CN103332924A - Preparation method of sintered water permeable brick - Google Patents
Preparation method of sintered water permeable brick Download PDFInfo
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- CN103332924A CN103332924A CN2013102517520A CN201310251752A CN103332924A CN 103332924 A CN103332924 A CN 103332924A CN 2013102517520 A CN2013102517520 A CN 2013102517520A CN 201310251752 A CN201310251752 A CN 201310251752A CN 103332924 A CN103332924 A CN 103332924A
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Abstract
The invention discloses a preparation method of a sintered water permeable brick. The method comprises the following steps of: pre-processing raw materials, drying, crushing and pelleting, adding caking powder to manufacture mixed powder, compression moulding, and finally sintering, wherein the main raw material is sludge in Taihu Lake, and the pre-processing comprises the following steps of: a, excavating the sludge in Taihu Lake, drying and crushing the sludge, sieving in a 40-mesh sieve; b, sufficiently mixing 50-10wt% of sludge in Taihu Lake, 0-30wt% of bauxite, 0-20wt% of lithium feldspar in proportion, adding water, manufacturing the uniformly mixed pug with water content of 10-20wt%, pelleting by using a pelleting machine, wherein the granularity is 4-24 meshes; c, after moulding the particle, drying and then sintering, wherein the sintering temperature is 850-1200 DEG C, and the sintering time is 180min. By specially pre-processing the sludge in Taihu Lake, the subsequent pressing and high-temperature sintering can be performed to manufacture the water permeable brick, the water permeable brick is high in strength, and high in water permeable speed; and the dual purposes of recycling the sludge in Taihu Lake and improving the urban ecological environment is realized.
Description
Technical field
The invention belongs to the enviroment protective ceramic water permeable brick of building material technical field, relate in particular to a kind of preparation method of sintering brick permeable to water.
Background technology
The TAIHU LAKE environmental problem is serious day by day in recent years, and the lake silt endogenous pollution becomes one of major influence factors of aggravation body eutrophication process.Taihu Lake mud mainly is incorporated into particulate matter contained in the lake water, the silt that rainwash carries and plant and animal residues etc.As can not in time rationally handling so a large amount of mud, will cause the lasting deterioration of TAIHU LAKE environment, take a large amount of soils, cause secondary pollution, and the heavy metal that contains in the mud easily forms the harm to ecotope and HUMAN HEALTH.In TAIHU LAKE environmental ecology governance process, ecological dredging is one of them particularly important link, and the mud that annual thousands of all places go out clearly need solve problem of outlet, at utmost realizes changing waste into resources and utilization of the recycling of renewable resources.Though encircle the city, Taihu Lake in recent years all doing Taihu Lake mud improvement, still more single aspect the utilization of Taihu Lake mud.The sludge treatment problem has to be solved.
Contain a large amount of inorganic compositions and organic component in the mud of Taihu Lake, its physicals is similar with the making raw material of permeable brick to the building road surface, but the present domestic report that utilizes Taihu Lake mud to make permeable brick that also finds no.
Walkway, square, the hard surface of domestic city generally use material impervious to water makings such as cement concrete, pitch, stone material, ceramic tile to form at present, and the road surface of these material makings progressively the incompatibility city therefore bring many negative impacts to urban ecological environment to keeping the requirement of good ecotope.Specifically, underground water is the valuable source of safeguarding urban development, but because urban pavement ventilation property and bad hydraulic permeability, rainwater is difficult to be penetrated into underground, causes the municipal water circulation to destroy, and underground water can't replenish, and causes that urban ground sinks, and becomes ecological hidden danger; On the other hand, because urban pavement ventilation property and bad hydraulic permeability, rainwater is difficult to be penetrated into underground, to the very big pressure of sewerage system increase, causes the city waterlogging season at heavy rain easily; Because hardened ground can not absorb precipitation, cause rainwater to be wasted at last, after rainy season, can not have the moisture evaporation because of local ground again, drought and water shortage occurs, urban heat land effect is outstanding day by day.For addressing the above problem, utilize permeable brick making urban pavement on the market, can promote well carrying out of municipal water circulation, reduce the pressure of sewerage system, underground water also can slacken urban heat land effect by permeable brick evaporation simultaneously.
