CN106747593A - A kind of method that utilization sludge prepares haydite with building castoff - Google Patents
A kind of method that utilization sludge prepares haydite with building castoff Download PDFInfo
- Publication number
- CN106747593A CN106747593A CN201611045203.8A CN201611045203A CN106747593A CN 106747593 A CN106747593 A CN 106747593A CN 201611045203 A CN201611045203 A CN 201611045203A CN 106747593 A CN106747593 A CN 106747593A
- Authority
- CN
- China
- Prior art keywords
- sludge
- building castoff
- powder
- haydite
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/009—Porous or hollow ceramic granular materials, e.g. microballoons
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/0675—Vegetable refuse; Cellulosic materials, e.g. wood chips, cork, peat, paper
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention discloses a kind of method that utilization sludge and building castoff prepare haydite, first by the sludge water of sewage treatment plant in settling tank quiescent settling, settling tank bottom produces thickened sludge water, it is delivered to Pulp pump standby in storage tank, building castoff is standby after crushing, and then both raw materials mix according to the proportioning of certain part by weight.Mechanical agitation is carried out to mixture, then pre- homogenizing, ripening, add pore creating material and be uniformly mixed so as to obtain powder, and powder is dried, and powder is generated into raw material ball with comminutor, are re-sintered after raw material ball is dried, and most obtain haydite through natural cooling afterwards.This method does not need deep dehydration when sludge is processed, quiescent settling is only needed to, is conveyed using Pulp pump, reduce the pollution to environment, and provide calorific value using the organic matter in sludge, flyash need not be added, the haydite of generation has lightweight, high-strength, thermal conductivity factor is low, the features such as water absorption rate is big, preparation method, process is simple, easily operation.
Description
Technical field
The present invention relates to a kind of method for preparing haydite, more particularly to one kind haydite is prepared using sludge and building castoff
Method.
Background technology
Sludge from wastewater treatment plant is by organic matter, inorganic particle, colloid, heavy metal and persistent organism and micro- life
Thing etc. is constituted, if not being acted upon polluting environment using meeting.Building waste discharge capacity is very big, thing followed environment
Problem becomes increasingly conspicuous.
Mainly include landfill, burning electricity generation currently for the technology that recycling sludge is processed, prepare activated carbon, biogas profit
With etc..The technology for preparing haydite using sludge exists《A kind of method that utilization city sewage and sludge prepares haydite》(Application No.
201410376033.6) and《A kind of utilization sewage plant sludge prepares the technology of haydite》(Application No. 201110393011.7)
Mentioned in patent document, above-mentioned two patent documents describe two kinds of technologies that haydite is prepared using sludge, however it is necessary that right
Sludge is dehydrated and is added coal ash lifting heat supply value, and complex process greatly improves the cost for preparing haydite.
The invention discloses a kind of method that utilization sludge and building castoff prepare haydite.Sludge water only need to be by static
Precipitation, takes bottom thickened sludge water, and moisture content need to be only controlled in 90-95%, it is possible to use Pulp pump mode of movement, it is to avoid
The environmental pollution that other mode of movements are caused.Calorific value is provided using the organic matter in sludge, without adding flyash, and is led to
Cross the intensity that addition building castoff greatly improves haydite.Sludge is realized uniformly to mix with building castoff；Both energy-conserving and environment-protective,
Two kinds of higher value applications of solid waste are realized again.Extensively, process is simple is with low cost for required raw material sources.The ceramic product of preparation
Can as the filler of insulation material, or water process, atmospheric treatment, soil remediation etc. pollutant sorbing material.
The content of the invention
It is an object of the invention to provide a kind of method that utilization sludge and building castoff prepare haydite, the method is in treatment
Deep dehydration is not needed during sludge, and calorific value is provided using the organic matter in sludge, without adding flyash, and by adding
Plus building discarded object greatly improves the intensity of haydite.
In order to achieve the above object, using following technical scheme：The raw materials used sludge water including sewage treatment plant's generation
And building castoff, comprise the following steps：
(1) sludge water that sewage treatment plant produces forms thickened sludge in settling tank through quiescent settling in settling tank bottom
Water；
(2) building castoff carries out break process；
(3) mixing the sludge formed through step (1) and the broken building castoff of step (2) by certain proportioning is carried out
Mechanical agitation, pre- homogenizing treatment is carried out by the mixture after stirring, then carries out ripening；
(4) mixture adds pore creating material to mix after being aged, and obtains powder；
(5) powder described in step (4) is dried, raw material ball is generated with haydite comminutor, by raw material ball drying machine
Sintering in sintering oven is sent into after drying, haydite is obtained final product after natural cooling.
Further, the thickened sludge water moisture control in step (1) is in 90%-95%.
Further, to particle diameter for 60-70 targeted fine powders account for more than 50%, remaining particle diameter exists step (3) Particle Breakage
Below 1mm.
