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Disc type ceramic membrane and one-step forming method thereof

A molding method and ceramic membrane technology, which is applied in the field of ceramic membranes, can solve the problems of reducing the service life of ceramic membranes, reducing the filtering effect of ceramic membranes, and easy separation of support structures, so as to achieve the effects of increasing service life, low cost, and reducing deformation

Pending Publication Date: 2022-05-10
重庆兀盾纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of the disc-type flat ceramic filter membrane provided by the above scheme is to combine the support body by bonding two identical stepped structures. The support body is prepared first, and then the support body is bonded together. The process is complicated, the process is cumbersome, and the bonding method is used, the overall structure is unstable. In the process of long-term use, the support structure is easy to separate, which reduces the filtering effect of the ceramic membrane and reduces the service life of the ceramic membrane.

Method used

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  • Disc type ceramic membrane and one-step forming method thereof
  • Disc type ceramic membrane and one-step forming method thereof
  • Disc type ceramic membrane and one-step forming method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Disc ceramic membrane, if attached figure 1 , attached figure 2 And attached image 3 As shown, it specifically includes: a support body 4 and a separation filter layer. The separation filter layer includes a top membrane 1 and a bottom membrane 2 , and the top membrane 1 and the bottom membrane 2 are respectively located on the upper and lower sides of the support body 4 . The supporting body 4 , the top membrane 1 and the bottom membrane 2 are integrated; the supporting body 4 is in the shape of a flying saucer, and the center of the supporting body 4 is provided with a water-collecting through hole 3 . The outer peripheral end of the support body 4 is closed; the support body 4 is provided with a water collection channel 5 for discharging the filtered solution, and the water collection channel 5 communicates with the water collection through hole 3 .

[0028] The solution is infiltrated from the top membrane 1 of the separation filter layer, under the action of th...

Embodiment 2

[0040] The difference between this example and Example 1 is that in Step 5, the ceramic film semi-finished product is first calcined at 1250°C~1300°C for 1~2h, and ultrasonic dispersion is carried out at the same time; and then heated for 30min to increase the calcining temperature To 1300 ~ 1750 ℃ ​​for calcination molding.

[0041] Under the condition of 1250~1300℃, the combustibles will burn and consume the oxygen in the space formed by the first support layer and the second support layer, and the space formed by the first support layer and the second support layer is relatively close to the air circulation channel of the outside world. Small, the oxygen inside the space formed by the first support layer and the second support layer will be relatively small. Under the condition of 1250~1300℃, the combustion of combustibles will mainly generate CO gas, and the generated CO gas will pass through the first support layer and the second support layer. The second support layer es...

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Abstract

The invention belongs to the technical field of ceramic membranes, and particularly relates to a disc type ceramic membrane and a one-time forming method thereof.The one-time forming method specifically comprises the following steps that firstly, ceramic membrane supporting body raw materials are laid on a mold, and a first supporting layer is formed; 2, a loose body is laid on the first supporting layer, and the loose body comprises combustible materials; 3, laying a ceramic membrane support body raw material on the first support layer and the loose body to form a second support layer; 4, performing dry pressing to form a ceramic membrane semi-finished product; 5, drying and calcining the ceramic membrane semi-finished product to form a ceramic membrane support body finished product; and 6, coating the surface of the support body, drying and calcining to form a ceramic membrane finished product. By adopting a support body integrated dry pressing molding technology, the whole structure of the disc-type ceramic membrane support body is firmer, and the service life of the ceramic membrane is prolonged; deformation of the ceramic membrane is integrally reduced, the sintering speed is high, the filtering effect of the ceramic membrane is better, and the cost is lower.

Description

technical field [0001] The invention belongs to the technical field of ceramic membranes, and in particular relates to a dish-type ceramic membrane and a one-time forming method thereof. Background technique [0002] Ceramic membranes, also known as inorganic ceramic membranes, are asymmetric membranes prepared from inorganic ceramic materials through special processes. Ceramic membranes are divided into tubular ceramic membranes and flat ceramic membranes. The tube wall of the tubular ceramic membrane is densely covered with micropores. Under the action of pressure, the raw material liquid flows in the membrane tube or outside the membrane, small molecular substances (or liquid) pass through the membrane, and macromolecular substances (or solids) are intercepted by the membrane, thereby achieving separation, Concentration, purification and environmental protection purposes. The surface of the flat ceramic membrane is densely covered with micropores. According to the diffe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D69/10B01D71/02
CPCB01D67/0039B01D67/0041B01D69/10B01D71/02B01D71/024B01D71/025
Inventor 郝恩奇何世斌常启兵
Owner 重庆兀盾纳米科技有限公司
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