Present permeable brick generally is divided into baking-free water-permeable brick and sintering brick permeable to water two classes.Baking-free water-permeable brick mainly with inorganic or organic adhesive backers, mixes with sandstone, particulate matter etc. under low temperature or normal temperature, makes through series of process such as moulding, maintenances.
For example: Chinese patent publication number CN 102400428A provides a kind of preparation method of baking-free water-permeable brick, is main raw material with the silica sand, is that adhesive preparation forms with the resin.This type of baking-free water-permeable brick adopts the pressing mode moulding more, and intensity determines by the binding agent performance, so shortcoming is that its intensity is relatively poor, the cracky fracture, and its weather resistance is not as sintering brick permeable to water.
Sintering brick permeable to water mainly adopts in inorganic materials and adds binding agent and organic granular, when high temperature burns till organic granular is burnt, and makes to form the pore that is communicated with in the brick body, thereby makes it to possess water permeability.For example: Chinese patent application numbers 201010504293.9 discloses a kind of permeable brick and manufacture method thereof.This permeable brick is fired by idiosome and is formed, and described idiosome comprises the component of following weight part: 1.0～1.5 parts in 80～90 parts of 10～30 purpose ceramic waste materiaves, 4～7 parts of wedding agents, 1.0～1.5 parts of binding agents and softening agent, but described softening agent is the after-flame organic materials.The permeability rate of this permeable brick and has kept splendid folding strength and ultimate compression strength more than 0.045ml*cm/ (mm2*sec).Its technical scheme also is to adopt conventional ceramic waste material and binding agent mixed sintering to make, and adds organic materials, reaches permeable performance, but its raw material sources are ceramic waste material, cost is higher, and it is single to originate, and can not solve the problem that Taihu Lake mud is recycled.
And for example: CN 101279838A provides a kind of preparation method of ceramic seepage brick, based on channel aggradation silt, adds sawdust and cullet powder, burns till preparation environmental protection seepage brick by high temperature.Though this type of seepage brick improves a lot than non-burning brick aspect weather resistance, channel aggradation silt and the Taihu Lake sludge quality of its utilization are roughly the same, but because sawdust is difficult to evenly disperse, therefore very easily cause the instability of product physicals in the batch production process in mixing process.Owing to the state of sawdust with individual particle exists, so this type of seepage brick is burning till the discontinuous hole that the back easily forms sealing, cause actual water permeability decline in addition.
Technique scheme all can not well solve utilizes Taihu Lake mud to be used as the making raw material problem of permeable brick, haves much room for improvement.
Summary of the invention
It is main raw material that purpose of the present invention provides a kind of ether lake silt, at first raw material is carried out pre-treatment, comprise steps such as drying, fragmentation, granulation, can enough carry out follow-up compacting and high temperature sintering, the permeable brick of producing has the intensity height, permeable speed waits excellent properties soon, realizes Taihu Lake mud recycling and improves the dual purpose of urban ecological environment.
The present invention is for solving above-mentioned environment and technical problem, provide following technical scheme: a kind of preparation method of sintering brick permeable to water, with raw material drying and break process, and add the cohesiveness powder and make mixed powder and compression moulding, the sintering preparation of dry-pressing formed back is finished, it is characterized in that described raw material is Taihu Lake mud, its drying and break process may further comprise the steps:
A. take Taihu Lake mud, and mud is carried out drying and break process, cross 40 mesh sieves at last;
B. Taihu Lake mud 50 ~ 100 wt%, bauxitic clay 0 ~ 30 wt%, lithium feldspar 0 ~ 20wt% are fully mixed in proportion, add water and make the mixing pug that water ratio is 10 ~ 20 wt%, after utilize tablets press, finish granulation process, granularity 4 ~ 24 orders;
C. after the particle moulding, burn till after drying, firing temperature is 850 ~ 1200 ℃, and firing time is 180 min.
As preferably, described mixed powder mixes, and humidification, and keeping the powder water ratio is 2 ~ 5 wt%.
