Concentrate grade adjusting device of drum magnetic separator

Abstract

The invention relates to a concentrate grade adjusting device of a drum magnetic separator, which comprises an ore feeding box of the drum magnetic separator, a separation groove, a permanent magnet separation drum, a concentrate box, a concentrate box ore discharge pipe, a tailing box, a tailing box ore discharge pipe and a control box, and is characterized in that a tailing conveying mechanism consisting of an ore separation pipe and an electric knife gate valve is arranged between the tailing box and the concentrate box, and a concentrate grade detection mechanism consisting of a sampler and an automatic grade instrument is arranged on the concentrate box ore discharge pipe; and the electric knife gate valve and the automatic grade instrument are electrically connected with the controlbox. The device has the advantages that the amount of the tailings fed into the concentrate box is controlled by controlling the opening degree of a valve of an ore distribution pipe of the tailing box, the grade of the concentrate is adjustable, the yield of the concentrate and the recovery rate of iron are increased, economic benefits are improved, the fluidity of slag during ironmaking is improved, and smooth operation of a blast furnace is facilitated.

Description

technical field [0001] The invention belongs to the technical field of magnetic separation equipment in mineral processing plants, and in particular relates to a device for adjusting the concentrate grade of a drum type magnetic separator. Background technique [0002] At present, most iron ore minerals have a certain degree of magnetism, so magnetic separation is the most important beneficiation method for iron ore. Among them, strong magnetic minerals such as magnetite and titanium magnetite are mostly separated by permanent magnetic drum magnetic separators. select. Magnetite has relatively large reserves at present. For a single magnetite, because of its single mineral type, there is a lack of similar mineral types that interfere with magnetic separation, and some magnetite embedded distributions are relatively coarse in particle size, which is an ore that is extremely easy to separate. After this kind of ore achieves monomer dissociation, it is magnetically separated by...

AI Technical Summary

Problems solved by technology

Not only is the procurement of raw materials complicated, but also when mixing ore, it is necessary to set up ore-resident facilities for low-grade ore, feeding and discharging facilities for ore storage facilities, and a mixing yard

The total storage time of general mine facilities and mixing yards generally takes 2-7 days, which will require a large storage space and high infrastructure investment

And the mixing yard also needs to use expensive mixing facilities, such as stackers and reclaimers, and the investment in equipment is also high

All of these greatly increase the investment and operating costs of enterprises

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