TOP Thiourea Manufacturer | thiourea leaching gold silver ore

Thiourea leaching is an interesting topic, especially when it comes to extracting gold and silver from various sources. Let’s dive into it:

1.Thiourea Leaching for Gold Recovery:

●Thiourea (CH₄N₂S) has gained attention as an alternative lixiviant for gold leaching due to its fast reaction kinetics and less harmful nature compared to traditional methods.

●Gold is widely used in electronics, especially for contact points and external connectors. Recovering gold from electronic waste (e-waste) is a significant motivation for recycling.

●Although pyrometallurgy and cyanidation are common methods for gold recovery, they have drawbacks such as high energy consumption and the use of harmful lixiviants.

●Thiourea has successfully bridged the transition from primary ore leaching to gold leaching from secondary sources like e-waste.

●Various oxidants (such as oxygen, ozone, hydrogen peroxide, etc.) are employed to enhance gold leaching in thiourea solutions.

2.Silver Leaching with Thiourea:

●In a neutral medium (pH 5-7), silver sulfide forms a nonprotective layer on the silver chloride surface. This layer gradually dissolves in the presence of thiourea.

●Early researchers used thiourea to dissolve both gold and silver in sulfuric acid (H₂SO₄) and hydrogen peroxide (H₂O₂).

3.Sustainable Approaches:

●Researchers are exploring sustainable hybrid bioleaching-based systems for gold recovery from e-waste using thiourea.

●The goal is to create a closed-loop system, aligning with the principles of a circular economy.

4.Technical Literature and Process Development:

●Thiourea has potential for extracting gold and silver from refractory ores and concentrates that justify its use as a reagent.

●Recent technical literature covers process development and fundamental contributions in thiourea leaching.

The choice of leaching method depends on the specific context, ore type, and economic considerations. If you have any more questions or need further details on thiourea, feel free to contact me!

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Sinhon Chemical focuses on high-quality thiourea production and manufacturing.  The thiourea we produce has high purity, good quality and stable product performance. The annual production capacity is 20,000 tons, the inventory is sufficient, and the supply is stable. we also deal in other products, such as molecular sieves, silica gel desiccant, aniline, methylene chloride, chloroform, sodium hydroxide, propylene oxide, etc. 

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