Talk:Nickel pig iron
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[edit]It is not made clear in this short article just where the iron in nickel pig iron comes from. Is it a component of the nickel bearing ore, or is it from another source?
The present formulation of the article says that it comes from laterite. Laterites are tropical red soils with a high iron content formed by strong chemical weathering. If the original rock contained nickel (e.g. some basic or ultrabasic rocks) the laterite will carry nickel. Silicate bound Ni e.g. in olivine may be converted to oxides and hydroxides (as will sulphide bound) by this process making it easier to extract. The production of nickel from nickel laterites has increased in recent year more strongly than that from sulphide ores (some sulphide deposits getting depleted). Extracting pure Ni from laterites consumes much chemicals. When nickel pig iron is made the iron content will be utilised and less chemicals will be needed but it will probably produce much slag and require much slag formers and consume much refractories. The energy demand may be rather high, but so will the the case for production of pure nickel from laterite too.150.227.15.253 (talk) 09:53, 21 January 2021 (UTC)
Price of Ni pig iron
[edit]The price quoted is presumably not for Ni pig iron as such but for the nickel in it. This needs to be clarified, and the relation to the price of pure Ni is also of interest, as is the the resulting cost of the iron.150.227.15.253 (talk) 10:02, 21 January 2021 (UTC)