Kolmenvaiheisissa

Kolmenvaiheisissa refers to a concept and system developed in the context of coal mining, particularly in Finland. In essence, it is a three-stage process or system used to deal with extracted coal and its subsequent processing and use.

The process involves the extraction of coal from the mine shaft, followed by the processing of coal at different stages. The term 'kolmenvaiheinen' pertains specifically to the aspects of coal extraction and processing that occur in these distinct stages. The system implies a structured procedure to manage coal output, conversion, and use - thus standardizing and optimizing the entire coal production line.

Coal is extracted from mines using various machinery and techniques. Once extracted, it goes through primary processing stages, where it is cleaned and prepared for use. Primary processing includes stockpiling, crushing, and sorting to achieve an even size and quality distribution of coal. Secondary processing then follows, where coal can undergo further treatments to enhance its properties or to improve its burn characteristics.

According to Finnish researchers and mining experts, effective implementation of a three-stage system (kolmenvaiheinen) has the advantage of generally improving coal quality and efficiency throughout the coal production process. The installation of this system reportedly enhances operational convenience, while also ensuring continuous coal production at necessary quality standards.