An Innovative Magnetic Density Separation Process for Sorting Granular Solid Wastes

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

Dear Authors,

this magnetic separation method seems interesting but to publish as journal paper, it needs revision.

experimental material need more detailed explanation. 

what is magnetized fluid? even if it is secret more information is necessary such as particle size and chemical composition.

result is only with photo and table. it is difficut to know how this result is good.

at least these information is necessary.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

This study investigates an innovative magnetic density separation (MDS) process for solid waste sorting. The proposed process utilizes an inclined planar magnet and a horizontal basin containing a static magnetic fluid as the separation medium. A pilot-scale facility is introduced to demonstrate the design for achieving continuous production and reducing the consumption of ferrofluid.

-The subject of the study, which investigates the magnetic density separation, was deemed important. The title was found to be compatible with the subject under investigation and generally encapsulates the main message of the study. However, the difference from similar studies should be clearly stated, and the novelty aspect should be emphasized more.

-The experimental setup is appropriate, and the methods are adequately explained.

-The findings in the manuscript were systematically collected. Additionally, the repeatability of the results must be demonstrated.

 

-Although important findings have been obtained, the interpretation of some results is not presented clearly. How do you separate streams effectively?

-The important data obtained in the results section were not adequately compared and discussed with information in the literature. Conclusion part should be improved.

-Graphs and tables are sufficient and necessary but the quality of graphs (pictures) can be improved. Recent and important references from previous studies should be cited. 

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 3 Report

Comments and Suggestions for Authors

The paper describes the method of a new device for gravity separation in magnetic fluid. The equipment has a new separation principle and great potential. It will be interesting to follow the further research. A very important positive factor of the paper is the creation of a semi-industrial machine. 

After reviewing there were questions and comments:

1. The title of the paper is not appropriate. It should be clarified

2. In lines 130-132 the authors write "Compared with some other gravity separation technologies, the innovative MDS process totally avoids the effects of particle size and shape on separation result because they do not affect particle trajectories at all" this statement needs more detailed explanation.

3 The loss of magnetic fluid during the separation process (e.g. with products) is not specified.

4. Semi-industrial test results are not given

Overall the paper is very interesting and can be published

 

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

Comments and Suggestions for Authors

all correction has done and it is fine to be published.