Treatment method of tin ore tailings

Treatment method of tin ore tailings

Tin ore tailings refer to the remaining part after extracting tin from tin ore. Since tin ore tailings contain a lot of harmful substances, such as heavy metals and Radioactive element, appropriate treatment methods must be taken. This article will introduce the treatment methods of tin ore tailings, including physical treatment, chemical treatment, and biological treatment.

Physical processing

Physical treatment refers to the separation of harmful substances from tin ore tailings through physical methods. Common physical processing methods include gravity separation, magnetic separation, and screening.

Gravity separation refers to the separation of materials by using their density differences. Place the tin ore tailings on an inclined surface, add water, and separate them into different layers by tilting the surface. Gravity separation can separate some heavy metals and Radioactive element.

magnetic separation refers to the use of the difference between magnetic and non magnetic substances in a material to separate them. Place the tin ore tailings in a magnetic separator and separate the magnetic substances through magnetic force. Magnetic separation can separate some substances containing iron.

Screening refers to the use of a sieve to separate materials. Place the tin ore tailings on a sieve and separate them into different particle sizes through screens of different particle sizes. Screening can separate some particulate matter.

chemical treatment

Chemical treatment refers to the use of chemical methods to convert harmful substances in tin ore tailings into harmless substances. Common chemical treatment methods include leaching, precipitation, and ion exchange.

The leaching method refers to soaking tin ore tailings in chemical reagents and converting harmful substances into harmless substances through chemical reactions. Commonly used leaching reagents include acids and bases.

The precipitation method refers to the chemical reaction of harmful substances in tin ore tailings into precipitates, which are then separated. Common precipitation reagents include Calcium hydroxide, Iron(III) oxide-hydroxide, etc.

The ion exchange method refers to the use of ion exchange resin to exchange harmful ions in tin ore tailings with harmless ions on the resin, thereby separating harmful ions. Some Radioactive element can be separated by ion exchange.

biological treatment

Biological treatment refers to the use of microorganisms to convert harmful substances in tin ore tailings into harmless substances. Common biological treatment methods include microbial oxidation and microbial reduction.

Microbial oxidation method refers to the use of microorganisms to oxidize harmful substances in tin ore tailings into harmless substances. Commonly used microorganisms include nitrifying bacteria and nitrobacteria.

Microbial reduction method refers to the use of microorganisms to reduce harmful substances in tin ore tailings into harmless substances. Commonly used microorganisms include reducing bacteria and sulfate reducing bacteria.

conclusion

In summary, the treatment methods for tin ore tailings include physical treatment, chemical treatment, and biological treatment. Different treatment methods are applicable to different harmful substances, and appropriate treatment methods can be selected according to the actual situation. When handling tin ore tailings, it is necessary to pay attention to environmental and safety issues to avoid harm to the environment and human health.

Treatment method of tin ore tailings