查询词典 calcining

The photoactive TiO2 was deposited on the surface of magnetic particles using sol-gel coating technique to prepare a novel nanometer-sized magnetic photocatalyst TiO2/SiO2/Fe3O4,and were characterized by means of XRD and TEM,with analysis of effects of calcining temperature and time,catalyst amount as well as radiant time on papermaking wastewater degradation.

采用溶胶-凝胶法，在磁性颗粒表面包覆TiO2，制备了易于固液分离的磁载光催化剂TiO2/SiO2/Fe3O4，通过XRD和TEM对产物的晶体结构、晶粒大小、形貌进行了表征，讨论了焙烧温度、焙烧时间、催化剂用量和光照时间等对TiO2光催化剂处理造纸废水的影响。

Fe and Al in the system were removed by precipitation at pH≈5. Co2 was obtained by precipitation at pH=9.5~10, it was then purified by reprecipitation. Co3O4 was obtained by calcining Co2 at 500℃ for 2h, the purity of which was 99.3%. The recovery rate of Co was 97%. Li2CO3 was obtained by adding Na2CO3 to the mother liquor, the purity of which was 97.8%. The one-time recovery for Li was 73%. The mother liquor can be reused after being cooled to below 10℃ and Na2SO410H2O is recovered.

体系中的Fe、Al从杂质在pH≈5时沉淀除去；Co2在pH为9.5~10沉淀得到，经酸溶解后二次沉淀提纯，500℃煅烧2.0h得Co3O4，其纯度达到99.3%，钴的回收率达97%，母液中Li离子加Na2CO3处理，沉淀得Li2CO3，其纯度达97.8%，锂的一次回收率达73%，母液经冷却至10℃以下除去Na2SO410H2O后可循环使用。

The results show that single phase of La0.3Ca0.7FeO3 can be obtained at 800℃ for calcining 2 h, and the sample with 17.9 nm belongs to rhombohedral crystal system. Moreover, oxygen electrodes have obviously electrocatalytic activity.

结果表明：800℃焙烧2 h得到完整的晶体，晶体粒子大小均匀，粒径为17.9 nm，为菱形晶系；同时该氧电极具有明显的电催化特性。

Based on the characterizations such as SEM、EDS、TG-DTA、FTIR、DRS、XRD、XPS、Zeta potential and Particle size analysis, The effect of preparation conditions including washing and calcining temperature on the photocatalytic activity of N-doped photocatalysists was discussed through the photodegradation of styphnic acid (2,4,6-Trintroresorcinol).

对改性后的催化剂进行了SEM、EDS、TG-DTA、FTIR、DRS、XRD、XPS、Zeta电位测定及粒度测定等表征，研究改性催化剂的微观形貌、元素组成、化学结构、热稳定性、吸光范围、晶型、表面电荷以及在水中的粒径分布。

The invention provides a sulfur oriented adsorption control method for calcining active lime in a rotary kiln comprising the following steps: the rotary kiln calcines the massive limestone using the mixture of the coal fines and active lime fine silts as fuels, the sulfur in the flue gas is adsorbed using the sulfur adsorption and desulphurizing ability of the active lime fine silts, meanwhile the sulfur-adsorbed kiln dust is separated from the calcined active lime by means of screening to get low sulfur-content active lime.

本发明提供的回转窑煅烧活性石灰中的硫定向吸附控制方法，具体是：回转窑以煤粉与活性石灰微细粉粒的混合物为燃料，在对块状石灰石煅烧时，利用活性石灰微细颗粒所具有的硫吸附与脱硫能力对烟气中的硫进行吸附，同时通过筛分将吸附了硫的窑灰与煅烧过的活性石灰分离，而得到低硫含量的活性石灰。

The specific surface area of catalysts decrease with the increase of calcining temperature and the Cu content of catalyst.

催化剂的比表面积随焙烧温度的升高和催化剂负载的铜含量增加，其比表面积下降。

The effects of calcining temperature on structural variations of the phosphors were investigated.

通过测定样品的激发光谱和发射光谱，研究了焙烧温度对荧光粉结构的影响。

Technology standard of the three key elements for calcining belt is also given.

叙述了如何选择煅烧带工艺参数的方法并给出了煅烧带&三要素&的技术标准。

Optimum sintered densities are obtained by calcining in the temperature range of 700°–800°C.

最佳烧结密度可以通过在700-800度的范围内煅烧而获得。

And the relation of calcining temperature and pH to powder characteristcis have been obtained.

针对压敏电阻体系进行了单体元素沉淀的pH值研究，获得了pH值与沉淀量的变化关系。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。