查询词典 volatile alkali

The preventive measures for the harmful defects of alkali metals are as follows: 1, reducing the alkali metals content in the raw materials; 2, increasing the MgO content of the sinter , decreasing the basicity of slag , decreasing the Si content of the pig iron, increasing relative slag volume; 3 , introducing prereduced ore pellets or partly reducted sinter; 4increasing the ability of coke resisting alkali metals; 5, using refractories that have the ability of resisting corrasion of alkali metals; 6 , cleaning the blast furnace periodically. The above recommendations are necessary for decreasing the circulation and accumulation of alkali metals effectively in blast furnace, reducing the harmful influence of alkali metals on blast furnace, increasing the smelting intensity, decreasing the coke rate, improving the gas permeability.

基于碱金属对高炉冶炼的上述危害，本文结合湘钢高炉的实际生产情况，通过理论分析、计算以及其他钢厂防治碱害的经验，提出防治高炉碱害的措施：1、减少入炉原、燃料的碱金属含量；2、提高烧结矿中的MgO含量、降低炉渣碱度、降低生铁含硅量、适当增加渣量；3、采用预还原的金属化球团或部分还原的烧结矿；4、提高焦炭的抗碱能力；5采用抗碱侵蚀的耐火材料；6、周期性性洗炉，以有效地减少碱金属在高炉内的循环富集，降低碱金属对高炉的危害，提高高炉的冶炼强度，降低焦比，改善高炉透气性。

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The invention relates to a continuous process for recovering caprolactam from aqueous caprolactam product, said aqueous caprolactam product comprising caprolactam, impurities, and water, said process comprising: adding alkali hydroxide to the aqueous caprolactam product, in an amount of not more than 100 mmol alkali hydroxide per kg of caprolactam; reacting at least part of the added alkali hydroxide to form alkali amino caproate, to obtain a caproate-enriched caprolactam product; and distilling the caproate-enriched caprolactam product at reduced pressure.

本发明涉及从含水己内酰胺产物中回收己内酰胺的连续方法，所述含水己内酰胺产物包括己内酰胺，杂质，和水，所述方法包括：以不超过100mmol碱金属氢氧化物/kg的己内酰胺的量将碱金属氢氧化物加入到含水己内酰胺产物中；让所添加的碱金属氢氧化物的至少一部分起反应，形成碱金属氨基己酸盐，以获得了富含己酸盐的己内酰胺产物；和减压蒸馏富含己酸盐的己内酰胺产物。

By the medium of experiment and research to alkali-aggregate reaction of Shan XI Face Concrete,We discussed respectively from total alkali in concrete, alkali reactiveness of aggregate and damp environment that alkali-aggregate reaction may be damaged.

提要：本文通过珊溪面板混凝土碱骨料反应的试验研究，分别从混凝土总碱量，骨料的碱活性及发生碱骨料反应破坏的潮湿环境进行了论述，认为珊溪面板混凝土是安全的，不会发生碱骨料破坏。

The alkali dosage depends mainly on the constituents and property of material and the quality requirements for pulp: more alkali dosage will speed up cooking process, reduce the hardness of pulp and improve the bleachability of pulp; but excessive alkali dosage will lower the pulp yield and physical intensity, while too less alkali dosage will result in harder and darker pulp, uneasy to bleach, too much screenings, and even extending cooking time cannot guarantee the reaction of delignification.

用碱量主要取决于原料的组成和性质及对纸浆的质量要求：加用碱量有利于加快蒸煮速度降低纸浆硬度和提高纸浆的可漂性：但过高却会降低纸浆得率和物理强度，如过低时，成浆较硬而色暗，不易漂白而且筛渣多即使延长蒸煮时间也难以保证脱木素反应进行。

Detailed geology- petrology-mineralogy study shows that late Triassic-early Jurassic granites can be divided into 4 groups: granodiorites, monzonitic-K syenogranites mainly, alkali feldspar-alkali granites and syenite, Middle Jurassic granites is composed of quartz diorites-granodiorites and monzonitic granites, the main rock type includes granodiorites and monzogranites; Early Cretaceous granites include alkali gabbro, alkali granites and granodiorites, and these rocks composed bimodal igneous rock group.

详细的地质-岩石矿物学研究表明，晚三叠-早侏罗世花岗岩可以划分成四种岩石组合，即花岗闪长岩组合、二长花岗岩—正长花岗岩组合、碱长花岗岩—碱性花岗岩组合和正长岩组合，其中以二长花岗岩—正长花岗岩组合为主；中侏罗世花岗岩由石英闪长岩-花岗闪长岩组合和二长花岗岩组合构成，岩石类型以花岗闪长岩和二长花岗岩为主；早白垩世出现了碱性辉长岩、碱性花岗岩和花岗闪长岩，构成双峰式火成岩组合。

Our main products are alkali, alkali-free glass fiber rovings Plaid, 7628 electronic-grade glass fiber cloth, in the alkali, alkali-free glass fiber grid cloth and so on.

本厂主要产品有中碱、无碱玻璃纤维无捻粗纱方格布，7628电子级玻璃纤维布，中碱无碱玻璃纤维布和网格布等。

Result The results showed that 34 compounds of the volatile oil were identified, which accounted for 90.10% of all. The main chemical compounds were camphene (10.030%), beta-pinene (8.826%), limonene (7.935%), caryophyllene (12.457%). The antibacterial experiments of the volatile oil showed that the volatile oil had antibacterial activities to Staphylococcus aureus, but had no inhibition against Escherichia coil and Rhodotorula glutinis.

结果］经毛细管色谱分析分离，共确认出其中34种成分，所鉴定出化学成分的质量占总量的90.10%以上，应用色谱峰面积归一法分析各成分的质量分数，其主要化学成分是莰烯(10.030%)、-β-蒎烯(8.826%)、柠檬油(7.935%)、丁子香烯(12.457%)；并发现其化学成分对金黄色葡萄球菌有较强的抑制作用，对大肠杆菌、红酵母无明显作用。

Aromatic solvent evaporation of volatile is relatively low in calories, fast and dissolubility, while the larger class of toxic solvents; solvents volatile dissolubility good, fast, low cost, but a large cretonne; alcohols in dissolubility, not volatile speed and above two categories, but non-toxic, tasteless, pollution-free.

芳香类溶剂蒸发热量比较低、挥发速度快、溶解性能高，但该类溶剂毒性较大；酯类溶剂溶解性能好、挥发速度快、成本低，但气味比较大；醇类溶剂在溶解性能、挥发速度上都不及以上两类，但是无毒、无味，没有污染。

Results: the yield rate of the collected volatile oil of artemisia indica and artemisia feddei was 0.32%, 0.29%, respectively. the main constituents of them were as follows: eucalyptol, camphor, borneol, terpineol, cubebene, caryophyllene, caryophyllene oxide, germacrene d, etc, which was similar to the constituents of volatile oil from artemisia argyi. but the contents of volatile oil were different in different medicinal materials. longiverbenone with high content in artemisia feddei was can not be detected in artemisia indica and artemisia argyi.

结果：广西产五月艾与细叶艾挥发油的得率分别为0.32%、0.29%；五月艾、细叶艾和艾叶挥发油中均含有桉油精、樟脑、龙脑、松油醇、荜澄茄油烯、石竹烯及其氧化物、大根香叶烯d等药效成分，但各成分在不同药材中的含量存在一定差别；此外，细叶艾挥发油中含量较高的长叶马鞭烯酮在五月艾和艾叶挥发油中均未检出。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。