Experimental Research Of Producing Slag Wool With Liquid Blast Furnace Slag

Blast furnace slag is one of the main products of the blast furnace, the currentmajority of blast furnace slag slag cement and other building materials used to make,although it can prepare good adhesion, high strength grout security aggregate, but itsadded value is lower. Shandong Linyi,s factory in order to enhance the value of blastfurnace slag, make full use of its latent heat, decides on a new blast furnace slagproduced a liquid slag wool production line to achieve the purpose of energy saving.Routing a Shandong ironworks slag wool production line is a high slag-high slagquenching heating-holding furnace slag wool material-centrifugal pull into slag wool.The use of liquid blast furnace slag, silica sand by adding acidity to change its directproduction of slag wool. In the production process of slag wool, lining graphiteelectrode oxidation and erosion are the two main factors currently seriously affectingthe normal operation of the holding furnace.In summary, this paper ultimately determinethe longevity of the holding furnace with electrodes and water-cooled wall lining withrationality, and for the future of industrial promotion done theoretical and experimentalbasis. Ultimately makes the process more optimized slag wool.For these practical problems encountered in the process, we propose appropriatesolutions as follows:(2)Due to slag wool production line materials used are liquid slag, electric arcfurnace steelmaking process does not happen collapse of the steel material in theelectrode finest short circuit, thus providing the conditions for using copper electrodes longevity. Since the longevity of the electrode structure using a water-cooled copper,reducing the storm drain graphite is oxidized in the air and therefore can extend the timeof the graphite electrode life. By comparing the experimental electrodes and longevityordinary graphite electrodes, pure graphite rods largest mass loss rate reached9.88%,while the circulating cooling water loss rate with the maximum of9.52×10-3%, moreproof of the feasibility of longevity electrode for further industrialization provided theconditions.(2) Adopting the holding furnace lining erosion plus circulating cooling watersolution overcome the problem of excessive consumption lining. By alumina brick,graphite bricks, silica brick, clay brick erosion tests was found high alumina brickerosion least suitable as a holding furnace slag wool lining. Since the costing of using aseparate high alumina bricks further improves the life of the stave take extra highalumina refractory brick lining. Experimental results show that taking extra stavealumina brick lining relative to the refractory brick lining the walls without coolingeffect has been significantly improved.Experimental results was finalized by the rationality of holding furnace electrodeswith longevity and its lining with a water-cooled wall, and for the next industrialpromotion do a solid theoretical and experimental basis, and ultimately makes theprocess more optimized slag wool.