calcinations

简明释义

英[ˌkæl.sɪˈneɪ.ʃənz]美[ˌkæl.sɪˈneɪ.ʃənz]

n. 煅烧（calcination的复数）

英英释义

单词用法

同义词

反义词

例句

1.A new type of solid acid was prepared by calcinations of titanium sulphate doped lanthanum oxide.

搀杂氧化镧的硫酸钛经高温焙烧后制得一种新型固体酸。

2.The calcinations regulation of limestone and the concentration of calcium hydroxide solution have effects on the granularity of the calcium carbonate crystal.

石灰石原料的煅烧制度和氢氧化钙溶液的浓度将影响碳酸钙结晶的粒度。

3.The rotary hearth calciner in calcinations device of Jinzhou Petrochemical Incorporation was cracked and burnt out at the joint be - tween water jacket and inner tube during its operation.

中国石油锦州石化公司煅烧装置回转炉下料管，在运转过程中水套与内管连接处发生了开裂和烧损。

4.Various technological parameters, compositions of raw materials, energy consumption of calcinations and testing data of final product were also illustrated by engineering examples.

并通过工程实例说明该系统煅烧天然石膏、磷石膏、脱硫石膏、氟石膏的各项工艺参数、原料成分、煅烧能耗及最终成品的检测数据。

5.The results showed that both the crystallite size of CuO, and the coordination environment of copper varied with increasing calcinations temperature.

结果表明 ，催化剂中氧化铜的晶粒随着焙烧温度的提高而增大 ，铜的配位环境发生变化。

6.Using the Panzhihua ilmenite concentrate and the analytically pure zinc oxide as raw materials, photocatalytic powders were prepared by solid reaction calcinations process.

以攀枝花钛精矿为原料，加入一定配比的氧化锌，采用固相反应煅烧法制备具有光催化作用的多相复合粉体。

7.The property of the granular bentonite was measured, the influences of calcinations temperature and absorbed time on adsorption property were discussed.

测试了样品的性能，讨论了煅烧温度、吸附时间对吸附性能的影响。

8.During the calcinations 煅烧 process, the material undergoes significant physical and chemical changes.

在calcinations 煅烧过程中，材料经历了显著的物理和化学变化。

9.In metallurgy, calcinations 煅烧 is used to extract metals from their ores by heating them in the presence of air.

在冶金学中，calcinations 煅烧用于通过在空气中加热矿石来提取金属。

10.The efficiency of calcinations 煅烧 can greatly affect the yield of the final product in chemical manufacturing.

在化学制造中，calcinations 煅烧的效率可以极大地影响最终产品的产量。

11.The laboratory conducted calcinations 煅烧 experiments to study the thermal stability of various compounds.

实验室进行了calcinations 煅烧实验，以研究各种化合物的热稳定性。

12.The process of producing lime from limestone involves several stages, including the initial heating and the subsequent calcinations 煅烧 to remove carbon dioxide.

从石灰石生产石灰的过程包括几个阶段，包括初步加热和随后的calcinations 煅烧以去除二氧化碳。

作文

Calcination is a term used in chemistry and materials science that refers to the process of heating a substance to a high temperature in the absence of air or oxygen. This process is crucial in various industrial applications, particularly in the production of metals, ceramics, and cement. During calcinations（煅烧）, materials undergo thermal decomposition, which can lead to the removal of volatile components and the transformation of solid materials into oxides.One of the most common examples of calcinations（煅烧） is the production of lime from limestone. Limestone, primarily composed of calcium carbonate (CaCO3), is heated to temperatures around 900-1000 degrees Celsius. During this heating process, the calcium carbonate decomposes into calcium oxide (CaO) and carbon dioxide (CO2). This reaction is represented by the equation:CaCO3 (s) → CaO (s) + CO2 (g)The resulting calcium oxide, commonly known as quicklime, is an essential ingredient in various chemical processes and construction materials. The calcinations（煅烧） of limestone is a significant step in the production of cement, where lime plays a critical role in the formation of clinker.Another important application of calcinations（煅烧） can be seen in the production of ceramics. In this context, raw materials such as clay are subjected to high temperatures to achieve desired properties like strength, durability, and resistance to thermal shock. The calcinations（煅烧） process helps in removing moisture and organic materials, leading to a more stable and robust final product.The impact of calcinations（煅烧） extends beyond traditional industries. In modern technology, it plays a vital role in the synthesis of advanced materials, including catalysts and nanomaterials. For instance, metal oxides produced through calcinations（煅烧） are often used in catalytic converters to reduce harmful emissions in vehicles. The controlled heating allows for the creation of specific particle sizes and surface areas, which are critical for enhancing catalytic activity.Moreover, understanding the calcinations（煅烧） process is essential for environmental considerations. The release of CO2 during the calcination of limestone contributes to greenhouse gas emissions, making it a point of concern for industries focused on sustainability. As a result, researchers are exploring alternative methods and materials that can minimize the environmental impact of calcinations（煅烧） while maintaining efficiency and effectiveness in production.In conclusion, calcinations（煅烧） is a fundamental process in various fields, from traditional metallurgy and construction to cutting-edge materials science. Its significance lies not only in the transformations it facilitates but also in its implications for environmental sustainability and technological advancement. Understanding calcinations（煅烧） allows us to appreciate the intricate processes that underpin many of the materials we use daily and highlights the need for responsible practices in their production.