Recycling of Chrome-Containing Waste from a Mining and Processing Plant to Produce Industrial Products
and Aisha TastanovaRound 1
Reviewer 1 Report
Long-term development of ore deposits, beneficiation and smelting concentrates has led to waste accumulation, the formation of large-scale dumps and sludge ponds, especially the tailings of mineral processing plants containing chromium ions, which adversely affect the environment and human health. In this paper, a new production technology for the treatment of chromium-bearing tailings was developed for the integrated treatment of spent chromium ore by chemical enrichment and gravity beneficiation, resulting in the acquisition of chromium concentrate for the production of ferrochrome, magnosine for composite nitrogen-magnesium fertilizer, and forsterite for additives for the production of refractories. Some suggestions have been made below before its final publication：
1.Whether the cost of the method in industrial applications can be estimated.
2.The language is not clear enough, and the chemical formula is wrong.
3. The clarity of the graph is low and indistinguishable.
4. Too few analytical methods were mentioned in the study and could be considered from other perspectives.
The quality of English needs to be improved.
Author Response
Responste to Reviever 1 Comments
Author Response File: 
Author Response.pdf
Reviewer 2 Report
The material presented in the manuscript is devoted to an actual problem - the processing of chromium-containing waste and reducing the negative impact on the environment. This problem is especially relevant for Kazakhstan, as well as for other countries where chromite ores are mined and processed (South Africa, India, Russia, etc.)
There are several comments on the article, mainly related to the design of the text of the manuscript:
1.It is necessary to separate "Introduction" and "Literature review" for a more objective comparison of existing and proposed methods. In addition, it is desirable to add more scientific sources on this issue.
2.There is no "Discussion" section in the materials of the manuscript, where it is necessary to indicate the conditions and restrictions on the application on the use of the proposed technology of the method.
Author Response
Responste to reviever 2 Comments!
Authors are very much thankful to the reviewer for spending their valuable time for review of our manuscript. We have tried our best to answer and justify all the comments raised by the reviewer and have revised thoroughly as suqqested.
Author Response File: Author Response.pdf
Reviewer 3 Report
The authors researched the chemical beneficiation and gravitational beneficiation of chrome-containing slurry tailings of Donskoy Ore-Mining and Beneficiation Plant (DOMBP). Three qualified products were obtained by this technology, including chromium concentrate, ammoshenite and forsterite. The proposed technology has the potential to treat sludge tailings stored in huge areas of tailings storage facilities. Overall, I think that this work is fine, and it can be accepted for publication after some revision. Please check the attachment.
Comments for author File: Comments.pdf
Moderate editing of English language.
Author Response
Response to Reviewer 3 Comments!
Authors are very much thankful to the reviewer for spending their valuable time for review of our manuscript. We have tried our best to answer and justify all the comments raised by the reviewer and have revised thoroughly as suggested.
Author Response File: Author Response.pdf
