CN101428187B - Method for producing environment friendly ceramic filtering material with magnesium slag - Google Patents
Method for producing environment friendly ceramic filtering material with magnesium slag Download PDFInfo
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- CN101428187B CN101428187B CN2008101979396A CN200810197939A CN101428187B CN 101428187 B CN101428187 B CN 101428187B CN 2008101979396 A CN2008101979396 A CN 2008101979396A CN 200810197939 A CN200810197939 A CN 200810197939A CN 101428187 B CN101428187 B CN 101428187B
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Abstract
The invention relates to a method for preparing ceramic filtration materials. The method for preparing environment-friendly ceramic filtration materials by utilizing magnesium slag is characterized in that the method comprises the following steps: 1), stock preparation: for preparation, the magnesium slag are subjected to 120 meshes of crushing, and a fluxing agent, quartz sand and talc are subjected to 180 meshes of crushing respectively; according to the weight percentage, magnesium slag accounting for 50-60%, smolmitza 17%, quartz sand 3%, talc 3%, and fluxing agent 17-27% are selected, and then subjected to dry mixing in a globe mill for 20-24 hours to obtain stock; 2) balling: in order to obtain billet balls, the stock is placed in a ball forming mill, subjected to water spraying to obtain ball cores, 0.5 in diameter, which is subjected to water spraying again to obtain balls, the diameter of which is as required, then rolled for 2-3 minutes; 3) drying; and 4) sintering: dried billet balls are subjected to sintering at a temperature of 1050 DEG C-1150 DEG C in a tunnel kiln or a shuttle kiln to obtain the environment-friendly ceramic filtration materials. The method is characterized by efficient use of magnesium slag and environmental protection. The environment-friendly ceramic filtration materials obtained by using the method have the advantages of high strength and high air porosity. The invention is suitable for the field of environment-friendly water treatment.
Description
Technical field
The invention belongs to the environmental friendly material technical field, be specifically related to a kind of preparing ceramic filtration materials.
Background technology
The Environmental Protection in China water treatment field need be used a large amount of filtering materials, mainly is quartz sand, anthracite, walnut shell, active carbon etc. at present.Long-term water treatment facts have proved that quartz sand, ANTHRACITE FILTER MEDIA easily stop up and harden, backwash cost height; The walnut shell filtering material adsorption effect still can, run off but easily float during backwash, cause secondary pollution; Activated carbon adsorptive capacity is stronger, but intensity is low and cost an arm and a leg.Therefore, ceramic filter material is durable, high-strength with it, porous and easy excellent properties such as regeneration, becomes the filtrate of new generation of water treatment field, and its demand increases year by year.
The magnesium slag is the waste residue that utilizes the dolomite smelting magnesium to produce, and stores up in a large number in China, does not effectively utilize approach.Have patent such as " Mg-slag brick and preparation method thereof " (CN1830872) and " a kind of Mg-slag brick with high strength and preparation method thereof " (CN101096305A) wait title, utilize the magnesium slag can making burn-free bricks, but because the magnesium slag has causes such as dilatancy, limited it and used, so Mg-slag brick does not have large-scale application building by laying bricks or stones in building.The long-term bulk deposition of magnesium slag, land occupation not only produces dust pollution, and can produce soil and underground water and pollute, and economic development and people's lives is caused have a strong impact on.
Summary of the invention
The object of the present invention is to provide a kind of method of utilizing the magnesium slag to prepare environment friendly ceramic filtering material, this method magnesium slag utilization rate height, environmental protection, the environment friendly ceramic filtering material that this method obtains has high strength and high porosity.
To achieve these goals, technical scheme of the present invention is: utilize the magnesium slag to prepare the method for environment friendly ceramic filtering material, it is characterized in that it comprises the steps:
1) blank preparation: with broken 120 orders of crossing of magnesium slag, broken respectively 180 orders of crossing of flux, quartz sand and talcum, standby; Be by weight percentage: magnesium slag 50～60%, smolmitza 17%, quartz sand 3%, talcum 3%, flux 17～27% is chosen magnesium slag, smolmitza, quartz sand, talcum and flux; Did mixed 20～24 hours with ball mill, get blank;
Described flux is the mixing of any one or two or more arbitrarily (containing any two kinds) in potassic feldspar, albite, wollastonite, the lithium porcelain stone, is any proportioning during any two or more mixing;
2) balling-up: earlier above-mentioned blank being put into nodulizer, to spray water into diameter be that (injection flow rate is 0.9～1.1wt%) of a billet weight for 0.5 millimeter ball, and then (diameter is generally 0.8～5 millimeter to spray water into the ball of required diameter, injection flow rate is 6～8wt%) of a billet weight, rolled again 2～3 minutes, and got the base ball;
3) drying: with the base ball 80～120 ℃ of dryings 4～5 hours;
4) burn till: dried base ball is burnt till in 1050 ℃～1150 ℃ in tunnel cave or shuttle kiln, environment friendly ceramic filtering material.
