Photoelectric separation technology contributes to the risk management of tailings At the beginning of November, the State Administration of Mine Safety issued a notice on the overall plan for the management of hidden risks in tailings reservoirs, in view of the risk hidden trouble treatment of the tailing pond, the paper puts forward the principle of organizing and implementing the measures according to local conditions, comprehensive measures, giving prominence to the key points and implementing them step by step, closing the pond and canceling the number, eliminating the risks, carrying out the responsibility, strengthening the management, considering as a whole and advancing comprehensively, according to the level of risk, carry out risk management of the tailing pond in batches and years, and strive to reach the 2026 level, about 200"Overhead depots", 700 depots with no main body of production and operation, and long-term defunct and high-risk hidden danger tailings depots have been completed nationwide. According to incomplete statistics, at present our country tailings and waste rock pile stock situation, non-metal mines (except coal mining) every year about 1 billion tons of waste rock, accumulated more than 10 billion tons;  Every year, about 3 billion tons of waste rock are added to the metal mines, and the accumulative stock of industrial solid waste such as waste rock and tailings has reached more than 70 billion tons, and is increasing continuously. If the solid waste from mines can not be discharged and stored scientifically, it will destroy woodland, occupy land, pollute water and environment, and even cause serious safety accidents. At present, in view of tailings and waste rock, the generation and utilization of tailings and waste rock can be reduced as much as possible in the production link by means of open source and throttling, existing tailings and waste rock through how from can be used to achieve utilization. Utilization of tailings It is mainly to enhance the recovery of high-value components in the tailings, and to enhance the economic benefits of the tailings. 1) the tailings are separated by photoelectric separation equipment. On the premise of increasing the comprehensive utilization ratio of the tailings greatly, the tailings are enriched for metal ores to reach the economic mining grade. The non-metallic ores are separated by equipment, and the waste rock is pre-cast to separate the non-metallic ores which have economic value. (2) to strengthen the vegetation coverage and management of the mine land, and to reduce the environmental damage and impact by means of reclamation and Afforestation. The use of waste rock 1) in the waste rock, there are also some metal ores with high value, which have high recycling value, and the grade is often higher than the corresponding primary ore grade, such as gold enrichment and recovery by means of chemical mixed flotation, sulfide concentrate grinding, cyanide leaching, photoelectric separation, etc. . 2) it can backfill the mine through waste rock and use it as mine filling material. In a word, in view of the treatment of tailing pond and the production of tailing, the Economic Benefit is the guide, and the introduction and use of new technology is the guidance. It can reduce the difficulty and cost of tailings reservoir treatment, enhance the comprehensive utilization value of the mine, reduce the long-term impact on the environment, and save a lot of tailings treatment cost. X-ray intelligent sorting machine Hefei Mingde opto-electronic technology co. , Ltd. is a national high-tech enterprise dedicated to intelligent sorting technology and X-ray integrated solutions. The company has always focused on the field of ore separation, research and production of ore color separators, artificial intelligence separators, x-ray intelligent separators, can be applied to nearly 100 kinds of metal, non-metallic ore separation applications. Its photoelectric separation technology is not only the innovation of mineral processing technology, but also has a far-reaching influence on the whole industry and mining link, such as mine, mine, tailing pond and so on. Value and advantages of photoelectric sorting Through physical separation, using the difference of ore surface characteristics or internal density difference for separation. Compared with the traditional flotation, grinding and separation of tailings into a slurry-like, difficult to deal with, deep environmental damage, photoelectric separation of materials specifications of 0.3 cm or more, the waste tailings after separation can be directly used as backfill and building materials, which reduces the difficulty of tailings treatment, improves the economic value of the mine and indirectly prolongs the service life of the mine. At the same time in line with the policy trend of mining, greatly reducing the production of tailings.

