SU806057A1 - Direct-current settling mixer - Google Patents

Description

HiMcYify.jHbin MIXTURE :: L () STSTP 11 K

one

The invention relates to the design and mass transfer of devices for chemical technology and, in particular, to the design of multi-section box-type, horizontal and 1-pallets mixers for mass transfer in liquid-liquid systems, and can be used in the field of extracting elements such as zirconium, copper, nickel, cobalt, rare earths, where the amount of extractant losses is 70-80% in the cost of redistribution.

The horizontal slider mixer settler for the extraction of non-ferrous and rare metals from ore solutions is known, made in the form of a rectangular chamber divided by vertical partitions into sections of the mixing and settling zones. Mixing zones are equipped with high-speed turbine mixers of the closed type, operating at a peripheral speed of 3-3.5 m / s. HIS chambers are equipped with flaps, making irrevocable movement in the vertical plane with the help of a screw connected to the drive. In order to change the ratio of the phases of the suction. The turbine agitator tube was made in a vertical plane of 1 J.

All stages of the apparatus are hydraulically dependent, as a result of which, the efficiency of the apparatus on different systems does not exceed 80%, the loss of the organic phase is 0.3-0.5 liters per 1 m of the treated solution, the specific productivity of the apparatus is 5-8 m / h

0 s 1 m - volume.

The purpose of the invention is to increase the productivity of the apparatus, as well as to expand the area of the priming of apparatus of the mixer-settler type.

five

This goal is achieved by the fact that, in order to increase productivity by creating in the mixing zone a parallel current of phases, a device for introducing a heavy phase

The device for transferring the mixture of phases from the mixing zone to the sludge zone is designed as a slotted socket, the upper end of which is located at the level of the interface F :.

Claims (2)

FIG. 1 shows the device, 0 one view; in fig. 2 is a section LL in FIG. one; in fig. 3 - section bb in Fig..1. The device consists of a housing 1, divided by partitions 2 into mixing and settling zones, which are equipped with nozzles 3 and 4 for input and output of phases - agitators 5 fixed to the cantilever shaft 6 and rotating from actuator 1., horizontal partitions 8 ,. dividing the mixing chamber 9 into several successive compartments, in each of which the phases are contacted. The selective connection of the compartments brings the phase movement closer to the piston one, reduces the vertical circulation, prevents concentration leveling and increases both the mass transfer rate and the efficiency of the mortar. The device has a slotted socket 10 designed to transfer the mixture of phases from the mixing chamber to the settling zone. phase boundary, pulsation-type pneumatic device 11, used to transport the heavy phase to the settling zone, channel 12 and overflow 13, Fitting 14 and pipe 15. Flow-mixing mixer to work as follows. The easy phase is from section to offset chamber 9 of the next section by gravity flow. The transportation of the yellow phase is carried out by a special pneumatic pulsation-type device. The heavy phase through the pipe 3 through the channel 12, through the overflow 13 enters the receiving chamber of the transporting device 11. After filling the chamber to a level corresponding to the specific weights of the phases and the heights of their layers in the settling zones, compressed air is fed through the fitting 14, squeezing the heavy phase through the pipe 15 to the mixing zone 9. Air supply with its release to determine the filling of the receiving chamber 11 with the hard phase. In the mixing zone 9, the phases are contacted. The movement of the mixture of phases across the compartments of the mixing zone and from the mixing zone to the settling stage occurs both due to the difference in specific weights and due to the small pumping effect of the agitators 5 The magnitude of the Nag is not; the other effect of the Agitators S depends on the distance to the partitions The mixing from the mixers to the partitions should be chosen experimentally, since a change in the inducing action leads to a decrease in the level in the mixing zone. The heavy phase is supplied by a pneumatic pulsation type 11 device to a height of 400,500 mm, and therefore air supplied by the fan can be used for operation. The frequency of the air supply is achieved by the operation of an automatically acting valve or valve. The ratio of the volumes of the mixing and settling zones is changed to 1/2; it is usually equal to || l). A relative increase in the volume of the mixing zone increases the contact time of the phases, which, together with the effect obtained from the implementation of parallel current of the phases, reduces the phase dispersion by reducing the peripheral speed of the mixers from 3 to 1.5-2 m / s. A decrease in the dispersion of the phases allows a decrease in the volume of the settling zone by an amount greater than the increase in the mixing zone 9, and a decrease in the total volume of the apparatus makes it possible to increase the volume from one useful volume to two. times. The level of phase separation in the settling zones 15 depends on the height of the overflow threshold 13. It is possible to lower the height of the overflow threshold by the amount and at the same time compensate for this decrease by additional air pressure. The air pressure in the receiving chamber of the device 11 at the time of filling should then be 4 h. To regulate the level of phase separation in each settling zone, it is enough to change the residual air pressure after its release from devices 11. The proposed device differs from the twice known performance, while the efficiency of extractant with the aqueous phase is reduced by 15%. Claim 1. Pro motorized phase mixer trap with forced transport of heavy phase, including horizontal shell type housing, divided into mixing zones and sludge, mixing device, water for heavy and light phases, and device for transferring a mixture of phases that, in order to increase productivity by creating, in the mixing zone, a parallel current of phases, a device for water of a heavy phase is made in the form of a bowl equipped with a nozzle for introducing compressed air and vertically spaced channels alami hydraulic locks. 2. The mixer-settler according to claim 1,. It is distinguished by the fact that the device for transferring the mixture of phases from the mixture to the sludge zone is made in the form of a slotted socket, the upper end of which is located on the level of the phase boundary. Sources of information taken into account in the examination 1. The author's certificate of the USSR 135220, cl. C 22 V 3/00, 1961 (prototype).