SU1510921A1 - Spiral classifier - Google Patents

Abstract

The invention relates to devices for the classification of crushed products and can be used in the beneficiation of minerals, in the metallurgical, chemical and construction industries. The goal is to increase the classification efficiency by preventing the removal of coarse particles from the feed zone to the drain. The classifier includes an inclined trough expanding to the lower part (K) 1 with sides and a drain threshold (P) 2 on the bottom end wall K1, in which spirals 3 are located for transporting sands with a drive and a lifting mechanism. In board K1 at P2, fixture 4 is located for supplying the initial feed. The height P2 decreases from side K1 with device 4 to the opposite side. The material fed to K1 is delaminated into large and small fractions. The coarse material is transported by coils 3 to unloading in the upper part of K1. The small fraction goes into a sink, overflowing through P2. The large height P2 at the side K1 with the device 4 prevents large particles from falling into the drain in the area of the device 4. This makes it possible to obtain a more subtle drain and to increase the classification efficiency. 3 il.

Description

one

(21) 4387400 / 23-03

(22) 01/18/88

(46) 09/30/89. Bul Number 36

(71) North Caucasus Institute of Mining and Metallurgy

(72) A. B. Sysa, A. B. Solodenko and S. I. Evdokimov

(53) 622.752.3 (088.8)

(56) Handbook of ore dressing. Preparatory processes. M .: Nedra, 1982, p. 165.

Egorov VL Fundamentals of ore concentration. M .: Nedra, 1980, p. 64.

(54) SPIRAL CLASSIFIER

(57) The invention relates to devices for the classification of ground products, and may be. used in the enrichment of minerals in the metallurgical, chemical and construction industries. The goal is to increase the efficiency of classification by preventing the removal of coarse particles from the feed zone.

source of food in the drain. The classifier includes an inclined trough (K) I with sides and a drain threshold (P) 2 on the bottom end wall of K I, which has helix 3 for transporting sands with a drive and a lifting mechanism, to the lower part of the trough. In the border K I and P 2 there is a device 4 for supplying the initial power supply. The height P 2 decreases from side K 1 with adaptation 4 to the opposite side. The material fed to K 1 is delaminated into large and small fractions. The coarse material is transported by the coils 3 to the load in the upper part of K 1. The small fraction goes into the drain, overflows through P 2. The large P 2 height at the side of K I with the fixture 4 prevents large particles from falling into the drain in the zone of the fixture 4. This allows Do not get more subtle and improve classification. 3 il.

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The invention relates to devices for the classification of ground products and can be used in the beneficiation of minerals, in the metallurgical, chemical and construction industries.

The purpose of the invention is to increase the efficiency of classification by preventing the removal of coarse particles into the drain from the feed zone.

the high part of the overflow threshold 2 at the bead, where power is supplied, prevents the emission of coarse particles into the drain. By producing a thinner drain, the efficiency of the classifier is improved.

The efficiency of the classification is increased due to the fact that the grains of material that are materialized in the pulp have a size that increases as the depth increases. Therefore, the shape of the drain threshold.

FIG. 1 shows a classifier aligning the thickness of the drain flow over the side view; in fig. 2 is a view A of FIG. 1 (view of the drain thresholds, contributes to the receipt of the drain threshold); in fig. 3 - a more uniform in size drainage, a co-classifier, a view depending on the cost of predominantly thin grains, a discharge threshold, i.e. contributes to the increase of the effective spiral qualifier includes the classification classification, sloping, expanding towards the bottom

Claims (2)

trough 1 with sides and overflow threshold of the invention 2 on the lower end wall, located in the trough 1 of the helix 3 for transporting sands with a drive and lifting mechanism of the spirals, a device 4 for supplying the initial feed located in the bead of the trough at the overflow threshold. In this case, the drain threshold 2 is made with a height decreasing from the bead with a fixture for 20 A spiral classifier that includes an inclined trough expanding to the bottom with sides and a drain threshold on the bottom end wall located in the spiral trough for transporting sands with a drive and a lifting mechanism, located on the side of the source feed trough to the opposite port 25 - to the board board., characterized in that, in order to improve, the device works as follows in addressing the efficiency of the classification due to the risk of preventing the removal of coarse particles in The material fed to the trough 1 is drained from the feed zone of the feed, coalesced into a coarse fraction, the transport threshold is made with decreasing thrung coil 3, and the fine, care is 30 heights from the bead with a flush outlet device. feed feed to the opposite across the overflow threshold 2. At the same time more nomu board. A ad l ada a a / 1 Lou L or 7  V / U 1pU j (Puz.j the high part of the overflow threshold 2 at the bead, where power is supplied, prevents the emission of coarse particles into the drain. By producing a thinner drain, the efficiency of the classifier is improved. The efficiency of the classification is increased due to the fact that the grains of material that are materialized in the pulp have a size that increases with depth. Therefore, the shape of the drain threshold. by aligning the thickness of the discharge stream above the drain thresholds, it helps to obtain a more uniform particle size, consisting mainly of fine grains, i.e. helps to increase effektivnym / 1