The invention has the beneficial effects as follows:
1. adopt one or more high temperature fluxs to prepare the ceramic filter material prescription first, can obtain the ceramic filter material of high strength and high porosity at 1050～1150 ℃ of sintering with the magnesium slag;
2. first at big with the relatively more loose characteristics of magnesium slag ridge, taked the segmentation spherical container shaping method--earlier above-mentioned ingredients mixture is put into the ball that nodulizer is sprayed water into 0.5 millimeter of diameter, and then spray water into the ball (being generally 0.8～5 millimeter) of required diameter, not adding water at last rolled 2～3 minutes again, the higher base ball of intensity be can obtain, ensuing drying and firing process helped;
3. the present invention utilizes the magnesium slag to prepare the huge water treatment ceramic filter material of consumption first, for the utilization of magnesium slag provides a new approach, so the present invention has the meaning of environmental protection;
4. the shared percentage by weight of magnesium slag is: 50～60%, and magnesium slag utilization rate height, environmental.
Environment friendly ceramic filtering material of the present invention is applicable to environmental protection water treatment (particularly oily waste water processing) field.
Description of drawings
Fig. 1 is the ESEM picture of the embodiment of the invention 1 gained environment friendly ceramic filtering material.
The specific embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with example, but the present invention not only is confined to the following examples.
Embodiment 1:
Utilize the magnesium slag to prepare the method for environment friendly ceramic filtering material, it comprises the steps:
1) blank preparation: with broken 120 orders of crossing of the magnesium slag of Hebi, Henan, broken respectively 180 orders of crossing of flux, quartz sand and talcum, standby; Be by weight percentage: magnesium slag 60%, smolmitza 17%, quartz sand 3%, talcum 3%, flux 17% is chosen magnesium slag, smolmitza, quartz sand, talcum and flux; Did mixed 24 hours with ball mill, get blank;
Described flux is potassic feldspar and wollastonite, the weight ratio=1:2 of potassic feldspar and wollastonite;
2) balling-up: earlier above-mentioned blank being put into nodulizer, to spray water into diameter be 0.5 millimeter ball (injection flow rate is the 1wt% of billet weight), and then (diameter is 0.8～5 millimeter to spray water into the ball of required diameter, injection flow rate is the 8wt% of billet weight), rolled again 2～3 minutes, and got base ball (moisture 9wt%);
3) drying: the base ball is put into the dry drawer of dry base car, push in the hot air type drier, 120 ℃ of dryings 4 hours;
4) burn till: dried base ball is reinstalled in the pallet saggar of pallet saggar car, in tunnel cave, burns till in 1140 ℃, environment friendly ceramic filtering material.
After tested, the environment friendly ceramic filtering material crush strength that the present invention produces reaches 20MPa, the porosity is 37%, acid resistance is 99.4%, alkali resistance is 99.9%, be a kind of high-quality filtrate that is widely used and is worth, have broad application prospects at trade effluent such as oil extraction waste water, rolling effluent, dyeing waste water, paper waste and drinking water treatment field.Fig. 1 is the ESEM picture of the embodiment of the invention 1 gained environment friendly ceramic filtering material, has shown the microstructure that it is good.
Magnesium slag ceramic filter material of the present invention is used for certain oil production waste water in oil field handles, its water treatment result has reached the Al standard (seeing Table 1) of " clastic rock oil reservoir injection water quality is recommended index and analytical method SY5329-94 " regulation.
Embodiment 2:
Utilize the magnesium slag to prepare the method for environment friendly ceramic filtering material, it comprises the steps:
1) blank preparation: with broken 120 orders of crossing of magnesium slag (waste residue that utilizes the dolomite smelting magnesium to produce), broken respectively 180 orders of crossing of flux, quartz sand and talcum, standby; Be by weight percentage: magnesium slag 50%, smolmitza 17%, quartz sand 3%, talcum 3%, flux 27% is chosen magnesium slag, smolmitza, quartz sand, talcum and flux; Did mixed 20 hours with ball mill, get blank;
Described flux is albite and lithium porcelain stone, the weight ratio=1:1 of albite and lithium porcelain stone;
2) balling-up: earlier above-mentioned blank being put into nodulizer, to spray water into diameter be 0.5 millimeter ball (injection flow rate is the 1wt% of billet weight), and then (diameter is 0.8～5 millimeter to spray water into the ball of required diameter, injection flow rate is the 6wt% of billet weight), rolled again 2～3 minutes, and got base ball (moisture 7wt%);
3) drying: the base ball is put into the dry drawer of dry base car, push in the hot air type drier, 80 ℃ of dryings 4 hours;
4) burn till: dried base ball is reinstalled in the pallet saggar of pallet saggar car, in tunnel cave, burns till in 1050 ℃, environment friendly ceramic filtering material.
