1. Leaching
Platinum chlorination leaching is carried out under specific temperature and acidity conditions, with strong oxidants such as aqua regia and sodium chlorate (NaClO₃) as reactants. In this step, all base metals and precious metals are oxidized and dissolved into the solution, while silver forms silver chloride precipitate and remains in the solid residue. After the chlorination residue settles completely, filtration is performed, and the filter residue is washed with 3N hydrochloric acid until it turns colorless.
2. Neutralization
The leachate has a relatively high acidity. Sodium hydroxide (NaOH) is added to adjust the pH to 1, followed by filtration. The obtained filter residue is washed with hydrochloric acid pre-adjusted to pH 1 until no color remains.
3. Platinum Precipitation
At a specified temperature, ammonium chloride is added to the filtrate collected after neutralization and filtration until no more yellow precipitate is generated upon further addition of ammonium chloride. The feed solution is then rapidly cooled to room temperature, left to stand for clarification, and filtered afterwards. The filter residue is washed 2 to 3 times with 10% ammonium chloride solution at ambient temperature.
4. Roasting
Note: An obvious input typo is present in the original Chinese text. The mistyped term in the original actually refers to ammonium chloroplatinate, the solid precipitate collected from the platinum precipitation step.
The ammonium chloroplatinate is placed in a muffle furnace for roasting. Under high temperature, ammonium chloroplatinate decomposes into light gray platinum sponge. After being taken out, the platinum sponge is ground, and then subjected to repeated processes including chlorination, neutralization, oxalic acid-based gold removal, ammonium chloride platinum precipitation, and roasting. The above purification procedures are repeated several times until platinum powder with relatively high purity is obtained.
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gold recovery equipmentgold recovery equipmentDetails of gold recovery equipment
1. Function introduction: The electrolytic gold extraction machine is a technology for wet refining and purification of metals. It can selectively electrolyze valuable metals and is especially suitable for the selective electrolysis (electrolysis) of low-content solutions and solutions with complex components in the metallurgical industry. (accumulation) separation and purification, as well as the recovery of heavy metal ions in wastewater.
2. Technical advantages of gold ecovery equipment:
1）It has the ability to process low-concentration metal solutions, and has higher production efficiency than traditional electrolysis technology to enrich valuable metals in a wider range, from a few tenths of a gram/liter to a few hundred grams/liter of metal concentration for electrolytic production and metal The ability to separate. In particular, it has unparalleled technical advantages in copper-nickel separation and copper-silver separation;
2） It has stronger adaptability to pollutants in the solution and can extract high-purity metals from solutions containing impurities;
3）It has the ability to extract a variety of metals and has the ability to selectively electrolyze metals, and can produce different forms of cathode products (sheets or metal powders) according to the concentration of the solution;
4） The equipment is modular and easy to operate.
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gold recovery machinesilver/gold recovery machine,silver/gold refining equipment,silver/gold refining equipmentInstruction Of Gold Recovery Machine：
The new version gold recovery machine an intelligent touch screen, low-voltage extraction technology, supports fully automated intelligent operation, and offers automatic/manual mode.
The JQ series uses electrolysis to adsorb gold, silver, copper, and other precious metal ions from solutions onto the cathode. Once a certain weight is adsorbed, the precious metal sheets (gold, silver, copper, etc.) are stripped from the cathode. This equipment enables safe and efficient refining and recovery of various solutions containing gold, silver, or copper, ultimately converting the ions in the solution into pure precious metal form.
Product Advantages:
1、High-efficiency recovery of gold, silver, copper, and other valuable metals;
2、Precious metal purity ≥ 99%, with an ion recovery rate ≥ 99%;
3、Low-voltage extraction, highly efficient, and odor-free.
Model Specifications：
Model
JQ-DJC-L3
Product Name
Gold Recovery Machine
Dimensions
43 x 29 x 58 cm
Rated Voltage
220 V
Power
120 w/h
Weight
45 kg
Capacity
18 L~oo
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gold extraction machinegold extraction machine,gold recovery equipmentProduct Introduction of Gold Extraction Machine:
Swirl electrowinning is a wet metallurgical technology used for the selective electrowinning and extraction of gold. It is particularly suitable for the selective electrolytic separation and purification of valuable metals from low-concentration or complex-composition solutions in the metallurgical industry, as well as for the recovery of gold from wastewater.
Advantages of Gold Extraction Machine:
1)、Capable of processing low-concentration metal solutions with higher production efficiency compared to traditional electrolytic technologies. It can enrich valuable metals across a wide range of concentrations, from fractions of a gram per liter to hundreds of grams per liter, especially excelling in copper-nickel and copper-silver separation.
2)、Strong adaptability to pollutants in solutions, enabling the extraction of high-purity gold from impure solutions.
3)、Capable of extracting multiple metals with selective electrolysis, and able to produce cathode products in different forms (plates or metal powders) depending on solution concentration.
4)、Modular equipment design with simple operation.
Model parameters of gold extraction machine
Product model
Product Name
Dimensions（mm）
Rated Voltage
Power
Weight（kg）
JQ-DJC-L1
gold extraction machine
450*300*600
220V
300w/h
45kg
JQ-DJC-L3
gold extraction machine
900*1010*800
380V
1500w/h
125kg
JQ-DJC-L4
gold extraction machine
1220*1010*800
380V
2.5kw/h
150kg
JQ-DJC-L5
gold extraction machine
1520*1010*800
380V
3kw/h
180kg
Current: Single tank designed for 100A, voltage 5V.
Each small tank can process approximately 200L of solution. Single or multiple tanks can be selected based on production requirements, with processing speed varying according to concentration.Result of Gold Extraction Machine:
