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LF the premelting type furnace slag resources evaluation refining characteristics

作者：supman 来源：日期：2012-2-9 19:04:58 人气：标签：

LF the premelting type furnace slag refining al content is generally LF slag much higher, and among them only C3A and C12A7 two ore phase, the structure is simple, and two phase are mingled with certain f-CaO, make crystal structure as pure substance density, crystal structure of large space, extremely easy through chemical means destroy the original structure, extract valuable elements of aluminum. Contain things such as a mining bauxite used more process (bayer method) processing get alumina, but use NaOH, such as Na2CO3 leaching agent for industrial products, high cost. The alumina high fly ash, coal gangue and secondary resources of Al2O3 activity is too low, must first after high temperature firing to activate, ability through the chemical method extracting alumina, high operating costs. LF the basement Cl2A7 activity in blast furnace slag, including f-CaO content was relatively high, according to computation, LF furnace slag Cl2A7 phase in refining w (Al2O3) = 78.86, so, by mechanical grinding and easy to implement C3A and basic phase of Cl2A7 monomer disintegrate, and through the flotation separation, use. Or directly through the acid and alkali, destroy the original structure ontheleaching way to target Al components into liquid. Income Al3 + can imitate the alumina preparation of fine chemical products, raw material costs and operating costs are lower than the similar level and get the income is higher.

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