Behavior of Carbothermal Dephosphorization of Phosphorus-Containing Converter Slag and Its Resource Utilization
Round 1
Reviewer 1 Report
Comments and Suggestions for Authors
Behavior of carbothermal dephosphorization of phosphorus containing converter slag and its resource utilization
1. The production practice of steelmaking with carbothermic reduced slag shows that the process will 12
not affect the dephosphorization effect of the next heat, and the average consumption of steel and 13
slagging materials per heat was reduced by 4.74 kg and 608 kg, respectively, and the CO2 emission 14
what does it mean, incomprehensible terms
2. Keywords: phosphorus-containing converter slag; dephosphorization behavior; carbothermal re- 18
duction; ferrophosphorus; CO2 emission 19
too long keywords
3. to the high-phosphorus 33iron ore with large reserves [8].
the content shows that it is not about ores but about phosphorus-containing converter slag, please explain
4. espectively. The converter slag and coke were crushed to less than less than 0.063 mm to 50
5. Table 1. Chemical composition of converter slag (%). 55
(wt.%) the same in table 2
6. Table 3. Chemical composition and dephosphorization rate of carbothermal reduction slag (%). 75
Reduction condition :Final slag of R=2.81 Final slag of w(FeO)=24% 23.66 42.01
please explain
7. as it was higher than 1433 K, the carbothermal reaction could occur. 95
and also 930 K, 845 K, and 1330 K, respectively â–³G0<0
8. It can be seen from Figure 4 that the Fe content 112
in the Fe phase micro-area of the final slag was between 10% and 50%, and the P content 113
was between 0.4% and 0.8%, with little fluctuation; However, the content of P in the Fe 114
phase micro-area of carbothermal reduction slag was between 0.15% and 7.5%, which was 115
generally higher than that in the Fe phase micro-area of the final slag
it is impossible to understand which slag is before and which is after reduction, there are also the above-mentioned markings ( ) that were not explained (see Figure 3. SEM images of carbothermal reduction slag at different condition: (a) Final slag; (b) The 118
final slag was reduced; (c) Final slag of w(FeO)=24% was reduced; (d) Final slag of R=2.81 was re- 119
duced.
?????? which slag is waste and which is after carbothermal reduction
9. can be used as mature slag to realize low-temperature dephosphorization. 132
???
10. The average slagging material consumption for the conventional furnace 171
was 1826.25 kg, and that for the experimental furnace was 1218.25 kg, which was 608 kg 172
in relation to 100t of sail from the converte r ???r, it may be better to give in %, but there were errors (standard deviation, etc.) for measurements because sometimes everything is within the error limits and it is difficult to say whether carbothermal reduction is beneficial
11. we can consider 230
We
Comments on the Quality of English Language English very difficult to understand/incomprehensible, strange combinations of technical terms, imprecise explanations of abbreviations, grammar, spelling, punctuation
Author Response
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Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for Authors
The content of paper is significant and it would be interesting to readers. However, the following corrections should be made:
1. lines 8 – 11. English. This sentence contains Past, Present and Future Tense, which is not good. It is better to divide the sentence.
2. line 29. Most converter slag. English (does not sound correct).
3. line 63. It is better to present N2 flow rate in L/min (instead of m3/h).
4. line 103 (capture); Gibbs (instead of gibbs). Capital letter.
5. line 118 (capture). SEM images of carbothermally reduced slag at different conditions:
6. line 135.... the composition of molten steel is shown
7. line 150-151. …and all meet 150 the requirements… It is better to write “all the elements meet…
8. line 159. 4.1.4. Comparison of economic indicators (Capital letter).
9. line 230. We (Capital letter).
Comments on the Quality of English Language
Paper should be scrutinized. There are omissions in the paper.
Author Response
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Author Response File: Author Response.pdf
Reviewer 3 Report
Comments and Suggestions for Authors
In this study, the dephosphorization behavior of converter slag by carbothermal reduction. The work is interesting and relevant, but needs to be improved. The following are the main comments:
1. Manuscript must explain the significant advances provided in approaches and understanding compared to previous literature, and/or demonstrate convincingly potential in new applications. A highlight of your hypothesis, new concepts and innovations in the introduction.
2. The conclusion 3 is written in general. Unclear which way of dephosphorization of slag the authors recommend as the most preferable one.
3. On pages 2 and Authors wrote R. What means R? If need, please explain in the text of work.
4. Table 1. Page 2. The composition of the initial material must be established. The amount of compounds in the slag is less than 85%, what is the rest?
5. There are many technical typos in the text. The authors should edit the text more carefully.
For example,
Page 4. Therefore, it could be speculated that the main phosphorus gas product of carbothermal reduction converter slag was P2, This result was consistent with other scholars' research [16-18]. (There should be a comma at the end of the sentence.)
Page 7. 4.1.4. comparison of economic indicators. (The section title should be capitalized.)
Page 10. Secondly, the efficient recovery and utilization of reduced phosphorus resources should be considered. we can consider the following two aspects [31]. (The sentence should start with a capital letter.)
6. Page 10. “Because FeO in converter slag is reduced prior to P2O5, part of P2 gas will be dissolved into molten iron to generate ferrophosphorus, which will reduce the overflow of P2.” What do the authors mean?
7. The industrial test description should be placed in section 2.
Author Response
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