RU1789278C - Pulp conditioning apparatus - Google Patents

Abstract

The invention relates to mineral processing. The goal is to increase the effectiveness of conditioning pulp due to its greater uniformity. The pulp conditioning apparatus consists of a housing 1 divided by an overflow partition (P) 2 into a pulp receiving chamber (K) 3 into which a pipe 5 for introducing the pulp is inserted, K 4 for processing the pulp with a pipe 6 for outputting the pulp. Inside K 4 in its upper part there are inclined trays (L) 9 displaced relative to each other in length and height K 4, in which slot-holes -5 Lr 10 are made over the entire width of K 4. The ratio of the areas in adjacent P 9 is determined by the expression Si / Si + i / (Ni) / (Ni +1), where i is the serial number Л 9 from П 2, N is the number Л 9 in the device. Under Л 9 there are guides Л 11 directed to the top of the dihedral corner 7 closest to them. The upper edges of L 11 are aligned with the edges of the holes 10 farthest from P 2. Under L 9, inclined plates 12 are located on the end walls of K 4. At nozzles 7 there are nozzles 8 for supplying flotation reagents in the form of aerosols at the walls of housing 1. The pulp through pipe 5 enters K 3, from where it flows through P 2 to K 4, where it enters L 9, closest to P 2. Moving along L 9, part of the pulp falls into hole 10, and the rest goes to the next L 9. The failed pulp flows L 11 and plates 12 are directed to the corners 7, where they are divided in half. The divided jets of pulp upon impact with the underlying corners 7 are again divided in half. Air flows with aerosol of flotation reagents from nozzle 8 move upward, repeatedly penetrating the falling pulp flows. The treated pulp is removed through a nozzle 6. 2 sludge. Yu 1el XI 00 Yu to VJ from 5

Description

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The invention relates to the field of mineral processing by flotation, in particular, to devices for preparing pulp for it, and can be used in the processing of ore or non-metallic raw materials.

The aim of the invention is to improve the conditioning of the pulp due to its greater uniformity,

Figure 1 shows a front section of a pulp conditioning apparatus; figure 2 is a section aa in figure 1.

The pulp conditioning apparatus consists of a housing 1 divided by a partition 2 into a pulp receiving chamber 3 and a pulp processing chamber 4. A nozzle 5 for introducing the pulp is placed in the pulp receiving chamber 3. A pipe 6 is connected to the bottom of the processing chamber 4 to discharge the pulp. Dihedral angles 7 are installed above the nozzle 6 over the entire width of the treatment chamber 4, with a pneumatic nozzle 8 underneath on the side walls of the housing 1 for introducing flotation reagents in the form of aerosols.

In the upper part of the processing chamber 4 over dihedral corners 7 with inclined trays 9 displaced with respect to each other in height and length of the processing chamber 4 over its entire width, the upper edge of the inclined tray 9 closest to it is aligned with the upper end of the overflow partition 2. In inclined trays 9 along the entire width of the processing chamber 4, slotted holes 10 are made, the ratio of the areas of slotted holes 10 made in adjacent inclined trays 9 is determined by the expression

Si / Si + i ((N-1) / (N-1 + 1}) 1 / 2- where i is the serial number of the inclined tray 9 from the overflow partition 2;

N is the number of inclined trays 9 in the apparatus;

Si and Si-m - the area of the slotted holes 10.

Under the inclined trays 9 along the entire width of the processing chamber 4 there are guide trays 11 directed to the top of the dihedral corner 7 nearest to them, while the upper edges of the guides

Claims (1)

SUMMARY OF THE INVENTION A pulp conditioning apparatus comprising a casing separated by an overflow recycle into a receiving chamber with a pulp inlet and a treatment chamber with a pulp outing pipe, the height of which inclined trays are installed in series, the inclined plastic trays 11 are aligned with the edges distant from the overflow partition 2 mi of slotted holes 10. The inclined plates 12 are attached to the end walls of the processing chamber 4 below the inclined trays 9. The pulp conditioning apparatus operates as follows. The feed pulp is introduced through the nozzle 5 into the receiving chamber 3, where the flow rate of the pulp is quenched. From the chamber 3, the pulp, overflowing over the edge of the overflow partition 2, enters the first of the inclined trays 9. When passing through it, part of the pulp falls into the slot 10 and the rest goes to the next inclined tray 9, where one part of the pulp again falls into the slit hole 10, and the other enters the next inclined tray 9. The pulp flows that have fallen into the slit holes 10, the guide trays 11 are directed to the tops of the dihedral corners 7, where they are divided into two parts, each of which goes to the inclined th plate 12 or dihedral angle 7 below. Air streams saturated with the aerosol of flotation reagents coming from nozzles 8 repeatedly pass through the falling pulp flows, as a result of which the pulp is processed. Exhaust air flows rise to the top of the treatment chamber 4, from where they are diverted to the bottom of the treatment chamber 4 or to the flotation machine. The pulp treated with flotation reagents accumulates in the lower part of the treatment chamber 4, from where it is flotated through a pipe 6. An increase in the area of the slit openings 10 on each subsequent from the overflow partition 2 inclined tray 9, in comparison with the previous one, allows to provide an equal amount of pulp in the flows falling into these openings 10 on different trays 9, which contributes to a more uniform processing of the pulp. The dihedral angles placed on the side walls of the nozzle body for introducing flotation reagents in the form of aerosols, characterized in that, in order to improve the conditioning of the pulp, the apparatus is equipped with guide trays located under the inclined trays, in inclined trays along the entire width of the processing chamber slotted openings, the area ratios of which in adjacent inclined trays are determined by the expression Si / SI + 1 ((N-i) / (N-i + 1)) 1/2, where i is the serial number of the inclined tray from the overflow partition; N is the number of inclined trays in the apparatus; Si and Si + 1 are the areas of the slit openings, while the upper edges of the guide trays are aligned with the edges of the slit holes farthest from the overflow partition, and the inclined trays are offset relative to each other in height and length of the processing chamber. FIG. 2