A kind of flotation process simplified return water treatment method

Abstract

The invention discloses a simplified backwater treatment method of a flotation process. The method comprises the following steps: step one, taking at least one of copper concentrate water, lead copperconcentrate overflow water, copper-lead concentrate overflow water, zinc concentrate overflow water, sulfur concentrate overflow water, manganese concentrate water and tailing overflow water as a first group of backwater, enabling the first group of backwater to directly enter coarse-grained sulfur concentrate for adsorbing, adsorbing the first group of backwater containing a collecting agent oncoarse-grained sulfur concentrate, enabling the adsorbed first group of backwater to enter a high-level water tank for ore grinding operation and / or lead flotation operation; and step two, taking zinctailing overflow water as a second group of backwater, enabling the second group of backwater to directly enter coarse-grained sulfur concentrate, carrying out desorption of the collecting agent adsorbed on the coarse-grained sulfur concentrate and enabling the collecting agent to enter the second group of backwater, enabling the discharged second group of backwater to enter the zinc flotation operation and taking the discharged second group of backwater as water applied to zinc flotation. Through the simplified backwater treatment method of the flotation process, the content of organic chemicals with influence on separation of multiple metals in the backwater can be reduced due to the adoption of self adsorption-desorption features of pyrites; the multiple metals are separated under thebackwater condition; the recycling rate is increased; the treatment cost is reduced.

Description

technical field [0001] The invention relates to the field of ore dressing wastewater treatment, in particular to a simplified backwater treatment method for a flotation process. Background technique [0002] Flotation process introduction: At present, the flotation process is divided into three parts, the first part is the copper-lead or lead flotation part, the second part is the zinc flotation part, and the third part is the sulfur flotation part. The main influencing factors of the backwater are The collector used in the second part and the third part, because it remains in the backwater, will have an adverse effect on the separation of polymetallic when the backwater returns to copper-lead or lead flotation, making the target copper that needs to be separated The grade of lead mineral or lead mineral decreases, and the impurity content increases, which in turn affects product quality and the recovery rate of each metal, and at the same time deteriorates the entire flotat...

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Problems solved by technology

[0002] Flotation process introduction: At present, the flotation process is divided into three parts, the first part is the copper-lead or lead flotation part, the second part is the zinc flotation part, and the third part is the sulfur flotation part. The main influencing factors of the backwater are The collector used in the second part and the third part, because it remains in the backwater, will have an adverse effect on the separation of polymetallic when the backwater returns to copper-lead or lead flotation, making the target copper that needs to be separated The grade of lead mineral or lead mineral is lowered, and the impurity content is increased, which affects the product quality and the recovery rate of each metal, and also deteriorates the entire flotation process

[0003] In order to eliminate the influence of backwater, backwater treatment technology is generally adopted. First, metal ions and suspended solids that affect flotation are removed in the backwater, and then through physical and chemical treatment technology, oxidation treatment technology, catalytic oxidation treatment technology, biological treatment technology and biochemical Treatment technology and other methods to remove organic matter to ensure that the backwater will not affect the separation of polymetallics. This backwater treatment process is as follows: figure 1 As shown, but the main disadvantage of this method is that the processing cost is higher

[0004] In order to reduce the cost of backwater treatment, the return water treatment technology is adopted to divide the backwater into multiple groups and return to their respective operations. However, nearly 50% of the water still needs to be treated. This part of the water treatment method is the same as the above process, and it is also First remove metal ions and suspended matter that affect flotation in the backwater, and then remove organic matter through physical and chemical treatment technology, oxidation treatment technology, catalytic oxidation treatment technology, biological treatment technology and biochemical treatment technology to ensure the separation of polymetallics in backwater It will not have any impact. The current backwater treatment process of fractional reflux is as follows: figure 2 As shown, but this kind of return water treatment process of separation and reflux still has the problems of high operating cost and complicated process because nearly 50% of the water still needs to be treated with traditional return water

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