Application Analysis of Magnetic Flotation Technology in Iron Ore Dressing

Application of maglev technology in the election of iron ore beneficiation

China's iron ore resources are relatively small, and with the development of the mining industry, it is now gradually developing in the direction of poverty, fineness and miscellaneous, increasing the difficulty of mineral processing. In recent years, the price of iron ore in China has been rising steadily. In order to improve the efficiency of iron ore resource development, it is necessary to make a deeper study on the original technology based on the characteristics of iron ore resources to ensure that the selected iron ore can meet the smelting requirements. The application method of magnetic flotation technology in iron ore was analyzed.

The development of iron ore resources has continued to deepen, and as a non-renewable resource, the weight of iron ore that is easy to select high-grade iron ore is now decreasing, and the number of hard-to-select iron ore is increasing. Based on this background, it is necessary to focus on the analysis of the smelting technology of refractory iron ore. The application of magnetic flotation technology is mainly based on an optimized beneficiation technology based on magnetic separation and flotation, which effectively recovers valuable components in refractory iron ore. Compared with other mineral processing technologies, magnetic flotation technology has the advantages of simple operation, less process and low investment.

1 magnetic flotation technology features

Magnetic processing technology has the advantages of low cost, no pollution and simple construction. If it is to be effectively applied to iron ore beneficiation operations, it needs to be further analyzed on the basis of existing research, and strive to explain the magnetic processing effect more satisfactorily. Magnetic processing technology is applied to mining and metallurgy operations. It is necessary to focus on two aspects of magnetic treatment flotation and magnetic treatment chemical leaching. The magnetic treatment flotation is to carry out flotation after magnetization treatment of water system (water, chemical solution or slurry). The magnetic flotation follows the flotation principle, selects organic matter as a collector , selectively interacts with minerals, and makes the mineral surface hydrophobic, which is more likely to be attached by bubbles, thereby improving the ore floatability. The organic matter will be dispersed in the aqueous medium to form micelles, which promote the formation of "cage" in the theory of free radicals, and ensure that the magnetic treatment can be achieved in the flotation process. Chemical leaching magnetically, soon after the magnetization process water system, chemical leaching or magnetic field is applied in a chemical leaching process, the noble metal is used for multi-mineral leaching treatment.

2 magnetic flotation device features

Whether the choice of magnetic flotation device is reasonable will affect the beneficiation effect to a large extent. Some people have proposed and discussed the formation of magnetic buoyancy field in a device, complete magnetic flotation operation, pulse gradient magnetic field device, centrifugal magnetic flotation device, magnetic flotation machine and so on. However, in order to realize the application of equipment in industrial large-scale operations, technical optimization is needed. After successful, the difficulty of the iron ore beneficiation process can be greatly reduced, and the operation cost and energy consumption can be reduced. Compared with other beneficiation technologies, choose maglev technology has more obvious advantages of magnetic flotation equipment to explore research, iron ore beneficiation process can be simplified, and reduce the difficulty of flotation reagent formulations reduce drug consumption, increase the complexity fundamentally The flotation process and the separation process are selective and meet the requirements of iron ore dressing.

3 Magnetic flotation technology analysis of iron ore beneficiation application

1. Application test of magnetic flotation technology

The application effect of magnetic flotation technology in iron ore beneficiation can be seen that magnetic treatment has an impact on mineral flotation behavior, and has higher mineral recovery rate than other technologies, and can improve the flotation rate of minerals in actual operations. And for different mineral magnetic treatment effects, the corresponding optimal process parameters are also different. For example, using experimental weak magnetic separation device, conventional flotation, conventional magnetic separation and magnetic flotation comparison tests on magnetite- quartz mixed ore samples and typical magnetite ore, the results show that the magnetic flotation process is significantly better than conventional magnetic separation. And flotation process, and the main reason affecting the results of magnetic flotation is mineral magnetic separation and floatability, magnetic mineral flotation speed is the lowest. In addition, the selection of natural pure hematite, magnetite and imaginary hematite will be treated in different field strengths. The results show that the magnetic field treatment improves the floatability of iron oxide ore.

2 magnetic flotation technology influencing factors

(1) Surface hydrophobic substances

Test Method by XPS surface composition as well as mineral matter and flotation agent under the action mechanism of a non-magnetic treatment conditions and the other lead hexagonal sulfur nickel ore study determined xanthate magnetic treatment system under conditions, galena sulfur nickel ore combined with a hexagonal The result was changed compared to before the magnetic treatment. The change of binding energy proves that the chemical composition of mineral surface has changed after magnetic treatment. The magnetic treatment has an effect on the type and quantity of free radicals formed by the decomposition of xanthate, and it will affect the free radical state and mineral surface reaction. It will eventually change the formation of hydrophobic substances on the mineral surface.

(2) Ore floatability

Of pyrite and copper ore floatability studies may be determined by analyzing the results of measuring mineral surface in contact with the mineral surface xanthate adsorption amount, determined after magnetic treatment to increase the surface tension, increase wettability such that the minerals to further expand the yellow iron The difference in hydrophobicity between the ore and chalcopyrite determines that magnetic treatment will change the ore floatability.

(3) Magnetic treatment effects

Water magnetic treatment, that is, water or aqueous solution is treated by magnetic field before use, and some properties such as aqueous solution microstructure, surface tension, solution equilibrium, etc. are changed. The magnetic field activity mainly concentrates on the interaction between the magnetic field and the surface charge of the liquid, and the magnetic field can Reacts with a variety of particles, including polar molecules, ions, ion radicals, and the like. Water participates actively in the flotation process and wants to improve the flotation effect by changing the nature of the aqueous solution. It is a commonly used method to magnetize an aqueous solution and change its properties. For example, the special U-tube and the motor stator rotating magnetic field magnetized distilled water are selected to test the surface tension, and the surface tension after the magnetization of the distilled water is constant. The water osmotic pressure and viscosity coefficient after treatment are determined by comparing the physical properties of the water in various aspects. Surface tension, pH value, dielectric constant and electrical conductivity all change to varying degrees, and the change of aqueous solution is more obvious than that of pure water. For some gases, such as oxygen and carbon dioxide, the solubility in magnetic field treatment water will also change, and the aquatic organism will be improved. Active, and has a certain bactericidal effect.

4 Conclusion

The application of magnetic flotation technology in iron ore beneficiation can improve the development efficiency of mineral resources. Compared with magnetic separation and flotation technology, magnetic flotation technology has greater advantages in practical applications. Through the influence on the water system, the efficiency of the metallurgy can be improved without changing the internal structure and operating conditions of the original conventional flotation process. Meet actual production requirements.