
What are raw ore, concentrate and tailings?
The ore that has just been mined in the mine without beneficiation or other processing is called raw ore. A small amount of raw ore can be used directly, but…
published date: 02-13-2020
Rio de Janeiro, February 11th: Brazilian Vale’s 2019 production and sales report released on the 11th showed that the company’s iron ore output in 2019 was 302 million tons, a 21.5% decrease from 2018. The dam rupture accident is an important factor leading to the decline in production.
At the end of January 2019, Vale’s tailings dam collapsed in Brumadinho, southern Brazil. Waste mud swallowed up residential areas, killing more than 250 people. After the accident, many other mining areas of the company were also shut down by the government, and production was severely hit.
In 2020, Vale plans to produce 340 million to 355 million tons of iron ore. However, the achievement of the target depends on whether the closed mines can gradually resume production.
Vale is the world’s second-largest mining company, the world’s largest iron ore miner and supplier, and the largest nickel supplier.
Zero-emission system for mine tailings
The tailings treatment system is designed for the recycling and reuse of metal and non-metal tailings, and to improve the utilization rate of resources. Well, the material sieving recovery rate is high, and all the tailwater is reused, which maximizes the resource utilization rate.
The ore that has just been mined in the mine without beneficiation or other processing is called raw ore. A small amount of raw ore can be used directly, but…
The tailings sludge treatment equipment is a kind of solid-liquid separation equipment, which can continuously work and filter a large amount of mud. It is squeezed through the belt, and…
China now produces about 110 million tons of iron tailings each year. If the iron tailings are processed and re-selected, the output of recovered iron concentrates is calculated at 60%,…
Diatomaceous earth is composed of amorphous SiO2 and contains a small amount of Fe2O3, CaO, MgO, Al2O3 and organic impurities. Diatomite is usually light yellow or light gray, soft, porous…