Self-adaptive flotation foam de-foaming device and de-foaming method

Abstract

The invention relates to the field of mineral processing flotation equipment, and specifically discloses a self-adaptive flotation foam de-foaming device and a de-foaming method. The device comprises a flotation foam tank, a sliding support arranged on the flotation foam tank, and a self-adaptive control de-foaming system used for controlling the reciprocating movement of the sliding support on the flotation foam tank. According to the invention, the de-foaming method is an advanced, high-efficiency, pollution-free and continuous novel flotation foam removing method. With the device and the method, a foam control difficulty caused by large foam amount, viscous foam, and low foam fluidity when a collecting agent such as amine is used in mineral flotation is solved. With the method, flotation process work can be completed smoothly, sorting index can be improved, and high-efficiency processing and comprehensive utilization of the type of mineral resource can be realized.

Description

technical field [0001] The invention belongs to the technical field of mineral processing flotation equipment, in particular to an adaptive flotation foam defoaming device and its defoaming method. Background technique [0002] Flotation is one of the most commonly used methods for the separation and enrichment of metallic minerals, non-metallic minerals, and water treatment, especially for the separation of fine-grained and ultra-fine-grained materials. The flotation equipment commonly used in industry mainly includes flotation machines and foam tanks, etc. The foam generated in the flotation process is the carrier of mineral enrichment. The timely scraping, circulation and control of flotation foam are the key to flotation. Flotation The defoaming of foam in the equipment is an important process step for collecting flotation minerals and circulating pulp. [0003] The existing flotation foam defoaming method is to use a simple-designed open tank similar to a rectangular ...

AI Technical Summary

Problems solved by technology

However, when the amount of flotation foam is huge, the foam layer is thick, the foam is thick, the elasticity is good, and the fluidity is poor, it will be difficult to complete the flotation operation of defoaming. The conventional foam defoaming method can no longer work normally, and a large amount of foam accumulates in the foam tank. In the process, the foam cannot be eliminated in time, which will cause the pulp to be unable to circulate and the production process to be difficult to advance

A well-known example is the sulfide-amine flotation of zinc oxide ore. The flotation effect is good, but the amine is extremely sensitive to the slime. The amount of foam in the selection is huge, the viscosity of the foam is excellent, the elasticity is excellent, and the fluidity is poor. In the process including roughing, concentrating and sweeping, the foam is difficult to burst, which makes the production difficult to control. It is more serious in industrial production. It is impossible to produce at all when the processing volume is large

Because the foam cannot be controlled, even if the ore processing capacity is not large, the recovery rate index of industrial production is also very low. This is mainly due to the fact that the foam in the foam tank cannot be treated in time, and the flotation foam cannot be effectively discharged from the foam tank, resulting in The flotation foam stays in the flotation machine tank, and the ore particles attached to the bubbles fall off, resulting in a lower recovery rate

A large amount of zinc oxide ore resources are therefore not well utilized, resulting in a huge waste of resources. The same situation will also occur in the floating andalusite ore, magnesite, fine-grained ore, etc. collected by amine collectors. Selecting homework

[0004] For the conventional foam elimination method, high-pressure water flushing is commonly used, but when dealing with ores such as amine flotation zinc oxide, andalusite, conventional high-pressure water flushing cannot solve the problem, causing the foam to break away from the foam tank and float everywhere in the workshop. normal production

Another method is to use a large amount of defoaming agent to defoam in the conventional foam tank, but the defoaming speed of the defoaming agent is slow, and it is difficult to realize timely defoaming and continuous flotation operations. In addition, adding a defoaming agent will not only increase the economic cost, Moreover, it affects the properties of the flotation pulp and the flotation effect, and at the same time causes environmental pollution.

[0005] Aiming at the technical problem of handling difficult-to-control flotation foam, decades of research have been carried out at home and abroad, but no good progress has been made so far.

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