查询词典 calcining

Increasing the calcining temperature at 1500℃ 5h, the morphologies of the product became the big and wide vermiform-fiber form particles, the length was about 2.5 μm, and the width was about 700 nm. In addition, the vermiform-fiber form particle could be found in the filtrated precipitate with the additional ammonium sulfate. If the ratio of ammonium sulfate to alum is above 1, the vermiform-fiber form particle was formed. After calcined at 1500℃ 5h, the particle grow up to 2μm. Adding ammonium sulfate was also reduced the particles size of alumina because the surface area of the products was increased by increasing the quantity of ammonium sulfate.

在明矾与氨水沉淀物经过滤后再额外添加不同硫酸铵的比例，1200℃ 1hr煅烧后，发现添加硫酸铵比例在1以上，其型态亦为蠕虫状纤维，当以1500℃ 5hr煅烧，蠕虫状纤维型态粒子亦变为又大又胖，其粒子尺寸长度约为 2 μm 宽度约为 500 nm；且将煅烧1200℃ 1hr测其比表面积值，会随著硫酸铵的添加量增加，粉体的表面积会增加且粉体变细，添加硫酸铵比例为 4 者所得粉体粒径最小，从比表面积所得结果估计约 150 nm 。

CALCINING AND LEACHING OF BARITE WITH DEPOSIT FORM AND HEAT LIQUID FORM.

沉积型和热液型重晶石的煅烧和浸取。

The results showed that the calcined bone ash obtained at 1200℃ had clear outline, spherical and mode-ratesize particles. These characteristics were benificial to improve the slurry fludity, broaden the sintering temperature range and increased the whiteness of bone china bulk. It is concluded that the moderate calcining temperature range of bone china bulk is 1200-1300℃.

实验结果表明，在1200℃下对骨灰进行煅烧，可获得轮廓清晰、周球形和颗粒尺寸适中的煅烧骨灰，有利于提高骨质瓷坯体浆料的流动性，扩大坯体烧结温度范围，并且能提高坯体的白度。

The effect of calcining time and second calcination at 600 ℃ on the products was studied.

研究了600℃点燃温度下，不同保温时间以及2次焙烧的工艺条件对产物的影响。

Furthermore, the electrocatalysis activities of powder properly prepared by microwave calcining are much higher than that by high temperature calcine.

并且，通过合适的微波焙烧工艺合成的粉体的电催化活性要比高温焙烧所得粉体的催化活性高。

Based on the balance of calcium oxide material, a mathematical model concerning the relationship between recirculation ratio of material and calcining rate of carbonate was developed.

在建立物料氧化钙平衡的基础上，建立了关于物料循环率和碳酸盐分解率之间相互关系的数学模型。

The products after calcining need not comminute again.

干燥煅烧后成为产品，不用粉碎。

I plant to develop energy-saving combustion production equipment, widely used in building materials, metallurgical, chemical and other large, medium-sized enterprises, and industries to use the drying, calcining, tempering an ideal complementary sources of heat such as equipment, the sets of equipment to save energy to reduce production Cost.

我厂以开发研制生产节能燃烧设备，广泛应用于建材、冶金、化工等大、中型企业，各行业使用的烘干、煅烧、回火等理想配套热源设备，该套设备节省能源降低生产成本。

Fluosilicic acid,which is the byproduct from phosphate fertilizer factory,reacts with ammonium hydrocarbonate to obtain ammonium fluosilicate,then reacts with ammonium carbonate to form settled SiO 2,after filtration,water washing,drying and calcining,high purity SiO 2 with less than 10×10 -6 metal impurity and less than 10×10 -9 uranium and thorium respectively is made.

由磷肥厂副产氟硅酸同碳铵反应得氟硅酸铵，再和碳铵反应生成SiO2 沉淀，经过滤、水洗、干燥、煅烧得高纯SiO2 ，其金属杂质总含量小于 10× 10 -6，含放射性元素铀和钍各小于 10× 10 -9，通过实验获得了适宜的工艺条件，反应温度 70℃～ 80℃，反应时间 1 5h～ 2 0h ，配料比n(NH4HCO3 )∶n(NH4 2 SiF6 =4 4。

And using basic magnesium carbonate by synthesizing as raw materials, the condition of calcining magnesium oxide was studied in this paper.

文中探讨了制备碱式碳酸镁的工艺条件并进行了优化，研究了利用自制碱式碳酸镁产品烧制氧化镁的过程。

They experience feelings deeply and intensely, and their emotions are often mercurial.

他们的感情深刻而强烈，情绪善变。

Surrounded with or as if with a rampart.

用城墙围绕的用城墙围绕的或类似于为城墙围绕的