As preferably, the cohesiveness powder is a kind of or combination of Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder.
As preferably, the mass percent of particle and cohesiveness powder is in the mixed powder: particle 50 ~ 90 wt%, Taihu Lake mud powder 5 ~ 25 wt%, glass powder 0 ~ 15 wt%, calcite 0 ~ 10%, talcum 0 ~ 10%, lithium feldspar 0 ~ 20 wt%, starchy binder 0 ~ 5 wt%.
As preferably, dry-pressing formed after, carry out drying at the production line dry kiln, top temperature≤180 ℃, burn till at calcining kiln dry back, firing temperature is 900 ~ 1200 ℃.
Beneficial effect of the present invention:
1, preparation method's ether lake mud of the present invention is main raw material (content 〉=85 wt%), can effectively utilize Taihu Lake mud, improves the Taihu Lake water body environment, solves the stacking problem of Taihu Lake mud, prevents that the mud stacking from causing secondary pollution;
2, preparation method's ether lake silt of the present invention is main raw material, can reduce in a large number traditional ceramics produce in to the demand of mineral products, be conducive to protect Mineral resources and ecotope;
3, the permeable brick of preparation method's preparation of the present invention has excellent water permeability, helps the urban rainwater rapid permeability below the face of land, effectively improves the municipal water circulation, reduces sewerage system pressure simultaneously; Having a distinct increment aspect intensity and the weather resistance simultaneously;
4, preparation method's ether lake silt of the present invention is main raw material, and not only raw materials cost is low, and production technique is simple, can realize scale production.
Embodiment
Embodiment 1: at first get some Taihu Lake mud and carry out seasoning, break process, cross 40 mesh sieves, Taihu Lake mud powder is added water pugging (the particle prescription carries out in #1 ratio in the table 1), water ratio is at 10-20 wt%.Carry out granulation (4-24 order) with extruding granulator then, under 850-1200 ℃, burn till after the particle drying.Get and burn till back particle and Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder etc. and carry out weighing in the ratio of example in the table 21, and use mixer to mix, make the compound of water ratio 2-5 wt%, use dry-pressing formed machine dry-pressing formed then.The later half finished bricks of moulding enters dry kiln and carries out drying (be 180 min drying cycle, top temperature≤180 ℃), and dry back base substrate moisture＜1 wt% enters tunnel furnace and burns till (top temperature is 1180 ℃, and firing period is 300 min).It is as shown in table 3 to burn till the permeable brick performance in back.
Embodiment 2: at first get some Taihu Lake mud and carry out seasoning, break process, cross 40 mesh sieves, Taihu Lake mud powder is mixed and add water pugging (the particle prescription carries out in #2 ratio in the table 1) with bauxitic clay, lithium lithium feldspar etc., water ratio is at 10-20 wt%.Carry out granulation (4-24 order) with extruding granulator then, under 850-1200 ℃, burn till after the particle drying.Get and burn till back particle and Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder etc. and carry out weighing in the ratio of example in the table 22, and use mixer to mix, make the compound of water ratio 2-5 wt%, use dry-pressing formed machine dry-pressing formed then.The later half finished bricks of moulding enters dry kiln and carries out drying (be 180 min drying cycle, top temperature≤180 ℃), and dry back base substrate moisture＜1 wt% enters tunnel furnace and burns till (top temperature is 1180 ℃, and firing period is 300 min).It is as shown in table 3 to burn till the permeable brick performance in back.
