Chemical device and method for preparing ultra-fine rare earth compound through device

A technology of rare earth compounds and chemical industry, applied in the direction of rare earth metal compounds, chemical instruments and methods, rare earth metal oxides/hydroxides, etc. Problems such as growing up, to achieve the effect of simple structure, convenient use, and reduced reunion

Inactive Publication Date: 2017-02-22
QIANDONG RARE EARTH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the process of preparing ultrafine powder by reactor precipitation method, due to the large volume of the reactor, the stirring speed is low (generally tens to more than 100 revolutions per minute), and it is uneven; and the total time of precipitation is long, and the pre

Method used

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  • Chemical device and method for preparing ultra-fine rare earth compound through device
  • Chemical device and method for preparing ultra-fine rare earth compound through device

Examples

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Example Embodiment

[0031] Example 1

[0032] As attached figure 1 As shown, a chemical plant of the present invention includes a feeding unit 1 and a stirring unit 2. The stirring unit 2 is a closed cavity with an inlet 5 and an outlet 6 in the structure of a centrifugal pump. The cavity is driven by an external motor 8 Stirring impeller 7; the feeding unit 1 is tubular, one end is the feeding end, and the other end is flanged to the inlet 5 of the stirring unit 2. The feeding end of the feeding unit 1 has two feeding ports 3; the end of each feeding port 3 is equipped with a nozzle 4, and the nozzle 4 is spiral-shaped and threaded.

Example Embodiment

[0033] Example 2

[0034] As attached figure 1 As shown, another chemical plant of the present invention includes a feeding unit 1 and a stirring unit 2. The stirring unit 2 is a closed cavity with an inlet 5 and an outlet 6 in the structure of a mortar pump. The cavity is driven by an external motor 8 The stirring impeller 7; the feeding unit 1 is tubular, one end is the feeding end, and the other end is connected to the inlet 5 of the stirring unit 2 with a ferrule. The feeding end of the feeding unit 1 has two feeding ports 3; the end of each feeding port 3 is equipped with a nozzle 4, which has a hollow cone shape and is connected by a clamping sleeve.

Example Embodiment

[0035] Example 3

[0036] As attached figure 1 As shown, another chemical plant of the present invention includes a feeding unit 1 and a stirring unit 2. The stirring unit 2 is a self-priming pump structure with an inlet 5 and a closed cavity with an outlet 6, and an external motor 8 is installed in the cavity. Driven stirring impeller 7; the feeding unit 1 is tubular, one end is the feeding end, and the other end is threadedly connected with the inlet 5 of the stirring unit 2. The feeding end of the feeding unit 1 has two feeding ports 3; the end of the feeding port 3 is equipped with a nozzle 4, which is shower-shaped and threaded.

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Abstract

The invention provides a chemical device and a method for preparing an ultra-fine rare earth compound through the device. The device comprises a feeding unit (1) and a stirring unit (2), the stirring unit (2) is provided with an airtight cavity provided with an inlet (5) and an outlet (6), and a stirring impeller (7) is disposed in the cavity; the feeding unit (1) is tubular, one end of the feeding unit is a feeding end, and the other end of the feeding unit is connected with the inlet (5) of the stirring unit (2). The feeding unit (1) is provided with at least two feed inlets (3), and the tail end of each feed inlet (3) is provided with a nozzle (4). Rare earth feed liquid and a precipitator enter the feeding unit from different feed inlets (3) and the nozzles (4) of the feeding unit (1), are stirred by the stirring impeller (7) at high speed, react with each other and then are sprayed out through the outlet (6). The obtained slurry is filtered, washed, dried or fired, and the ultra-fine rare earth compound is obtained. The device is small and simple in structure, convenient to manufacture and use, easy to clean and capable of being used for preparing the ultra-fine rare earth compound with D50 smaller than or equal to 1 micrometer, and parts are easy to replace.

Description

technical field [0001] The invention relates to a chemical device and a method for preparing ultrafine rare earth compounds by using the device, belonging to the technical field of chemical reaction equipment and preparation methods. 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] The preparation method of rare earth ultrafine powder can be divided into solid phase method, liquid phase method and gas phase method according to the aggregation state of the substance. The solid-phase method has a large processing capacity, but its energy utilization rate is low, impurities are easily introduced during the preparation process, the prepared powder has a wide particle size distribution, and the sha...

Claims

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Application Information

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IPC IPC(8): C01F17/00
CPCC01F17/206C01P2004/61C01P2004/62
Inventor 龚斌钟亮钟晓林潘启萍谢瑞平吴骁
Owner QIANDONG RARE EARTH GRP
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