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The utility model relates to the technical field of fine-grained sand beneficiation, especially a fine-grained sand beneficiation. Due to the large-scale development and utilization of mineral resources, the available resources continue to decrease, resulting in a gradual decline in the grade of raw ore mining, and subsequent processing such as smelting has increasingly improved the quality requirements of mineral processing products. Therefore, it is necessary to use fine-grained sand beneficiation to screen the mined ore. However, the existing fine-grained sand beneficiation has the problems of low beneficiation efficiency and low beneficiation accuracy.

Fine particle re-separation technology is referred to as re-separation technology. It is a mineral processing method to separate minerals according to different mineral density and different sedimentation velocity in the medium. Next, we will systematically analyze and introduce the basic principles of the real operation process of microfine grained separation technology.

Suspension vibration particle separation technology in the actual production and life can be divided into fine grained separation technology and suspension vibration particle flotation separation technology two, these two kinds of separation technology in the actual operation process applied to the technology is not the same. Although these two technologies are suitable for mineral processing plants that mainly recover tin, when there is a difference in the content of raw ore, it is necessary to consider whether the selection of suspended vibration particle separation technology or suspended vibration particle flotation separation technology.

An extremely challenging area of microfine grained separation technology is still the design of equipment, especially for the classification of low-grade, refractory ores. New re-election equipment has emerged one after another, becoming the leader in the field of fine re-election, but when the ore particle size is less than 10m, the classification efficiency is still very low.

Fine grained separation technology equipment is suitable for various metal mines, mainly used for mixing before flotation, rich in reagents and pulp, and can also be used for mixing other non-metallic minerals. It is used for fixed ingredients with a concentration of no more than 30% (calculated by composition) and a particle size of less than 1mm. It is a mechanical hybrid type of flat barrel radiant circulating spiral impeller. Fine particle re-separation technology equipment before use to tighten the pump bolts.

The cost of ore mining has risen sharply, and the company is at a disadvantage in terms of its production and operation status and its competitiveness with foreign iron ore producers. At present, in this range of particle levels, mineral selection has exceeded the limits of the existing fine grained separation technology equipment process, fine iron mineral particles can not be recovered, a large number of useful mineral loss.

Mineral resources are important non-renewable natural resources and basic material materials for national economic construction. Its guarantee degree is related to the long-term stable development of the national economy and national security. China is one of the few countries with complete types of mineral resources and rich reserves in the world. So, let's learn about the progress and trend of clean utilization technology of fine minerals!

The technology of clean utilization of fine-grained minerals actively carries out the efficient and clean utilization of mineral resources, which is of great significance for implementing the basic national policy of resource conservation and environmental protection, alleviating the increasingly strengthening resource and environmental constraints in the process of industrialization and urbanization, and improving the efficiency of resource utilization. it is of great significance to speed up the transformation of the mode of economic development and enhance the ability of sustainable development!

With the rapid development of China's iron and steel industry, the domestic iron ore production has been unable to meet the production needs of iron and steel enterprises, and the dependence on imported ore has increased. However, a large number of low-grade refractory ores in China, especially fine-grained lean hematite, how to effectively screen and utilize such ores, then, let's learn about the clean utilization technology of fine-grained minerals and share it!

According to the new data of the third national coalfield released by the State Administration of Coal Geology, it is predicted that the low-rank coal resources with a vertical depth of 2000 meters will be 2611.816 billion tons, mainly distributed in Shaanxi, Inner Mongolia, Xinjiang and other western regions, accounting for 57.38 of the total predicted coal reserves in the country.%. However, these coal resources account for more than half of the reserves and are not suitable for direct combustion and long-distance transportation due to the low degree of coalification. Improper use of fine mineral cleaning technology can easily cause serious environmental pollution.

The technology of clean utilization of fine-grained minerals from tailings resources is suitable for the recovery of fine-grained (19-100)μm) metal minerals. The basic principle of fine mineral cleaning and utilization technology: the distribution of ore layer on the sorting surface conforms to the film structure of laminar flow slurry flow. The upper surface flow layer is mainly light minerals with small particle size and low density. The pulsation velocity of this layer is small, and its value roughly determines the lower particle size limit of the recovered minerals.

Fine-grained mineral cleaning utilization technology generally refers to slime less than 18 microns or less than 10 microns. Due to the characteristics of small quality and large specific surface area of fine ore (mud), a series of special behaviors of ore particles in the process of slurry mixing and flotation are caused.