Chalcopyrite Leaching with Hydrogen Peroxide and Iodine Species in Acidic Chloride Media at Room Temperature: Technical and Economic Evaluation
Round 1
Reviewer 1 Report
In this paper, chalcopyrite leaching with hydrogen peroxide and iodine species in acidic chloride media were investigated. The manuscript presents original results, which are relatively well organized and systematized, but the interpretation of experimental results is sometimes poor. It needs a major revised.
Here is a list of my specific comments:
- The model, manufacturer and main parameters of the equipment to be used should be provided.
- The format of the table should be uniform according to the requirements of the journal.（such as Table 1 and Table 2）
- Please provide the XRD pattern of copper concentrate，and give the granularity distribution of copper concentrate.
- How is the content of soluble copper in copper concentrate calculated?
- Please provide a clearer picture, such as Figure 2- Figure 4.
- You'd better get the same number of significant digits，such as in Table1.
7.The composition of the leaching solution is too complex to explain the interaction between the leaching agents.
- The method of cost estimation is not scientific. Due to the large number of reagents introduced, the subsequent costs should be considered in this paper.
- The conclusion is too long, it is recommended to reduce it.
Author Response
Please see the attachment
Author Response File: 
Author Response.pdf
Reviewer 2 Report
This manuscript evaluated the leaching of chalcopyrite in the presence of several oxidizing agents such as H2O2 and NaIO3. Since process economics is important in developing a process, this manuscript reports some valuable information.
The following points need to be revised.
- Introduction should be revised because there are lots of comments which are not relevant to this manuscript.
- Leaching of chalcopyrite is a redox reaction. Therefore, the standard potential of the Eqs. (2), (3), (5), (6) and (7) should be reported.
- Leaching of chalcopyrite by the systems employed in this manusript has been investiagtedworldwide and there are lots of data. In this case, factrorial design is not necessary.
- It is necessary to analyze the leaaching data on the basis of the chemical and electrochemical reactions occurring.
- In order to investigate the effectiveness of the oxidizing agents, the concentration should be represented as molarity. Moreover, the concentration ratio to the soluble copper need to be reported. And this shoulde be used in discussing the data.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Accept.
Author Response
Dear editor and reviewers According to the comments, we have changed Tables 2 and 3, adding the reagent concentration in molarity. Thus, the reader has a better understanding of the reagent addition. On the other hand, the results shown in the following tables, are presented in g/L in concordance with the references cited in the introduction section. All references present the concentration of reagents and copper in g/L. This was maintained to better comprehension and comparison with previous works.Reviewer 2 Report
The unit of g/L is not accepted in most of the journals. Even if it is employed in other jounrals, it is difficlut to compare the concentration of oxidizing agents.
I strongly recommend to change the unit from g/L to molarity.
Author Response
Dear editor and reviewer
According to the comments, we have changed Tables 2 and 3, adding the reagent concentration in molarity. Thus, the reader has a better understanding of the reagent addition.
On the other hand, the results shown in the following tables, are presented in g/L in concordance with the references cited in the introduction section. All references present the concentration of reagents and copper in g/L. This was maintained to better comprehension and comparison with previous works.
