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6. Refining

After the gold is separated from the ore, a refining stage is carried out to remove other metals that may still be present in the gold. The refining process involves the use of chemicals such as nitric acid or hydrochloric acid.

7. Electrolysis

Electrolysis is used to further purify gold. This process involves using an electric current to transfer gold from the anode to the cathode, resulting in gold with a very high purity.

8. Smelting

After the refining process, the solid gold is melted to form gold bars or pieces of a specific purity. This melting is usually carried out in a high-temperature furnace.

9. Testing and Certification

The final stage is testing the gold to ensure its purity and quality. Testing includes measuring the purity, hardness, and weight of the gold. Afterward, gold that meets quality standards will be certified indicating its purity and weight.

The entire gold processing process aims to produce the highest quality gold. Gold with a high purity level is highly valued in the market, both in the jewelry industry and for investment purposes.

Furthermore, the gold processing process must also consider environmental and occupational safety factors.

In an effort to maintain sustainability and reduce environmental impact, many gold processing industries are using more efficient and environmentally friendly technologies.

For example, gold processing without toxic chemicals or using safer and more recyclable chemicals.

It's also important to note that this gold processing process must be carried out by trained workers and adhere to strict occupational safety standards.

The use of personal protective equipment, proper chemical handling, and waste control are crucial factors in maintaining the safety of workers and the surrounding environment.

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