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nature : making powder ore block one of the important ways. For example, the former BF often depleted iron ore beneficiation by the iron ore concentrate, by the rich iron ore crushing, screening after the ore powder and flux, fuel production and recycling of ferrous powder with an appropriate proportion of such tie and water made of granulated iron mixture, a flat bed in the sintering machine, on the ignition burning ventilation form a block, made of sinter. Through sintering materials can improve the metallurgical properties. Sinter has become a major blast furnace materials, nonferrous metals and rare metals metallurgy, the commonly used method to decomposition sintering ore. Metal ores and lime, soda or other salts (such as fluoride, potassium silicate, sodium, etc.) mixed heating, sintering, so that it was partially molten state, accelerating decomposition reaction, which will help leaching. Again ore and aluminum soda ash, lime and other sintering can be alkaline solution of sodium aluminum leaching; Zircon and potassium fluoride sintered silicon can be used diluted hydrochloric acid leaching Zirconium potassium fluoride.
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