Lindberg / Blue M™LGO盒炉通过Thermo Fisher Scientific

盒子炉子(also called Ash furnaces) have many applications in modern research and chemistry laboratories. These furnaces are used to determine the amount of non-combustible and non-volatile (ash) material in a sample. To determine the ash quantity, a sample is placed in the furnace and exposed to high temperatures (typically up to 1,100°C) for a given period of time. The combustible and volatile material in the sample is burned off and removed from the furnace, typically as gas.

The furnace is placed in a fume hood during operation to allow safe venting of the gas. The remaining material in the furnace after the procedure is complete consists entirely of ash which is not burned off at high temperatures. This process is commonly used for coal and petroleum coke ashing procedures.

A马弗炉用于许多相同类型的协议作为灰化炉。这些烤箱中的机械对流的使用将气流从排气罩中引导出来，这通常消除了将炉子放置在通风罩下的需要。

Common applications for a muffle furnace include high-temperature applications such as fusing glass, creating enamel coatings, ceramics and soldering and brazing articles. Also, advances in materials used for heating elements, such as non-flammable molybdenum disilicide, can now produce working temperatures up to 1,800 degrees Celsius (3,272 degrees Fahrenheit), which facilitate more sophisticated metallurgical applications.

Tube furnaces are used to synthesize and purify compounds, primarily inorganic. These furnaces consist of a cylindrical cavity that is heated via one or more heating elements outside of the chamber. The cavity’s temperatures can reach up to 1,100°C. Additionally, tube furnaces typically have one (or more) heating cavities that can be controlled via thermocouple feedback, exposing materials to different temperatures for varying periods of time. Transport reactions, for example, requiring multiple temperature zones within the same compartment, can be performed in tube furnaces. The production of crystals also results from transport reactions.

使用管炉制备的材料的一个例子是超导体钇钡氧化钡（YBA2Cu3O7），CuO，BaO和Y2O3的混合物。使用氧气以几百度在管式炉中加热在管炉中以帮助达到所需的结果。根据其各个反应特性和控制标准，使用特定管炉“配方”产生其他超导体。

其他因素会影响您的选择炉，无论是冶金，半导体还是化学品过程。最重要的是，您希望选择为您的应用提供适当的温度范围的炉子。此外，许多实验需要引入用于运输过程的过程气体。如果您的申请需要惰性气体，您将想选择提供温暖梯度的炉子。最后，需要确定炉子的配置：Muffle，盒子或管炉，所有的形状和尺寸都提供。