The Thermography Analysis of the Fine-Grained Materials Agglomeration Process in Closed Dies

A new method of diagnostics of technological parameters of the material agglomeration process and a design of a new matrix for compacting fine-grained materials were presented. Two different dies were used in the agglomeration process to carry out the tests. One of them is a new prototype design of an opening matrix, which allows for its quick opening and closing and easier extraction of the briquette and measurement. Comparative tests were carried out for four materials with different chemical compositions. The experimental part showed changes in the temperature of samples subjected to agglomeration. Analysis of the results for the Electric Arc Furnace Dust (EAFD) mixture showed that the average temperature in the middle of the material was higher by 1.3 °C than the highest temperature on the external surface. Comparing the test results for the hydrated lime obtained in the opening matrix with the results obtained for the classic closed matrix, it can be seen that the results are very similar, which indicates the advantage of the prototype solution of the opening matrix. The prototype solution of the opening matrix significantly speeds up the agglomeration process. The obtained results confirm the possibility of using thermography diagnostics in the agglomeration processes of fine-grained materials and the usefulness of the newly designed die. Thermography examination can be practically used to control the agglomeration process, product quality, and, indirectly, roller wear.