CN105693277B - A kind of iron tailings porous material and its preparation method and application as microorganism ceramic grain filter - Google Patents
A kind of iron tailings porous material and its preparation method and application as microorganism ceramic grain filter Download PDFInfo
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Abstract
The present invention is a kind of iron tailings porous material and its preparation method and application as microorganism ceramic grain filter.The material includes the microorganism of iron tailings porous material and porous material loading；The raw material of the porous material forms and its mass percent is as follows, iron tailings：65‑85%；Clay：6‑19%；Pore creating material：4‑12%；Calcium carbonate：1‑6%.The sum of each component mass percent is 100%.The iron tailings porous material as microorganism ceramic grain filter of the present invention, porosity can reach is more than 5.0m more than 40%, specific surface area2/ g, crushing force are less than 0.8kN；Again by optimizing loading microorganisms technique, it is 60% or more that the iron tailings porous material as microorganism ceramic grain filter prepared reaches COD removal rates to the degradation effect of organic matter.
Description
Technical field
The invention belongs to ceramic grain filter fields, and in particular to a kind of iron tailings porous material being used as microorganism ceramic grain filter
And its preparation method and application.
Background technology
The development of steel and iron industry so that the accumulating amount cumulative year after year of iron ore tailings has developed foundation according to incompletely statistics
More than 8000, mine, accumulation tailing total amount be up to 19.7 hundred million tons.These tailings are mostly taken as waste to be stacked at for a long time
In Tailings Dam, a large amount of agriculture, woods soil are not occupied, but also destroy forest, landforms, vegetation and natural landscape, led
Cause soil erosion, the deterioration of the ecological environment.For more scientifically and rationally sustainable development, development of resources should be coordinated with environmental protection
Altogether into, therefore, greatly develop the comprehensive utilization of resource of tailings, to ecological environment, improve resource utilization it is particularly important.
The digestibility and utilization of iron tailings mainly in building materials, pave the way, in terms of the productions such as cement, refractory material, but due to iron tail
Mine complicated component, simple processing directly can't reach the effect of substituting current material completely using in aspect of performance.Such as with
Iron tailings is that aggregate makes air entrained concrete hollow brick, since building rule are not achieved in intensity, water absorption rate, background color infiltration etc.
Model standard and cannot function as normal construction material and use；It mixes with clay, gravel grain soil etc. as roadbed filling of building the road, due to
In water stability, weathering and plasticity etc., there is defects, and the highway that cannot act as normal level uses, thus make iron
The recycling recycling of tailing is restricted.
In recent years, there is research to pass through certain processing and processing using iron tailings as major ingredient, ceramic material is made for being catalyzed
Carrier, ceramic sanitary appliance, foamed ceramics etc. make some progress, such as Chinese invention patent《It is a kind of to prepare iron tailings
At the method for preparing ceramic clinker glaze》(CN201210587572.5) a kind of side that iron tailings is prepared into preparing ceramic clinker glaze is proposed
Method makees raw material with iron tailings, without adding other ceramic pigments or colorant other than iron, prepares ceramic color glaze；Chinese patent
《A kind of iron tailings far-infrared ceramic material and preparation method thereof》(CN201410210975.7) it is far red that a kind of iron tailings is disclosed in
Outer ceramic material and preparation method thereof is that ceramics are made after processing and sintering using materials such as iron tailings, clay, silica
Material, as far-infrared ceramic material；And Chinese patent《A kind of iron tailings porous ceramic film material and preparation method thereof》
(CN201410211221.3) a kind of iron tailings porous ceramic film material and preparation method thereof is disclosed in, is to utilize iron tailings, oxidation
Porous ceramic film material is made in the materials such as aluminium, silica, titanium dioxide.The above published patent or technology are related to iron tailings
Preparation in ceramic glaze, ceramics, porous ceramics, porous material etc. and application technology.The present invention is used as using iron tailings preparation
Iron tailings porous material of microorganism ceramic grain filter and preparation method thereof and industrial organic waste water processing on apply, the prior art
In not yet appear in the newspapers.
Invention content
It is an object of the invention to propose a kind of iron tailings porous material as microorganism ceramic grain filter.The material with
Iron tailings is primary raw material, by various raw material grindings, material mixing, molding, drying, sintering, by lower sintering temperature and compared with
Short sintering time has obtained porous material, then again by loading microorganisms, has obtained being used as the filter of microorganism haydite
The iron tailings porous material of material.The material of the present invention is applied to industrial organic waste water and handles, and has a good application prospect, can be with
Achieve the purpose that waste recycling, is of great significance to environmental protection.
