JPS5937080B2 - Method for producing easily soluble granulated sugar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves continuously granulating powders or crystal grains of sugars such as sucrose, glucose, granules, or mixtures containing these as main components into granules of a certain size. This invention relates to the production of easily soluble granulated sugar.

Conventionally, the production method for easily soluble or immediately soluble granulated sugar involves adding water, sugar solution, solvent binder, etc. to sugars and performing wet granulation, which always involves a drying process, which increases granulation costs. There were drawbacks.

In addition, since the product is porous, each particle has a large surface area and is highly hygroscopic, so particles tend to clump together and have poor fluidity.

The purpose of the present invention is to make it possible to produce granulated sugar by dry granulation without using water or other binders, reduce granulation costs, have high fluidity and storage stability, and destroy crystals. The object of the present invention is to provide a novel method for producing granulated sugar that is highly soluble, has low hygroscopicity, is opaque white, and has an amorphous shape, making it extremely suitable for sprinkling on decorated cakes and the like.

Therefore, according to the present invention, sucrose, glucose, fructose crystal grains or powder, or a mixture thereof, or a mixture containing these as the main ingredient and a small amount of other edible samples is added with water or other binders. It is characterized in that it is pressure-molded to obtain a plate-shaped solid, and this solid is crushed and then sieved to obtain granulated sugar having a desired particle size.

The invention will now be described by way of example.

Example 1 Commercially available granulated sugar is continuously charged at room temperature into a hopper 1 shown in the drawing, pre-compressed by a screw feeder 2 connected to the lower end of the hopper 1, and extruded into a roll press 4 equipped with a pair of rolls 3 and 3'. Compression molding is performed using a roll press using a lever to destroy crystals and press the particles together to form a plate-shaped solid material 5.

then crushed to a particle size of less than 5 m7 IL, for example by a known suitable primary flake crusher 6, 7 comprising one or a cooperating pair of cylinders with a large number of protruding teeth on the outer circumferential surface;
Furthermore, the particles were crushed by a secondary crusher 8 to particles having a maximum diameter of 3 mm or less, and sieved by a screen 9 to particle sizes between 0.5 and 3.0.

Powder of 0.5 mm or less is returned to hopper 1 and reused as raw material.

The dimensions and operating conditions of the press rolls 3, 3' used in this example were as follows.

Press roll dimensions: 160φ x 600 rotations
150rl) In Pressure (linear pressure) 12 tons Processing amount 56 to 9/h As a comparative test, the granulated sugar obtained in this example and
The dissolution time when conventional granulated sugar and powdered sugar are added as samples of 20.9 kg each into 200 cc of water at various temperatures of 5°C, 115°C, and 940°C while stirring at a constant speed is as follows: be.

Example 2 Using the same apparatus as in Example 1, experiments were carried out by changing the rotational speed of the press roll 3°3' and the pressing force.

The results are as follows.

Roll dimensions: 160φX60 (7i→ Number of revolutions: 7.5rpH Pressure crab 9 tons Processing amount: 50kg/h Example 3 Granulated sugar was obtained using the same apparatus as in Example 1 using commercially available powdered sugar as the material.

The operating conditions and results are as follows.

Roll dimensions: 160φ x 606mm Rotation speed: 7.5rl)III Pressurized crab 9 tons Processing amount: 35kg/h

[Brief explanation of drawings]

The drawing is a route map of an apparatus for carrying out the method of the present invention. 1...Hopper, 2...Screw feeder, 3, 3'...Roll, 4...
・Roll press, 6゜7...Primary crusher, 8・
...Secondary coarse crusher, 9...Screen.

Claims (1)

[Claims] 1. Sucrose, glucose, fructose crystal grains or powder, or a mixture thereof, or a mixture containing these as the main ingredient and a small amount of other edible samples is pressure-molded into a plate without adding water or other binders. 1. A method for producing easily soluble granulated sugar, which is characterized in that the solid material is crushed, and then sieved to obtain granulated sugar having a desired particle size.