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Granular ceramic material with high porosity

A ceramic material and granular technology, applied in the field of high-porosity granular ceramic materials, can solve the problems of lack, limit the number of adsorbed bacteria, high porosity, etc., and achieve the effect of avoiding tree drought

Inactive Publication Date: 2005-05-25
PFLEIDERER WATER SYST GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these materials lack high porosity, which limits the amount of bacteria adsorbed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] To obtain a granulated liquid product, from 8.2% by weight of Na 2 O, 27.3% SiO by weight 2 , and sodium silicate consisting of 64.5% by weight of water was dissolved in water at a weight ratio of 75:25 water to water glass. The granulation liquid obtained in this way is mixed with SiO containing 84% by weight at an inflow rate of 20 l / h in the granulation pan. 2 , 5.8% Al by weight 2 o 3 , 2.7% Fe by weight 2 o3 , 1.4% by weight of MgO+CaO and 0.7% by weight of Na 2 O+K 2 O, mixed with diatomaceous earth delivered to the granulation pan at an inflow rate of 20 kg / h. The granulation was carried out in a granulation pan with a side-to-height ratio of H / D=0.28. During granulation, the pan was tilted at an angle of 50°±5° and rotated at a speed of 6 to 7 revolutions per minute so that more than 95% of the granules were in the size range of 6 to 12 mm. The granules produced in this way are fed through a 12 m long rotary kiln with a heating zone of 6 m and a cooling ...

Embodiment 2

[0043] For the production of granulation liquid, from 8.2% by weight of Na 2 O, 27.3% SiO by weight 2 , and sodium silicate consisting of 64.5% by weight of water was dissolved in water in a weight ratio of 95:5 water to water glass. The granulation liquid obtained in this way is mixed with 75% SiO by weight in the granulation pan at an inflow rate of 20 l / h. 2 , 9.0% Al by weight 2 o 3 , 6.0% Fe by weight 2 o 3 , 2.5% by weight of CaO, 1.0% by weight of MgO, and 2.5% by weight of Na 2 O+K 2 O, mixed with diatomaceous earth delivered to the granulation pan at an inflow rate of 25 kg / h. The granulation was carried out in a granulation pan with a side-to-height ratio of H / D=0.28. During granulation, the pan was tilted at an angle of 60°±5° and rotated at a speed of 6 to 7 revolutions per minute so that more than 95% of the granules were in the size range of 1 to 15 mm. The granules produced in this way are fed through a 12 m long rotary kiln with a heating zone of 6 m a...

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Abstract

The present invention relates to containing SiO 2 and Na 2 O and / or K 2 O ceramic material, characterized in that the material has a porosity greater than 60% and more than 70% of the pores have a pore diameter of 0.1 to 15 μm. The ceramic material is suitable for use as filter material, water storage material and adsorbent.

Description

technical field [0001] The present invention relates to SiO-based 2 and Na 2 O and / or K 2 O ceramic material, a method of producing the ceramic material, and in particular the use of the ceramic material as filter material, water storage and adsorbent. Background technique [0002] It is generally known that porous ceramic materials are particularly suitable as filter materials and can be used as adsorbents. In both cases, the porosity and / or large surface area of ​​these materials are applied. [0003] Thus, as in the case of sand and gravel being used as filter media, the individual particles themselves are not porous. Porosity is achieved by stacking them, making them permeable to liquids. Due to the small surface area available for this packing, greater quantities of sand and particles are required for filtration than granular materials which are inherently porous. [0004] In addition, the use of activated carbon as filter material is well known. Activated carbon...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B28/26B01J20/14C02F1/28C04B111/40
CPCB01J20/14B01J20/28078B01J20/28085C02F1/281C04B38/009C04B35/14C04B38/0054C04B38/0074C04B14/08
Inventor 安东尼奥·詹格拉索
Owner PFLEIDERER WATER SYST GMBH
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