The technical scheme is that
A kind of iron tailings porous material as microorganism ceramic grain filter, the material include iron tailings porous material and more
The microorganism of hole material load；
The raw material of the porous material forms and its mass percent is as follows：
The sum of each component mass percent is 100%；
The method of the load of microorganisms on the porous material, includes the following steps：
By microorganism fungus kind after course of cultivating the microorganism, microorganism basis bacterium solution is obtained, with distilled water by micro- life at 25 DEG C
Object basis bacterium solution dilutes 10-100 times, obtains dilution bacterium solution；Iron tailings porous material is dried into 1h, natural cooling at 50 DEG C again
It is taken out after to room temperature after immersing dilution bacterium solution for 24 hours, taking-up leaching is dry to place in the cool, and humidity is sprayed to dilution bacterium solution per 12h,
The iron tailings porous material as microorganism ceramic grain filter is obtained after 7-15 days.
The chemical composition of the iron tailings includes SiO2For 60-75%, TFe 8-14%.
The clay is one kind in attapulgite, kaolinite, specific surface area 15-30m2/ g, granularity are less than 200 purposes
Powder；
The pore creating material is one kind in coal dust, powdered carbon, starch, bulk density 0.75-0.85t/m3, granularity is less than
The powder of 200 mesh；
The calcium carbonate is commercially available technical grade powder calcium carbonate；
The microorganism is one or more of strains such as dynamic glue bacterium, pseudomonad, football shirt bacterium and bayesian sulphur bacterium,
The course of cultivating the microorganism includes multistage expansion, nutrition cultivation and organic matter domestication.
The preparation method of the iron tailings porous material as microorganism ceramic grain filter, includes the following steps：
(1) iron tailings is less than 200 mesh through ball mill grinding to granularity；
(2) according to the above quality proportioning, iron tailings, clay, pore creating material and calcium carbonate, each component quality hundred are weighed respectively
It is 100% to divide the sum of ratio, later the honed 200 mesh sieve of mixed powder；
(3) add water in the mixed powder after grinding sieving, uniform stirring 30min, through comminutor granulating and forming, grain size is
3-5mm；
(4) spherolite for obtaining upper step in the case where room temperature and humidity are 50-70%RH it is aging for 24 hours after, be put into baking oven,
At 90-120 DEG C, dry 2-3h；
(5) spherolite after drying is put into sintering furnace again, calcines 1-2h at 800-1100 DEG C, cools to room temperature with the furnace
After can be prepared by iron tailings porous material；Calcining heating rate is 2.0-3.0 DEG C/min；
(6) by microorganism fungus kind after course of cultivating the microorganism, microorganism basis bacterium solution is obtained, it will be micro- with distilled water at 25 DEG C
Biological basis bacterium solution dilutes 10~100 times, obtains dilution bacterium solution；Iron tailings porous material is dried into 1h at 50 DEG C again, it is natural
It is taken out after being cooled to room temperature after immersing dilution bacterium solution for 24 hours, taking-up leaching is dry to place in the cool, is sprayed to dilution bacterium solution per 12h
Humidity can be obtained the iron tailings porous material as microorganism ceramic grain filter after 7-15 days.
The application of the iron tailings porous material as microorganism ceramic grain filter, can be applied at industrial organic waste water
Reason.
Beneficial effects of the present invention
The present invention prepares the iron tailings porous material as microorganism ceramic grain filter using iron tailings, by adjusting raw material powder
The technical process such as mill, material mixing, molding, drying, sintering and loading microorganisms, the iron tail as microorganism ceramic grain filter prepared
Mine porous material, porosity can reach is more than 5.0m more than 40%, specific surface area2/ g, crushing force are less than 0.8kN；Pass through again
Optimize loading microorganisms technique, the iron tailings porous material as microorganism ceramic grain filter prepared imitates the degradation of organic matter
It is 60% or more that fruit, which reaches COD removal rates,.It provides before a kind of solution iron tailings recycling recycles, prepares and have good development
The new way of the organic wastewater degraded material of scape.