Embodiment 3: at first get some Taihu Lake mud and carry out seasoning, break process, cross 40 mesh sieves, Taihu Lake mud powder is mixed and add water pugging (the particle prescription carries out in #3 ratio in the table 1) with bauxitic clay, lithium lithium feldspar etc., water ratio is at 10-20 wt%.Carry out granulation (4-24 order) with extruding granulator then, under 850-1200 ℃, burn till after the particle drying.Get and burn till back particle and Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder etc. and carry out weighing in the ratio of example in the table 23, and use mixer to mix, make the compound of water ratio 2-5 wt%, use dry-pressing formed machine dry-pressing formed then.The later half finished bricks of moulding enters dry kiln and carries out drying (be 180 min drying cycle, top temperature≤180 ℃), and dry back base substrate moisture＜1 wt% enters tunnel furnace and burns till (top temperature is 1180 ℃, and firing period is 300 min).It is as shown in table 3 to burn till the permeable brick performance in back.
Embodiment 4: at first get some Taihu Lake mud and carry out seasoning, break process, cross 40 mesh sieves, Taihu Lake mud powder is mixed and add water pugging (the particle prescription carries out in #2 ratio in the table 1) with bauxitic clay, lithium feldspar etc., water ratio is at 10-20 wt%.Carry out granulation (4-24 order) with extruding granulator then, under 850-1200 ℃, burn till after the particle drying.Get and burn till back particle and Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder etc. and carry out weighing in the ratio of example in the table 24, and use mixer to mix, make the compound of water ratio 2-5 wt%, use dry-pressing formed machine dry-pressing formed then.The later half finished bricks of moulding enters dry kiln and carries out drying (be 180 min drying cycle, top temperature≤180 ℃), and dry back base substrate moisture＜1 wt% enters tunnel furnace and burns till (top temperature is 1180 ℃, and firing period is 300 min).It is as shown in table 3 to burn till the permeable brick performance in back.
Embodiment 5: at first get some Taihu Lake mud and carry out seasoning, break process, cross 40 mesh sieves, Taihu Lake mud powder is mixed and add water pugging (the particle prescription carries out in #3 ratio in the table 1) with bauxitic clay, lithium feldspar etc., water ratio is at 10-20 wt%.Carry out granulation (4-24 order) with extruding granulator then, under 850-1200 ℃, burn till after the particle drying.Get and burn till back particle and Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder etc. and carry out weighing in the ratio of example in the table 25, and use mixer to mix, make the compound of water ratio 2-5 wt%, use dry-pressing formed machine dry-pressing formed then.The later half finished bricks of moulding enters dry kiln and carries out drying (be 180 min drying cycle, top temperature≤180 ℃), and dry back base substrate moisture＜1 wt% enters tunnel furnace and burns till (top temperature is 1180 ℃, and firing period is 300 min).It is as shown in table 3 to burn till the permeable brick performance in back.
Embodiment 6: at first get some Taihu Lake mud and carry out seasoning, break process, cross 40 mesh sieves, Taihu Lake mud powder is mixed and add water pugging (the particle prescription carries out in #2 ratio in the table 1) with bauxitic clay, lithium feldspar etc., water ratio is at 10-20 wt%.Carry out granulation (4-24 order) with extruding granulator then, under 850-1200 ℃, burn till after the particle drying.Get and burn till back particle and Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder etc. and carry out weighing in the ratio of example in the table 26, and use mixer to mix, make the compound of water ratio 2-5 wt%, use dry-pressing formed machine dry-pressing formed then.The later half finished bricks of moulding enters dry kiln and carries out drying (be 180 min drying cycle, top temperature≤180 ℃), and dry back base substrate moisture＜1 wt% enters tunnel furnace and burns till (top temperature is 1180 ℃, and firing period is 300 min).It is as shown in table 3 to burn till the permeable brick performance in back.
