SU1537321A1 - Method of separating lump materials - Google Patents

Abstract

The invention relates to a dressing technology, is intended to separate lump materials from chips, and can be used in secondary non-ferrous metallurgy in preparatory processes for chips to be smelted. The purpose of the invention is to increase the degree of purification of bulk materials from chips. The starting material is fed and divided according to its elasticity on a rotating drum. As a result of hitting the drum, each piece and particles of the material acquire a certain speed and move along different trajectories. The flight path of the pieces passes above the flight path of the chip particles. To increase the difference between the flight paths of the particles of the pieces and chips, the material is affected by a vertical air flow, directed from top to bottom, at a speed of 5–7 m / s. The separated fractions of the output t.

Description

The invention relates to a dressing technology, in particular to methods for separating bulk materials from chips, and can be used in secondary non-ferrous metallurgy during preparatory processes for chips for smelting.

The purpose of the invention is to increase the degree of purification of bulk materials from chips.

The method for isolating bulk materials is carried out as follows.

The raw material is fed and divided by elasticity on a rotating drum. Then the material is affected by vertical air flow, directed from top to bottom, at a speed of 5-7 m / s. The separated fractions of the output t.

Example. 10 kg of a mixture containing 5 kg of loose aluminum chips of a fraction of + 3 ...- 50 mm and 5 kg of lump materials (pieces of aluminum and aluminum alloys) of a fraction of +15 ...- 50 mm are loaded into a receiving bin, from where it comes to vibratory flow, create a stream of particles, which at the beginning of the exit from the vibrating flow has a curvilinear trajectory, but then under the action of gravitational forces - a vertical trajectory. A stream of particles is directed to a rotating drum. As a result of hitting the bardbun, each piece and the particles acquire a certain speed and move along different trajectories, with the flight path of the pieces passing above the flight path of the chip particles. To increase the difference between the flight paths of the particles of the pieces and the chips, the particles are affected by vertical air flow, directed from top to bottom, at a speed of 6 m / s. Due to the fact that the specific dynamic resistance per unit volume of the chip is an order of magnitude higher than that of the pieces, the difference in the flight paths of the particles of the pieces and the chips increases even more. The separated fractions are removed from the process. 4.84 kg of chips, clogged 0.215 kg of pieces (contamination 4.25%), and 4.945 kg, clogged 0.16 kg of chips (contamination 3.2%) are obtained.

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Claims (1)

The invention claims for increasing the degree of purification of bulk materials from chips, after separation by The method of separating bulk materials from the elasticity of the source material to the inclusive feed and separation along an elongated drum on the material from the impact of the source material on a rotating air flow, with a drum and the output of divided tail-5 from top to bottom with speed This is characterized in that, with a target of 5-7 m / s.