查询词典 sulphate

Studied to phosphoric acid and aluminum hydroxide as raw materials, synthetic product of the phosphoric acid sulphate series.

研究了以磷酸和氢氧化铝为原料，合成了磷酸铝系列产物。

The influence of phosphorous slag on the setting time of Portland cement and improvement by some additives such as sodium sulphate,calcined gypsum and calcined alunite and synthesized additive were studied.

磷渣是电炉制取黄磷工业的一种工业废渣，在用电炉法制取黄磷时，所得到的以硅酸钙为主要成分的熔融物，经淬冷为粒化电炉磷渣，简称磷渣[1，2]。

Multistep deposition process has been adopted in the preparation of superfine inorganic composite antibacterial powder, Ag~+ as crystal nucleus, packed outside by the hydroxid and phosphate precipitate of Ti and Zr elements etc., The optimal process conditions have been found from one-factor influence tests and multi-factor orthogonal test,and the optimal process conditions were: Ag iron was imported by silver ammine, and then 100ml Titanyl sulphate solution mixing with zirconium sulfate keep hot at 90 ℃ for 30 mins, and the Zr/Ti ratio is 0.15,and Na_2HPO_4 was added in the end.

超细无机复合抗菌粉体的制备采用以Ag~+沉淀物作为晶核，外包裹Ti、Zr等金属的氢氧化物沉淀和磷酸盐沉淀物的多步沉淀工艺，并利用单因素和正交试验法对制备工艺进行了优化，其最佳工艺条件是：Ag~+以银氨络合物引入，沉淀钛锆的反应时间为0.5h，反应温度为90℃，水解反应时体系总液量为100ml、Zr/Ti为0.15，沉淀物经水洗、干燥，于700℃煅烧4.0h；即得最终产品。

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。

Its main products are high efficiency compound fertilizer ammonium phosphate, sulphate chemical products, cement and bromine-, but the use of raw materials are generally from the fertilizer factory waste and ordinary sea water.

它的主要产品是高效复合肥磷铵，化工制品硫酸、溴素以及水泥等，但使用的原料却是一般化肥厂排出的废料和普通的海水。

Microorganism desulphurization technology is important for the society, enviroment and economy due to its such advantages as easy process, low cost, less consumption, needless of high temperature, pressure and catalyzer, and no repollution in the treatment of sulphur-containing pollution. The sulphate waste water biodesulphurization technique and sulphide waste water biodesulphurization technique were designed out based on the metabolic mechamism of sulphate reducing bacteria and colorless sulpher bacteria.

微生物法脱硫技术具有工艺简单、成本低、能耗少，无需高温、高压、催化剂、无二次污染等优势，是治理含硫污染物的重要技术，具有重要的社会、环境和经济效益。

From the beginning of the 1980's the visibility dramatically deteriorated,obviously increasing haze weather,in which there are three big fluctuations,respectively showing the periods of pollutions of dust,sulphate and dust,fine particle from photochemical process and sulphate and dust accompanying the developmen...

自1980年代初开始，该地区的能见度急剧恶化，灰霾天气显著增加，其中有3次大的波动，分别代表广州地区经济发展相伴随的粉尘污染、硫酸盐加粉尘污染、光化学过程的细粒子加硫酸盐加粉尘的复合污染时期。

So far research on antibiotic production wastewater treatment has mainly focused on the removals of organic pollutant and sulphate and hydrogen sulfide produced during sulphate removal with anaerobic process.

迄今为止，虽然对抗生素废水处理技术的研究很多，但基本上是针对有机物和硫酸盐以及硫酸盐在厌氧过程中产生的高浓度硫化氢去除的研究，而对脱氮除磷、脱色以及剩余污泥处理的研究，尤其是综合治理技术的最优化和工程实际应用的研究很少。

The physical,chemical character and usage of magnesium sulphate were introduced in this paper,the production method and process of magnesium sulphate were also expounded.

介绍了硫酸镁的物理、化学性质和用途，阐述了硫酸镁的生产方法及工艺流程：硫酸法，盐湖苦卤法，苦卤复晒法，高温盐溶浸法，震荡转化法，碳酸化法，二氧化硫催化法。

The calculated results show that activity coefficients of NiCO3 in sodium sulphate solutions are less than that in sodium chloride solutions, and the solubilities in sodium sulphate solutions are larger.

估算结果表明，与氯化钠溶液体系相比，碳酸镍在硫酸钠溶液体系中的活度系数较小，因而溶解度较大。

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％。