based on groups of single factor experiments, the yield could reached to 88.8% with the conditions: sodamide: cedrol :dimethyl sulfate = 1.6:1:0.9, refluxed 2h in first step reaction, and reacted at room temperature 1h after instillation of dimethyl sulfate, followed refluxed 1h in the second steps.

通过多组单因素实验发现氨基钠：柏木脑：硫酸二甲酯的摩尔比为1.6：1：0.9，第一步反应条件控制在回流2h，第二步反应先室温（25℃）滴加硫酸二甲酯后反应1h，再回流反应1h，得率可达88.8%。

The results show that the mineral admixtures can reduce C3A quantity in the cement material, and the pozzolanic reaction can consume lots of hydration product-Ca2, Which makes specimens close-grained, has obvious prevention function towards the sulfate corrosion. The anti-sulfate corrosion effects of various mineral admixtures from finer to poorer in turn are as follows: 30% fly ash, 30% fly ash + 30% slag, 60% slag, 30% steel slag + 30% slag, 30% steel slag, 30% slag, the blank type.

研究结果表明：加入矿物掺合料降低了试件的胶凝材料中的C3A含量，其火山灰反应消耗了大量的水化产物Ca2，且提高了试件的密实度，对硫酸盐侵蚀具有明显的预防缓解作用；各矿物掺合料的抗硫酸盐侵蚀效果由优到劣依次为：30%粉煤灰，30%粉煤灰＋30%矿粉，60%矿粉，30%钢渣＋30%矿粉，30%钢渣＞30%矿粉，空白样。

The sulfate-reducing-bacteria were immobilized in polyvinyl alcohol to treat wastewater containing zinc. The effects of different crosslinking reagents on the conglobation, cohered efficiency of the carbon source, reduction ratio of sulfate, removal ratio of Zn, and COD of drainage were considered.

摘 要：以聚乙烯醇为包埋介质，对硫酸盐还原菌进行固定化处理；以含锌废水为处理对象，考察不同交联剂对成球性能影响、营养源内聚效果、硫酸盐还原效果、锌离子去除率和出水COD等因素。

To evaluate a biochemical analysis method for heparin sulfate and to experimentally analyze the disaccharide composition and chain length of mouse liver heparin sulfate.

目的评估一种硫酸乙酰肝素的生化学分析方法，并对小鼠肝脏硫酸乙酰肝素的二糖组成及分子量进行生化分析。

A copolymer emulsion used for air filter paper impregnation was studied, the emulsion was prepared by copolymerization of styrence/bulyl acryl ate and oxidized starch using sodium bisulphate/potassium per sulfate as initiator and sodium doddery sulfate as emulsifier.

摘 要：采用半连续乳液聚合的方法，以亚硫酸氢钠-过硫酸钾为引发剂，十二烷基硫酸钠为乳化剂，合成了一种以氧化淀粉、苯乙烯和丙烯酸丁酯为主要原料的空气滤清器滤纸浸渍乳液。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失