焙烧

In this paper,the selective reduction roasting experimental study is chiefly introduced,in which coal is used as reductant.

研究确定了最佳工艺条件为：采用烟煤做还原剂，还原剂加入量为矿量的10%；粒度在0～3mm，-0.074mm含量约占25%；焙烧时间20～30min；焙烧温度700～750℃。

The results show that the optimum preparation conditions of CuO/AC catalyst are as follows:the concentration of Cu（NO3）2 is 3%,soakage temperature 30 ℃,soaking time 6 h,calcinating temperature 300 ℃,and calcinating time 3 h.

研究结果表明，硝酸铜-AC制备CuO/AC催化剂的最佳条件为：硝酸铜质量分数为3%，浸渍温度为30 ℃，浸渍时间为6 h，焙烧温度为300 ℃，焙烧时间为3 h。

The optimal processing conditions are as follows: roasting temperature at 1 000℃, roasting time for 40 min, the ratio of NbH dosage to theoretic dosage at 1.1. The specific capacity of niobium suboxide of preparation by agate grind procedure is 69.50 mF·V·g-1, the loss is 11.25%, the leakage current is 1.8×10-4A·F-1·V-1, and the electrical properties are better than that of the national standard (GB/T 3136-1995) of FTa16-300 tantalum powder for capacitor.

用正交试验法及方差分析对玛瑙研磨工艺进行优化，得到制备低价铌氧化物最佳条件是：焙烧温度为1 000℃，焙烧时间为40 min， NbH用量与理论量之比为1.1，所制得的产物杂质含量低，比容为69.50mF·V·g-1，损耗为11.25%，漏电流为1.8×10-4A·F-1·V-1，其电性能指标高于FTa16—300电容器钽粉国家标准(GB/T 3136—1995)所规定的值。

By calculating theoretically and testing, Topgallant void ratio of gas grid was determined.At high temperature,the charge material was suspending in gas bed,experiments of different magnetizing roasting temperature and roasting duration have been run by leading to reductive atmosphere containing CO.

在高温条件下，通入含CO还原气体，使物料处于悬浮状态，进行了不同磁化焙烧温度及时间试验，查明在650℃～760℃，焙烧时间10～60秒内，可以使菱铁矿(FeCO_3)、赤铁矿(Fe_2O_3)快速转变为磁铁矿(Fe_3O_4)。

In addition, unroasted kaolinite reacted with NaOH solution in the course of digestion and indissolvable product 3Na〓O·3Al〓O〓·6SiO〓·4H〓O was formed. When roast temperature was not high enough, metakaolinite could also react with NaOH solution and the product was 3Na〓O·3Al〓O〓·6SiO〓·4H〓O or Na〓O·Al〓O〓· 1. 85SiO〓·5. 1H〓O .

同时，试验研究结果还表明，未经焙烧处理的高岭石在试验中溶出脱硅条件下与NaOH溶液反应生成不溶于水的3Na〓O·3Al〓O〓·6SiO〓·4H〓O，焙烧温度不够高时生成的偏高岭石也与NaOH溶液反应生成3Na〓O·3Al〓O〓·6SiO〓·4H〓O或Na〓O·Al〓O〓·1.85SiO〓·5.1H〓O。

The dust was first mixed with NaBH4 powder to adjust the H/Cl ratio. Then, the sample was roasted at low temperature to promote the efficiency of dehalogenation/hydrogenation reaction. By way of Cl- titration, it was found that the roasting temperature (300℃~500℃), roasting time (5 to 25 minutes) and H/Cl ratio (6.0 to 20.0) would change the dissolution of Cl- from 0.0% to 17.5%. After caustic roasting and leaching of the dust, the zinc (17.4 g/l) and lead (1.6 g/l) recovery ratio were found to be 82.7% and 61.8% respectively.

利用NaBH4在低温可促进氯化冶金反应的进行，经由氯离子浓度滴定，发现随著焙烧时间、温度及H/Cl比值之调整，氯离子之溶出量变化亦相对改变，此结果说明在使用NaBH4调配H/Cl比值由6.0~20.0的变化下，烟尘中的氯成分在低温(300℃~500℃)焙烧5~20分钟，可与金属氧化物发生氯化反应，氯离子溶出量显示有0~17.5%不等之变化量。

This paper was directed against the problem of gaseous suspension calciner heat consumption higher,and explained clearly to take optimazation designing a series of reconstruction measures,lowering the calciner heat consumption cost and remarkable economic and social benefits have been obtained.

本文针对气态悬浮焙烧炉投入生产运行后热耗高的问题，详细阐述了相应采取的优化设计和一系列改造措施，降低了气态悬浮焙烧炉的热耗成本，取得了明显的经济效益和社会效益。

The catalyst prepared by impregnating SBA-15 in solution of 0.1 mol/L ceric sulfate and being calcined at 300℃ for 3h showed best catalytic activity in synthesis of n-butyl acetate.

用0.1 mol/L的硫酸高铈浸渍SBA-15，焙烧温度为300℃，焙烧时间3h，通过乙酸正丁酯的合成反应考察催化剂Ce-SBA-15的制备，酯化率为95.7%。

However, the turnover frequency for dimethyl carbonate decreases with the increase in the Cu content of catalyst.

催化剂的反应活性与催化剂的焙烧温度密切相关，最佳的催化剂焙烧温度在200～300℃之间。

But, if the produced CO2 could not elute in time, carbonate would form during pyrolysis, and a calcined temperature higher than 800C was needed.

然而若焙烧过程中产生的CO2不能及时地排出，会导致体相中碳酸盐的形成，从而需要高于800C的再焙烧才能获得纯相的LSCO粉体。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。