SU1418326A1 - Installation for producing kaolin briquettes - Google Patents

Abstract

The invention relates to the production of kaolin briquettes and can be used in the building materials industry. The aim of the invention is to reduce the energy consumption of the installation. In the plant for the production of kaolin briquettes, in addition to the line for dry enrichment of kaolin, there is a kaolin wet enrichment scheme consisting of an additional metering hopper 12 and successive disintegrator 14 and a wet grinding classifier 17, a kaolin suspension tank 18, which is connected to the humidifier mixer 22 under which the forming press 23 is located, where the briquettes are formed when the rolls of the moistened kaolin are squeezed. 1 il.

Description

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The invention relates to the production of kaolin briquettes and can be used in the building materials industry.

The purpose of the invention is to reduce the energy intensity of the installation.

The drawing shows the installation diagram.

The installation includes a raw kaolin bunker 1 and a dispenser 2 for feeding material into a drying drum 3, a dry type disintegrator A, a pneumatic separator 5, cyclones 6 and a dry kaolin bunker 7. These elements form the technological scheme of dry enrichment of kaolin. Emissions from this circuit are cleaned using cyclones 8, Venturi tubes 9, drip catcher 10, and smoke exhauster 11 connected in series by ducts.

The installation also includes elements that form the kaolin wet beneficiation scheme (before the stage of obtaining the kaolin suspension): bunker 12, dispenser 13 disintegrator 14 of wet type (irrigation with water through a rotating mesh drum), kaolin suspension from which is collected in tank 15, pump 16 pumping kaolin suspension through the wet type classifier 17 (hydrocyclones, for example) into the tank .18 kaolin suspension. Disintegrator 14, classifier 17 and tank 18 are connected by pipelines 19 and 20.

The kaolin dry beneficiation scheme and the elements of the kaolin wet enrichment scheme are connected via a pipeline 21, through which the kaolin suspension is fed to the mixer-humidifier 22, along which is located a forming press 23.

The installation works as follows.

Raw kaolin raw material having a moisture content of 10–20% and containing 40–50% quartz sand, which differs from kaolin with a large grain size, from hopper 1 with dispenser 2 is fed into a drying drum 3 heated by natural gas combustion products. In the drum 3, the raw material is dried to a moisture content of 0.5-1.0% and enters the dry-type disintegrator 4. Under the action of the grinding organ and due to the abrasion, the kaolin fractions disintegrate and are carried away with air along with fine sand in the pneumatic separator

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a rator 5 separating sand from particles smaller than 56 microns. The latter are captured in cyclones 6 and collected in a bunker 7.

The dusty drying agent is cleaned in cyclones 8, the venturi tube 9, the droplet separator 10 and the smoke exhauster 11 is emitted into the atmosphere,

A portion of the raw kaolin raw material is fed through the hopper 12 and the dispenser 13 to the wet-type disintegrator 14. As the mesh drum is irrigated with water, the fractions of kaolin and coarse sand are separated: kaolin with water and fine sand flows into tank 15, and coarse sand is removed from the unit through the end of the drum. Fine sands are then separated from kaolin using a wet type classifier 17, which consists of two successively connected groups of hydrocyclones of different diameters. When the suspension rotates in hydrocyclones, the larger particles are thrown onto the walls and removed through the cyclone's lower body, and the kaolin suspension is discharged through the upper nozzle of the cyclone. In this way, particles larger than 56 microns are removed from the suspension.

The prepared kaolin suspension with a density of 1.15-1.20 kg / dm is collected in tank IB, where it is pumped through pipelines 19 and 20 by pump 16. The next group of pumps 16. delivers the kaolin suspension through conduit 21 to the mixer-humidifier 22. where a uniformly wetted material with a moisture content of 12-14% is prepared. The mixer-humidifier 22 consists of a body., With two rotors having helical blades, and a suspension distributor above them.

The uniformly moistened kaolin is then passed through a forming press 23, where, when squeezed by rolls with lenticular depressions, briquettes are formed with a size of 40-60 mm.

Briquetted kaolin in bulk in gondola cars is sent to consumers.

Claims (1)

Invention Formula A plant for the production of kaolin briquettes, including a bunker-dispenser, a drying drum connected to a dry-type disintegrator, which is via a pneumatic separator. 314183264 cyclone and dry kaolin bunker, consisting of an additional bunker with a humidifier mixer, an idler and a sequentially forming press, characterized by a disintegrator and a classification so that, in order to reduce the wet type torus, the kaolin tank energy intensity of the installation, it is equipped with suspensions, which in turn line, wet enrichment of kaolin, attached to the mixer-humidifier