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- W2364326298 abstract "According to the current situation of paigeite utilization and basic characteristics of iron nugget production in rotary hearth furnace( RHF),a novel technology was proposed for comprehensive utilization of boron-bearing iron concentrate by reduction and melting-separation of carbon-containing pellet. In the lab test,with boron-bearing iron concentrate and carbonaceous reducing agent as raw material,effects of those factors including temperature,carbon content( C / O mole ratio),reducing agents and duration of melting process on processes of reduction and meltingseparation for the pellet,as well as properties of products from melting-separation were all thoroughly investigated. Test results show that both too high and too low temperature were not favorable to the melting-separation process,while increasing carbon content could help shortening reduction and melting-separation time. Ash fusion point can bring a big difference on the melting-separation effect. The FeO content in the slag decreased with the duration of melting-separation process being prolonged. Under the following optimal conditions,that is,by using anthracite as reducing agent with C / O of 1. 2,iron could be completely separated from slag after 15 mins of reduction at a reduction temperature of 1 400 ℃, yielding a nugget containing 0. 065% boron with iron recovery over 96. 5%,and the boron-rich slag grading 20. 01% boron oxide with boron recovery over 95. 7%. After slow-cooling process,boron-rich slag was mainly composed of suanite and olivine,with efficiency of boron extraction up to 86. 46%. Both boron-bearing nugget and boron-rich slag are good raw materials for metallurgy and boron industry. This new technology can provide reference for comprehensive utilization of low grade paigeite in China." @default.
- W2364326298 created "2016-06-24" @default.
- W2364326298 creator A5056859765 @default.
- W2364326298 date "2014-01-01" @default.
- W2364326298 modified "2023-09-27" @default.
- W2364326298 title "New Technology for Comprehensive Utilization of Boron-Bearing Iron Concentrate by Reduction and Melting-Separation of Carbon-Containing Pellet" @default.
- W2364326298 hasPublicationYear "2014" @default.
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