Embodiment 7: at first get some Taihu Lake mud and carry out seasoning, break process, cross 40 mesh sieves, Taihu Lake mud powder is mixed and add water pugging (the particle prescription carries out in #3 ratio in the table 1) with bauxitic clay, lithium feldspar etc., water ratio is at 10-20 wt%.Carry out granulation (4-24 order) with extruding granulator then, under 850-1200 ℃, burn till after the particle drying.Get and burn till back particle and Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder etc. and carry out weighing in the ratio of example in the table 27, and use mixer to mix, make the compound of water ratio 2-5 wt%, use dry-pressing formed machine dry-pressing formed then.The later half finished bricks of moulding enters dry kiln and carries out drying (be 180 min drying cycle, top temperature≤180 ℃), and dry back base substrate moisture＜1 wt% enters tunnel furnace and burns till (top temperature is 1180 ℃, and firing period is 300 min).It is as shown in table 3 to burn till the permeable brick performance in back.
Embodiment 8: at first get some Taihu Lake mud and carry out seasoning, break process, cross 40 mesh sieves, Taihu Lake mud powder is mixed and add water pugging (the particle prescription carries out in #3 ratio in the table 1) with bauxitic clay, lithium feldspar etc., water ratio is at 10-20 wt%.Carry out granulation (4-24 order) with extruding granulator then, under 850-1200 ℃, burn till after the particle drying.Get and burn till back particle and Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder etc. and carry out weighing in the ratio of example in the table 28, and use mixer to mix, make the compound of water ratio 2-5 wt%, use dry-pressing formed machine dry-pressing formed then.The later half finished bricks of moulding enters dry kiln and carries out drying (be 180 min drying cycle, top temperature≤180 ℃), and dry back base substrate moisture＜1 wt% enters tunnel furnace and burns till (top temperature is 1180 ℃, and firing period is 300 min).It is as shown in table 3 to burn till the permeable brick performance in back.
Embodiment 9: at first get some Taihu Lake mud and carry out seasoning, break process, cross 40 mesh sieves, Taihu Lake mud powder is mixed and add water pugging (the particle prescription carries out in #3 ratio in the table 1) with bauxitic clay, lithium feldspar etc., water ratio is at 10-20 wt%.Carry out granulation (4-24 order) with extruding granulator then, under 850-1200 ℃, burn till after the particle drying.Get and burn till back particle and Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder etc. and carry out weighing in the ratio of example in the table 29, and use mixer to mix, make the compound of water ratio 2-5 wt%, use dry-pressing formed machine dry-pressing formed then.The later half finished bricks of moulding enters dry kiln and carries out drying (be 180 min drying cycle, top temperature≤180 ℃), and dry back base substrate moisture＜1 wt% enters tunnel furnace and burns till (top temperature is 1180 ℃, and firing period is 300 min).It is as shown in table 3 to burn till the permeable brick performance in back.
Embodiment 10: at first get some Taihu Lake mud and carry out seasoning, break process, cross 40 mesh sieves, Taihu Lake mud powder is mixed and add water pugging (the particle prescription carries out in #3 ratio in the table 1) with bauxitic clay, lithium feldspar etc., water ratio is at 10-20 wt%.Carry out granulation (4-24 order) with extruding granulator then, under 850-1200 ℃, burn till after the particle drying.Get and burn till back particle and Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder etc. and carry out weighing in the ratio of example in the table 2 10, and use mixer to mix, make the compound of water ratio 2-5 wt%, use dry-pressing formed machine dry-pressing formed then.The later half finished bricks of moulding enters dry kiln and carries out drying (be 180 min drying cycle, top temperature≤180 ℃), and dry back base substrate moisture＜1 wt% enters tunnel furnace and burns till (top temperature is 1180 ℃, and firing period is 300 min).It is as shown in table 3 to burn till the permeable brick performance in back.
Embodiment 11: at first get some Taihu Lake mud and carry out seasoning, break process, cross 40 mesh sieves, Taihu Lake mud powder is mixed and add water pugging (the particle prescription carries out in #3 ratio in the table 1) with bauxitic clay, lithium feldspar etc., water ratio is at 10-20 wt%.Carry out granulation (4-24 order) with extruding granulator then, under 850-1200 ℃, burn till after the particle drying.Get and burn till back particle and Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder etc. and carry out weighing in the ratio of example in the table 2 11, and use mixer to mix, make the compound of water ratio 2-5 wt%, use dry-pressing formed machine dry-pressing formed then.The later half finished bricks of moulding enters dry kiln and carries out drying (be 180 min drying cycle, top temperature≤180 ℃), and dry back base substrate moisture＜1 wt% enters tunnel furnace and burns till (top temperature is 1180 ℃, and firing period is 300 min).It is as shown in table 3 to burn till the permeable brick performance in back.
