Watch an Incredible Pit and Chimney Furnace Built From Scratch Posted: February 20, 2025 | Last updated: February 20, 2025 "Primitive Technology is all about building in the wild from scratch ...

Hitherto, PIT TYPE batch furnaces, ROTARY TYPE continuous furnaces were being used to produce MnO from ores containing MnO2, which faces cumbersome operations like quenching, scrapping etc.