RU17917U1 - TECHNOLOGICAL LINE FOR PRODUCING MICROSPHERES - Google Patents

Abstract

1. A production line for producing microspheres, comprising a loading mechanism and a hopper, a feeding conveyor, separation and sorting equipment, receiving containers for microspheres and impurities, characterized in that the separation and sorting equipment includes a washing machine in series with the water clarification tank, a vibration dehydrator , screw feeder with castor, pneumatic classifier, pneumatic cyclone, dust-free cyclone and bag filter, while between the castor and The line is equipped with a Euro-classifier for drying microspheres. 2. The production line of microspheres according to claim 1, characterized in that the installation for drying is made in the form of pipes with a furnace for supplying hot air.

Description

2000120429

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 a with%. , No. | 111f1 | I1gsh 6C04B 5/02 Microsphere production line

The utility model relates to the separation of fine and solid materials by density and specific gravity using methods and equipment for pneumoclassification, cyclonation and can be used to process the ash and slag mixture formed during the combustion of coal in the furnaces of thermal power plants in order to obtain marketable products in the form of a homogeneous mass microspheres.

A known installation for separating materials by density for use in thermal power plants for

separation of hollow microspheres from ash and slag pulp 1. A disadvantage of the known installation is that it is intended only for the selection and accumulation of microspheres together with ash and slurry impurities and moisture.

The closest in technical essence and the achieved result is a line for producing metal-containing granules 2, including a loading hopper, a feed conveyor, a number of crushing and screening equipment, receiving bins for finished products and by-products.

The known line is designed for the processing of sintered materials such as metallurgical slag with a wide range of fractional composition of the constituent components. Therefore, the separation functions into individual types of material during the processing of metallurgical slag are performed by crushing plants, screens, high-power electromagnetic separators with mechanical stress, leading to the destruction of the material and a change in the shape and size of the fractions of the final product. A disadvantage of the known line is that at high energy costs it does not provide high-quality products in the processing of materials in the form of a homogeneous small fractional composition while maintaining the original geometric shape of the emitted component.

In this application, the task is set, while maintaining the basic principles of the technological process of processing materials on a known line, to ensure the production of high-quality products from materials that do not allow mechanical destruction during the separation of its components, for example, in the processing of ash residues containing vitreous microspheres to clean them from impurities.

are solved and solved by the fact that in a known line containing a loading mechanism and a hopper, a feeding conveyor, receiving containers of the finished product, separation and sorting equipment includes a washing machine in series, connected to a water clarification tank, a vibration dehydrator, a screw feeder with a spreader, a pneumatic classifier, a pneumatic cyclone, a dust-free cyclone and a bag filter, while the line between the castor and the pneumatic classifier is equipped with an installation for a host of microspheres and ash impurities. The installation for Sushka can be made in the form of a system of pipes with a furnace for supplying microspheres and impurities of hot air to the flow of motion.

The proposed production line, layout and use of functional equipment in the declared sequence ensure the achievement of the task, significantly reducing energy consumption, simplifying preventive maintenance and operation of the line. The separation of the processed material into the final product is carried out at plants without mechanical destruction of the initial form and resizing of the main emitted component - microspheres.

The proposed production line contains a set of new essential features characterizing the device, namely the presence of the type of equipment and its relative position in the technological line, which meets the criterion of Novelty.

From scientific, technical and patent information, the use of a combination of the arrangement order of equipment for its functional interaction to achieve the task, which meets the criterion of non-obviousness, was not revealed.

The figure shows a General view of the layout of the equipment of the technological line for producing microspheres.

 The line contains a loading mechanism 1, a hopper for source material 2, a feeding conveyor 3, a washing unit 4, a clarification tank 5, a vibratory dehydrator b, a screw feeder 7 with a spreader 8, a drying unit 9 with a furnace 10 for supplying hot air, a pneumatic classifier 11, pneumatic cyclone 12, a container for collecting cleaned microspheres 13, a dedusting cyclone 14, a bag filter 15, a container for collecting ash impurities 16 and a pipe for discharging purified air 17.

The line works as follows. The feedstock (a mixture of microspheres with ash impurities) by a loading mechanism (for example, a crane-beam) 1 is fed to the receiving hopper 2. The raw material mixture is fed by a screw conveyor 3 to a washing unit 4, where the microspheres are separated by intensive boiling, washed from ash impurities that are not slagged from the surface of the microspheres . Water emulsion with

with ash impurities settles to the bottom and is fed through a pipeline system to a tank 5 for purifying water from ash impurities and then again enters the washing unit. Microspheres and ash particles remaining on the surface of the microspheres are fed to a vibration dehydrator b, where, along with moisture, impurities are separated from the surface of the spheres.

Spheres cleaned of impurities enter through the screw feeder 7 into the casting device 8, after which the predominant separation of impurity particles from the surface of the spheres occurs. In the drying unit 9, the air flow from microspheres and pure impurities, which is heated in the furnace 10, completely removes moisture. The hot dry mixture enters the pneumatic classifier 11 and then into the pneumatic cyclone 12, after which the final separation of the microsphere from the dispersed particles of the ash impurity occurs. The cleaned microspheres enter the receiving drive - tank 13, and the air stream from the pneumatic cyclone enters the dedusting cyclone 14 and then into the bag filter 15 for final cleaning of air from dust to sanitary standards, which through the outlet pipe 17 enters the atmosphere, and small particles of impurities and dust settles in closed containers 16.

Execution Example:

The experimental line processed 20 tons of feedstock: wet microspheres clogged with ash. Ratio: microspheres - 85%, ash - 15%. Humidity of the mixture is 15-50%.

The technology for producing commodity microspheres includes the steps of: loading raw materials; purification of raw materials from impurities; dehydration and drying; classification of finished products; packing.

The characteristic of the finished product is microspheres.

Bulk weight 0.3-0.6 g / cm

Density 0.5-5-0.7 g / cm

Fineness Oh, 01mm

Thermal conductivity 0, 01 W / mK

The chemical composition of the microspheres (wt.%):

3102 50-60; A120z 25-35; Ge20s 3-8; CaO 1-5; MdO 0.51.5;

Na20 0.3-1.5; K20 0.2-0.3.

Microspheres are sent to the consumer for use as a filler in plastics, for the production of paints. Used sources :

Claims (2)

1. A production line for producing microspheres, comprising a loading mechanism and a hopper, a feeding conveyor, separation and sorting equipment, receiving containers for microspheres and impurities, characterized in that the separation and sorting equipment includes a washing machine in series with the water clarification tank, a vibration dehydrator , screw feeder with castor, pneumatic classifier, pneumatic cyclone, dust-free cyclone and bag filter, while between the castor and The Euro classifier is equipped with a line for drying microspheres. 2. The production line of microspheres according to claim 1, characterized in that the installation for drying is made in the form of pipes with a furnace for supplying hot air.