Description of the drawings
For the clearer elaboration purpose of the present invention, technical solution and feature, below in conjunction with the accompanying drawings to the present invention make into
The detailed description of one step.
Fig. 1 is the SEM photograph of the iron tailings porous material prepared in the embodiment of the present invention 1；
Fig. 2 is drying and the sintering temperature curve of the iron tailings porous material prepared in the embodiment of the present invention 1.
Specific implementation mode
Technical scheme of the present invention is described further below in conjunction with specific embodiment.
Iron tailings of the present invention is high-silicon type iron tailings, and wherein metalliferous mineral includes mainly magnetic iron ore, bloodstone and vacation
As bloodstone, gangue mineral includes mainly quartz, is secondly chlorite, calcite and hornblend；In iron tailings chemical composition
SiO2For 60-75%, TFe 8-14%.
Embodiment 1
A kind of iron tailings porous material as microorganism ceramic grain filter, the material include iron tailings porous material and more
The microorganism of hole material load；
The raw material of the porous material forms and its mass percent is as follows：
The iron tailings porous material and its preparation method and application as microorganism ceramic grain filter described in the present embodiment,
The iron tailings used is the SiO for originating from Chengde mining area2The iron tailings powder that content is 70%；Attapulgite is commercially available hydrous magnesium
Aluminium silicate mineral, specific surface area 30m2/g；Calcium carbonate is commercially available solid powder, coal dust is bulk density 0.80t/m3City
Sell product.
The preparation method of the iron tailings porous material as microorganism ceramic grain filter of the present embodiment, including following technique step
Suddenly：
(1) iron tailings is milled to granularity through ball mill and is less than 200 mesh；
(2) iron tailings, attapulgite, coal dust, calcium carbonate are weighed respectively by the mass percent of above-mentioned each primary raw material, it will
Ball milling after each component mixing crosses 200 mesh sieve；
(3) water, uniform stirring 30min is added to be granulated through comminutor, at spherolite in the above-mentioned mixed powder after ball milling sieving
Diameter is 3-5mm；
(4) spherolite obtained in " step (3) " is aging in the case where room temperature and humidity are 55%RH (relative humidity) (aging just
That mixed pug is placed into certain time under specific temperature and specified moisture) for 24 hours after, be put into baking oven at 90 DEG C, do
Dry 3h；
(5) spherolite after drying is put into sintering furnace again, 2h is calcined at 900 DEG C, after cooling to room temperature with the furnace
Obtain iron tailings porous material.
It takes commercially available football shirt bacterium dry strain 1g to be dissolved in 1L distilled water, and beef extract 1g, glucose 10g, urea 5g is added,
72h is cultivated, the domestication of 20mg/L polyvinyl alcohol is first added for 24 hours, the domestication of 80mg/L polyvinyl alcohol is added for 24 hours, by the bacterium after domestication
Liquid dilutes 50 times, then 10kg iron tailings porous material is dried 1h at 50 DEG C, is taken out after cooled to room temperature and immerses dilution
Bacterium solution takes out the dry placement of leaching in the cool afterwards for 24 hours, is sprayed to humidity with dilution bacterium solution per 12h, loading microorganisms are made after 10 days
Iron tailings porous filter-material.
Fig. 1 is the SEM photograph of iron tailings porous material, as can be seen that porous material surface macropore is nested with from photo
Large quantity micropore is in spongy, is conducive to loading microorganisms.
Fig. 2 is drying and the sintering temperature curve of iron tailings porous material, and the dry temperature for preparing porous material is indicated in figure
Degree is 90-120 DEG C, drying time 2-3h, and sintering temperature is 800-1100 DEG C, sintering time 1-2h.
It by the iron tailings porous material obtained for microorganism, is detected through thermal conductivity method TCD, porosity 44.00%, ratio
Surface area is 6.5m2/ g, crushing force 0.78kN；Air-blowing will be carried for the iron tailings porous filter-material 1000g filling of microorganism
In circulator, the cylindricality reactor that capacity is 50L, gas-water ratio 10:1, rate of circulating flow is controlled in 0.2m/s.Industry is organic
Waste water is derived from waste water in Tianjin chemicals production enterprise biochemical treatment tank, is 496mg/ through chromium forensic chemistry oxygen demand (COD) value
L.It is 182mg/L by 30min tests COD value, be 158mg/L by 60min tests COD value, tests COD value by 90min
For 126mg/L, COD removal rates are 74.6.0%.
