CN1724110A - Process for preparing porous light filtering material using coal gangue as raw material - Google Patents
Process for preparing porous light filtering material using coal gangue as raw material Download PDFInfo
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- CN1724110A CN1724110A CN200510040291.8A CN200510040291A CN1724110A CN 1724110 A CN1724110 A CN 1724110A CN 200510040291 A CN200510040291 A CN 200510040291A CN 1724110 A CN1724110 A CN 1724110A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 title claims abstract description 12
- 239000002994 raw material Substances 0.000 title claims description 20
- 239000003245 coal Substances 0.000 title abstract description 8
- 238000001914 filtration Methods 0.000 title abstract 2
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 238000005245 sintering Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 21
- 239000000706 filtrate Substances 0.000 claims description 14
- 239000010881 fly ash Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000009628 steelmaking Methods 0.000 claims description 13
- 230000008961 swelling Effects 0.000 claims description 11
- 239000010445 mica Substances 0.000 claims description 8
- 229910052618 mica group Inorganic materials 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 7
- 239000003610 charcoal Substances 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- 239000008188 pellet Substances 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 2
- 238000010348 incorporation Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 239000010865 sewage Substances 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010883 coal ash Substances 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000003723 Smelting Methods 0.000 abstract 1
- 230000001007 puffing effect Effects 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
A process for preparing the light-weight spherical porous filtering material from coal gangue includes such steps as proportionally mixing coal gangue, powdered coal ash, red mud generated by smelting steel and puffing agent, stirring, adding water and shaping agent, granulating, drying, high-temp sintering and natural cooling. Its advantages are no pollution and high properties of product used for treating sewage.
Description
Technical field:
The invention belongs to technical field of waste water processing, being specifically related to a kind of is primary raw material is produced spherical porous light sewage disposal filtrate through high temperature sintering preparation method with the gangue.
Background technology:
Gangue is the waste rock that gives off in the progress of coal mining, and it is a kind of large industrial solid castoff.China's gangue output is about the 15%-20% of raw coal total output, accumulates to reach 7,000,000,000 t, and still with the speed increment of annual emissions 1.5 hundred million t.And gangue year comprehensive utilization ratio still less than 20%, remaining gangue adopts circular cone type or cheuch Dumpage type to be stacked loosely in naturally around the mine more, has both occupied cultivated land, and again environment is polluted.The comprehensive utilization of the gangue spoil except that calorific value＞2000Kcal/kg is used for the generating, and other is usually as repairing the roads, build charges and brickmaking etc.The spoil that can be used in generating only accounts for 5% of total amount, though the making coal gangue brick technology maturation, because of the price of brick is lower, production cost is higher, and added value of product is lower, and commercial value is little, thereby causes a large amount of gangues to pile up.The development and use gangue makes it form high value added product, and is significant.
The sewage disposal biofilter is a kind of aerobe membrane treatment process of apposition growth, and its key is the carrier of biomembrane apposition growth a---filtrate.Filtrate is as microorganism carrier, and the whole process that directly affects microbial growth, breeds and come off influences the water treatment effect.Requirement is to media performance: specific area is big, microorganism colonization is fast, set microbial film amount is many, bioaffinity good, aging biomembrane easily comes off, antiacid alkali, resistance to oxidation, not easily biological-degradable, be difficult for aging, oxygen-transfer efficiency is high, light weight, mechanical strength are big, long service life, low price etc.External filtrate generally adopts the volcanic rock manufacturing, costs an arm and a leg.For example, China introduces Ma Lan river, the Daliang City sewage treatment plant that Germany technology is built, biofilter material 7933m in the mid-90 in 20th century
3, its used filtrate is external import, C.I.F. is 4500 yuan/m
3Thereby, increased construction investment.China's sintering filtrate in the market is mainly with raw material productions such as shale and clays, and behind the one-tenth piece sintering, crushing and screening obtains.Though carrier surface forming biofilm property is good, its shape inequality, intensity difference, easily broken, porosity is little, stop up easily, not water-fast washing away, charge level is uneven after operation a period of time, causes water distribution, gas distribution inhomogeneous, and aeration aerating efficient is low, treatment effect descends.
