Ad
related to: hot blast furnace tractor supply
Search results
Results from the WOW.Com Content Network
Hot blast allowed the use of anthracite in iron smelting. It also allowed use of lower quality coal because less fuel meant proportionately less sulfur and ash. [11]At the time the process was invented, good coking coal was only available in sufficient quantities in Great Britain and western Germany, [12] so iron furnaces in the US were using charcoal.
The tuyeres are used to implement a hot blast, which is used to increase the efficiency of the blast furnace. The hot blast is directed into the furnace through water-cooled copper nozzles called tuyeres near the base. The hot blast temperature can be from 900 to 1,300 °C (1,650 to 2,370 °F) depending on the stove design and condition.
The movement away from charcoal in US iron smelting began in 1827, when a puddling furnace in Phoenixville, Pennsylvania started using anthracite coal. Blast furnaces continued to use only charcoal until about 1840, when coke from coal started replacing charcoal as the fuel and reducing agent. [5]
On February 5, 1837, Thomas used a hot blast to smelt iron ore and anthracite coal. [2] The result was an easy method to produce anthracite iron, which revolutionized industry in the Swansea Valley. This type of iron had been patented by Edward Martin of Morriston, Wales in 1804.
James Beaumont Neilson (22 June 1792 – 18 January 1865) was a Scottish inventor whose hot-blast process greatly increased the efficiency of smelting iron. Life [ edit ]
The blast furnace was the first example of continuous production and is a countercurrent exchange process, various types of which are also used today in chemical and petroleum refining. Hot blast, which recycled what would have otherwise been waste heat, was one of engineering's key technologies. It had the immediate effect of dramatically ...
The Scrantons focused instead on manufacturing pig iron, using a blast furnace. [4] They wanted to take advantage of a recent technological innovation in iron smelting, the "hot blast". [4] Developed in Scotland in 1828, the hot blast preheats air before it is pumped through molten iron, substantially lowering fuel needs. [4]
As of 2009 the world's largest blast furnace in Caofeidan, China operated by Shougang Jing Tang United Iron and Steel Ltd had 42 tuyeres, [7] through which the hot blast is injected in the furnace. They are usually made from copper and cooled with a water jacket to withstand the extreme temperatures. [citation needed]
Ad
related to: hot blast furnace tractor supply