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Manufacturing method of straight-bore ceramic filter and manufacturing system thereof

A technology of ceramic filters and straight holes, applied in chemical instruments and methods, filtration and separation, manufacturing tools, etc., can solve the problems of reduced production efficiency, low precision, and large deformation of finished products, and achieve good surface quality and high temperature performance Good, high strength at room temperature

Active Publication Date: 2010-06-23
JINAN SHENGQUAN DOUBLE SURPLUS CERAMIC FILTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The above-mentioned patents WO2007028556A1 and WO2008001034A1 do not involve special treatment of raw materials, such as figure 1 As shown, its main steps can include three major steps of raw material preparation, molding, and sintering, wherein the moisture content of the raw materials used is generally above 10%, which is a wet or semi-dry preparation process. In the mixing step, only using Pushing by water pressure or general mechanical mixing methods will cause defects such as uneven mixing of raw material particles and bubbles mixed in them, resulting in poor fluidity of raw material particles in the subsequent process and unable to quickly fill the mold cavity. The production efficiency is reduced, and due to the large shrinkage of drying and firing in the later stage, the deformation of the finished product is large, and the precision is not high

Method used

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  • Manufacturing method of straight-bore ceramic filter and manufacturing system thereof
  • Manufacturing method of straight-bore ceramic filter and manufacturing system thereof
  • Manufacturing method of straight-bore ceramic filter and manufacturing system thereof

Examples

Experimental program
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Effect test

example 1

[0173] Materials: Bauxite (200 mesh, alumina content 76.42%, iron oxide content 1.41%) 300 kg, potassium feldspar (325 mesh, potassium oxide content 10.24%) 12 kg, kaolin (400 mesh, alumina content 45.63%) , iron oxide content 0.96%) 400 kilograms, quartz (250 orders, silicon oxide content 97.31%) 10 kilograms, cellulose (commercially available industrial product) 5 kilograms, add 500 kilograms of water and stir and mix 20 minutes, make slurry;

[0174] Pressure spray granulation: using image 3 For the pressure spray granulation equipment shown, the spray pressure is controlled at 1.2MPa, the nozzle diameter is 1.2mm, the moisture content of the obtained granulated powder particles is controlled at 2-4%, and the bulk density of the granulated powder is 0.92-1.05g / cm 3 ;

[0175] Dry pressing: the above powder is put into the cavity of the mold, and pressed by a JT-5 hydraulic press, forming with a pressure of 4 tons, and the density of the formed semi-finished product reache...

example 2

[0179] Materials: 100 kg of zircon powder (250 mesh, zirconia content 42.68%), bauxite (250 mesh, alumina content 75.63%, iron oxide content 1.30%) 130 kg, black clay (400 mesh, alumina content 35.53 %, iron oxide content 1.02%) 420 kg, Fangzi soil (400 mesh, alumina content 40.32%, iron oxide content 1.43%) 200 kg, Inner Mongolia feldspar (325 mesh, potassium oxide content 11.52%) 100 kg, starch 3 kilograms, 4 kilograms of saponification liquid (commercially available), add 570 kilograms of water, mix 30 minutes, make slurry;

[0180] Centrifugal spray granulation: using Figure 4 For the centrifugal spray granulation equipment shown, the moisture content of the obtained granulated powder is 1.0-2.0%, and the bulk density is 0.95-1.10g / cm 3 ;

[0181] Dry pressing: put the above powder into the cavity of the mold, press it with JT-10 hydraulic press, the pressure is 8 tons, and the density of the semi-finished product is 1.72g / cm 3 above;

[0182] Sintering: use a continu...

example 3

[0185] Prepare materials: 200 kg of alumina powder (200 mesh, alumina content 96.47%), 12 kg of potassium feldspar (325 mesh, potassium oxide content 11.52%), Datong soil (400 mesh, alumina content 44.35%, iron oxide content 1.05 %) 350 kilograms, 10 kilograms of quartz (250 orders, silicon oxide content 97.31%), 2.35 kilograms of cellulose (commercially available industrial grade), 3 kilograms of emulsified paraffin wax (self-made), add 610 kilograms of water, ball mill and mix for 40 minutes, the finished material pulp;

[0186] Pressure spray granulation; the pressure is controlled at 1.2MPa, the nozzle diameter is 1.2mm, the moisture content of the obtained granulated powder particles is controlled at 2-4%, and the bulk density of the obtained granulated powder is 0.92-1.05g / cm after passing through a 40-mesh sieve 3 ;

[0187] Dry pressing molding: the above powder is put into the cavity of the mold, and pressed by a JT-100 hydraulic press with a pressure of 50 tons to m...

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Abstract

The invention relates to a manufacturing method of a straight-bore ceramic filter and a manufacturing system thereof. The method comprises the following steps: a) raw material preparing: evenly mixing raw materials and adding water to mix into raw material stuff; b) granulation process: granulating the raw material stuff to obtain powder lot; c) molding: mold pressing the powder lot into needed shapes to obtain a straight-bore ceramic filter green body; d) and sintering: sintering the straight-bore ceramic filter green body into a finished product at high temperature, wherein the raw material granulation process adopts a pressure spraying granulation method or a centrifugal granulation method. The method improves the fluidity of the raw material by the granulation process for the raw material, ensures the raw material to rapidly fill a die cavity of a die in dry press, and therefore improves the accuracy and yield of the straight-bore filter.

Description

technical field [0001] The invention relates to a filtering device, in particular to a manufacturing method and a manufacturing system of a straight-hole ceramic filter for filtering impurities in molten metal. Background technique [0002] Liquid metal contains many impurities, such as slag, inclusions, gas and so on. Before being processed into metal products, liquid metal must be filtered and purified in order to remove impurities and improve the quality and performance of metal products. At present, there are four main types of small filter devices used for liquid metal purification: cloth mesh filter, foam ceramic filter, honeycomb ceramic filter, and straight hole ceramic filter. [0003] Among them, although the cost of the cloth mesh filter is low, the filtering effect is not good enough and it is inconvenient to use; the filtering effect of the foam ceramic filter is the best, but the cost is also high; the strength of the mesh ceramic filter and the resistance to ...

Claims

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Application Information

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IPC IPC(8): B28B3/00B01J2/04C04B35/622B01D39/20C22B9/02B22D11/119
CPCY02P10/20
Inventor 唐一林祝建勋王国栋吕爱霞
Owner JINAN SHENGQUAN DOUBLE SURPLUS CERAMIC FILTER
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