Summary of the invention:
The invention provides a kind of is primary raw material with the gangue, adds a small amount of swelling agent, prepares light porous sewage disposal filter manufacture method through high temperature sintering.The ball-type filtrate of method manufacturing is specifically designed to water treatment thus.
The concrete preparation process of method provided by the present invention is as follows:
1, the gangue of pulverizing is joined to mix in the mixing kettle by formula ratio and stirred 20-30 minute with flyash, steel-making red mud, the swelling agent of oven dry.
2, mixed raw materials is joined in the tumbling disk granulator, add entry by formula ratio again and forming agent carries out granulation, granularity is controlled at particle diameter 4-8mm, and material time of staying in tumbling disk granulator is 20-40 minute.
3, pellet is joined carry out drying and sintering in the high temperature calcining kiln, baking temperature 300-450 ℃, sintering temperature 1000-1180 ℃, time 60-120 minute, grog is cooling naturally at normal temperatures.
The preferred process conditions of the present invention are: raw material incorporation time 20-30 minute, in the comminutor time of staying 20-40 minute, 60-80 minute drying time in calcining kiln; baking temperature 350-400 ℃; firing time 20-60 minute, sintering temperature 1100-1180 ℃, grog is cooling naturally at normal temperatures.
The raw material proportioning is benchmark with the quality: gangue 65-95%, and flyash 0-25%, steel-making red mud 0-10%, swelling agent 5% adds the liquid molding agent of water and the material quantity 2-3% of material quantity 20-30% in addition.Water and forming agent are mainly used in the powder granulation, are not the compositions of finished product filtrate.Swelling agent in the prescription can be selected any one in waste plastics powder, coke blacking, charcoal powder, carbon black, dicalcium powder, the mica powder, but the present invention recommends to adopt charcoal powder, waste plastics powder and mica powder.Forming agent in the prescription is that concentration is 0.2% polyacrylamide solution.
The light porous spherolite that produces thus can reach the quality requirement as water treatment filter material, and its main physical and chemical parameter is: specific area 6-8.6/m
2/ g, porosity 40-50/%, bulk density 900-1000kg/m
3, wear rate＜2%, average pore size 125-210/ μ m.
Spherical light multiporous biological filtrate of the present invention is a primary raw material with gangue, flyash, steel-making red mud, characteristics such as have rough surface, specific area is big, porosity is high, appearance is hard, and is anticorrosive, wear-resistant.Overcome the shortcoming of traditional filtrate better, main performance index such as its carrier surface forming biofilm property, the distribute water and air uniformity, bulk specific weight, intensity, porosity, specific area all are better than other products.Compare with external product, have the very high ratio of performance to price.
Distinguishing feature of the present invention shows as two aspects, and the one, the product that has the environmental protection industry of higher economic worth with the industrial residue for raw material production.Being the big argument discarded object that produces in coal, electric power, the steel and iron industry production process---gangue, flyash and steel-making red mud provide new outlet, make its biological sewage that becomes high added value handle the filtrate raw materials for production, particularly gangue, utilization of coal ash have realized the purpose of " treatment of wastes with processes of wastes against one another ".On the other hand, can produce the filtrate of appointed product aperture and apparent density easily by the granularity and the consumption of control charcoal powder, waste plastics powder or mica powder.
The specific embodiment:
Embodiment 1:
With gangue, flyash, steel-making red mud, charcoal powder is raw material.Proportioning is: gangue 65g, flyash 25g, steel-making red mud 5g, mica powder 5g.Production process is as follows:
1. with feed coal spoil 65g, flyash 25g, steel-making red mud 5g, mica powder 5g, join respectively and mix 20 minutes in the mixing kettle, the water and the 2mL concentration that add 28mL then are that 0.2% polyacrylamide solution mixes the artificial granulation.
2. pellet is put into temperature and is 400 ℃ sintering furnace, insulation oven dry 60 minutes, the sintering that heats up then is expanded.When being warmed up to 1180 ℃, be incubated 8 minutes.
3. after coming out of the stove, the haydite that sinters naturally cools to room temperature.
