To enhancing mine economic benefits, preconcentration and discarding is important!

Mining resources in the mining process, due to the influence of mineral types, grades, associated minerals, etc., will directly or indirectly affect the utilization rate and economic value of mining enterprises of mining resources. Mining enterprises how to improve production and efficiency, reduce mining costs, improve resource utilization and extend the life of the mine.

At present, mining enterprises can only upgrade and improve the existing technology to a limited extent and cannot change the existing dilemma. Only to break the original confinement, through the external way, the use of new technologies and new processes, completely able to play an unexpected role.

The main problems faced by mining enterprises at this stage can be roughly divided into: the volume of tailings storage limits production, the lack of mine resources reserves, low-grade mining economic value of low-grade ore mining, high mining and processing costs and environmental protection requirements, the only way to improve the use of ore resources by mining enterprises through turning waste into treasure, reducing the cost of mining, improving the grade of the original ore mined, reducing the amount of tailings.

Combined with the above problems, there is more room for improvement mainly for the beneficiation process, through the pre-selection of ore throwing waste to optimize the beneficiation process. What is pre-selection waste, pre-selection waste is a sorting process of pre-sorting, pre-scrap and pre-enrichment of ore, which is a process of throwing out and separating foreign matter, debris and low-value ore from the ore. In the process of pre-selection and waste throwing, the minerals are sorted by intelligent and mechanized means through special sorting equipment and technology. Now the common pre-selection throwing waste mainly has photoelectric separation, gravity separation and magnetic separation, etc.

Preconcentration and discarding working principle is mainly the use of various types of characteristics of mineral differences, such as photoelectric sorting mainly to mineral characteristics differences (such as color, shape, texture, texture, luster, density difference, etc.) to identify sorting; re-election mainly to the specific gravity of minerals and foreign objects for sorting; magnetic separation mainly to the strong or weak magnetic properties of minerals for sorting. According to the characteristics of the mineral selection of the corresponding sorting method, can effectively throw a certain amount of waste rock, improve the grade and quality of minerals, can greatly improve the utilization rate of minerals and economic value.

It is worth noting that the pre-selection of waste will be affected by the dissociation degree of the minerals themselves, the smaller the size of the minerals broken down, the better the dissociation degree. The better the degree of dissociation of minerals, the greater the influence of other factors, to combine the combination of the mineral itself and external factors, using a single way or a composite way to carry out a better and more effective pre-selection of minerals to throw away. For example, suitable for photoelectric separation of ores: quartz, potassium feldspar, talc, calcite, fluorite, barite, silica slag, calcium carbonate, wollastonite, silica, pebbles, phosphate ore, tungsten tailings and other types of ores with differences in surface characteristics, can use photoelectric sorting equipment for sorting; for minerals and vein specific gravity difference greater than 0.5 part of the iron ore, barite, fluorite, azurite, garnet ore; magnetic separation is mainly used For magnetite, titanium magnetite and magnetic pyrite strong or medium magnetic iron ore, as well as non-magnetic scheelite, quartz, feldspar, galena, gold and fluorite, etc.

Preconcentration and discarding intelligent ore equipment at present, there has been a very wide range of applications, and Mingde photoelectric ore intelligent sorting as one of the leaders. Using its technical advantages to launch products with precision, high efficiency, stability, reliability and other characteristics. Launched products such as ore color sorting machine suitable for color and light transmission differences; for artificial intelligent sorting machine with differences in texture, texture, shape, luster, etc.; ore sorting equipment with density differences X-ray intelligent sorting machine, as well as large particle size heavy machine, suitable for dry or wet sorting dry and wet sorting machine, can fully meet the sorting requirements of different precision, different particle size, different output, different site conditions .