Research On The Effects Of Mineral Particals On The Stability Of Cellophane Cationic Collector Foam

Most of China's phosphate rock is low grade,embedded grain size is fine and contains more impurities,which belongs to the low-grade cellophane.To achieve the dissociation of the monomer,it must be ground to a certain fineness,so the study of particle size on the stability of the foam is very meaningful.The reverse flotation removes the silicon from the phosphate rock with a cationic collector,which have some drawbacks,including a large amount of foam,foam sticky and difficult to dissipate.If the actual production of minerals in the mixed with mud,there will be a lot of sticky foam stacked together phenomenon,which leads to the use of high pressure water can not be eliminated.In this paper,the effects of four minerals,such as cellophane,dolomite,calcite and quartz,on the stability of ether amine foams were studied.Thus discussing which particles have a greater impact on the stability of the mineral foam,and provide the theoretical basis for the addition of defoamer,which provides an effective theoretical basis for the regulation of foam in production.The article first studied the structure,surface tension and viscosity of 601,GEZ and GEY,which belong to the ether amine surfactants.The order of stability of their two-phase foams was found to be: 601> GEZ> GEY.With the increase of the concentration of surfactant,the surface tension gradually decreased,the viscosity gradually increased,the stability of the foam gradually increased.The stability of the two-phase foam is also related to the group structure of the surfactant,the longer the chain length of the hydrophobic group,the more stable the bubble,and the greater the volume of hydrophilic groups,the more unstable the bubbles.As GEY foam stability is the lowest,so the choice of ether polyamine GEY as the object of study.The stability of GEY two-phase foam decreases with the increase of temperature,and decreases with the increase of pH.The stability of the three-phase foam has a great relationship with the concentration of cationic collector GEY,the particle size of mineral particles,the concentration of mineral particles,the temperature of solution and the pH value of solution.With the increase of GEY concentration,the stability of three-phase foams of calcite,dolomite and colloidal phosphate increased gradually,and the stability of the three-phase foam of quartz increased first and then decreased.With the increase of the particle size,the stability of the three-phase foam increases gradually.With the increase of the solution temperature,the stability of the three-phase foam increases first and then decreases with the increase of the concentration of the particles.The elevated temperature is favorable for the adsorption of calcite,dolomite and colloidal phosphate on GEY,which is not conducive to the adsorption of quartz to GEY.With the increase of the pH value of the solution,the stability of the three-phase foam increased first and then decreased.At the same level,the order of the three-phase foam stability of the four mineral particles is: calcite> dolomite> cellophane > quartz.The effect of defoamer on foam stability was also studied.The results show that under the same conditions,the penetration coefficient and bridging coefficient of defoamer A are higher than those of defoamer B,and the defoaming ability of defoamer A is stronger than defoamer B.The finer the particle size of the mineral particles,the stronger the inhibitory effect on the antifoaming effect of the defoamer.