Although the minimum ignition temperature is an important safety characteristic and of practical relevance in industrial processes, actually only standard operation procedures are available for pure substances and single-phase values. Nevertheless, combinations of substances or mixtures are used in industrial processes and up to now it is not possible to provide a standardised minimum ignition temperature and in consequence to design a process safely with regard to the substances used.

In order to get minimum ignition temperatures for frequently used hybrid mixtures, first, the minimum ignition temperatures and ignition frequencies were determined in the modified Godbert-Greenwald furnace for two single phase solids and a liquid substance. Second, minimum ignition temperatures and ignition frequencies were determined for several combinations as hybrid mixture of dust and liquid.

In parallel to the determination of ignition temperatures a new camera and computer system to differentiate ignition from non-ignition is developed. First results are promising that such a system could be much less operator depended.

By a high number of repetitions to classify regions of ignition the base is laid to decide about a new procedure for a hybrid standard and updating existing ones, too. This is one of the necessary aims to be reached in the Nex-Hys project.

A noticeable decrease of minimum ignition temperatures below the MIT of the pure solids was observed for the one hybrid mixture tested, yet. Furthermore more widely dispersed area of ignition is shown. In accordance to previously findings, the results demonstrate a strong relationship between likelihood of explosion and amount of added solvent. In consequence the hybrid mixture is characterized by a lower minimum ignition temperature than the single dust.

尽管最低着火温度是重要的安全特性，并且在工业过程中具有实际意义，但实际上仅标准操作程序适用于纯物质和单相值。然而，在工业过程中使用了物质或混合物的组合，并且到目前为止，尚不可能提供标准化的最低着火温度，因此就所使用的物质而言，安全地设计了一种过程。

为了获得常用混合混合物的最低点火温度，首先，在改进的Godbert-Greenwald炉中针对两种单相固体和液体物质确定了最低点火温度和点火频率。其次，确定几种组合的最低点火温度和点火频率，这些组合是粉尘和液体的混合混合物。

在确定点火温度的同时，还开发了一种新的照相机和计算机系统，以区分点火与非点火。最初的结果令人鼓舞，这样的系统可以减少对操作员的依赖。

通过大量的重复来对点火区域进行分类，奠定了基础来决定混合标准的新程序并更新现有标准。这是Nex-Hys项目要达到的必要目标之一。

然而，对于一种测试的混合混合物，观察到最低点火温度明显低于纯固体的MIT降低。此外，示出了更广泛分散的点火区域。根据以前的发现，结果表明爆炸的可能性与添加的溶剂量之间存在很强的关系。结果，混合混合物的特征在于最低点火温度比单一粉尘低。