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Ceramic filter element and method for manufacturing the same

A filter element, ceramic microporous technology, used in mobile filter element filters, loose filter material filters, ceramic products, etc., can solve problems such as energy consumption

Active Publication Date: 2016-01-13
METSO OUTOTEC (FINLAND) OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such a large process is usually very energy-intensive, so devices to reduce unit energy consumption are required

Method used

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  • Ceramic filter element and method for manufacturing the same
  • Ceramic filter element and method for manufacturing the same
  • Ceramic filter element and method for manufacturing the same

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Embodiment Construction

[0035] The principles of the invention can be applied to drying or dewatering fluid materials in any industrial process, in particular the mineral or mining industry. In the embodiments described herein, the material to be filtered refers to slurry, but embodiments of the invention are not limited to this type of fluid material. The slurry may have a high solids concentration such as base metal concentrates, iron ore, chromite, ferrochrome, copper, gold, cobalt, nickel, zinc, lead and pyrite. Below, an exemplary embodiment of a filter plate for a rotary vacuum disc filter is shown, but the principles of the invention can also be applied to the filtration of other types of vacuum filters such as rotary vacuum drum filters medium.

[0036] figure 1 is a perspective top view showing an exemplary disc-shaped filter device to which a filter plate according to an embodiment of the present invention may be applied. The exemplary disc filter apparatus 10 includes a cylindrical drum...

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Abstract

The invention relates to a ceramic filter element (22) for removal of liquid from solids containing material in a capillary suction dryer. The filter element comprises a ceramic substrate covered by a sintered ceramic microporous layer (31). The sintered microporous membrane layer is provided with coarse solid particles (71) of a particle size larger than a pore size of the membrane material layer(31) so as to form a textured surface (50) which prevents a filter cake from sliding off the surface of the filter element prior to the intended cake dis-charge.

Description

technical field [0001] The present invention relates generally to ceramic filter elements. Background technique [0002] Filtration is a widely used process by which a slurry or a solid-liquid mixture is forced through a medium on which the solids are retained and the liquid phase is passed through. This procedure is generally well known in the industry. Examples of filtration types include depth filtration, pressure and vacuum filtration, and gravity and centrifugal filtration. [0003] Both pressure filter and vacuum filter are used in the dehydration of ore dressing. The main difference between pressure filters and vacuum filters is the way the driving force for filtration is generated. In pressure filtration, an overpressure is created in the filter chamber by means of, for example, a diaphragm, a piston, or an external device such as a feed pump. As a result, solids are deposited on the filter media and filtrate flows into the filtrate channels. Since it is more di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20
CPCB01D39/2075B01D2239/0478B01D2239/0654B01D2239/10C02F11/121B01D33/23B01D39/2068B01D39/2072B01D67/0046B01D67/0088B01D69/02B01D33/21B01D2325/06B01D33/15B01D67/00411C04B38/0041C04B38/0038B01D33/25C04B41/4547C04B41/4549B32B18/00C04B2111/00801C04B2111/00362B01D24/4823B01D24/4807B01D25/282B01D29/80B01D33/62B01D29/012
Inventor B·埃克贝格O·赫格纳巴R·欣德斯特罗姆D·埃弗兰E·弗鲁曼
Owner METSO OUTOTEC (FINLAND) OY