Embodiment 2
Difference lies in the mass percents of iron tailings and each raw material to be for the present embodiment and embodiment 1：
The iron tailings porous material and its preparation method and application as microorganism ceramic grain filter described in the present embodiment,
The iron tailings used is the SiO for originating from Chengde mining area2The iron tailings powder that content is 75%；Kaolinite is commercially available tcrude ore；
Calcium carbonate is commercially available solid powder, carbon dust is bulk density 0.85t/m3Commercial product.
The iron tailings porous material and its preparation method and application as microorganism ceramic grain filter of the present embodiment, including with
Lower processing step：
(1) iron tailings is milled to granularity through ball mill and is less than 200 mesh；
(2) iron tailings, kaolinite, carbon dust, calcium carbonate are weighed respectively by the mass percent of above-mentioned each primary raw material, it will be each
Ball milling after component mixing crosses 200 mesh sieve；
(3) water, uniform stirring 30min is added to be granulated through comminutor, at spherolite in the above-mentioned mixed powder after ball milling sieving
Diameter is 3-5mm；
(4) by the spherolite obtained in " step (3) " in the case where room temperature and humidity are 60%RH it is aging for 24 hours after, be put into baking oven and exist
At 100 DEG C, dry 2.5h；
(5) spherolite after drying is put into sintering furnace again, 1.5h is calcined at 1000 DEG C, cooled to the furnace after room temperature i.e.
It can obtain the iron tailings porous material as microorganism ceramic grain filter.
It takes commercially available football shirt bacterium dry strain 1g to be dissolved in 1L distilled water, and beef extract 1g, glucose 10g, urea 5g is added,
72h is cultivated, the domestication of 20mg/L polyvinyl alcohol is first added for 24 hours, the domestication of 80mg/L polyvinyl alcohol is added for 24 hours, by the bacterium after domestication
Liquid dilutes 50 times, then 10kg iron tailings porous material is dried 1h at 50 DEG C, is taken out after cooled to room temperature and immerses dilution
Bacterium solution takes out the dry placement of leaching in the cool afterwards for 24 hours, is sprayed to humidity with dilution bacterium solution per 12h, loading microorganisms are made after 10 days
Iron tailings porous filter-material.
It by the iron tailings porous material obtained for microorganism, is detected through thermal conductivity method TCD, porosity 40.00%, ratio
Surface area is 5.5m2/ g, crushing force 0.79kN；Air-blowing will be carried for the iron tailings porous filter-material 1000g filling of microorganism
In circulator, the cylindricality reactor that capacity is 50L, gas-water ratio 10:1, rate of circulating flow was controlled in 0.2m/s, processing time
For 20h, industrial organic waste water is derived from waste water in Tianjin chemicals production enterprise biochemical treatment tank similarly to Example 1, through chromium
Forensic chemistry oxygen demand (COD) value is 496mg/L.It is 385mg/L by 30min tests COD value, is by 60min tests COD value
251mg/L, it is 175.6mg/L by 90min test COD values, COD removal rates are 64.6.0%.
Unaccomplished matter of the present invention is known technology.
Claims (3)
1. a kind of iron tailings porous material as microorganism ceramic grain filter, it is characterized in that the material includes iron tailings porous material
And the microorganism of porous material loading；
The raw material of the iron tailings porous material forms and its mass percent is as follows：
The sum of each component mass percent is 100%；
The method of the load of microorganisms on the porous material, includes the following steps：
By microorganism fungus kind after course of cultivating the microorganism, microorganism basis bacterium solution is obtained, with distilled water by microorganism base at 25 DEG C
Plinth bacterium solution dilutes 10-100 times, obtains dilution bacterium solution；Iron tailings porous material is dried into 1h at 50 DEG C again, naturally cools to room
It is taken out after temperature after immersing dilution bacterium solution for 24 hours, taking-up leaching is dry to place in the cool, and humidity, 7-15 are sprayed to dilution bacterium solution per 12h
The iron tailings porous material as microorganism ceramic grain filter is obtained after it.
The chemical composition of the iron tailings includes SiO2For 60-75%, TFe 8-14%；
The clay is one kind in attapulgite, kaolinite, specific surface area 15-30m2/ g, granularity are less than the powder of 200 mesh；
The pore creating material is one kind in coal dust, powdered carbon, starch, bulk density 0.75-0.85t/m3, granularity be less than 200 purposes
Powder.