The difference of embodiment 2,3 and embodiment 1 is that the consumption of flyash reduces, and all the other raw material consumptions are constant, and operating condition is constant.Embodiment 4 increases no flyash with the difference of embodiment 1 for steel-making red mud consumption.Embodiment 5 is that raw material is a gangue with the difference of embodiment 1, does not have flyash and steel-making red mud, and all the other are constant.Embodiment 3 swelling agents change charcoal powder into by mica powder, and embodiment 4 swelling agents change the waste plastics powder into by mica powder, and raw material consumption and operating condition are all constant, and be identical with embodiment 1.The raw material proportioning of embodiment 1-5 sees Table 1, and the physical and chemical index of corresponding product sees Table 2.
The consumption of different material in table 1 example (material quantity 100g)
| The embodiment numbering | Gangue/g | Flyash/g | Steel-making red mud/g | Swelling agent/g | Water/mL | Forming agent/mL |
| 1 | 65 | 25 | 5 | 5 | 28 | 2 |
| 2 | 75 | 15 | 5 | 5 | 28 | 2 |
| 3 | 85 | 5 | 5 | 5 | 28 | 2 |
| 4 | 85 | 0 | 10 | 5 | 28 | 2 |
| 5 | 95 | 0 | 0 | 5 | 28 | 2 |
The product physical and chemical index of table 2 different ratios of raw materials examples produce
| The embodiment numbering | Apparent density/kg/m 3 | Bulk density/kg/m 3 | Porosity/% | Specific area/m 2/g | Wear rate/% | Average pore size/μ m |
| 1 | 1.21 | 0.914 | 23.8 | 6.35 | ＜2％ | 210 |
| 2 | 1.78 | 0.899 | 49.5 | 7.53 | ＜2％ | 125 |
| 3 | 1.81 | 0.926 | 48.1 | 8.12 | ＜2％ | 175 |
| 4 | 1.60 | 0.927 | 45.1 | 8.64 | ＜2％ | 180 |
| 5 | 1.86 | 1.02 | 54.8 | 8.06 | ＜2％ | 200 |
Claims (4)
1, a kind of is the method for feedstock production spherical porous light filtrate with the gangue, it is characterized in that it is a primary raw material with gangue, flyash and steel-making red mud, adds a small amount of forming agent, swelling agent, forms through mixing, granulation, drying and high temperature sintering; The quality proportioning of described raw material and each component is: gangue 65-95%, and flyash 0-25%, steel-making red mud 0-10%, swelling agent 5% add the liquid molding agent of water and the material quantity 2-3% of material quantity 20-30% in addition; Concrete preparation process is as follows:
1. the gangue of pulverizing is joined to mix in the mixing kettle by formula ratio and stirred 20-30 minute with flyash, steel-making red mud, the swelling agent of oven dry;
2. mixed raw materials is joined in the tumbling disk granulator, add entry by formula ratio again and forming agent carries out granulation, granularity is controlled at particle diameter 4-8mm, and material time of staying in tumbling disk granulator is 20-40 minute;
3. pellet is joined and carry out drying and sintering in the high temperature calcining kiln, time 60-120 minute, baking temperature 300-450 ℃, sintering temperature 1000-1180 ℃, grog is cooling naturally at normal temperatures.
2,, it is characterized in that described swelling agent is according to the described method of claim 1: in charcoal powder, waste plastics powder and the mica powder any one.
3, according to the described method of claim 1, the described forming agent of its feature is: concentration is 0.2% polyacrylamide solution.
