Alkali in red mud is harmful to water,land and air of the surrounding areas because of the rainfall when red mud is stored on land.Meanwhile,alkali restricts red mud′s comprehensive utilization in building materials such as cement.The distribution of alkali,including Na and K,in red mud was studied by electron probe microanalysis and in situ ICP-MS.The effects of leaching liquids with different p H on Na and K in red mud were also investigated.According to the leaching experiment,more than 17.6%,16.8%,and 1...