Red stoneware mineral aggregate lightweight porous ceramsite and preparation method thereof

A technology for porous ceramics and minerals, applied in ceramic products, chemical instruments and methods, clay products, etc., can solve the problems of high energy consumption for crushing and grinding, high hardness of metal tailings, difficult to completely separate, etc., and is conducive to environmental protection. , the effect of wide roasting temperature and high yield

Inactive Publication Date: 2017-06-20
洛阳逸人紫砂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the above-mentioned porous ceramsite produced with metal tailings (such as lead-zinc ore, iron tailings, tungsten tailings, etc.), construction waste, sludge, etc., due to the lead, arsenic, cadmium, mercury, etc. The content of polluting heavy metals is often relatively high, and it is difficult to completely separate them. Even after high-temperature roasting, there are hidden dangers of dissolution, which is very unfavorable for the application background of water purification treatment.
In addition, the hardness of metal tailings is high, and the energy consumption of crushing and grinding is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The formula of the purple sand ore lightweight porous ceramsite of the present embodiment includes the following materials in parts by weight: 78 parts of purple sand ore, 16 parts of pore-forming agent and 6 parts of flux. The preparation process steps of the present embodiment are:

[0041] Step 1, drying and crushing the purple sand mineral material naturally, the particle sizes after crushing are respectively 80-300 mesh, 20-80 mesh and 5-20 mesh;

[0042] Step 2. Select 78 parts of pulverized purple sand ore, including 20 parts of particle size 80-300 mesh, 25 parts of 20-80 mesh, 55 parts of 5-20 mesh; and 16 parts of pore-forming agent and 6 parts of flux Mix in proportion, add water and stir well;

[0043] Step 3, rolling the mixed material into spherical raw meal particles with a diameter of 4mm;

[0044] Step 4. The spherical raw meal particles are stale at room temperature for 24 hours, and then dried in a drying oven at 105°C for 4 hours;

[0045] Step 5....

Embodiment 2

[0050] The formula of the purple sand ore lightweight porous ceramsite in the present embodiment includes the following materials in parts by weight: 82 parts of purple sand ore, 14 parts of pore-forming agent and 4 parts of flux. The preparation process steps of the present embodiment are:

[0051] Step 1, drying and crushing the purple sand mineral material naturally, the particle sizes after crushing are respectively 80-300 mesh, 20-80 mesh and 5-20 mesh;

[0052] Step 2. Select 82 parts of pulverized purple sand ore, including 20 parts of particle size 80-300 mesh, 25 parts of 20-80 mesh, and 55 parts of 5-20 mesh; and 14 parts of pore-forming agent and 4 parts of flux Mix in proportion, add water and stir well;

[0053] Step 3, rolling the mixed material into spherical raw meal particles with a diameter of 5mm;

[0054] Step 4. The spherical raw meal particles are stale at room temperature for 24 hours, and then dried in a drying oven at 105°C for 4 hours;

[0055] Ste...

Embodiment 3

[0057] The formula of the purple sand ore lightweight porous ceramsite of the present embodiment includes the following materials in parts by weight: 86 parts of purple sand mineral, 12 parts of pore-forming agent and 2 parts of flux. The preparation process steps of the present embodiment are:

[0058] Step 1, drying and crushing the purple sand mineral material naturally, the particle sizes after crushing are respectively 80-300 mesh, 20-80 mesh and 5-20 mesh;

[0059] Step 2. Select 86 parts of pulverized purple sand ore, including 20 parts of particle size 80-300 mesh, 25 parts of 20-80 mesh, 55 parts of 5-20 mesh; and 12 parts of pore-forming agent and 2 parts of flux Mix in proportion, add water and stir well;

[0060] Step 3, rolling the mixed material into spherical raw meal particles with a diameter of 8 mm;

[0061] Step 4. The spherical raw meal particles are stale at room temperature for 20 hours, and then dried in a drying oven at 105°C for 4 hours;

[0062] St...

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Abstract

The invention discloses a method for preparing lightweight porous ceramsite. Red stoneware mineral aggregate is used as a main raw material, a fixed amount of pore forming agent and fluxing agent is added, and the lightweight porous ceramsite is prepared by crushing, sieving, burdening, mixing, forming, rotting, drying, preheating and high temperature sintering. The lightweight porous ceramsite comprises the following materials in parts by weight: 78-86 parts of red stoneware mineral aggregate, 12-16 parts of pore forming agent and 2-6 parts of fluxing agent, wherein there are 20 parts of 80-300-mesh red stoneware mineral aggregate, 25 parts of 20-80-mesh red stoneware mineral aggregate and 55 parts of 5-20 mesh red stoneware mineral aggregate. The ceramsite prepared by the method disclosed by the invention has the advantages of lower apparent density, higher porosity, higher strength, higher adsorbability, simple preparation process and the like, and can be used as living water purification filtering material, a filtering material of biological aerated filters, an aquaculture water purification filtering material, building material filler, etc.

Description

technical field [0001] The invention belongs to the technical field of household and industrial water body purification and environmental materials, and relates to a method for preparing light porous ceramsite by using purple sand ore. Background technique [0002] Since the early 1990s, the high-efficiency biofilm wastewater treatment process based on biological aerated filter (BAF) has been widely used all over the world. In the BAF process, the performance of the porous biological filter material has a decisive impact on the engineering effect. Porous biological filter materials are divided into two categories: organic and inorganic. The former includes materials such as polystyrene, polyvinyl chloride, and polypropylene. Comes off easily. [0003] In recent years, various solid wastes have been favored as the main materials, and inorganic porous biological ceramsite has been prepared by firing or pressing. The substrates include metal tailings, shale, volcanic rock, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/08C04B38/06C04B33/13C04B33/32C02F3/10
CPCC02F3/107C04B33/13C04B33/32C04B38/0645C04B38/08C04B2235/3206C04B2235/3208C04B2235/77C04B2235/95C04B2235/96C04B38/0074C04B38/0067C04B38/009Y02W10/10
Inventor 张党营王华军
Owner 洛阳逸人紫砂有限公司
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