SU420307A1 - CRYSTALIZER - Google Patents

Description

one

The invention relates to the production of salts, metals and organic substances of high purity crystallization.

Limestone mold, consisting of a rotating rotating cooled drum placed in a container with the melt, a heater and a mixing device.

The disadvantage of the known mold is the impossibility of obtaining the desired product with a high degree of purity, since the substance to be cleaned adheres tightly to the drum material, interacts with it and becomes soiled. In addition, using a known crystallizer to purify substances that are prone to supercooling, in the initial crystallization stage, the temperature of the drum surface on which crystallization takes place reaches -40 ° C, which leads to spontaneous non-equilibrium conditions of crystallization of the substance from the melt.

The purpose of the invention is to eliminate these disadvantages. The goal is achieved by reinforcing a perforated cylinder of a material of an inert to crystallisable substance on the drum, in the openings of which the seeds of the substance being crystallized are placed. The perforated cylinder can be made with internal grooves.

The proposed device allows the crystallization of a substance from a container on the same substance, which is constantly maintained in a solid state,

FIG. 1 shows a mold, a general view; in fig. 2 is the same; the section along A-A in FIG. one.

The mold consists of cooled

drum 1, cylinder 2, made of a material that is not wetted by the melt, and holes worn 2 on the drum, holes 2, are made on the surface of the cylinder, in which are placed the seeds of crystallized

venystv. On the inner surface of the cylinder, there are one or more nrotochek 3, in which is placed a strip of crystallized substance.

Crystallized Gaskets

In the night zone, the drum and the cylinder play the role of a heat removal material, which allows the seed material to remain in a solid state in the cylinder openings.

The drum is placed in the container 4, in which the substance is crystallized, and is rotated by the actuator 5.

A heater is provided to flood the crystallized material from the drum.

The flat electromagnetic idus 7 serves to mix the rasilaw.

The mold works as follows. A silt electromagnetic inductor 7 is turned on to stir the molten substance. Using the actuator 5 create the rotation of the drum. The substance that is in the container 4 begins to crystallize on the seeds located in the holes a of the cylinder.

When the crystallized substance approaches the heater b, the latter is turned on, and the crystallized process melts and flows along the tray 8 into the next tank for re-cleaning or is used as ready production. The rotation of the drum leads to a further crystallization of the substance and its reduction in the tank. Therefore, you should either add new portions of the substance to be purified into the container, or unload it with subsequent loading of new substance into the container.

During the crystallization of metals, it is advisable to preserve the outer surface of the drum with a thin layer of crystallizable substance. The applied thin layer of the substance provides the necessary adhesion of the filling substance or the gasket substance to the drum surface.

Subject invention

Claims (2)

1. A crystallizer consisting of a rotating cooled drum placed into the tank with the melt, the heater and the mixing device, characterized in that, in order to obtain the target product of high purity and ensure Under normal conditions of initial crystallization of substances prone to undercooling, a perforated cylinder of a material that is inert to crystallization is strengthened on the drum. The material in the holes of which the seeds of the substance being crystallized are separated. 2. The crystallizer according to claim 1, dated from the fact that the cylinder is supplied from the inside by handles.