Gold ore from the major classification is mainly for the vein gold deposits and alluvial gold deposits two types, which vein gold ore is the main case of internal geological action, mainly by volcanic, magmatic, geological action to form; alluvial gold deposits mainly by the mountain gold ore exposed in the ground, after long-term weathering, exfoliation, broken into gold sand, gold particles, gold flakes, gold froth, in the wind and water transport action gathered, deposited in the river, lake, coast, the formation of flood type, alluvial type or Coastal type alluvial gold deposits; There is another part after weathering and denudation, forming residual type alluvial gold deposits or slope accumulation type alluvial gold deposits, this kind of ore formation is generally more long time. According to the associated situation of China's gold ore types can also be divided into gold quartz veins, gold pyrite quartz veins, gold pyrite alteration granite, gold polymetallic sulphide ore vein type, gold oxide ore vein type and gold tungsten arsenic ore vein type.   Vein gold ore industrial mining grade generally in 3 ~ 5 g / ton, border grade 1 ~ 2 g / ton, alluvial gold in 0.2 ~ 0.3 g / cubic meter, border grade 0.05 ~ 0.1 g / cubic meter, but the current stage of mining gold ore in China mainly to vein gold deposits, accounting for about 75% ~ 85%.   At this stage, gold ore is widely used in jewelry, industrial, high-tech industries, etc. Because of its scarcity and non-renewable, the overall value is high. At this stage, gold ore beneficiation methods are mainly divided into four kinds: heavy separation method, flotation method , chemical separation method, and photoelectric separation method.   The re-election method is suitable for coarse-grained gold recovery, and generally belongs to the auxiliary process in gold ore beneficiation, placed in flotation or chemical sorting before as pre-selection process.   Flotation method is mainly widely used in rock deposits, the process has suction type or inflatable agitation type flotation machine for flotation.   Chemical separation method mainly has amalgamation and chlorination method, amalgamation method is mainly applicable to coarse grain monomer gold applicable, but because of its pollution, gradually be replaced, chlorination method mainly has two kinds of stirring chlorination and percolation chlorination.   The above three sorting are conventional gold ore sorting, with economic mining grade or higher than the industrial grade of gold ore, sorting cost is lower than the economic cost, but the general situation of China's gold ore rich ore less poor ore more; mining difficulty, easy to mine less difficult to mine more, most of the gold ore grade is less than 2 g / ton, belong to or lower than the critical mining grade, using the above way directly sorting, more gold ore sorting will appear below the economic mining Value.   Photoelectric sorting method grasps the pain and difficulty of domestic gold ore sorting, and uses artificial intelligence + photoelectric sorting means to enrich gold ore by pre-throwing waste to achieve higher economic mining grade, which solves the problem of low grade and high sorting cost of domestic gold ore. The working principle is mainly to crush and dissociate the original gold ore, after the artificial intelligence sorting machine to establish a multi-dimensional model of the ore, the use of AI photoelectric sorting machine technology to identify the texture, color, luster, shape, reflectivity and other comprehensive characteristics of the gold ore surface differences, after the industrial computer with artificial intelligence technology to sort out the gold ore concentrate and waste rock, so as to achieve the purpose of gold enrichment.     After the artificial intelligence ore sorting machine of the original ore, the ore particle size requirements, only the normal crushing and dissociation, particle size in 0.5cm-10cm, size with the selected particle size in 3-4 times, can be directly sorted enrichment, which throw waste tailings can be used as various types of construction, mine backfill and other materials. After the enrichment of gold ore after flotation or chemical separation method, sorting out the gold ore, pre-throwing waste reduces the processing level of the original ore, saving the processing cost of the subsequent processes.   For some gold ore below the economic mining grade, through the artificial intelligence ore sorter, can be enriched to reach the economic mining grade, enhance the use value of a large number of low-grade gold ore mine, artificial intelligence sorter is not only able to sort gold ore, for gold ore associated ore, as long as it can be broken and dissociated, can use artificial intelligence machine for sorting, enhance the comprehensive utilization rate of the mine, at the same time artificial intelligence sorter equipment The cost itself     Mingde photoelectric artificial intelligence ore sorting machine, for gold ore sorting has mature technology accumulation, can enrich gold ore under the premise of pre-throw waste tailings, and throw waste tailings gold grade is much lower than the economic mining grade.