Claims (5)
1. the preparation method of a sintering brick permeable to water, with raw material drying and break process, and add the cohesiveness powder and make mixed powder and compression moulding, the sintering preparation of dry-pressing formed back is finished, it is characterized in that described raw material is Taihu Lake mud, its drying and break process may further comprise the steps:
A. take Taihu Lake mud, and mud is carried out drying and break process, cross 40 mesh sieves at last;
B. Taihu Lake mud 50 ~ 100 wt%, bauxitic clay 0 ~ 30 wt%, lithium feldspar 0 ~ 20wt% are fully mixed in proportion, add water and make the mixing pug that water ratio is 10 ~ 20 wt%, after utilize tablets press, finish granulation process, granularity 4 ~ 24 orders;
C. after the particle moulding, burn till after drying, firing temperature is 850 ~ 1200 ℃, and firing time is 180 min.
2. the preparation method of a kind of sintering brick permeable to water according to claim 1 is characterized in that described mixed powder mixes, and humidification, and keeping the powder water ratio is 2 ~ 5 wt%.
3. the preparation method of a kind of sintering brick permeable to water according to claim 1 is characterized in that the cohesiveness powder is a kind of or combination of Taihu Lake mud powder, glass powder, calcite, talcum, lithium feldspar, starchy binder.
4. the preparation method of a kind of sintering brick permeable to water according to claim 1 is characterized in that the mass percent of particle and cohesiveness powder is in the mixed powder: particle 50 ~ 90 wt%, Taihu Lake mud powder 5 ~ 25 wt%, glass powder 0 ~ 15 wt%, calcite 0 ~ 10%, talcum 0 ~ 10%, lithium feldspar 0 ~ 20 wt%, starchy binder 0 ~ 5 wt%.
5. the preparation method of a kind of sintering brick permeable to water according to claim 1, it is characterized in that dry-pressing formed after, carry out drying at the production line dry kiln, top temperature≤180 ℃, burn till at calcining kiln dry back, firing temperature is 900 ~ 1200 ℃.
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| CN106587926A (en) * | 2016-12-09 | 2017-04-26 | 辽宁法库陶瓷工程技术研究中心 | Preparation method of water-permeable ceramic brick |
| CN107162566A (en) * | 2016-03-07 | 2017-09-15 | 上海铭成永美环保科技有限公司 | A kind of ecological permeable Ceramic Tiles and its production method |
| CN107324724A (en) * | 2017-07-25 | 2017-11-07 | 合肥达户电线电缆科技有限公司 | A kind of environment friendly pervious brick and preparation method thereof |
| CN110818385A (en) * | 2019-10-11 | 2020-02-21 | 武汉纳士德热能科技设备有限公司 | Antique blue brick taking lake silt as main raw material and firing method thereof |
| CN116283221A (en) * | 2023-03-01 | 2023-06-23 | 南京声远声学科技有限公司 | Micro-perforated sound-absorbing ceramic material based on Taihu sediment and preparation method thereof |
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| CN110818385B (en) * | 2019-10-11 | 2021-11-23 | 武汉纳士德热能科技设备有限公司 | Antique blue brick taking lake silt as main raw material and firing method thereof |
| CN116283221A (en) * | 2023-03-01 | 2023-06-23 | 南京声远声学科技有限公司 | Micro-perforated sound-absorbing ceramic material based on Taihu sediment and preparation method thereof |
| CN116283221B (en) * | 2023-03-01 | 2023-11-14 | 南京声远声学科技有限公司 | Micro-perforated sound-absorbing ceramic material based on Taihu sediment and preparation method thereof |
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