Further, necessarily matched in step (4) and be：Sludge 70-90 weight portions, building castoff 10-30 weight portions；
Pre- homogenizing process time is 6-12h, and digestion time is 12-24h.Pore creating material is stalk or sawdust, and addition is 0.01-0.1 weights
Amount part.
Further, powder drying to moisture content is 10%-25%, the raw material ball warp of comminutor generation in step (5)
Drying machine drying to moisture content is 5%-8%, and the preheating time of the sintering oven is 10-20min, and preheating temperature is 450-650
DEG C, the time of sintering is 5-10min, and the temperature of sintering is 850-1050 DEG C.The raw material ball particle diameter of comminutor generation is 5-20mm.
Specific embodiment
Describe in detail by the following examples or describe the present invention, rather than limiting the invention.
By Sewage Plant effluent sewerage by after settling tank quiescent settling, being sent settling tank bottom thickened sludge with pumping with pump
It is standby in storage tank, building castoff is crushed standby.By the above two raw material after treatment according to certain part by weight proportioning
Mixing.Through mechanical agitation, then through pre- homogenizing, ripening, the mixture after treatment adds certain mixed mixture
The pore creating material of weight portion is uniformly mixed so as to obtain powder, and powder is dried, and powder is molded into generation raw material ball with comminutor, and raw material ball is done
Re-sintered after dry, most obtain haydite through natural cooling afterwards.Haydite is, by high-temperature roasting, to be formed through expanded, is a kind of condensation soil
Lightweight aggregate, due to being that in alveolate texture, thus with lightweight, high-strength, thermal conductivity factor is low inside it, the features such as water absorption rate is big.
Here pre- homogenization operation technology is used, mixture is well mixed after the mixture after stirring is placed into certain hour.
Embodiment 1
(1) after sludge of sewage treatment plant water is through settling tank quiescent settling, it is 90%- to obtain moisture content in settling tank bottom
, be delivered to thickened sludge water in storage tank with Pulp pump by 95% thickened sludge water, standby.
(2) building castoff accounts for more than 50% through being crushed to particle diameter 60-70 targeted fine powders, remaining particle diameter in below 1mm,
It is standby.
(3) building castoff of the sludge of 70 weight portions and 30 weight portions is mixed through mechanical agitation, the mixing after stirring
Thing is through pre- homogenizing treatment 6h, then aged treatment 12h.
(4) mixture after aging adds the sawdust pore creating material of 0.01 weight portion to mix, and obtains powder.
(5) it is 10-25% by the powder drying in (4) to moisture content, is molded with comminutor, raw material ball particle diameter 5-20mm,
With drying machine drying to moisture content it is 5-8% by it, is sent in sintering oven, preheating time is 10min, and preheating temperature is
450 DEG C, sintering time is 5min, and sintering temperature is 850 DEG C, and haydite is obtained after natural cooling.
Embodiment 2
(1) after sludge of sewage treatment plant water is through settling tank quiescent settling, it is 90%- to obtain moisture content in settling tank bottom
, be delivered to thickened sludge in storage tank with Pulp pump by 95% thickened sludge, standby.
(2) building castoff accounts for more than 50% through being crushed to particle diameter 60-70 targeted fine powders, remaining particle diameter in below 1mm,
It is standby.
(3) building castoff of the sludge of 80 weight portions and 20 weight portions is mixed through mechanical agitation, the mixing after stirring
Thing is through pre- homogenizing treatment 8h, then aged treatment 20h.
(4) mixture after aging adds the sawdust pore creating material of 0.05 weight portion to mix, and obtains powder.
(5) it is 10-25% by the powder drying in (4) to moisture content, is molded with comminutor, raw material ball particle diameter 5-20mm,
With drying machine drying to moisture content it is 5-8% by it, is sent in sintering oven, preheating time is 15min, and preheating temperature is
550 DEG C, sintering time is 8min, and sintering temperature is 900 DEG C, and haydite is obtained after natural cooling.
Embodiment 3
(1) after sludge of sewage treatment plant water is through settling tank quiescent settling, it is 90%- to obtain moisture content in settling tank bottom
, be delivered to thickened sludge in storage tank with Pulp pump by 95% thickened sludge, standby.
(2) building castoff accounts for more than 50% through being crushed to particle diameter 60-70 targeted fine powders, remaining particle diameter in below 1mm,
It is standby.
(3) building castoff of the sludge of 90 weight portions and 10 weight portions is mixed through mechanical agitation, the mixing after stirring
Thing is through pre- homogenizing treatment 12h, then aged treatment 24h.
(4) mixture after aging adds the stalk pore creating material of the crushing of 0.1 weight portion to mix, and obtains powder.
(5) it is 10-25% by the powder drying in (4) to moisture content, is molded with comminutor, raw material ball particle diameter 5-20mm,
With drying machine drying to moisture content it is 5-8% by it, is sent in sintering oven, preheating time is 20min, and preheating temperature is
650 DEG C, sintering time is 10min, and sintering temperature is 1050 DEG C, and haydite is obtained after natural cooling.
