There is a synergy between molten silicate electrolysis (magma electrolysis) and magnesium smelting. The magma units produce FeSi for reducting MgO obtained by boiling mare regolith at 1500 C. and higher and condensing it. CaO flux furnaces not only supply flux for iron and steel making but for Mg smelting also. Plain silicon from magma electro is saved for solar panels. The magma units and cast basalt from solar furnaces are used to make more magma units and various other furnaces for industrial expansion on the Moon.
Nickel and cobalt from iron fines allow us to make high temp. super alloy pipes for furnaces. Also, nickel is a catalyst for shifthing CO off gas to CH4 by the reaction: CO + 3H2 ===> CH4 + H2O CH4 + heat (900 C.) ===> C + 2H2 H2O + electrolysis ===> H2 + O This how we recycle carbon black.
Silicothermic magnesium reduction is done at 1200 to 1500 C.
Cast basalt from solar furnaces and ceramic blocks from magma units are used to make furnaces of all sorts.
Fused titanium dioxide, TiO2, can make seconday mirrors for solar furnaces with reflector set ups sort of like a reflector telescope. At first we will land big aluminized mylar umbrella like reflectors and secondaries. My first suggestiong for secondary mirrors was chromium, m.p. 1900 C. since secondaries will have to bear high thermal stress loads because they don't reflect 100%. But chromium will be hard to get in the early days of industrialiization, and TiO2 reflects 90 to 95% of the light that falls on it and it's m.p. is 1900-2000 C. So a sintered blank of TiO2 could have it's surface melted, allowed to harden, then polished to make an excellent reflector with in situ materials.
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