SU871834A2 - Apparatus for aerosol feeding of flotation agents into pulp - Google Patents

Description

one

The invention relates to the enrichment of minerals, namely, the process of preparing pulp and air mixtures directly from the process, such as flotation, and can be used in the treatment of liquid media or surfaces, such as aqueous solutions and suspensions, with various reagents or surfactants.

According to the main author. St. No. 607601, a device for aerosol supply of flotation reagents, which includes a mixing chamber with grooves, sills with grooves, supplying fl J. nozzles.

However, this device does not provide high-quality mixing of the components.

The aim of the invention is to increase the degree of dispersion and the quality of mixing of the components of the aerosol mixture.

The goal is achieved by the fact that a hyperbolic-shaped metal plate is installed in the mixing chamber, which is cantilever-mounted at the junction of the sub-channel and the mixing chamber, and the length of the -plate is determined by the equation

.e-l-vy,

to

where L is the distance by mezvdu thresholds

feed channel d g diameter of the mixing chamber D - diameter of the feed channel. In addition, the slit grooves on

15, the inner surface of the mixing chamber is spiral wound.

FIG. 1 shows schematically the proposed device; FIG. 2 and 3 are thresholds with longitudinal grooves, in FIG. four -. metal plate.

Claims (2)

The device consists of a mixing chamber 1 with a supply channel 2 inside which are located thresholds 3 with longitudinal grooves 4 on the surface and supplying a reagent (or a mixture of reagents fittings 5. On the inner surface of the mixing chamber 1 spiral slits are made 6 inside the mixing chamber A metal plate 7 is installed, which on one side is rigidly fixed with a screw 8, and the other end is free. The supply of compressed air and reagent into the mixing chamber is carried out respectively via pipelines 9 and 10. Pa The device is placed in a liquid medium or mounted on a pipe section through which the pulp feeds into the enrichment unit, for example, a flotation machine. Compressed air is supplied through line 9 which moves along the inlet channel 2 of the mixing chamber 1 At the same time, through the nozzle 5, a reagent flows in the form of a directional jet, which is supplied via pipeline 10. Thresholds 3 located inside the mixing chamber with grooves 4 on the ThpxiiocTH at the point of entry of the reagent jet are created by current with increased air velocity, which creates the necessary conditions for the displacement of the reactant with air. Blow air, passage through the thresholds 3 to.;: To the 4 kznavkam, is dissected into separate jets, which, mixing with the reagent introduced through fitting 5, fall into the mixing chamber i S and hit the notches 6, which are made in a spiral, and . the reversal of the character of the movement, thereby giving an intense, stable oscillations to the plate with a certain frequency and amplitude, the magnitude of the Yes depends on the intensity of the flow, the geometric dimensions of the device and its nodes. The particles of the reagent, falling on the oscillating plate, are broken up and sprayed onto the finely divided components of the aerosol mixture with a droplet content of less than 4 microns to 80% at the outlet of the chamber. Thus, by installing the plate inside the mixing chamber and changing the geometry of the slit-like rifling, a high quality of displacement of the components of the aerosol mixture is achieved, which is then introduced into the process. Claim 1. Arrangement for aerosol delivery of fpotatsion: reagents in the pulp according to ed. St. No. 607601, characterized in that, in order to increase the dispersion quality and mixing quality of the components of the aerosol mixture, a hyperbolic-shaped metal plate is installed in the mixing chamber, which is fixed at the junction of the feed channel and mixing chamber, and the plate length is determined by eb-V3r, where L is the distance between the thresholds of the feed channel; d is the diameter of the mixing chamber; D is the diameter of the supply pipe. 2. The device according to claim 1, characterized in that the slit-like grooves on the inner surface of the mixing chamber are made in a spiral. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 607601, cl. B 03 D 1/14, 1976 (prototype). tpfa.2 .tpu6.3 at FIG.