Embodiment 3:
Utilize the magnesium slag to prepare the method for environment friendly ceramic filtering material, it comprises the steps:
1) blank preparation: with broken 120 orders of crossing of magnesium slag (waste residue that utilizes the dolomite smelting magnesium to produce), broken respectively 180 orders of crossing of flux, quartz sand and talcum, standby; Be by weight percentage: magnesium slag 55%, smolmitza 17%, quartz sand 3%, talcum 3%, flux 22% is chosen magnesium slag, smolmitza, quartz sand, talcum and flux; Did mixed 22 hours with ball mill, get blank; Described flux is a potassic feldspar;
2) balling-up: earlier above-mentioned blank being put into nodulizer, to spray water into diameter be 0.5 millimeter ball (injection flow rate is the 1wt% of billet weight), and then (diameter is 0.8～5 millimeter to spray water into the ball of required diameter, injection flow rate is the 7wt% of billet weight), rolled again 2～3 minutes, and got base ball (moisture 8wt%);
3) drying: the base ball is put into the dry drawer of dry base car, push in the hot air type drier, 90 ℃ of dryings 4.5 hours;
4) burn till: dried base ball is reinstalled in the pallet saggar of pallet saggar car, in shuttle kiln, burns till in 1150 ℃, environment friendly ceramic filtering material.
Table 1: magnesium slag ceramic filter material is handled the experimental result of certain oil-containing wastewater
| Project | Former water index | Effluent index | Clearance (%) | The Al standard |
| Suspension content (mg/L) | 20.17 | 0.85 | 95.8％ | <1 |
| Median particle size (μ m) | 3.68 | 0.97 | 73.6％ | <1 |
| Oil content (mg/L) | 21.97 | 0.61 | 97.2％ | <5 |
| Total iron content (mg/L) | 5.0 | 0.50 | 90.0％ | <0.5 |
| The pH value | 7.78 | 7.07 | 6.5-7.5 |
Claims (2)
1. utilize the magnesium slag to prepare the method for environment friendly ceramic filtering material, it is characterized in that it comprises the steps:
1) blank preparation: with broken 120 orders of crossing of magnesium slag, broken respectively 180 orders of crossing of flux, quartz sand and talcum, standby; Be by weight percentage: magnesium slag 50～60%, smolmitza 17%, quartz sand 3%, talcum 3%, flux 17～27% is chosen magnesium slag, smolmitza, quartz sand, talcum and flux; Did mixed 20～24 hours with ball mill, get blank;
Described flux is any one or the arbitrarily two or more mixing in potassic feldspar, albite, wollastonite, the lithium porcelain stone, is any proportioning during any two or more mixing;
2) balling-up: earlier above-mentioned blank being put into nodulizer, to spray water into diameter be 0.5 millimeter ball, and then spray water into the ball of required diameter, rolled again 2～3 minutes, the base ball; The described diameter of spraying water into is that the injection flow rate of 0.5 millimeter ball is 0.9～1.1% of a billet weight, and described injection flow rate of spraying water into the ball of required diameter again is 6～8% of a billet weight;
3) drying: with the base ball 80～120 ℃ of dryings 4～5 hours;
4) burn till: dried base ball is burnt till in 1050 ℃～1150 ℃ in tunnel cave or shuttle kiln, environment friendly ceramic filtering material.
2. the method for utilizing the magnesium slag to prepare environment friendly ceramic filtering material according to claim 1 is characterized in that: the diameter of the ball of required diameter is 0.8～5 millimeter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101979396A CN101428187B (en) | 2008-11-27 | 2008-11-27 | Method for producing environment friendly ceramic filtering material with magnesium slag |
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| CN2008101979396A CN101428187B (en) | 2008-11-27 | 2008-11-27 | Method for producing environment friendly ceramic filtering material with magnesium slag |
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| CN101428187A CN101428187A (en) | 2009-05-13 |
| CN101428187B true CN101428187B (en) | 2011-05-11 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102070323B (en) * | 2010-09-25 | 2013-06-12 | 东莞乔隆家具配件制品有限公司 | Production process of alkaline ceramic balls |
| CN102125786B (en) * | 2011-02-24 | 2012-08-29 | 南昌大学 | Method for preparing porous ceramsite filter material by using lepidolite extracted lithium slag |
| CN106747319A (en) * | 2017-01-22 | 2017-05-31 | 北方民族大学 | Standby porous ceramics of a kind of utilization magnesium slag, coal ash for manufacturing and preparation method thereof |
| CN113636835B (en) * | 2021-08-30 | 2022-11-18 | 武汉理工大学 | Anorthite heat storage ceramic prepared from magnesium slag and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094988A (en) * | 1994-04-22 | 1994-11-16 | 景德镇市特种陶瓷研究所 | Porous ceramic filter element and full ceramic purifying drinker |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094988A (en) * | 1994-04-22 | 1994-11-16 | 景德镇市特种陶瓷研究所 | Porous ceramic filter element and full ceramic purifying drinker |
Non-Patent Citations (2)
| Title |
|---|
| 李云琴.利用含铬钙镁渣制造陶瓷砖试验研究.陶瓷学报24 2.2003,24(2),实验部分. |
| 李云琴.利用含铬钙镁渣制造陶瓷砖试验研究.陶瓷学报24 2.2003,24(2),实验部分. * |
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Granted publication date: 20110511 Termination date: 20121127 |