China Powder Network News Magnetization refers to the use of magnetic fields to act on non-ferromagnetic fluids to change the structure of materials. It is usually called magnetic treatment technology, which makes the materials in the magnetic field change their characteristics, thereby improving production indicators. It is also known as For magnetization technology or strong magnetic technology.
Magnetization treatment was initially used in medicine, and then magnetization technology has been widely used in medicine and petroleum industry, and has achieved good benefits. In recent years, magnetization treatment has been widely used in various fields such as mineral processing.
Advantages of magnetization treatment technology
my country is rich in total mineral resources and plays an important role in the global mining industry. However, my country's mineral resources have few rich ores and more poor ones, less single ores and more associated ores, less easy beneficiation and more difficult beneficiation. With the increasingly poor, fine and miscellaneous characteristics of my country's mineral resources, the traditional heavy, magnetic, flotation and combined beneficiation processes can no longer meet the needs of the beneficiation industry. Some scholars have studied the impact of magnetization on flotation.
Magnetization treatment is particularly important in improving the efficient utilization of mineral resources. It has a good use effect in the process of mineral material sorting and leaching, which can improve the sorting efficiency of flotation, reduce the dosage of drugs, and improve the economic benefits of the industry. And magnetization treatment can effectively enhance the floatability of minerals, increase the wettability difference between target minerals and non-target minerals, and help improve the recovery rate of minerals. Magnetization treatment has an auxiliary effect on the leaching of precious metals, which can shorten the leaching time, reduce the frequency of chemical use, and avoid the impact of secondary pollution on the environment.
Application of magnetization treatment technology in the field of non-metallic minerals
The application of magnetization treatment in flotation is different from the traditional magnetic flotation machine. In the flotation process, magnetization treatment is to improve the separation index by changing the magnetization field strength and magnetization time by different magnetization methods for water, chemicals and pulp.
Water magnetization treatment: A large number of scholars at home and abroad have studied the effect of magnetization treatment on the physical and chemical properties of the flotation water system. Viscosity, surface tension, dissolved oxygen, etc.
Slurry magnetization treatment: Flotation pulp is the main place and important medium in the flotation process, and physical and chemical methods are used to expand the property difference between the interfaces, which can achieve efficient flotation separation. Magnetization treatment can change the properties of pulp, such as pH value, conductivity, wettability difference, and apparent particle size of minerals.
Agent magnetization treatment: Flotation agents can selectively adjust the mineral surface properties during the mineral flotation process, creating more favorable conditions for flotation. Flotation reagents are usually divided into three categories: collectors, foaming agents and regulators. At present, the treatment of flotation reagents focuses on collectors and frothers. The magnetizing agent can make the agent have better adsorption to minerals, and can improve the yield and recovery rate of the target product.
Zhou Wenbo et al. found that magnetized water treatment can improve the recovery rate of fluorite. Liao Dehua et al. used strong magnetism to magnetize the water used for flotation, and found that magnetization treatment can enhance the effect of collectors and inhibitors on minerals, reduce the dosage of chemicals, and at the same time improve the grade and recovery rate of fluorite concentrate, obtaining a grade of 97.31. % of acid grade fluorspar concentrate. Zhu Jujian et al. used water for magnetization treatment flotation, and found that magnetization treatment increased the average kinetic energy of water molecules, weakened the force between water molecules, and reduced the steric hindrance effect of quartz on H+ adsorption, thereby reducing the floating rate of quartz and Ca2+. The activation ability of quartz is beneficial to the separation of hematite and quartz. Qiu Tingsheng and others found that magnetization treatment of water system (medicine, pulp) can improve the recovery rate of fluorite, reduce the silicon content of fluorite concentrate, reduce the consumption of chemicals, simplify the selection process, and obtain calcium fluoride content higher than 99% acid-grade fluorspar concentrate. Li Qingqing found that the magnetization treatment significantly improved the recovery rate of fluorite, and found that the magnetization treatment method was the best, followed by the magnetization treatment of water, and the magnetization treatment of ore pulp.
summary
With the gradual extension of the application scope of magnetization treatment, the use in mineral processing also shows good results, which is conducive to the comprehensive utilization and effective recovery of mineral resources in my country, and has a good prospect. In this regard, we should further strengthen the research on the mechanism of magnetization treatment affecting flotation, the factors and influence laws, equipment and technology of magnetization treatment affecting flotation.
References:
Li Fengjiu et al. Application status and action mechanism of different magnetization treatment methods in flotation
Zhang Jin. Application points of magnetization treatment technology in mineral processing
Li Fengjiu et al. The mechanism of magnetization treatment affecting flotation and its application in flotation.