Dynamic crystallization equipment for potassium fluotantalate

A technology of potassium fluorotantalate and crystallization equipment, which is applied in the field of dynamic crystallization equipment of potassium fluorotantalate, can solve the problems that no one has come up with solutions, increase processes, etc., achieve a large proportion, improve product quality, and heat exchange efficiency. high effect

Pending Publication Date: 2022-06-28
稀美资源(广东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When entering the next process, it is easier for small particles to be dissolved and evenly mixed with other items, while large ones need to be broke

Method used

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  • Dynamic crystallization equipment for potassium fluotantalate
  • Dynamic crystallization equipment for potassium fluotantalate
  • Dynamic crystallization equipment for potassium fluotantalate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, a kind of dynamic crystallization equipment of potassium fluorotantalate, such as Figure 1 to Figure 4 As shown, it includes a tank assembly 1, a stirring blade assembly 2, a pinion 31, a large gear 32 and a motor 4; the tank assembly 1 includes a tank body 11, the tank body 11 is cylindrical, the bottom is funnel-shaped, and the bottom is the discharge material Port 15, a valve is set on the discharge port 15 to control the opening and closing of the discharge port; the top of the tank 11 is provided with a feeding port 12, and the high-temperature concentrated potassium fluorotantalate solution is put in from the feeding port; stirring blade assembly 2 Including a cold medium inlet pipe 21 and a plurality of stirring blades 22, the plurality of stirring blades 22 are fixedly installed on the cold medium inlet pipe 21, and the cold medium inlet pipe 21 is connected with the tank body 11 through a rotating pair; the stirring blades 22 are located in the ta...

Embodiment 2

[0046]Embodiment 2, a dynamic crystallization control method of potassium fluorotantalate, comprising collecting the crystal particle size of potassium fluorotantalate and determining the stirring speed according to the crystal particle size of potassium fluorotantalate; When the particle size of the potassium fluorotantalate is 10-500 μm, the stirring blade assembly 2 is stirred at a speed of 20 rpm; when the potassium fluorotantalate crystal particles are When the particle size is 500-1500μm, the stirring blade assembly 2 is stirred at a speed of 10 rpm; when the crystal particle size of potassium fluorotantalate is 1500-2000 μm, the stirring blade assembly 2 is stirred at a speed of 5 rpm. The potassium crystal particles are precipitated and enriched downward; when the particle size of the potassium fluorotantalate crystal is above 2000 μm, the stirring blade assembly 2 is stirred at a speed of 2 rpm. After the crystallization is completed, the discharge port 15 is opened, a...

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PUM

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Abstract

The invention belongs to the technical field of chemical reaction vessels, and relates to dynamic crystallization equipment for potassium fluotantalate. Cold water enters the circuitous hole through the cold medium inlet pipe, the cooling capacity of the cold water is transmitted to the stirring blades and the surrounding potassium fluotantalate solution, and the cold water is discharged from an outlet of the circuitous hole, then enters the connecting vertical pipe, flows upwards, enters the water return ring through the water return elbow and the water passing hole of the sealing ring, and flows into the water receiving ring through the water drainage hole of the water return ring. And the water is buffered and temporarily stored in the space between the water return ring and the water receiving ring, and then flows out of the tank body through the water receiving ring drain hole and the drain pipe. The laser particle analyzer detects the size of particles in the potassium fluotantalate solution in real time and sends information to the PLC, and the PLC controls the rotating speed of the stirring blade assembly through the motor according to the received information. The invention has the advantages of high heat exchange efficiency, uniform size of crystal grains separated by crystallization, good product quality, no serious crystal adhesion, automatic detection of granularity size, automatic adjustment of stirring speed, and small cleaning workload.

Description

technical field [0001] The invention belongs to the technical field of chemical reaction vessels, relates to a crystallizing vessel, and in particular relates to a dynamic crystallizing device for potassium fluorotantalate. Background technique [0002] Potassium fluorotantalate, an inorganic salt with the chemical formula KTa 2 F 7 , is a white crystalline powder, slightly soluble in cold water, hydrofluoric acid, soluble in hot water, mainly used for making metal tantalum and other tantalum compounds, also used as catalyst, reagent, is a very important chemical raw material. [0003] Potassium fluorotantalate is synthesized in water, and the obtained potassium fluorotantalate is an aqueous solution of potassium fluorotantalate. The temperature is between 90 and 100 degrees, and then the aqueous potassium fluorotantalate is cooled slowly and evenly, and the potassium fluorotantalate becomes a saturated solution, and Crystallization out. [0004] In order to obtain potass...

Claims

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Application Information

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IPC IPC(8): B01D9/02B01F27/2122B01F27/90C01G35/00
CPCB01D9/0004C01G35/006
Inventor 邓朝勇李石凤丁忠耀李斌刘小敏张劲
Owner 稀美资源(广东)有限公司
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