UA73857C2 - Hydrocyclone - Google Patents

Abstract

A hydrocyclone which includes a main body having a chamber therein, the chamber including an inlet section, and a separating section, the separating section having an inner side wall which tapers inwardly away from the inlet section, the hydrocyclone further including a feed inlet feeding a particlebearing slurry mixture into the inlet section of the chamber, an overflow outlet at one end of the chamber adjacent the inlet section thereof, and an underflow outlet at the other end of the chamber remote from the inlet section of the chamber. The hydrocyclone further includes an overflow outlet control chamber adjacent the inlet section of the chamber of the hydrocyclone and in communication therewith via the overflow outlet, the overflow outlet control chamber including a tangentially located discharge outlet and a centrally located air core stabilizing orifice which is remote from the overflow outlet.

Description

the inner side wall, which tapers inwards in a cone-like manner away from the entrance section. The hydrocyclone additionally includes an inlet channel for the starting material, which ensures the supply of the mixture in the form of suspension, carrier particle, into the inlet section of the chamber, an outlet channel for the upper product located at one end of the chamber adjacent to its inlet section, and an outlet channel for the lower product at the other end of the chamber remote from the entrance section of the chamber. The hydrocyclone further includes an overhead control chamber which is located adjacent to the inlet section of the hydrocyclone chamber and which communicates therewith via an overhead outlet. The top product outlet control chamber has a tangential outlet outlet and a centrally located hole to stabilize the center of the air column, which is remote from the top product outlet.

A preferred opening designed to provide stability, the outlet channel for the upper product and the outlet channel for the lower product are substantially coaxial in the axial direction.

In one preferred embodiment, the overhead control chamber has an inner surface that is substantially in the form of a spiral coil designed to direct material entering the overhead control chamber from the separation chamber toward the exit channel for discharge. Mostly, the spiral curl runs along the inner surface at an angle of up to 360".

In a preferred embodiment of the invention, the inlet section of the chamber has an inner surface that essentially has the shape of a spiral curl, and preferably the spiral curl is made with an inclination in the axial direction towards the end of the separation chamber, which narrows and passes along the inner surface at an angle of up to 360".

The hydrocyclone may additionally include a device for detecting a vortex near the exit channel of the separation chamber intended for the upper product.

In one preferred embodiment of the invention, the hole designed to provide stability has sidewalls that taper into a control chamber. Preferably, the opening has a substantially conical inlet.

According to another aspect of the present invention, there is provided a control device used in conjunction with a hydrocyclone, wherein the hydrocyclone comprises a main body with a chamber formed therein, the chamber having an inlet section and a partition section, the partition section having an inner side wall that tapers inwards in side of the inlet section, the hydrocyclone having a feed inlet channel for feeding the feed mixture into the chamber inlet section, an overhead product outlet located at one end of the chamber adjacent to the inlet section, and a bottom product outlet at the other end camera remote from the input section of the camera. The control device includes a control chamber having an output channel for release, a communication port operatively connected to the output channel for the top product, and an opening designed to provide stability that is remote from the output channel for the top product.

In a preferred embodiment, the control camera can be made in the form described earlier.

In addition, the hydrocyclone can be a hydrocyclone of the previously described type.

According to another aspect of the present invention, a method of ensuring the stability of the center of the air column of a hydrocyclone during its use is provided, which includes the operations of providing a chamber above the outlet channel of the hydrocyclone, and intended for the upper product, to be released from the chamber through the outlet channel for release, and making an opening intended for to ensure the stability of the center of the air column, in the wall of the chamber, remote from the outlet channel for the upper product.

It was found that a design similar to the one described above, in its preferred version, provides a stable flow of material released from the cyclone, minimization of any back pressure acting on the process in the cyclone system, and the maximum possible increase in the cross-sectional area of the axial center of the column of air formed inside the cyclone, maximizing throughput in terms of product output, expressed for example in tons per hour, and maintaining the separation process in the cyclone at a stable level.

The control of the hydrocyclone can be carried out in such a way as to ensure that it operates in a steady state and to reduce the tendency for the discharged material to form a rope flow near the outlet of the bottom product. Inlet airflow control can be used to influence formation, maximize cross-sectional area, and stabilize the center of the cyclone air column. Additionally, the hole designed to stabilize the center of the air column creates a potential opportunity to observe the inner workings of the hydrocyclone to provide more advanced process control as the hydrocyclone's technical means evolve.

Preferred embodiments of the invention will be described below with reference to the accompanying drawings, in which:

Figure 1 shows a schematic partial section of a hydrocyclone according to the present invention;

Figure 2 shows a plan view of the hydrocyclone shown in Figure 1; and

Figure 3 shows a schematic side vertical section showing some of the main dimensions.

The drawings show a hydrocyclone, designated generally by the reference number 10, which includes a main body 12 with a chamber 13 formed therein, while the chamber 13 has an inlet section 14 and a conical partition section 15. The hydrocyclone additionally includes an inlet channel 17 for the source material, which ensures the supply mixture in the form of a suspension, a carrier particle, into the input section 14 of the camera. An outlet channel for the upper product, or vortex detection device 27, is provided at one end of the chamber adjacent to its inlet section, and an outlet channel 13 for the lower product is provided at the other end of the chamber remote from the inlet section of the chamber. The hydrocyclone additionally includes a control device 20 having an overhead product output control chamber 21 which is located next to the inlet section of the hydrocyclone chamber and which communicates with it via an overhead product outlet. The top product outlet control chamber has a tangential outlet outlet 22 for release and a centrally located opening 25 to stabilize the center of the air column, which is remote from the top product outlet. The hole designed to provide stability, the output channel for the upper product and the output channel for the lower product are essentially located coaxially in the axial direction.

The top product output control chamber 21 has an inner surface that is essentially in the form of a spiral curl designed to direct the material entering the top product output control chamber from the separation chamber towards the exit channel for discharge. Mostly, the spiral curl runs along the inner surface at an angle of up to 360".

The inlet section 14 of the chamber 13 of the hydrocyclone has an inner surface that essentially has the shape of a spiral curl, and preferably the spiral curl is made with an inclination in the axial direction towards the end of the separation chamber, which narrows and passes along the inner surface at an angle of up to 360".

The stability opening 25 has sidewalls that taper into the control chamber and which, as shown, form an essentially conical inlet.

The control device 20 can be made integral with the hydrocyclone or separately from it, so that the possibility of upgrading existing hydrocyclones is ensured by installing this device.

Figure 33 shows some hydrocyclone dimensions that may affect its operation. They are defined as follows:

O) - the diameter of the input channel for the source material; bo - the diameter of the output channel for the bottom product; bo - the diameter of the outlet channel for the upper product;

Ov - the diameter of the hole designed to ensure stability;

Axis « diameter of the inlet section of the hydrocyclone chamber;

Its x is the overall length of the hydrocyclone.

Examples of preferred ratios of these dimensions are given below. 0.-0.20-0.34Os

Bo-0.20-0.450s ry-0.30-0.750o0

And 1-3.0-8.0Os

О5-0.0-1.00О0

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