Study on Recycling of Valuable Ingredients in Tailings

There are a series of advantages of the tailings re-selection, such as the ground tailings can save mining and grinding costs, greatly reducing mine production investment. However, a variety of flotation agents on the tailings have a greater impact on the selection of the tailings re-selection process and the amount of pharmaceutical dosage and exfoliation. At the same time, the tailings often contain a large number of slime that affects the flotation index. Therefore, it is necessary to make predictive desliming to eliminate the impact of slime on flotation.

In general, the mine with a long history contains more valuable component. According to the related research, in the recovery of a single copper element, when the copper price is no less than 35,000 RMB one ton, the economic grade of the copper tailings secondary use is 0.07%.

Sulfur concentrate is an important raw material for chemical products, mainly used in the manufacture. The iron grade of the 45% sulfur concentrate can be up to 60% after calcined cinder and can be used as raw materials for the steel industry. The accumulation of sulfur tailings bring huge economic losses to the enterprise and bring a greater impact on the surrounding environment. If the sulfur tailings discharge into the tailings, the increase of the tailings acidification affects the water quality and pollutes the surrounding environment. According to the study of one sulfur tailing, the tailings were treated with flotation obtain 40.81% sulfur concentrate grade and 79.9% recovery rate.