4, according to the described method of claim 1; it is characterized in that its process conditions are: raw material incorporation time 20-30 minute; in the comminutor time of staying 20-40 minute; 60-80 minute drying time in calcining kiln; baking temperature 350-400 ℃; firing time 20-60 minute, sintering temperature 1100-1180 ℃, grog is cooling naturally at normal temperatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510040291.8A CN1724110A (en) | 2005-05-30 | 2005-05-30 | Process for preparing porous light filtering material using coal gangue as raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510040291.8A CN1724110A (en) | 2005-05-30 | 2005-05-30 | Process for preparing porous light filtering material using coal gangue as raw material |
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| Publication Number | Publication Date |
|---|---|
| CN1724110A true CN1724110A (en) | 2006-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510040291.8A Pending CN1724110A (en) | 2005-05-30 | 2005-05-30 | Process for preparing porous light filtering material using coal gangue as raw material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265190A (en) * | 2013-05-04 | 2013-08-28 | 滕州市东郭水泥有限公司 | Technology and equipment for treating waste water and waste liquid by JT kiln of cement mill |
| CN104069690A (en) * | 2014-04-11 | 2014-10-01 | 内蒙古大学 | Zeolite ceramisite filter material prepared by gangue and preparation method of zeolite ceramisite filter material |
| CN104759152A (en) * | 2015-03-18 | 2015-07-08 | 蚌埠首创滤清器有限公司 | Wear-resistant composite filter material prepared by blending melt-blown polypropylene with modified fly ash and used for sewage treatment and preparation method thereof |
| CN104759146A (en) * | 2015-03-18 | 2015-07-08 | 蚌埠德美过滤技术有限公司 | High-adsorbability composite filter material prepared by blending melt-blown polypropylene with modified attapulgite and used for sewage treatment and preparation method thereof |
| CN105688507A (en) * | 2016-01-28 | 2016-06-22 | 沈阳建筑大学 | Sintering method of coal gangue modified porous lightweight filtering material |
| CN105999850A (en) * | 2016-07-08 | 2016-10-12 | 吴印强 | Efficient composite carborundum filter material and preparing method and application thereof |
| CN107573094A (en) * | 2017-09-11 | 2018-01-12 | 蒙娜丽莎集团股份有限公司 | A kind of micropore ceramic filtration medium for hot environment and preparation method thereof |
-
2005
- 2005-05-30 CN CN200510040291.8A patent/CN1724110A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265190A (en) * | 2013-05-04 | 2013-08-28 | 滕州市东郭水泥有限公司 | Technology and equipment for treating waste water and waste liquid by JT kiln of cement mill |
| CN103265190B (en) * | 2013-05-04 | 2016-03-23 | 滕州市东郭水泥有限公司 | Utilize cement mill JT kiln process waste water and waste liquid Processes and apparatus |
| CN104069690A (en) * | 2014-04-11 | 2014-10-01 | 内蒙古大学 | Zeolite ceramisite filter material prepared by gangue and preparation method of zeolite ceramisite filter material |
| CN104069690B (en) * | 2014-04-11 | 2016-06-15 | 内蒙古大学 | A kind of utilize coal gangue to prepare zeolite ceramsite filtrate and its preparation method |
| CN104759152A (en) * | 2015-03-18 | 2015-07-08 | 蚌埠首创滤清器有限公司 | Wear-resistant composite filter material prepared by blending melt-blown polypropylene with modified fly ash and used for sewage treatment and preparation method thereof |
| CN104759146A (en) * | 2015-03-18 | 2015-07-08 | 蚌埠德美过滤技术有限公司 | High-adsorbability composite filter material prepared by blending melt-blown polypropylene with modified attapulgite and used for sewage treatment and preparation method thereof |
| CN105688507A (en) * | 2016-01-28 | 2016-06-22 | 沈阳建筑大学 | Sintering method of coal gangue modified porous lightweight filtering material |
| CN105999850A (en) * | 2016-07-08 | 2016-10-12 | 吴印强 | Efficient composite carborundum filter material and preparing method and application thereof |
| CN105999850B (en) * | 2016-07-08 | 2019-01-29 | 河北银达环保科技有限公司 | High efficiency composition Buddha's warrior attendant sand filtering material and its preparation method and application |
| CN107573094A (en) * | 2017-09-11 | 2018-01-12 | 蒙娜丽莎集团股份有限公司 | A kind of micropore ceramic filtration medium for hot environment and preparation method thereof |
| CN107573094B (en) * | 2017-09-11 | 2020-04-07 | 蒙娜丽莎集团股份有限公司 | Microporous ceramsite filter medium for high-temperature environment and preparation method thereof |
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