Precious Metal Refining Machine

Precious metals generally refer to gold, silver, platinum, etc., and refiners refer to machines that process and purify coarse materials containing impurities and low purity to obtain high-purity materials. It is called more, gold machine, gold machine, English refiner, can also be called purification machine, recycling machine, refining machine and so on.

Large-scale refining equipment includes rotary furnace, crucible and spiral furnace, electric arc furnace, calciner, drying furnace, heat treatment machine, pulverizer, granulator, screening machine, mixer, automatic sampler, reactor, dissolver, precipitator, Electrolyzers and filter presses, etc. But these equipments are complex, with an investment of hundreds of millions, and are suitable for use in large-scale mines. In the production process of precious metal processing plants and jewelry factories, there will be loss of precious metals, and some of the lost materials will be scattered in various wastes. Waste goods, etc.), liquid (polishing liquid, wax removal water, plating solution, etc.), and waste gloves, waste towels, waste sandpaper, waste tools, etc. used in the production process. Among them, metal waste is generally recycled by jewelry manufacturers, and the rest is contracted to recyclers. For metal waste, since there is no professional recovery and purification equipment, simple recovery and treatment methods are generally used, using hydrometallurgical purification methods, using simple tools such as beakers, flasks, plastic barrels, electric furnaces, and even gas furnaces. direct heat.

An environment-friendly precious metal refiner adopting a traditional hydrometallurgical purification process, which belongs to small and medium-sized equipment, and its structure includes a reactor, a heating device, and a tail gas treatment system equipped with a condensation device. The condensing device is cooled into liquid acid through a refrigeration box, and the remaining uncooled tail gas is absorbed by spraying. Although this refiner solves the problem of waste gas pollution to a certain extent, the structure of its tail gas treatment system is too complicated and bulky. The cost is high. At the same time, the function setting of the refiner is too simple. The purification process does not filter the liquid left after the reaction, nor does it reduce the precious metal to precipitation and waste water treatment. The recovery rate of the refiner is about 95%. There is the problem of waste water polluting the environment. It is suitable for occasions dealing with more coarse materials.

The other is that micro equipment is more suitable for jewelry factories and small batch refining occasions, and can handle 5-10 kg of rough materials per day. Its structure includes measuring instruments, reactors, heaters, condensers, filters, precipitators, absorbers, storages, electrodes, etc. Aiming at the problems of waste gas, waste water environmental pollution and operational safety caused by the existing precious metal purification methods, an environmentally friendly gold and silver refiner with safe and simple operation is provided, which can achieve zero waste gas while improving the recovery rate and purity of gold and silver. Discharge and waste water are discharged in accordance with national standards. This machine has the following advantages: 1) The refining purity is high, which can reach more than 99.9%; the loss is low, and the loss rate is about 4-6‰. 2) Low refining cost and low power consumption. 3) Small size, small footprint, 2-3 square meters, suitable for jewelry manufacturers. 4) The operation is very simple, and the whole process is electrified to realize automatic control. 5) The treatment and discharge of waste gas and waste water are monitored by chemical electrodes throughout the process, and all parameters are digitally displayed, which is convenient for the operator to control. 6) Waste gas can achieve zero discharge, and the acidity and alkalinity of waste water and the concentration of metal ions are all discharged according to national standards to protect the environment.

SUNY GROUP has rich experience and complete technical equipment in solid waste recycling, especially e-waste recycling and precious metal refining. If you have related needs, please feel free to contact us.