Originally Posted by Sunstealer
1mm = 0.04 inches
iron oxide becomes metallic iron at roughly 1250°C
, almost 300 degrees below
iron's melting point of 1538°C
O)) or siderite
Melting point of magnetite/Iron oxide (Fe3O4) 1538oC - 2800oF
Melting point of iron oxide/rust (Fe2O3) 1566oC - 2850oF
Iron must melt and then be atomized to produce iron spheres.
The bloomery process does NOT melt the iron in the ore and therefore it cannot produce iron spheres.
Wrong, as noted above.
is one of the residues generated in combustion
, and comprises the fine particles that rise with the flue gases.
Fine particles: Particulates
– also known as particulate matter
), suspended particulate matter
), fine particles
, and soot
– are tiny subdivisions of solid matter suspended
in a gas or liquid.
Any microspheres created as part of fly ash from burning office contents would fly away in the smoke along with all the other particulate matter.