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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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Low-Grade Gold OreHeap Leaching Process for Low-Grade Gold Ore Based on High Pressure Grinding Roll ComminutionHeap Leaching Process for Low-Grade Gold Ore Based on High Pressure Grinding Roll Comminution
This heap leaching process for low-grade gold ore based on high pressure grinding roll (HPGR) comminution falls under the technical field of metallurgy, and is implemented in accordance with the following steps:
① The run-of-mine (ROM) gold ore is first subjected to open-circuit coarse crushing, and all coarse crushed products are fed into the secondary crushing system, followed by classification via a vibrating screen. Coarse oversize materials are returned to the secondary crushing equipment for further comminution, while undersize materials with qualified particle size are delivered into the HPGR.
② The HPGR performs open-circuit fine crushing, and the crushed products are treated through the combined operation of a wet vibrating screen and classification equipment. The finer overflow product is fed into the all-slime cyanidation leaching system, while the underflow (settled sand) and coarse-grained materials are mixed with an appropriate amount of lime for alkali adjustment, then transported to the leach pad for heap construction, realizing the classified leaching process for gold ore materials.
③ Upon completion of leaching, gold-bearing pregnant solution and tailings are obtained.
This process adopts HPGR open-circuit fine crushing, whose crushed products feature finer particle size and abundant surface microcracks. It can significantly improve the gold leaching rate, reduce the consumption of leaching agents, and shorten the heap leaching cycle. While the heap leaching operation is carried out, the fine-grained classified products are also recovered simultaneously.
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Recovering Gold from Gold Iodide Waste LiquorRecovering Gold from Gold Iodide Waste LiquorThe process comprises the following steps: preparation of a mixed system of sodium iodate, sodium iodide and water; production of complex salts of Au(I) and Au(I₃) under the action of the as-prepared mixed solution and a co-oxidant; extraction of crude gold powder; and purification to obtain refined gold powder.
Compared with the prior art, the gold iodide leaching method adopted in this process significantly improves the extraction recovery and purity of the recovered gold. Meanwhile, the process features simple operation, low environmental risk of the involved chemicals, and low cost, thus reducing production cost and improving production efficiency. Furthermore, iodine can be recycled and reused in the process, which further cuts production costs.
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Pollution-Free Smelting ProcessPollution-Free Smelting Process for Lead-Bearing Gold Concentrates from Knelson Gravity ConcentrationThe lead-bearing gold concentrates are treated with the independently developed crystallization washing technology, which enables hydrometallurgical separation of impurities including lead, iron and sulfur during gold smelting and extraction. This process features innovative and unique design, strong adaptability, and wide applicability for refining lead-bearing concentrates (including middlings) obtained from Knelson gravity concentration. It also provides high reference value for the processing of other lead-bearing concentrates.
An increasing number of domestic gold mining enterprises in China have adopted the Knelson gravity concentration process. At present, most Knelson gravity concentrates are processed via pyrometallurgical smelting, which is associated with harsh working conditions and high risk of lead poisoning. The application of this new process can thoroughly address the lead pollution problem, thus filling the domestic gap in this technical field.
