SU1710147A1 - Method of air dry separation of materials - Google Patents

Abstract

The invention relates to enrichment (materials and mb. Used in mining, construction, and other types of industry. {Invention - improving the efficiency and quality of aggregate enrichment for concrete-mortar mixtures by optimizing dynamic and thermal effect on the material. For this, the processed material enters the accelerating pipe 4. where it is picked up by dry heated air flow and at a speed of 60-100 m / s enters the horizontal movable chamber 5. In the chamber, the material is irradiated about 50-100 ° C and strikes against the fencing shield 7. This creates horizontal impact-a-directional force effects on the material, which are combined with horizontal vibration effects from the vibrator 8 with directional frequency of 20-25 Hz and amplitude 5 -10 mm As a result of shock and vibration effects, the material is enriched 1 or 3 fJcnupauitOHffufo sys / pemus? Ё7 841О! ^ Vi

Description

The invention relates to the enrichment of materials and may find wide practical application in the building materials industry, the mining industry and other sectors of the national economy.

The aim of the invention is to increase the efficiency and quality of enrichment of aggregates for concrete-mortar mixtures by optimizing the modes of dynamic and thermal effects on the material.

The drawing shows the installation of dynamic air-dry enrichment, with which the proposed method is carried out.

The installation consists of a charging nozzle 1, a high pressure fan 2, heaters 3 ,. installed in the shock tube 4. The impact tube 4 enters a horizontally movable chamber 5, inside which are installed sources 1 of radiant anergy, and on its end is a folding plate type 7. A vibrator 8 of directional action is placed on the outer side of the baffle plate. In the lower part of the horizontally movable chamber 5, a sieve 9 is installed with a discharge outlet 10 and a hopper 11. The installation is equipped with a low pressure fan 12, which is connected to the discharge outlet 10 by a pipe 13, as well as shock absorbers 14.

Installation of dynamic air-dry enrichment works as follows.

Example 1. The material is fed to the loading nozzle 1, from where, under the action of a dry heat air flow created by the high pressure fan 2 and the heaters 3, the accelerating pipe 4 with a speed of mainly 60-100 m / s enters the horizontal movable chamber 5, irradiated by heaters 6, strikes against the fender shield 7, which creates shock horizontal-directed force effects on it, which are combined with horizontally-vibration effects from the vibrator 8 of the directional action, and also exposed to heat flow at a temperature of, for example, 50-100 ° C. Purified by shock and vibration, the material through a sieve 9 enters the discharge nozzle 10, and the uncleaned coarse grains are sent to the hopper 11. The dust particles are removed using a low pressure dust fan 12, a pipe 13 and an aspiration system. Reducing dynamic installation loads

is carried out by introducing shock absorbers into its structure. 14..

If necessary, the technological cycle is repeated.

EXAMPLE 2: The material enters into the free volume between the markers and the horizontally vibrating baffle plate in batches, hits the baffle plate and is cleaned. Purified material through a sieve and discharge pipe comes to the consumer, and large grains - in the bunker and waste.

The mode of horizontal directional force is determined by the speed), the heat airflow of air equal to 60-100 m / s in the accelerating pipe 4 created by the high pressure fan 2 and the heaters 3, and is caused by the destruction of conglomerates and weak grains of materials, and also cleaning the surface from shocks. According to experimental data, the rate of destruction of conglomerates and weak grains of rubble is 60 m / s, and for sands it is -100 m / s.

The generated temperature regimes of the field of radiant energy in the range of 50100 ° C from heaters 3 and 6 are caused by the need to dry the enriched materials supplied with a moisture content of 6-10% to the required parameters. For rubble, this is 50 ° C, and for fishing line - 100 ° C. In addition, the thermal field allows to increase the speed of movement of grains and particles by 10-15%.

Creating counter shock vibration impacts from a directional vibrator with an oscillation frequency of 20-25 Hz and an amplitude of 5-10 mm makes it possible to increase the magnitude of the shock impulse to the particles and grains of the material by 30-50%, which increases the intensification of material cleaning and removes the purified material from the fender for further classification.

Claims (1)

Invention Formula The method of air-dry enrichment of materials, including acceleration of the material by the heated flow in the horizontal direction, a counter-shock-vibration effect on the accelerated flow, which is characterized by the fact that, in order to increase the efficiency and quality of the enrichment of aggregates for concrete-mortar mixtures, thermal effect on the material, in the zone of oncoming shock-vibration effect, the material is exposed to a heat flow with a temperature of 50-100 ° C, while the impact is 517101476 The vibration impact is carried out with the material accelerated by an air stream to a frequency of 20-25 Hz and an amplitude of 5-10 mm, and a speed of 60-100 m / s.