Waste from the steel mill

[Cullen's Hound]

After reading the recent report I just feel a need to point out that the waste from burning coal is mostly carbon dioxide which the pollution mechanics already account for, so instead of dealing with 533 tons of waste per day from the steel mill you need to account for around 158 tons

[Cullen's Hound]

Made curious I google for articles about how much waste is involved finding mostly articles extolling recycling I also I find this article https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6616418/ that states that 400kg of solid waste is created for every ton of steel produced, Which I believe places the daily slag amount for the mills at roughly 17 tons

[nosquimoriturisumus]

Carbon dioxide shouldn't even count as pollution from the game's perspective. Pollution makes your citizens sick today; CO2 has no acute effects but causes global warming several decades down the road.

[Cullen's Hound]

Originally posted by nosquimoriturisumus:

Carbon dioxide shouldn't even count as pollution from the game's perspective. Pollution makes your citizens sick today; CO2 has no acute effects but causes global warming several decades down the road.

sure, but it's mixed in with the particulate from the ore, coal fired steel towns are smoggy

[Pr0wn]

The main issue with the steel mill is the ratio of input products to output products, the refined iron ore that is labelled "iron" should be almost pure iron oxide between 50-70% iron per weight. The ratio in the game (200ton of iron for 43 tons of steel) suggest an iron content of the processed ore <25%.

Most of the solid waste should come from the iron ore processing plant, in the form of iron ore tailings.

[Silent_Shadow]

Originally posted by Pr0wn:

The main issue with the steel mill is the ratio of input products to output products, the refined iron ore that is labelled "iron" should be almost pure iron oxide between 50-70% iron per weight. The ratio in the game (200ton of iron for 43 tons of steel) suggest an iron content of the processed ore <25%.

Most of the solid waste should come from the iron ore processing plant, in the form of iron ore tailings.

It could be that limestone is included in the tonnage for "iron," which would bring the concentration of iron fed to the furnace back up to something more reasonable. The amount of tailings would probably depend on the quality of the iron ore source; some ores are good enough to feed directly into blast furnaces without any more processing except for dressing the ore.

The ratio of steel per iron could also be skewed due to manufacturing losses, as we are getting finished structural steel, not pig iron. Mill scale, pickling, scrap from forming processes, losses from refinement of pig iron into steel (especially if puddling is used), and other loses could reduce the output further.

Most of the pollution from the steel industry though comes from the coking ovens.