SU1679288A1 - Device for determining foaming capability of surfactant slurries and solutions - Google Patents

Abstract

The invention relates to the study of the rheology of colloidal solutions, namely, devices for determining the foaming ability of solutions of surfactants, and can be used in the flotation enrichment of minerals. The purpose of the invention is to improve the accuracy and reliability of the invention. The invention relates to the field of studies of the rheology of colloidal solutions, namely, devices for determining the foaming ability of surfactant solutions, and can be used in the flotation of minerals. The aim of the invention is to improve the accuracy and reliability of the determination of the foaming ability of slurries and surfactant solutions. Figure 1 shows an instrument (sensor) for determining the foaming capacity of slurries and surfactant solutions, a section; 2 of the determination of the foaming ability of slurries and surfactant solutions. For this purpose, in the device for determining the foaming ability of pulps and solutions of surface-active substances, containing an aeration chamber with aerators and nozzles for feeding and draining the solution, a graduated graduated vessel placed horizontally and attached to the upper part of the aeration chamber, a graduated graduated vessel equipped with a longitudinal a vertical symmetrically arranged partition, dividing it into two halves of equal size and configuration, one of which is provided with New vessel walls with a package of vertically arranged plates of a material with a hydrophobic surface, for example, fluoroplastic, while the package of vertically arranged plates is made in the form of discs mounted rotatably and equipped with scrapers tightly pressed to their side surfaces. ly, 3 il. - the same, top view; on fig.Z - section aa in figure 1. The device (sensor) for determining the foaming capacity of slurries and surfactant solutions contains an aeration chamber 1 with nozzles 2 and 3 for supplying and draining the liquid phase of the pulp and surfactant solution, pneumohydraulic aerators 4 and a graduated graduated vessel 5. The engines 6 are used for ease of reading . Placed horizontally and attached to the upper part of the aeration chamber, the 1-dimensional graduated vessel 5 has a longitudinal vertical symmett (L º VI o 00 00 00

Description

a richly arranged partition 7, which divides the graduated graduated vessel 5 into two equally large and configurations of half 8 and 9. Half of the 8 measured vessel 5 is equipped with a package of vertically arranged disks 10 mounted on a common shaft 11 in bearings 12, which are rotated by a drive ( not shown), wherein the disks 10 are directed along the side walls of the measuring vessel 5 and are interconnected with a gap 13. Scrapers 14 are placed in the gaps 13, tightly pressed to the lateral surfaces of the disks 10. Scrapers 14 are interconnected in common it is choked 15 to remove soils fixed to the wall of the measuring vessel 5.

Pneumo-hydraulic aerators 4 are equipped with water supply 16 and air inlet 17 sleeves. A siphon 18 is fixed on the drain pipe 3, which maintains the level of the liquid in the device.

The device (sensor) works as follows.

The gassing chamber 1 is filled with the pulp (surfactant solution) through the nozzle 2, into the Pneumatichydral aerators 4 under constant pressure through the water supply 16 and the air supply 17 sleeves supply water and air with a constant flow rate. Through pipe 3 and siphon 18, the liquid is drained from the aeration chamber 1, ensuring at the same time maintaining a constant level of liquid in the device.

The foam formed during the aeration of the pulp (surfactant solution) is collected in a graduated graduated vessel 5, stretched and pushed to its other end, open for draining, at the same time breaking, the longitudinal partition 7 divides the total foam flow into two equivalent flows, at the same time, each of them moves in its half of the 8 and 9 dimensional graduated vessel 5. The foam flow, moving in half 8, passes through the gaps 13 between the fluoroplastic disks 10. When the foam comes in contact with the hydrophobic surface of the fluoroplastic disks 10

air bubbles coalesce between themselves, which leads to its more rapid destruction and shortening of the path length. When the disks 10 rotate, they remove the contaminants from their surface, ensuring the stability of the properties of the hydrophobic fluoroplastic surface and, consequently, an increase in the accuracy and reliability of reliable measurements. Contaminants from scrapers 14 are removed by heat 15.

The criterion of pulp foaming capacity (surfactant solution) is the difference in the length of foam run before its complete destruction, measured on a horizontal scale with slider 6 in half 9 and 8 of a graduated dimensional vessel 5.

Claims (3)

1. An instrument for determining the foaming capacity of slurries and solutions of surface-active substances (surfactants) containing an aeration chamber with aerators placed inside it, and nozzles for feeding and draining the solution and measuring a graduated vessel placed horizontally and attached to the upper part of the aeration chamber, characterized in that, in order to increase the accuracy and reliability of the determination of foaming the ability of slurries and surfactant solutions, the graduated graduated vessel is provided with a longitudinal vertical symmetrically located partition dividing it into two equivalent in size and half configurations, one of which is provided with a package of vertically arranged plates arranged rotatably along the side walls of the vessel material with a hydrophobic surface, 2. The apparatus according to claim 1, characterized in that the stack of vertically arranged plates is made in the form of discs, equipped with scrapers, tightly pressed to their sides 5 cov surfaces 3. Apparatus according to claim 1, characterized in that the stack of vertically arranged plates is made of fluoroplastic. ten Fig Fig 3