GU Jing 1,2，XIA Dehong 1，AO Wenqing 2，QI Zhaodong 2
(1. School of Energy and Environmental, University of Science and Technology Beijing, Beijing 100083, China; 2. Beijing Key
Laboratory of Advanced Ceramic and Refractories, China Iron ＆ Steel Research Institute Group,
Beijing 100081, China)
Abstract: Due to the active chemical property of the molten titanium slag, no matter what kind of refractory lining the electric furnace uses,it would suffer frequent damage when smelting titanium slag. In order to prolong the service life of the refractory lining of the titanium slag melting electric arc furnace and meet the demands of the production technology, this paper proposes using magnesia carbon bricks as the refractory working layer of the condensing lining structure. The initial critical chemical corrosion temperature of the refractories and titanium slag, furnace wall temperature gradient and heat flux were calculated and analyzed, and the method for obtaining the reasonable titanium slag shell thickness of the condensing lining was given. Because the industrial application of titanium slag melting electric arc furnace is still at a groping stage, the enhanced heat transfer of the furnace’s condensing lining structure is in its infancy, so on the basis of industrial trial production of titanium slag melting electric arc furnace with condensing lining, research directions of condensing lining in the future arepointed out.
Key words: titanium slag; melting electric arc furnace; submerged arc furnace; condensing lining; refractory