The iron-oxidizing bacteria offer an indirect mechanism function. Increasing the mineralconcentration can depress the dissolution of pyrrhotite;
增大矿浆浓度抑制磁黄铁矿的溶解，矿浆浓度过大会影响溶氧量、增大矿粒间的剪切力从而影响细菌的生长；
2
The toxicity of residual xanthate in mineralconcentration water is very serious. Accumulating in the gangue dam or discharging into natural water body can bring danger to the ecological environment.
选矿废水中残留的黄药毒性较强，蓄积在尾矿坝中或排入天然水体中都会对周边生态环境产生一定的危害性。
3
Studies have shown that using fluoride toothpaste helps increase the concentration of fluoride in the teeth, even in areas with water supplies containing high levels of the mineral.