Photoelectric sorting is an important ore sorting method in ore pre-sorting. Photoelectric sorting equipment is a device that directly completes the ore sorting process. During the ore sorting process, the sorting equipment identifies the ore through its physical characteristics, mainly through the differences in color, texture, texture, shape, gloss, density and other characteristics, to achieve the sorting of useful minerals and gangue minerals. At present, the commonly used mining sorting equipment mainly includes ore color sorters, artificial intelligence sorters, and X-ray intelligent sorters. Below, we will take you to understand each type of mining sorting equipment and its applicable scope one by one, and help you correctly choose the appropriate sorting equipment. 1. Ore color sorter Ore color sorter is mainly based on the color difference of materials. It integrates optical, mechanical and electrical equipment to achieve material sorting and purification through photoelectric detection and image processing. It belongs to a color sorting ore sorter. This type of ore color sorter integrates high technologies such as light, machinery, electricity, and gas. It is widely used in material sorting to improve the quality of material products. In recent years, domestic color sorters have continuously accelerated the pace of technological innovation. Manufacturers have grown through exploration and innovation, key components have been updated, and first-line products have become increasingly mature in terms of stability, reliability, and high-precision sorting effects. The ore color sorter mainly includes a vibrating bucket, a main unit for integrated feeding, sorting and unloading, and a touch-sensitive operation panel. When working, the ore enters the crawler through the color sorter feeding hopper and is quickly transported into the sorting box. Each ore is scanned line by line through two sets of high-definition cameras, and the relevant information is transmitted to the central system through the sensor. The central system compares the wavelength or frequency of the different colors of reflected light waves of superior and inferior ores with the set parameters, and then identifies the location of the heterochromatic ore to be removed through a complex algorithm, and issues instructions to the corresponding solenoid valve, using pneumatic force for precise separation. The ore color sorter has a wide range of applications, mainly for minerals with color differences, such as quartz, calcium carbonate, barite, calcite, dolomite, potassium feldspar, wollastonite, fluorite, tungsten ore and other minerals. 2. Artificial Intelligence Sorting Machine The artificial intelligence sorting machine mainly relies on AI photoelectric sorting machine technology, and uses artificial intelligence, deep learning, big data and image visual enhancement technology to identify and sort ore. This type of sorting equipment uses artificial intelligence technology to break the original color sorting material limitation problem, greatly expand the sorting application scenario, and meet the sorting use of some difficult and complex ores. The equipment is mainly composed of a vibrating bucket, a host and a microcomputer operation platform. When working, it is necessary to manually sort a number of useful minerals and gangue minerals, and perform image acquisition and training on the artificial intelligence machine respectively. The equipment will automatically extract the surface texture, gloss, texture, shape, color and other features of useful minerals and gangue minerals to establish a sorting model. During the sorting process, the ore enters the crawler through the intelligent machine feed hopper, and enters the sorting box after rapid transportation. The upper and lower sets of ultra-high-definition cameras will perform multi-dimensional stereoscopic scanning on each ore material, and transmit the information of each ore material from the sensor to the industrial computer. It identifies useful minerals and gangue minerals through model recognition and algorithms, and issues instructions to the solenoid valve corresponding to the gangue area, using pneumatic force for precise separation. The equipment is mainly trained and modeled based on the multi-dimensional characteristics of the surface of the ore, and then identified and separated. The equipment can be adjusted according to the on-site situation, and can achieve diversified ore sorting. Artificial intelligence sorting machines are suitable for complex and difficult-to-sort minerals. As long as the ore has surface texture, gloss, texture, shape, color and other surface characteristics, it can be sorted, such as pebbles, silica, wollastonite, silicon slag, gold ore, talc, phosphate ore, coal-based kaolinite, fluorite, lithium ore and other ores. The overall sorting and accuracy and adaptability are far superior to traditional color sorters. 3. X-ray intelligent sorting machine X-ray intelligent sorting machine is mainly XRT (transmission technology), which detects the characteristic values ​​of ore size, thickness, density and the difference in the reaction of elements and atomic sequences of related components to X-rays through X-rays to achieve mine waste separation. This technology is mainly suitable for metal ores that cannot be manually sorted due to surface characteristics. Its operating principle: the ore and gangue to be sorted must have obvious differences in density. The specific process is as follows: First, a small amount of ore and gangue should be taken for training. The different densities make X-rays absorb different degrees when transmitting ore and gangue. Then the camera is used to collect and transmit. The grayscale value of the image is different after industrial computer imaging and algorithm. The deep learning model is built. When the X-ray machine is produced, the feeding system will enter the detection area at high speed from the crawler. The x-ray will transmit each ore and gangue. The self-developed multi-channel high-definition camera is successively used for signal acquisition and transmission to the industrial computer. It uses complex algorithms and image processing, and then compares and identifies with the parameters of the established model. The industrial computer will issue instructions to the gas valve at the corresponding position of the gangue, and use pneumatic force to separate the gangue to achieve the purpose of waste disposal and enrichment. X-ray intelligent sorting machine is suitable for ores with density differences such as coal gangue, lead-zinc, tin, antimony, tungsten, copper, manganese, titanium, fluorite and other metal and non-metallic ores.