Kaolin is a widely used and very important non-metallic minerals with plasticity, cohesiveness, dispersion, fire resistance, insulation and chemical stability of a variety of process properties. It is widely applied in paper making, ceramics, plastics, rubber, chemical industry, electronics, coatings, paints, refractories, military industry, medicine industry, cosmetics, pesticides and other dozens of industries.
In the process to product Kaolin to use the equipment include: tamping pulp machine, spiral classifier, hydrocyclone, horizontal spiral centrifuge classifier, high gradient magnetic separation machine and high pressure filter press, dryer.
It is a hard work the kaolin have large size and hardness, hydraulic mining is not easy to mash, affecting the separation effect, so the use of continuous mortar pulping machine.
Kaolin ore in the quartz, feldspar particle size is thicker, generally greater than 325 mesh, and kaolin granularity is finer, mainly enriched in -2μm. Therefore, we use a large processing capacity of the grading equipment (spiral classifier) for rough selection, to shake off a large number of coarse tail, and using Hydrocyclone for final particle level control. The use of spiral classifier to remove sand, breaking through the original kaolin production process of the model of general kaolin enterprises are using low pressure filtration. With the progress of science and technology using high-pressure into the slurry, the pressure reached $number. 5MPa, increase productivity, ensure that the product water is below 32~35%, save energy consumption, also improve the working environment.
To improve the viscosity of kaolin first must be detailed analysis of the sample, in view of the characteristics of kaolin using the corresponding process method, can not be expected to adopt a single method to reduce viscosity, it is not possible to change all kaolin, so that its viscosity of more than 68%. There are many methods to improve the viscosity of kaolin, in which mechanical viscosity reduction is a simple, effective and low-cost method. It is proved that the effect mechanism of kaolin viscosity can be improved by kneading squeeze on kaolin.