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The Seimens furnace is also known as an open hearth furnace in Australia. Not quite sure where the material on the Catalan forge belongs, but probably under open hearth furnace as well, it seems to be a predecessor of the Seimens process. Andrewa 18:45, 7 October 2005 (UTC)[reply]

Wouldn't it be a good idea to put some descriptive information about these furnaces? How big were they? The article explains the capacity, but not the actual physical size of them. The article is a good start but it is really lacking in the area of explaining what they look like and their size. Cambios 15:37, 12 January 2006 (UTC)[reply]

I merged in the content from Siemens regenerative furnace. I made a few minor changes, and linked regenerative preheating to air preheater. Comments and changes are welcome. Tom harrison 13:58, 28 October 2005 (UTC)[reply]

The Siemens regenerative furnace was the greatest invention of the man who first fashioned it. It greatly enhanced the productivity of glassmakers as well as steelmakers. It probably should not be in the same article with older furnaces. Ancient Chinese, Egyptians, and others operated furnaces which created temperatures high enough to allow the production of iron and steel. Putting the Siemens regenerative furnace into the same article with older furnaces is comparable to including the Indianapolis 500 in the same article with chariot racing. Superslum 06:45, 13 December 2005 (UTC)[reply]

There is an example of the regenerative furnace revealed by an archaeological dig at the Glass Museum in St. Helen's.

Around Sheffield we always refer to Siemens Open Hearth Furnaces (used for making steel). The last ones were removed about 35 years ago. I don't think the air preheater article correctly describes the design and operation of the regenerators (honeycombs made of brick) used in the UK (I assume all others were similar). Probably better to describe it here. AHEMSLTD 13:27, 20 December 2005 (UTC)[reply]

I have removed the references to 'Catalan forges', as these have nothing to do with the subject. This principally involves the deletion of the following:

The development of the Catalan forge during the Middle Ages was a major advance in the science of metallurgy.

I have also added some more detaila and references. Peterkingiron 22:52, 27 April 2006 (UTC)[reply]

What the heck is an oxygen ray - a jet of oxygen, maybe? Route: the diagram is probably from Dutch, Dutch has many German elements, ray / beam / jet in German is "Strahl", so our amateur linguist thinks "ray" is the right word from the (probably) three possibilities in his or her dictionary. Tilt!Maelli (talk) 16:02, 23 June 2010 (UTC)[reply]

Yeah, it should say Tuyere. Wizard191 (talk) 16:15, 23 June 2010 (UTC)[reply]

Don't you find tuyeres only on BFs? But miles better than "oyxgen ray"! I would like to suggest that this diagram is pretty poor, or at least the labelling, and needs redoing or replacement - preferably by a professional.Maelli (talk) 16:20, 23 June 2010 (UTC)[reply]

Oh, and it's a furnace, not an oven - as far as I'm aware, the only ovens in a steel plant are the coke ovens (I used to work for a firm of coke oven engineers). There are stoves, though - the hot-blast stoves, or Cowpers.Maelli (talk) 16:25, 23 June 2010 (UTC)[reply]

Yeah, the image is quite poor, however I don't think it will last long because it's up for deletion right now for a copyright violation. Wizard191 (talk) 16:34, 23 June 2010 (UTC)[reply]

What does that mean? What is the "hearth", why is it better open? I there a closed hearth furnace? I have trouble following the process, but mostly how it relates to the name..45Colt 22:34, 5 March 2015 (UTC)[reply]