The microorganism is one or more of strains such as dynamic glue bacterium, pseudomonad, football shirt bacterium and bayesian sulphur bacterium；
The preparation method of the iron tailings porous material as microorganism ceramic grain filter, it is characterized in that including the following steps：
(1) iron tailings is less than 200 mesh through ball mill grinding to granularity；
(2) according to the above quality proportioning, iron tailings, clay, pore creating material and calcium carbonate, each component mass percent are weighed respectively
The sum of be 100%, mixed powder honed 200 mesh sieve later；
(3) in the mixed powder after grinding sieving plus water, uniform stirring 30min, through comminutor granulating and forming, grain size is 3~
5mm；
(4) spherolite for obtaining upper step in the case where room temperature and humidity are 50-70%RH it is aging for 24 hours after, be put into baking oven, in 90-120
At DEG C, dry 2-3h；
(5) spherolite after drying is put into sintering furnace again, 1-2h is calcined at 800-1100 DEG C, cooled to the furnace after room temperature i.e.
Iron tailings porous material can be made；Calcining heating rate is 2.0-3.0 DEG C/min；
(6) by microorganism fungus kind after course of cultivating the microorganism, microorganism basis bacterium solution is obtained, with distilled water by microorganism at 25 DEG C
Basic bacterium solution dilutes 10~100 times, obtains dilution bacterium solution；Iron tailings porous material is dried into 1h, natural cooling at 50 DEG C again
It is taken out after to room temperature after immersing dilution bacterium solution for 24 hours, taking-up leaching is dry to place in the cool, and humidity is sprayed to dilution bacterium solution per 12h,
It can be obtained the iron tailings porous material as microorganism ceramic grain filter after 7-15 days；
The course of cultivating the microorganism includes multistage expansion, nutrition cultivation and organic matter domestication.
2. being used as the iron tailings porous material of microorganism ceramic grain filter as described in claim 1, it is characterized in that the calcium carbonate
For commercially available technical grade powder calcium carbonate.
3. the application of the iron tailings porous material as microorganism ceramic grain filter as described in claim 1, it is characterized in that can apply
In industrial organic waste water processing.
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| CN106431490B (en) * | 2016-09-13 | 2019-02-19 | 淮阴师范学院 | A method of porous supporting body is prepared using low-grade attapulgite clay |
| CN106517840B (en) * | 2016-09-18 | 2018-11-20 | 佛山科学技术学院 | The method for preparing cement additive as raw material using aluminium surface processing solid waste |
| CN107673738A (en) * | 2017-10-20 | 2018-02-09 | 武汉钢铁有限公司 | A kind of iron ore tailings haydite and preparation method |
| CN109734416A (en) * | 2018-12-06 | 2019-05-10 | 咸阳陶瓷研究设计院有限公司 | A kind of foamed ceramic and its preparation process |
| CN110128105A (en) * | 2019-04-04 | 2019-08-16 | 河北工业大学 | Iron tailings based black solar energy heat absorbing ceramics and preparation method thereof |
| CN110201204B (en) * | 2019-07-19 | 2020-11-10 | 兰州理工大学 | Biological deodorant carrier and preparation method thereof, and biological deodorant and preparation method thereof |
| TWI717053B (en) * | 2019-10-14 | 2021-01-21 | 國立臺灣大學 | A novel porous biochar ceramsite and preparing methods thereof |
| CN111760381A (en) * | 2020-06-10 | 2020-10-13 | 昆明理工大学 | Method for preparing filter material by using copper tailings and application |
| CN113860908A (en) * | 2021-08-20 | 2021-12-31 | 科盛环保科技股份有限公司 | Preparation method of porous biological filter material for biological aerated filter |
| CN114368961B (en) * | 2022-01-27 | 2023-01-20 | 中钢集团马鞍山矿山研究总院股份有限公司 | Preparation method and new application of iron tailing ceramic filter material |
| CN115010508B (en) * | 2022-05-26 | 2023-05-23 | 中南大学 | Method for preparing ceramsite green body from iron tailings and coal gangue |
| CN116768649A (en) * | 2023-06-26 | 2023-09-19 | 中国科学院过程工程研究所 | Iron tailing-based soil improvement material and preparation method thereof |
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