SU1362494A1 - Plate granulator - Google Patents

Abstract

The invention relates to the field of granulating materials and can be used in the chemical industry in the production of fertilizers and allows to improve the quality of the product. The profile of knives 3 and 4 consists of two parts, having an upper and lower part ratio of 0.93-1.1, while the upper part of the upper knife 3 is made curved in the direction of movement of the granules with a radius of curvature of 0.28-0.33 of the radius of the plate 1 , the lower part of the lower knife 4 is made curved in the direction of movement of the granules with a radius of curvature of 1.1 -1.2 of the radius of the plate 1. 1 sludge, 1 tbl. (L with O5 N2 CO N

Description

The invention relates to granulating and pelletizing bulk materials and can be used in the chemical, cement, food, metallurgical and other industries.

The goal of avoidance is to improve the granulating conditions and improve the quality of the product.

The drawing shows the layout of the knives in the proposed device.

The laboratory sample of the device has the following dimensions: the plate diameter is 400 mm, the bead height is 80 mm, the plate angle is 50 °, the number of knives is one in the upper left and lower left parts of the granulator plate. Knife sizes: the ratio of the upper and lower parts of the upper and lower knives is 1: 1. The length of the upper knife is 120 mm and the radius of curvature of the upper part of the knife is 60 mm. Lower edge bevel 30 °. The length of the pan granulator contains on the bottom knife 150 mm and the radius of curvature of the clone plate 1, the holder 2 of the blades 3 and 4, the bottom of 230 mm, the bevel of the lower edge 30 °.

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installed in the direction of movement of the granules and consisting of two parts, having the ratio of the lengths of the upper and lower parts of 0.93-1.1, while the upper knife 3 4 g is located in the upper left quarter of the plate while rotating it counterclockwise, and the lower knife 4 is located in the lower left quarter of the plate. The upper part of the upper 3 is made curved in the direction of movement of the granules and has a radius of curvature of 0.28-0.33 of the radius of the plate, and the lower part of the upper knife 3 is straight. The lower part of the lower knife is made curved in the direction of movement of the granules and has a radius of curvature of 1.1 -1.2 of the radius of the plate.

Pellet torus works as follows.

The plate 1 of the granulator is turned counterclockwise and turns 25

The knives are installed parallel to the direction of movement of the material during trial starts on a model polydisperse product. Experiments on the granulation of a defluorinated phosphate were carried out with the following parameters of the granulator: plate rotation speed of 25 rpm; granulation time 6-7 minutes; moisture content of 10%.

The test results are summarized in table.

The granules in the wet and dried state (drying time 60 min at 110 ° C) are tested for strength with an IPG-1 extrosometer.

Claims (1)

Invention Formula A plate granulator containing an inclined plate equipped with a rotation drive, upper and lower knives, installed by a house (not shown). On the plate 1, eaten in the plate at acute angles, the source material is fed with a given vertical diametral plane, flow rate. With the rotation of the plate 1, the upper knife for cleaning the bead and the bottom of the plate is located in the upper left quarter of the plate, while rotating it counterclockwise, and the lower knife for This material is driven by centrifugal and Coriolis forces, friction and weight, distributed across the bottom of the plate 1 with a simultaneous classification by croup-cs cleaning the bottom of the plate located in the left t and.1 nosti. Intensive growth of pellets occurs on the right side of the plate 1, and the material adhering to the bottom and its small fractions get to the left. Poured on the plate 1 and the adjacent ring part the bottom quarter of the plate, the knives are made with straight lines, characterized in that, in order to improve the quality of the product, the upper part of the upper knife is made curved in the direction of movement the bottom of the material is cleaned by the top 40 granules and has a radius of curvature of 0.28; beater 3, which is located in the upper 0.33 radius of the plate, and the lower part of the lower knife is curved in the direction of the granules and has a radius of curvature of 1.1 -1, 2 radius of the plate, and left quarter of the cage 1. The central uncleaned part of the bottom cleans the lower knife 4. Unloading the granulated product is carried out through the side of the container with the ratio of the lengths of the lower and upper hours whether 1. Each knife is 0.93-1.1. The laboratory sample of the device has the following dimensions: the plate diameter is 400 mm, the bead height is 80 mm, the plate angle is 50 °, the number of knives is one in the upper left and lower left parts of the granulator plate. Knife sizes: the ratio of the upper and lower parts of the upper and lower knives is 1: 1. The length of the upper knife is 120 mm and the radius of curvature of the upper part of the knife is 60 mm. Lower edge bevel 30 °. The length of the lower knife is 150 mm and the radius of curvature of the lower part is 230 mm, the lower edge bevel is 30 °. The knives are installed parallel to the direction of movement of the material during trial starts on a model polydisperse product. Experiments on the granulation of a defluorinated phosphate were carried out with the following parameters of the granulator: plate rotation speed of 25 rpm; granulation time 6-7 minutes; moisture content of 10%. The test results are summarized in table. The granules in the wet and dried state (drying time 60 min at 110 ° C) are tested for strength with an IPG-1 extrosometer. Invention Formula the ratio of the lengths of the lower and upper hours Each knife is 0.93-1.1.