许多曾经被认为处理起来不经济的小矿床目前都用堆浸法处理。若能找到一种比石灰更便宜的pH值调节剂,就能增强另一些矿床的开采价值。残留于红泥中的氢氧化钠是堆浸中潜在的氢氧化物源。吸附在红泥中的氢氧化钠在低碱度水环境中缓慢析出,因而在整个堆浸期间缓慢析出的氢氧化钠就成 Many of the small deposits that were once considered uneconomical to deal with are currently treated by heap leaching. If one can find a cheaper pH modifier than lime, it can enhance the value of other deposits. Sodium hydroxide remaining in the red mud is a potential source of hydroxide in the heap leach. The sodium hydroxide adsorbed in the red mud is slowly precipitated in the low-alkalinity water environment, so that sodium hydroxide slowly precipitated during the entire heap leaching becomes