Reaction device and method for preparing superfine rare earth compound through same

Abstract

The invention discloses a reaction device and a method for preparing a superfine rare earth compound through the same. The reaction device comprises an end cover (1), at least two feeding pipes (2), a cylinder (3), a discharging port (4) and nozzles (5); the feeding pipes stretch into the cylinder (3), and the nozzles (5) are installed at the tail ends of outlets of all the feeding pipes (2); one end of the cylinder (3) is connected with the end cover (1), the other end of the cylinder (3) is connected with the discharging port (4), and the cylinder (3) is in sealed connection with the end cover (1) and the discharging port (4). According to the method, rare earth feed liquid and a precipitator are pumped into the reaction device through the different feeding pipes (2) respectively to react quickly, and the superfine rare earth compound is obtained. The reaction device is small and simple in structure, convenient to make and use, quite suitable for fluid mixing, dispersion, precipitation reactions and other tests or production and easy to clean, and can be used independently or in a combined mode.

Description

technical field [0001] The invention relates to a reaction device and a method for preparing ultrafine rare earth compounds by using the device, belonging to the technical field of chemical equipment and production. Background technique [0002] In the field of chemical industry, it is often necessary to carry out some reactions such as mixing, dispersion or precipitation. Most of these reactions are carried out in some large or relatively complex equipment, and the purpose of mixing, dispersion or precipitation is achieved by stirring. [0003] At present, a kind of reaction equipment commonly used in chemical production is the reactor, which is widely used in petroleum, chemical, rubber, pesticide, dye, medicine, food and other production users and various scientific research and experimental projects. It is used to complete hydrolysis, neutralization, Containers for processes such as crystallization, distillation, evaporation, storage, hydrogenation, alkylation, polymeriz...

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Problems solved by technology

However, the reactor also has its obvious disadvantages: it is bulky and requires an operating platform for installation and operation. It is time-consuming to install and replace components, and it takes more manpower and time to clean.

The usual preparation method is to precipitate in an enamel reactor, and prevent the particles from agglomerating and growing up by vigorous stirring. However, the sediment stays in the reactor for a long time, and the particles are easy to grow. It is difficult to achieve D50 below 2μm, which cannot be achieved. Ultra-fine powder requirements, and the particle size distribution is not concentrated enough

There are also some special methods such as hydrothermal method or combustion method. These methods have a common feature, that is, special equipment is used, and the process conditions are complicated and difficult to control. Basically, they are all in the laboratory stage. For the realization of industrial production requirements relatively high

The output of the above preparation methods is more or less limited by the capacity of the equipment

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