NO NO NO! Normal coal burns much hotter than smokeless nuggets and can damage your stove, i.e MELT it!
I will post a pic on here tomorrow but I spent Friday evening at a neighbour’s house helping her deal with the consequences of a chimney fire while burning coal. The cast iron baffle plate in her Dovre 250 has melted, burned through and collapsed into the grate and I had a real struggle removing it. The whole stove was clogged with brown ash dust, which I realised was burned soot. She had started by complaining that she couldn’t control the stove and I explained that in a flue fire the updraft is massive and it was this, which caused the coal to burn so hot and melt the baffle. Her flue is lined and I couldn’t find any traces of melted metal but nonetheless I told her to get it swept and inspected urgently. The new baffle and two liner bricks are going to cost her £200, an expensive mistake.