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99.99% High Purity Gold Electrolysis From Gold Wet Way Purification
we specialize in new technology research and development, new machine research and development, technology promotion, production process and workshop design of various precious metal smelting, electrolysis and environmental protection, as well as all-round service businesses such as design and manufacturing of various professional customize equipment, overall workshop equipment installation, operator training, organization and guidance of trial production
Charactors:
(1) Casting anode plate: the crude gold raw material with 99% gold content is melted into the medium frequency smelting furnace and cast into a gold electrolytic anode plate.
(2) Electrolyte preparation and waste electrolyte recovery: gold electrolyte is prepared by dissolving pure gold in aqua regia and diluting it with hydrochloric acid aqueous solution.
(3) Electrolysis: hang the anode plate into the gold electrolysis cell and start the gold electrolysis equipment for electrolysis.
The company's high-efficiency gold electrolysis unit (as shown in the figure) is developed based on years of experience in gold refining projects and customer suggestions. It adopts integrated and integrated design. The whole machine includes a single electrolytic cell, circulating pump, rectifier power supply, automatic electrolyte replenishment system, electrolytic flue gas condensation recovery system, electrolyte temperature, voltage, current The copper bar temperature intelligent monitoring system, the rectifier power supply is closed separately, isolated from the acid gas in the workshop, and has a long service life.
With a number of domestic patents and advanced technology, it has the following advantages:
① The product quality is stable and can meet the gold ingot standard of au99.99 (grade I) of Shanghai Gold Exchange; it can also produce gold ingots with purity of 99.99% according to the special needs of customers;
② Low production cost: about 0.02 yuan / gram gold;
③ The electrolysis adopts AC / DC superimposed power supply, which can effectively inhibit the generation of silver chloride on the gold anode and make the anode plate electrolysis more thorough;
④ High current density electrolysis technology; cathode current density up to 1200A / m2, high production efficiency;
⑤ The electrolytic cell is designed with a transparent closed smoke cover to prevent smoke from escaping, which is easy to operate and beautiful;
⑥ A flue gas condensing device is set. Due to the high temperature (60-70 ℃) required by the gold electrolysis process, the flue gas condensing device can condense the reflux volatile electrolyte to avoid the loss of gold;
The main material of the equipment is high performance polypropylene material, adding anti-aging agent to the material, which greatly prolongs the service life of the equipment. The whole bracket material is PPH, and the corrosion resistance is very strong; the cathode and anode conductive bar material is titanium coated copper with excellent conductivity.
This set of gold electrolysis unit is designed with PLC automatic operation system, controlled by touch screen, and has the function of electrolytic parameter storage. When the electrolytic voltage, current and copper bar temperature are abnormal, the rectifier power supply can be directly interlocked to stop. The whole set of equipment is simple, safe and convenient.
| No | details | machine name | Specification | material | Unit | quantity |
| 1 | Gold refining complete equipment gm-jdj-3 | Electrolytic cell | Non standard; Refining capacity 3kg / D | PPH | pcs | 1 |
| 2 | Magnetic pump | MP-20RM | Fluorine lining | set | 1 | |
| 3 | Conductive copper bar | Non standard; The material is No. 1 red copper, and the specific size is according to the picture. | Red copper | set | 1 | |
| 4 | Cathode and anode conductive bars | Titanium clad copper | titanium | set | 1 | |
| 5 | Electrolytic cathode | Titanium plate (pure titanium) | titanium | set | 1 | |
| 6 | High level tank | 30L | Glass | set | 1 | |
| 7 | condenser | 1.5m2 | Glass | set | 1 | |
| 8 | Titanium screws | Rectifier power supply, heating, lighting, control panel | titanium | set | 1 | |
| 9 | Electric control system | Non standard; Material PPH | combination | set | 1 | |
| 10 | Trough support | Flat die, matching for gold electrolysis | PPH | pcs | 1 | |
| 11 | Anode mould | Specification and model | High purity graphite | set | 5 |
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Recovering Precious MetalsRecovering Precious Metals From Waste Printed Circuit Boards (WPCBs)To address the key challenges of efficiently separating and recovering precious metals from waste printed circuit boards (WPCBs) and achieving a win-win outcome of economic and environmental benefits in the resource utilization of electronic waste, the following process is developed:
First, WPCBs are pulverized into particles via mechanical processing technology. The obtained particles are then separated into metallic and non-metallic fractions under the action of a high-voltage electrostatic field. After that, two liquid phase separation systems are constructed successively for the recovered metallic fractions: the Fe-Cu high-temperature liquid phase separation system and the Cu-Pb relatively low-temperature liquid phase separation system.
Next, by leveraging the selective partitioning rule of components in the WPCB metallic fractions in the aforesaid liquid phase separation systems, base metals and other non-ferrous metals are separated with high efficiency, while nearly all precious metals are enriched in the Cu-rich phase.
Subsequently, hydrometallurgical technology is adopted to separate and recover precious metals from the small amount of Cu-rich materials loaded with highly concentrated precious metals. This process can significantly reduce the consumption of chemical reagents during the separation and recovery of multi-component metals, and mitigate the ecological and environmental hazards posed by electronic waste.
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1)Mix gold tailings sand with water to prepare ore pulp;
2)Subject the ore pulp to ultrafine treatment to reduce the particle size to below 2 μm. A chemical reagent containing functional groups capable of forming coordination compounds with gold ions can be added either before or during the ultrafine treatment, so that the chemical complexation reaction proceeds synchronously with the ultrafine treatment; alternatively, the chemical reagent can be added after the ultrafine treatment to allow sufficient complexation reaction to complete;
3)Carry out solid-liquid separation and retain the liquid phase, which contains gold complex ions.
This extraction method boasts mild operating conditions, low production cost, low reagent consumption, fast extraction speed, and an extraction rate as high as 98%. Furthermore, the solid residue left after extraction can be further used to produce ceramic tiles, mineral admixtures for concrete and lightweight hollow wall materials. After drying, it can also serve as a filler for rubber or plastics, thus realizing full reutilization of resources and turning waste into wealth.
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This process comprises a series of hydrometallurgical recovery procedures for rare and precious metals: slurrying, coarse grinding and ultrafine grinding leaching at ambient temperature, followed by subsequent steps including heated leaching, filtration and washing, platinum precipitation by cementation, and nickel recovery.
While improving the leaching efficiency of spent petrochemical catalysts, this process can shorten leaching duration, reduce energy consumption and lift the recovery rate of rare and precious metals. Meanwhile, waste gas is effectively treated, water is recycled, and a sound production environment is guaranteed.
