Dispersant is to disperse all kinds of powder in the solvent reasonably, and make all kinds of solid suspended in the solvent (or dispersion) stably through certain charge repulsion principle or macromolecule potential resistance effect Dispersant is a kind of interfacial active agent which has both hydrophilic and lipophilic properties. It can evenly disperse the solid and liquid particles of inorganic and organic pigments that are difficult to dissolve in liquid.
Dispersants are generally divided into inorganic dispersants and organic dispersants. Commonly used inorganic dispersants are silicates (such as water glass) and alkali metal phosphates (such as sodium tripolyphosphate, sodium hexametaphosphate, sodium pyrophosphate, etc.). Organic dispersants include triethylhexyl phosphoric acid, sodium dodecyl sulfate, methylpentanol, cellulose derivatives, polyacrylamide, GUR gum, fatty acid polyethylene glycol ester and polyether, as well as organic silicone and silicone oil.
In beneficiation process, dispersant is a kind of adjusting agent which is matched with collector, frother or selective flocculant. Through dispersant, collector or flocculant can interact with different minerals better to achieve the purpose of separation. It is generally used to disperse slime and effectively separate the mineral to be selected from gangue. For example, in the process of selecting kaolin, in order to remove the impurities such as quartz, iron, titanium and so on, the dispersant sodium hexametaphosphate is added to make the kaolin in a highly suspended and stable state, and then the selective flocculant is added to make one of the minerals (kaolin or impurity ore) form a floc settlement, and the other is still fully dispersed, so as to achieve separation and improve kaolin Grade and natural whiteness of concentrate. In the flotation process of sulfide ore, a proper amount of water glass and other dispersants are used to disperse gangue slime, so as to make sulfide ore and reagents work better, float out of pulp and improve the grade of concentrate.
Dispersants are generally divided into inorganic dispersants and organic dispersants. Commonly used inorganic dispersants are silicates (such as water glass) and alkali metal phosphates (such as sodium tripolyphosphate, sodium hexametaphosphate, sodium pyrophosphate, etc.). Organic dispersants include triethylhexyl phosphoric acid, sodium dodecyl sulfate, methylpentanol, cellulose derivatives, polyacrylamide, GUR gum, fatty acid polyethylene glycol ester and polyether, as well as organic silicone and silicone oil.
In beneficiation process, dispersant is a kind of adjusting agent which is matched with collector, frother or selective flocculant. Through dispersant, collector or flocculant can interact with different minerals better to achieve the purpose of separation. It is generally used to disperse slime and effectively separate the mineral to be selected from gangue. For example, in the process of selecting kaolin, in order to remove the impurities such as quartz, iron, titanium and so on, the dispersant sodium hexametaphosphate is added to make the kaolin in a highly suspended and stable state, and then the selective flocculant is added to make one of the minerals (kaolin or impurity ore) form a floc settlement, and the other is still fully dispersed, so as to achieve separation and improve kaolin Grade and natural whiteness of concentrate. In the flotation process of sulfide ore, a proper amount of water glass and other dispersants are used to disperse gangue slime, so as to make sulfide ore and reagents work better, float out of pulp and improve the grade of concentrate.
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