From above-described embodiment, deep dehydration is not needed when sludge is processed, it is only necessary to quiescent settling, and utilize pump
To convey sludge, the pollution to environment is reduced, and calorific value is provided using the organic matter in sludge, it is raw without adding flyash
Into haydite there is lightweight, high-strength, thermal conductivity factor is low, the features such as water absorption rate is big, preparation method, process is simple, easily operation.
Claims (8)
1. a kind of method that utilization sludge prepares haydite with building castoff, the raw materials used sludge including sewage treatment plant's generation
Water and building castoff, it is characterised in that comprise the following steps：
Step (1), sludge water forms thickened sludge water after settling tank is through quiescent settling in settling tank bottom；
Step (2), building castoff carries out break process；
Step (3), the thickened sludge water that the step (1) is formed and the broken building castoff of step (2) are carried out after mixing
Mechanical agitation, pre- homogenizing treatment is carried out by the mixture after stirring, then carries out ripening.
Step (4), adds pore creating material to mix in the mixture after ageing, obtains powder.
Step (5), the powder in the step (4) is dried, and raw material ball is generated with comminutor, is sent into after raw material ball is dried and burnt
Sintered in knot kiln, obtained final product after natural cooling.
2. method according to claim 1, it is characterised in that the thickened sludge water moisture content in the step (2) is
90%-95%.
3. method according to claim 1, it is characterised in that break process to the particle diameter in the step (3) is 60-70
Targeted fine powder >=50%, remaining particle diameter≤1mm.
4. method according to claim 1, it is characterised in that in the step (4)：Thickened sludge water 70-90 weight portions,
Building castoff 10-30 weight portions；Pre- homogenizing process time is 6-12h, and digestion time is 12-24h.
5. method according to claim 1, it is characterised in that the pore creating material in the step (4) is the stalk after crushing
Or sawdust.
6. method according to claim 1 or 5, it is characterised in that the addition of described pore creating material is 0.01-0.1 weights
Amount part.
7. method according to claim 1, it is characterised in that powder drying to the moisture content in the step (6) is
10%-25%, raw material ball warp drying machine drying to the moisture content of comminutor generation is 5%-8%, during the preheating of the sintering oven
Between be 10-20min, preheating temperature is 450-650 DEG C, and time of sintering is 5-10min, and the temperature of sintering is 850-1050 DEG C.
8. method according to claim 1, it is characterised in that the raw material ball particle diameter of comminutor generation in the step (6)
It is 5-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611045203.8A CN106747593A (en) | 2016-11-21 | 2016-11-21 | A kind of method that utilization sludge prepares haydite with building castoff |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611045203.8A CN106747593A (en) | 2016-11-21 | 2016-11-21 | A kind of method that utilization sludge prepares haydite with building castoff |
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| CN106747593A true CN106747593A (en) | 2017-05-31 |
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| CN201611045203.8A Pending CN106747593A (en) | 2016-11-21 | 2016-11-21 | A kind of method that utilization sludge prepares haydite with building castoff |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487836A (en) * | 2017-08-25 | 2017-12-19 | 兰州铁道设计院有限公司 | A kind of preparation method of city sludge bio-carrier |
| CN109251055A (en) * | 2018-11-19 | 2019-01-22 | 南京工业大学 | A kind of method that industrial sludge prepares thermal-insulation particle with building waste, industrial residue |
| CN110950626A (en) * | 2019-10-28 | 2020-04-03 | 中盐安徽红四方新型建材科技有限公司 | Autoclaved sand-lime brick and preparation method thereof |
| CN112679222A (en) * | 2020-12-09 | 2021-04-20 | 辽宁省环保集团有限责任公司 | Resource disposal method for sludge drying incineration granulation |
| CN113651631A (en) * | 2021-09-24 | 2021-11-16 | 南京信息工程大学 | Preparation method for producing ceramsite by utilizing solid waste |
| CN115057717A (en) * | 2022-06-14 | 2022-09-16 | 福建工程学院 | Preparation method of magnetic ceramsite with high adsorption performance |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487836A (en) * | 2017-08-25 | 2017-12-19 | 兰州铁道设计院有限公司 | A kind of preparation method of city sludge bio-carrier |
| CN109251055A (en) * | 2018-11-19 | 2019-01-22 | 南京工业大学 | A kind of method that industrial sludge prepares thermal-insulation particle with building waste, industrial residue |
| CN110950626A (en) * | 2019-10-28 | 2020-04-03 | 中盐安徽红四方新型建材科技有限公司 | Autoclaved sand-lime brick and preparation method thereof |
| CN112679222A (en) * | 2020-12-09 | 2021-04-20 | 辽宁省环保集团有限责任公司 | Resource disposal method for sludge drying incineration granulation |
| CN113651631A (en) * | 2021-09-24 | 2021-11-16 | 南京信息工程大学 | Preparation method for producing ceramsite by utilizing solid waste |
| CN115057717A (en) * | 2022-06-14 | 2022-09-16 | 福建工程学院 | Preparation method of magnetic ceramsite with high adsorption performance |
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Application publication date: 20170531 |