Selected Aspects of Modelling and Design Calculations of Roller Mills

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

Issues concerning the modification of mill designs, especially in terms of improving performance characteristics, are among the important ones due to the very low efficiency and high energy demand of the process, among other reasons. The possibility of effective modeling of the grinding process can bring a number of benefits. The authors proposed introducing an additional dynamic response factor in the model related to the rotation of the roller around a fixed point. The authors indicated that as the mass of the roll and its angular velocity increase, the value of the response increases approximately as a quadratic function. They indicated the possibility of implementing a mathematical model that verifies the design assumptions.

Minor suggestions I would like to make:

- In the affiliation of the second author the address of the university is given as Ka-liskiego, it should be Kaliskiego

- In my opinion, the abstract should not contain detailed data on, for example, the percentage of the total load of the times, these data should be in the summary.

- In the description of the third equation (3) we have

- q - contant loading of the roller's axis

Should be

- q - constant loading of the roller's axis

Author Response

Thank you very much for doing the review. The suggested corrections have been incorporated in full. The introduction has been corrected and changes have been made directly to the content of the article.

The corrected article has been put back into the system.

Reviewer 2 Report

Comments and Suggestions for Authors

Dear editor, considering the relevance of Sustainability, I consider that the manuscript is not acceptable to publish in this journal:
Sustainabilit: is an international, cross-disciplinary, scholarly, peer-reviewed and open access journal of environmental, cultural, economic, and social sustainability of human beings. It provides an advanced forum for studies related to sustainability and sustainable development.

Author Response

Thank you for sending the review.

The reviewer's remark concerned only the subject matter of the article in terms of the thematic area of the Sustainability journal, does not take into account the fact that the article was addressed to the special edition „Special Issue "Sustainability and Eco-innovations in Mechanical Processing Systems of Materials: Comminution, Agglomeration, Recycling" where the key words are, among the others: mills, grinding, energy assessment, mechanical processing systems.

Round 2

Reviewer 2 Report

Comments and Suggestions for Authors

Dear authors, thank you for the clarification made. Considering what I consider that the article is well structured, the results are supported with tables and graphs that allow their interpretation to be fluid.
My main concern is the lack of discussion. The discussion in a scientific article consists of contrasting the results obtained with other similar investigations. This I consider to be essential in a research article. For this reason, I suggest authors include strengthening their manuscript, particularly in this section.

Author Response

Thank you for making this review. The suggested changes have been made directly in the text of the article.