Transform ion resin technology leachate from adsorptive separation, purification and recovery of the metal element of not less than 70 kinds. The gold is adsorbed and recovered by anion exchange resin in the cyanidation process, and can be carried out from the clarified cyanide solution, or the resin can be added to the slurry as in the CIP method, and carried out in the cyanide or cyanide pulp. The latter is called the resin pulp process (RIP).
Ion exchange adsorption gold was proposed by R. Gans in his patents and papers in 1906 and 1909. He pointed out that ion exchange resins have the potential to extract gold from gold-containing dilute solutions and seawater. Since then, Adams and Helms first synthesized the first ion exchange resin in 1935. Next, FC Nachod proposed a method for gold extraction from ion exchange resins in 1945. In 1949, the British company successfully used IR-4B weakly basic anion exchange resin to extract gold from alkaline cyanide solution. The adsorption recovery rates of gold and silver were 95.4% and 79.%, respectively.
The former Soviet Union was the founding member of the cyanide resin pulp process. They developed and synthesized various types of anion exchange resins, and selected AM-2B bifunctional macroporous anion exchange resins as the main application varieties. They established the first RIP gold extraction plant in the Mulongtao large open-pit gold mine in the Uzbek Republic. The plant was trial-produced in 1967 and officially put into operation in 1974. The gold production this year may have exceeded 120 tons. It has been in Uzbek Angosa (2000t scale) and Russia's Siberia's North Yenisei (2500t scale), Ural's Berezovsky (2000t scale), South Ural's Kaczekler (2000t scale) and other mines. Established a RIP gold extraction plant.
The most important problems in the adsorption of gold from pulp by ion exchange resin are: (1) synthesis of resin with good selectivity to gold, high adsorption capacity, high mechanical strength and good chemical stability; (2) formulation of reasonable gold-loaded resin The desorption process not only ensures the complete desorption of gold, but also removes a large amount of ruthenium metal impurities adsorbed therein, and restores the initial adsorption capacity of the resin, so that the resin can be recycled to the cycle multiple times; (3) It has a large processing capacity and is suitable for A device in which a resin adsorbs gold (silver) from a concentrated slurry.
The ion exchange resin adsorbs and recovers gold from the cyanide solution, although it is not as economical as the zinc replacement method. However, in the resin slurry method, as in the carbon slurry method, it is not necessary to carry out the solid-liquid separation, washing and clarification, degassing and the like of the slurry, and the toughness of the resin is greater than that of the activated carbon, and the cyanide time can be shortened, and the gold in the slurry is increased. The adsorption recovery rate reduces the loss of gold-loaded finely divided resin in the tailings. However, the adsorption capacity of the ion exchange resin is larger than that of activated carbon, but the selectivity to gold and silver is much lower than that of activated carbon. The large amount of base metal impurities loaded in the gold-loaded resin complicates the desorption process, prolongs the production cycle, increases the production cost, and causes the resin slurry method to have much higher equipment investment and production cost than the carbon slurry method. This is subject to further research and improvement.
In basic terms, a hydraulic power pack is a self-contained unit that consists mainly of a motor, a reservoir and a hydraulic pump. Using fluid to transmit power from one location to another, hydraulic power packs can generate massive amounts of power which can be used to drive hydraulic machinery.
we make the design according to your detailed requirement. please email us for solutions.
mini power packs ,hydraulic power unit, power packs
GRH , https://www.grhcn.net