Is it possible to produce sulfuric acid from sulfur concentrate by using a temperature of 550-600 degrees Celsius during the roasting of the mineral powder?
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Is it possible to produce sulfuric acid from sulfur concentrate by using a temperature of 550-600 degrees Celsius during the roasting of the mineral powder? Thank you
I want to know what process can be used to reduce the yield of sulfur dioxide, and how this can be achieved in terms of process design.:handshake
A low calcination temperature will certainly increase the residual sulfur content in the slag; even so, it is difficult to carry out the process effectively at temperatures below 600 degrees. Generally speaking, if the sulfur content in the feed material is below 22%, it can be calcined at around 700 degrees Celsius; this is an acceptable approach for calcining feed materials of very low quality. As for calcination at temperatures below 600 degrees, I don’t think such a practice exists.
The roasting temperature is only 550–600 degrees Celsius; I think such roasting is quite difficult, as this temperature is only slightly higher than the ignition temperature of sulfur concentrate. In fact, the ignition temperature of sulfur concentrate is much higher than the theoretical value. With such a low roasting temperature, the desulfurization effect is poor, and the stability of the process is also inadequate. I would also like to know why such a low temperature needs to be maintained – are there any other factors at play?
Thank you. I’ve learned that the sulfur content in the mineral powder is around 40%, and as for the particle size of the mineral powder…
The desulfurization roasting technology for sulfur concentrate (copper, zinc, etc.) differs slightly from the conventional pyrite-based acid production process. In the desulfurization of non-ferrous metal sulfide ores, it is important to control the roasting temperature in order to ensure the quality of the resulting oxide ore; sulfuric acid is merely a by-product. The preferred technologies in this area are Guangxi Liuzinc, Zhuye, and Yunnan Chemical Industry Institute.
The temperature requested by the poster is completely fine; as long as it is properly controlled, there’s no need to worry :) .
Worrying about it, thanks for your support! ! ! Which expert has information on this topic? I’d like to learn about it*: handshake
It would be great to have the contact information of experts in this field; thank you:victory:
I have a similar problem: I want to roast waste iron-based desulfurizers, which contain both iron sulfide and elemental sulfur, with the sulfur content estimated to be over 50%. I aim to carry out the roasting at a lower temperature (to reduce costs) in order to obtain slag of higher quality. What temperature range would be suitable? The smoke generated is intended to be purified using a purifying agent. I hope all the experts here can help! ! ! Thank you first!
Low-temperature roasting and conditions favorable for the leaching of slag are considered, hence a wet roasting process is to be adopted.
I’ll learn from everyone here* – for the sulfur concentrate to sulfuric acid production equipment I’ve designed, the temperature is usually set above 600 degrees
It’s possible, but generally the temperature for oxidative roasting is kept around 700 degrees. If the temperature is set at five or six hundred degrees, it requires too much precision in operation, and the furnace can be damaged easily. Information on this has been mentioned in the sulfuric acid industry, but my memory of it isn’t clear; you can search for it in the electronic versions related to the sulfuric acid industry!
I would like to ask, what kind of process is generally used?
It would be better to provide more specific examples in this regard
Try increasing the heat exchange area of the boiling furnace.