SU1694218A1 - Method of material treatment - Google Patents

Abstract

Usage: in the technique of processing materials, for example when dispersing suspensions mainly in the chemical industry. SUMMARY OF THE INVENTION: In the method of processing materials, by treating it with magnetic elements, a stream of processed material is fed under a layer of magnetic elements at an angle of 21-90 ° C. to horizontally camera. The consumption of the material being processed is 0.8–2.5 the consumption corresponding to the maximum active power consumed by the electric winding.

Description

The invention relates to a material handling technique, for example, in the dispersion of suspensions primarily in the chemical industry.

The method of processing materials is known by the action of magnetic elements placed in the chamber in a chamber and moving randomly under the influence of an alternating magnetic field.

The disadvantages of this method are the low quality of material processing in the continuous mode, high energy consumption and low intensity.

This is due to the fact that in the continuous processing mode, the suspensions of a significant part of it slips through the layer or above the layer of magnetic elements, without being subjected to the required degree of processing.

The probability of breakthrough of the untreated suspension decreases with increasing height of the layer of magnetic elements placed in the chamber. However, the height of their layer in the working chamber with the existing method

small, practically can not exceed 20 - 30 cm due to the occurrence of a large moment of resistance to the movement of magnetic elements, due to the force of gravity.

The purpose of the invention is to intensify the process of processing the suspension and improving the quality of the finished product.

This goal is achieved by the fact that according to the method of processing materials by applying magnetic elements placed in the chamber with a layer and randomly moving under the influence of an alternating magnetic field, the flow of the material being processed is fed under the layer of magnetic elements into the chamber located at an angle of 21-90 ° to the horizontal the consumption of the material being processed is equal to 0.8 - 2.5 consumption corresponding to the maximum of the active power consumed by the electric winding.

Example. Conducted processing - dispersion of the pigment paint-and-lacquer suspension composition,%.

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ABOUT

Yu

4 S

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I

Minium iron13,3

Talc8,5

Zinc tetraoxyl chromate8,5

Zinc white7,6

Bentonite 0.5

Varnish FL-032N49,6

White alcohol6

Xylene6

Processing in a chamber of non-magnetic material with an inner diameter of 15 cm and a length of 80 cm.

Granules of barium hexaferrite with Br 1600 Gs were used as magnetic elements. 1Hs 2000E, average size of 0.2 cm, density of 4.8 g / cm.

The amplitude of the magnetic field with a frequency of 50 Hz was chosen as high as possible for the magnetic elements used and was 1600 E.

Magnetic elements were loaded into the chamber in the amount of 18 kg. The camera was placed in an electric inductor consisting of 6 coils 15 cm thick, made of copper wire. An electric current was applied to the inductor at a voltage of 380 V, a frequency of 50 Hz,

The suspension was processed by continuously feeding the suspension under a layer of magnetic elements with a vertical arrangement of the chamber. The height of the layer of magnetic elements in the chamber was 76 cm.

By varying the performance of the slurry pump and following the readings of the wattmeter connected to the electrical winding circuit, the maximum value of the active power consumed from the mains supplying the electrical winding was achieved.

The maximum power value was 4600 W, and the corresponding consumption of the suspension was 160 kg / h. The dispersion of the thus treated suspension, estimated by the wedge method according to GOST 6589-74, was 35 μm, with an initial dispersion of 150 μm. Energy consumption was 28.75 kWh per 1000 kg. With suspension costs 128 kg / h and 400 kg / h.

equal to 0.8 and 2.5 consumption corresponding to the maximum power, the dispersion of the suspension was 50 μm and 70 μm, and the energy consumption of 21.3 kWh and 8.2 kWh per 1000 kg

respectively.

For comparison, the same magnetic elements were used to treat the suspension in a known manner by feeding it through a layer of magnetic elements with a horizontal chamber and a maximum for this method, the height of the layer of magnetic elements is 13.5 cm. At the same time, the total mass of magnetic elements loaded into the chamber, as in the first case was 18kg.

A similar quality of the suspension (dispersion of 35 microns) was obtained with a suspension flow through the chamber equal to 70 kg / h and energy consumption 52 kWh per 1000 kg, dispersion of 50 microns and 70 microns with expenditures of 120 kg / h and 305 kg / h at power consumption of 30 kWh and 11.9 kWh per 1000 kg, respectively.

Thus, the proposed method

processing of materials in comparison with the known method provides the following advantages: 2.2 times intensifies the process of processing and 1.8 times reduces energy consumption. In addition, it improves processing quality with equal performance.

Claims (1)

Invention Formula The method of processing materials by exposing it to magnetic elements placed in a chamber with a layer and randomly moving under the influence of an alternating magnetic field, characterized in that, in order to intensify the process and improve the quality of the finished product, the flow of the material being processed is fed under a layer of magnetic elements angle of 21–9 ° to the horizontal of the chamber, while the consumption of the material being processed is equal to 0.8–2.5 of the flow corresponding to the maximum active power consumed by the coil winding.