The new technology of Sangao Mining Machinery’s gold beneficiation equipment meets the different requirements of customers. It is equipped with a variety of gold beneficiation processes. The successfully developed and successfully developed gold ore flotation leaching desulfurization process has been well applied in practice and effectively improved the beneficiation grade. And the recovery rate can reach 98%.
The content of gold in the ore is extremely low. In order to extract gold, the ore needs to be crushed and finely ground and pre-enriched or separated from the ore by beneficiation methods. Gravity separation and flotation are frequently used in gold beneficiation. Gravity separation occupies a very important position in the production of placer gold. Flotation is a beneficiation method widely used in rock gold mines. At present, about 80% of rock gold mines in my country Using this method to select gold, the level of beneficiation technology and equipment has been greatly improved.
The amalgamation gold extraction process is an ancient gold extraction process, which is simple and economical, and is suitable for the recovery of coarse-grained monomer gold. Many gold mines in my country still use this method. With the development of gold production and the progress of science and technology, the gold extraction process of amalgamation method has been continuously improved and perfected. Due to the increasingly stringent environmental protection requirements, some mines have cancelled the amalgamation operation and replaced it with the gold extraction process by gravity separation, flotation and cyanidation.
In gold production, the gold extraction process by amalgamation still plays an important role, and there are application examples at home and abroad. Many gold mines such as Zhangjiakou in Hebei, Erdaogou in Liaoning, Jiapigou in Jilin and Yinan in Shandong have applied this process. The Erdaogou gold mine in Liaoning was originally a single flotation process. According to the nature of the ore, it was changed to a combined amalgamation and flotation process. The total recovery rate was increased by 7.81% (the amalgamation recovery rate was 64.6%), and the tailing grade was increased from 0.74g/t Reduced to 0.32g/t, the annual benefit is 1.58 million yuan. The key to the amalgamation gold extraction process is how to take protective measures to eliminate mercury poisoning pollution.
The Sangao gold beneficiation production line is composed of jaw crusher, ball mill, classifier, flotation machine, leaching adsorption tank, thickener and dryer, etc., and can be combined with feeder, hoist and conveyor to form a complete beneficiation production line. The production line has the advantages of high efficiency, energy saving, high processing capacity and reasonable economy.
The production process of the beneficiation production line is as follows: the mined ore is initially crushed by a jaw crusher, and after being crushed to a reasonable fineness, it is evenly sent to the ball mill through a hoist and a miner, and the ore is crushed and ground by the ball mill. The ore fines ground by the ball mill enter the next process: classification. The spiral classifier cleans and classifies the ore mixture based on the principle that the solid particles have different specific gravity and different precipitation speeds in the liquid. When the cleaned and graded mineral mixture passes through the magnetic separator, due to the different specific magnetic susceptibility coefficients of various minerals, the magnetic substances in the mixture are separated through magnetic and mechanical forces. After the initial separation of the magnetic separator, the mineral particles are sent to the flotation machine, and different drugs are added according to the characteristics of different minerals to separate the desired minerals from other substances. After the required minerals are separated, because they contain a large amount of water, they must be initially concentrated by a thickener and then dried by a dryer to obtain dry minerals.