| 摘要 |
<p>The present invention relates to an ammonia solvent for removal of Fe impurities in low grade pyrophyllite. According to the present invention, the ammonia solvent for removal of Fe impurities in low grade pyrophyllite is an ammonia solvent formed by diluting sulfuric acid, ammonium sulfate and hydrogen peroxide with distilled water. The present invention can provide an environment-friendly ammonia solvent capable of reducing costs and power consumption compared to a conventional technology and also effectively removing Fe impurities existing in low grade pyrophyllite.</p> |
