Automated production system for producing calcium fluoride crystals using fluorine-containing solutions

Abstract

This invention provides an automated production system for producing calcium fluoride crystals using a fluorine-containing solution. The system includes a crystallization processing device, a circulation module, a feeding module, and an automatic control module. The crystallization processing device includes a first sensor and a second sensor, and the automatic control module is electrically connected to the first and second sensors to control a reflux pump, a fluorine-containing solution pump, a calcium salt solution pump, or a combination thereof. Through the aforementioned technical means, this invention can effectively recover fluorine-containing solutions and obtain high-purity calcium fluoride crystals using a simple, stable, and controllable production technology. This overcomes the limitations of traditional processes, such as low crystal purity leading to the formation of large amounts of calcium fluoride sludge and difficulties in fluorine resource recovery.

Claims

1. An automated production system for producing calcium fluoride crystals using a fluorine-containing solution, comprising: a crystallization processing device having a column, a reflux port in the upper half of the column, an underflow port in the bottom of the column, and the interior of the column forming a first reaction zone, a second reaction zone, and a crystal collection zone connected in communication, wherein the height of the first reaction zone is between the second reaction zone and the crystal collection zone, and the ratio of the inner diameter of the column body of the first reaction zone to that of the column body of the second reaction zone is 1:1.2 to 1:2.5; a circulation module having a reflux pipe and a reflux pump, the reflux pump being disposed between the upstream and downstream sides of the reflux pipe, the reflux port being connected to the underflow port via the reflux pipe; and a feeding module having: A fluorine-containing solution tank, a fluorine-containing solution inlet pipe, and a fluorine-containing solution pump, wherein the fluorine-containing solution tank is connected to the tubing column via the fluorine-containing solution inlet pipe and is connected to the first reaction zone, and the fluorine-containing solution pump is disposed between the upstream and downstream sides of the fluorine-containing solution inlet pipe; a calcium salt solution tank, a calcium salt solution inlet pipe, and a calcium salt solution pump, wherein the calcium salt solution tank is connected to the tubing column via the calcium salt solution inlet pipe and is connected to the first reaction zone, and the calcium salt solution pump is disposed between the upstream and downstream sides of the calcium salt solution inlet pipe; an automatic control module that controls the reflux pump, the fluorine-containing solution pump, the calcium salt solution pump, or a combination thereof.

2. The automated production system as described in claim 1, wherein the length ratio of the column of the first reaction zone to the column of the second reaction zone is 1.1:1 to 1.4:

1.

3. The automated production system as described in claim 1, wherein the volume ratio of the first reaction zone to the second reaction zone is from 1:1.1 to 1:5.

5.

4. The automated production system as described in claim 1, wherein the automated production system includes a discharge module having a discharge pipe, a discharge pump, a solid-liquid separation device, a product conveying pipe and a drying device, the discharge pump being disposed between the upstream and downstream sides of the discharge pipe, the solid-liquid separation device being connected to the bottom of the crystallization processing device via the discharge pipe, and the drying device being connected to the solid-liquid separation device via the product conveying pipe, the discharge pipe being disposed at a position higher than the bottom outlet of the tube column.

5. The automated production system as claimed in claim 1, wherein the crystallization processing apparatus includes a first sensor disposed on the column and located next to the second reaction zone; the automatic control module is electrically connected to the first sensor and receives signals from the first sensor to control the reflux pump, the fluorine solution pump, the calcium salt solution pump, or a combination thereof.

6. The automated production system as described in claim 5, wherein the crystallization processing apparatus includes a second sensor disposed on the column and located next to the second reaction zone, and the height of the second sensor is higher than the position of the first sensor and lower than the position of the reflux port; the automatic control module is electrically connected to the second sensor and receives signals from the second sensor to control the reflux pump, the fluoride solution pump, the calcium salt solution pump, or a combination thereof.

7. The automated production system as described in claim 4, wherein the bottom of the crystallization processing device has a third sensor, the third sensor being positioned above the discharge pipe and below the first reaction zone, and the automatic control module is electrically connected to the third sensor and receives signals from the third sensor to control the discharge pump.

8. The automated production system as claimed in claim 1, wherein the feeding module has a carrier tank, a carrier feed pipe and a carrier pump, the carrier tank is connected to the column via the carrier feed pipe and connected to the first reaction zone, and the carrier pump is disposed between the upstream side and the downstream side of the carrier feed pipe.

9. The automated production system as claimed in claim 1, wherein the crystallization processing apparatus has an overflow port located near the top of the column, and the height of the overflow port is higher than the position of the return port.

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