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茄子视频APP , black catching agent and phenolic compounds commonly used in beneficiation emit an unpleasant special smell in water, which is very harmful to humans and animals.

Tailings pollute the environment and endanger health

茄子视频APP Tailings pollute the environment and endanger health

Tailings dam failures Tailings dam failures

茄子视频APP Tailings is required to be stored in the tailings ponds, and the tailings ponds need to be constantly managed and maintained.

茄子视频APP Due to the complex chemical characteristics of tailings and the special construction and operation methods of tailings ponds, the storage of them and management of their ponds should be monitored regularly, which takes a lot of manpower and funds.

And tailings dams have a higher risk of dam break than reservoir dams. Once a dam failure occurs, it must cause a number of deaths. Tailings dam failures are the scariest dangers. The safety of residents near the tailing dams can’t be guaranteed under the current situation.

茄子视频APP Scientists conducted a statistical analysis of 3,500 tailings dams worldwide and found that the probability of dam failure is more than 10 times that of reservoir dams.

茄子视频APP On July 19, 1985, a dam break at the Stava tailings dam in Italy killed 268 people, which was the worst tailings failure all over the world.

In 2019, VALE Group's tailings dam failure in Minas Gerais killed more than 200 people and deprived over 3,000 residents of their homes. VALE paid $ 107 million to distressed families and employees affected by the accident.

茄子视频APP The accident caused the company's iron ore production capacity to fall severely by more than 40 million tons, and the loss was close to $ 7.4 billion, and even pushed the global iron ore price to a two-year high.

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Tailings: turning wastes into treasures

Some enterprises have begun to turn their eyes on the development and utilization of tailing resources due to the depletion of the world's mining resources and the promotion of environmental protection measures.

Breakthroughs have been made in the use of tailing wastes. For example, some investors extract metals and non-metal elements in tailings and process them into building materials and soil conditioners, etc.

Tailings can bring more profits

Tailings can bring more profits

Tailings are re-sorted for concentrates

Limited by technical conditions in the past, the rate of the ore beneficiation was extremely low, and the comprehensive utilization of minerals was insufficient, which makes many valued minerals have been piled up and even being discharged into tailings.

With the advancement of science and technology, some enterprises have begun to redress these tailings and achieved some economic benefits. For example:

茄子视频APP 1. Some magnetite tailings in China contain 20% iron minerals, which is redressed by strong magnetic separators to obtain iron concentrates with a grade of 60%;

2. An iron ore beneficiation plant in Indonesia used a CTB1024 magnetic separator茄子视频APP to re-separate iron ore mine waste, and obtained high-quality iron concentrates with a grade of up to 65.76% and an annual output of 39,200 tons of iron concentrates;

茄子视频APP 3. Peruvian copper mining companies have improved on-site production processes to increase copper and gold dressing rates. At the same time, a sulfur beneficiation facility is added, which brings an annual output value of 1.8 million U.S. dollars.

Iron tailings beneficiation line designed by FTM

Iron tailings beneficiation line designed by FTM

Tailings are used for building materials production

茄子视频APP 60% of Russian beneficiation plants use tailings to produce building materials. In addition to manufacturing building glass-ceramics and chemically resistant glass, various mineral cementing materials have also been developed;

In the United States, except for the recovery of fluorite, feldspar, and quartz from tailings rocks, most of them are used for concrete aggregates, foundation and asphalt pavement materials, and tailings have been separated to produce bricks with compressive strength of 35 MPa;

茄子视频APP *Case:

茄子视频APP Japan uses flotation iron ore tailings and coal tailings as the main raw materials to make sewer clay pipes, and the Japanese Institute of Pollution Data has patented the use of them as lightweight porous material;

China applies iron ore tailings to non-fired bricks, glass, glass-ceramics, fine concrete aggregates, and road bases. Among them, the base of roads requires a large number of filler tailings will bring a significant economic and environmental benefit to road construction.

茄子视频APP *Case:

Turning tailings into building materials

Turning tailings into building materials

Tailings for fertilizer and soil conditioner

茄子视频APP Tailings often contain trace elements such as Zn, Mn, Cu, Mo, V, B, Fe, and P, which are essential for maintaining plant growth and development.

The tailings discharged by some dressing plants in Japan are alkaline. In the rice planting experiment, these tailings neutralize acidic soil and can improve the quality of acidic soil.

Tailings for mines' filler

Backfilling the mine goaf is one of the most effective ways to directly use tailings. Especially for mining enterprises that can’t set up a tailing pond, backfilling the goaf by tailings has greater environmental and economic significance.

The tailings cementation and filling method is a mature technology now, which can increase the rate of underground mining recovery by 20-50%. The ideal filling method can completely avoid surface subsidence and basically avoid disrupting groundwater balance.

茄子视频APP There are many uses of tailings, such as for the production of calcium carbonate and silica aerogels, and so on. It is believed that with the advancement of science and beneficiation technology, more treatment of tailings will be gradually discovered.

The successful cases of tailings utilization

Conclusion

Tailing have become the most important issue which obstructs the global sustainable development. Whether from the perspective of the global or any country, the improvement of tailings facilities is very necessary to the socio-economic and environment.

Tailings are not waste but treasures that are not fully excavated due to current technical and economic conditions.

茄子视频APP With the development of science and technology, the improvement of beneficiation techniques, the upgrade of dressing facilities and the simplification of operations, the tailings will become precious resources and bring huge economic benefits to more and more enterprises.

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Author : Jordan Jordan is the writer of the blog with a broad knowledge of this industry. Most importantly, he hopes to help you in your projects sincerely.

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