The electric double layer formed on the surface of the mineral is composed of two opposite charges, which is very similar to a very thin plate capacitor. The interfacial electric double layer on the surface of the ore particles shown in the above figure is an integral part of an anion-based inner layer and a cation-based outer layer. The figure shows that the positive ions on the mineral surface are dissolved. On the one hand, due to the movement of molecules or the attraction of other ions in the solution, there is a tendency to expand into the interior of the solution, and on the other hand, it is difficult to travel far by the attraction of the ions in the surface layer of the ore, so that in 2-2, 3- A dense layer of dense ions is formed between the three lines (actually the interface). Since the attraction of the inner layer ions to the different ions is weaker as the distance is farther from the boundary, a relatively sparse and dense inner and outer ion layer is formed between the 3-3 and 4-4 lines, which is called diffusion. Floor. Outside the outer boundary line 4-4 of the diffusion layer, the composition of the ions is the same as the solution farther from the ore particles. In the moving pulp, when the ore particles and the surrounding solution move relative to each other, only the dense ions and a very thin layer of water can move along with the ore particles, and the diffusion layer is still together with the distant solution, so 3 The -3 line can be roughly considered to be the sliding surface of the surrounding solution during the movement of the ore. Our company is specialized in designing production processes for natural pigments, natural essential oils, natural oleoresins, natural nutritive and medical extracts. Furthermore, we are also capable of developing, manufacturing, installing and debugging relevant machines used for extraction of natural pigments. Natural Plant Pigment Project,Chili Capsanthin Project,Chili Capsaicin Project,Chrysanthemum Flavin Production Line Shandong ChemSta Machinery Manufacturing Co.,Ltd. , https://www.oil-proteinmachine.com
When the ore particles with the electric double layer are in a relatively static state with the surrounding solution, the total positive and negative electrical properties of the inner and outer layers are balanced, but the surface of the ore particles is compared with the ordinary solution outside the electric double layer. It has extra charge. If the potential of the ordinary solution is regarded as zero, there is a potential difference between the surface of the ore and the ordinary solution, which is called the total potential, and is represented by ψ. In Figure 4-4, the surface electrical properties of the mineral are more negative than the normal solution, and thus the zeta potential is negative. The opposite is positive. When the ore particles and the surrounding solution move relative to each other, only the dense layer of positive ions can move with the ore particles. At this time, the sliding surface of the ore in motion still has an unbalanced potential relative to the ordinary solution, which is represented by ζ. The negative zeta potential is shown in the above figure.