The first type: high arsenic, carbon, and sulfur type gold ore. This type contains more than 3% arsenic, 1-2% carbon, and 5-6% sulfur. Using conventional cyanide gold extraction technology, the gold leaching rate is generally 20-50% and requires a large amount of Na2CN. Although a higher gold concentrate grade can be obtained when enriched by flotation technology, the content of harmful elements such as arsenic, carbon, and antimony in the gold ore is high, which affects the next step of gold extraction technology.

The second type: gold-containing ore in which gold is encapsulated in gangue minerals and harmful impurities in fine particles and microscopic forms. This type of metal sulfide content is small, about 1-2%. The fine gold embedded in the gangue mineral crystals accounts for 20-30%. The gold recovery rate is very low when conventional cyanide gold extraction or flotation is used for enrichment.

The third type: gold ore with a close relationship between gold, arsenic, and sulfur. Its characteristics are that arsenic and sulfur are the main carrier minerals of gold, and the arsenic content is medium. This type of ore has a low leaching index using a single cyanide gold extraction process. If the flotation method is used for enrichment, gold can also obtain a higher recovery rate index, but it is difficult to sell due to the high arsenic content.

To treat these difficult-to-treat gold ores, pretreatment methods such as roasting, pressure oxidation, chemical oxidation, etc. are usually required to improve the recovery rate of gold. Although these methods can improve the leaching efficiency of gold, they may be accompanied by problems such as large investment and environmental pollution.

In the pretreatment of gold mine,Mingder X-ray intelligent sorting equipment can help quickly identify and separate gold-containing particles, especially for those ores that are not much different from the color and crystal morphology of gangue minerals. Such a pretreatment step can significantly improve the grade of gold ore and reduce the complexity and cost of subsequent mineral processing. No reagents are required, and the only energy consumption is electricity, which has the characteristics of pollution-free and low energy consumption.

Working principle of X-ray intelligent sorting equipment:

X-ray intelligent sorting equipment usually includes a feeding system, an irradiation and detection system, an information processing system, and a picking execution system. After the ore sample is transmitted by X-rays, different minerals will absorb different intensities of X-rays due to differences in physical properties such as density and composition. This information is captured and converted into electrical signals, which are then analyzed by the information processing system to determine the composition of each ore particle. Finally, based on the analysis results, the execution system automatically sorts out particles containing the target mineral.