CN1223545C - Sintered brick produced by using paper-making sludge of waste paper and its preparing method - Google Patents

Sintered brick produced by using paper-making sludge of waste paper and its preparing method Download PDF

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Publication number
CN1223545C
CN1223545C CNB01126893XA CN01126893A CN1223545C CN 1223545 C CN1223545 C CN 1223545C CN B01126893X A CNB01126893X A CN B01126893XA CN 01126893 A CN01126893 A CN 01126893A CN 1223545 C CN1223545 C CN 1223545C
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China
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regenerated papermaking
brick
weight
adobe
mud
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CNB01126893XA
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Chinese (zh)
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CN1408675A (en
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韩晓伟
李新华
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韩晓伟
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Priority to CNB01126893XA priority Critical patent/CN1223545C/en
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Publication of CN1223545C publication Critical patent/CN1223545C/en

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    • Y02W30/97

Abstract

The present invention discloses a method for producing clinker bricks by regenerated papermaking sludge, which comprises the following steps: a) the regenerated papermaking sludge is pretreated by a germicide; b) 70 to 85 parts of clay soil by weight, 10 to 25 parts of pretreated sludge by weight and 5 to 10 parts of cinder by weight are mixed; and c) the obtained mixture is extruded into blank bars, cut into adobe and dried, and the adobe is sintered at a sintering temperature of 600 to 700 DEG C. The brickmaking method solves the problem of treating a large amount of the regenerated papermaking sludge, and realizes the regeneration and the utilization of waste materials, and thereby, the method saves the clay soil and has environmental protection meaning. Simultaneously, the method has the advantages of simple technology and low cost, and the method is suitable for mass industrial production. The clinker brick produced by using the method has the advantages of smooth appearance, standard dimension and compact structure, and both the pressure resistance and the folding resistance conform to the national standard.

Description

Utilize vitrified brick that regenerated papermaking mud makes and preparation method thereof

Technical field

Vitrified brick that the mud that the present invention relates to utilize regenerated papermaking to produce makes and preparation method thereof.

Background technology

China's building trade is huge to the demand of vitrified brick.The utilization of conventional vitrified brick takes the farmland clay makes through sintering, thereby causes soil resource to run off in a large number, and it is quite serious to ruin the field phenomenon.

Paper has been widely used in various fields.But a large amount of mud that paper industry produces bring serious pollution problem to environment, and along with the strictness day by day of national environmental protection policy, mud how to dispose the annual enormous amount that produces of paper-making industry more and more becomes the focus that people pay close attention to.If adopt the burning disposal not only can atmosphere pollution, and it be huge to consume energy; And if processing is filled up in employing, then can pollute underground water resources.Therefore, how to handle paper mill sludge and become the environmental issue that presses for solution at present.

Application for a patent for invention prospectus CN 1299790A discloses a kind of method of utilizing papermaking waste material brickmaking, this method comprises papermaking waste material blending by a certain percentage in earth or flyash, earth packed into or with the brick-making mould of packing into after the flyash compression to form adobe, the mould that will have adobe is put into the brickmaking kiln, and heating makes the adobe sintering.The used papermaking waste material of this method is a very wide in range notion, can be all waste materials that produce in the paper-making process, comprises the waste materials such as black liquor, xylogen and useless fiber that produce in papermaking or the pulping process.The used flyash of this method is to settle from the stack gas of power station and coking plant, draws materials to be subjected to the region restriction.In addition, this method uses brick-making mould to form adobe, obviously also it will be taken out from mould after making vitrified brick.For general middle and small scale brickkiln factory (day output is more than 8 10,000 bricks), it is consuming time very big so to adorn moulding/demoulding consumption worker, is not suitable for actual industrial production.

Summary of the invention

The purpose of this invention is to provide a kind of method for preparing vitrified brick, this method has solved the waste disposal problem of regenerated papermaking mud, has saved soil resource simultaneously, and technology is simple, cost is low and be suitable for large-scale commercial production.

A further object of the invention provides the vitrified brick that a kind of mud that utilizes regenerated papermaking to produce makes, and the withstand voltage properties and the fracture resistance of the brick body of this vitrified brick all meet national standard.

The invention provides a kind of method of utilizing regenerated papermaking mud to prepare vitrified brick, this method may further comprise the steps:

A) with sterilant regenerated papermaking mud is carried out pre-treatment,

B) mix 70-85 weight part clay, 10-25 weight part through pretreated regenerated papermaking mud and 5-10 weight part cinder,

C) the gained mixture is extruded into the base bar, cuts into adobe, after the drying, sintering is carried out in adobe with 600-700 ℃ sintering temperature.

In aforesaid method, sterilant better is a clorox, and mixing step better is to adopt pair roller stirrer or biaxial rneader to carry out.

The present invention also provides the vitrified brick that utilizes regenerated papermaking mud to make with aforesaid method.Described vitrified brick comprises fired common brick, sintered perforated brick, sintered hollow block, hollow stripping and slicing brick and various types of sintering tile.

Brick-making method of the present invention has solved the handling problem of a large amount of mud of regenerated papermaking generation, makes waste material be able to regeneration, thereby has saved clay, has environment protection significance.Simultaneously, brick-making method technology of the present invention is simple, and cost is low, is suitable for industrial mass production, and it is little to make the cracking degree of vitrified brick, the yield rate height.The vitrified brick flat appearance, size standard, withstand voltage properties and the fracture resistance that are made by brick-making process of the present invention are good, and every index all meets national standard.

Embodiment

The present inventor has furtherd investigate the characteristic of clay, cinder and regenerated papermaking mud, and goes out to prepare the appropriate proportioning of adobe according to their characteristic research separately.

Alleged among the present invention " regenerated papermaking mud ", i.e. the mud of regenerated papermaking generation refers to that specially adopt with import or homemade waste paper in the paper mill is raw material, produces the mud that is produced in the recycled writing paper process.The major ingredient of regenerated papermaking mud is the wooden staple fibre of 45-53%, the inorganicss such as lime carbonate of 17-20%, and other organism, and it is neutral that its pH value is.The calorific value of wooden staple fibre itself is about 10.5kJ, and its granularity is little, can make the heat uniform distribution during sintering, thereby can shorten sintering time.Partly replace cinder (its calorific value is about 6.3kJ) with wooden staple fibre, can cut down the consumption of energy.In addition, the uniform distribution of wooden staple fibre in adobe can prevent adobe explosion or distortion when sintering effectively.Inorganic meals such as another main ingredient lime carbonate in the regenerated papermaking mud can increase vitrified brick tissue density effectively, promote that the brick face is smooth, strengthen brick face sticking power.

The used cinder of the present invention is a remaining lime-ash behind the coal combustion, compare with flyash preparation have aspect the vitrified brick cost low, get the compressive strength advantages of higher that material is convenient, make brick.

Utilize regenerated papermaking mud to make in the method for vitrified brick in the present invention, use 70-85 weight part clay, 10-25 weight part through pretreated regenerated papermaking mud and 5-10 weight part cinder, better be to use 75-80 weight part clay, 15-25 weight part through pretreated regenerated papermaking mud and 5-10 weight part cinder.The clay consumption is well below the consumption of conventional brickmaking medium clay soil.The mud consumption too much can make the density of gained vitrified brick excessive (ventilation property is poor), and withstand voltage properties decline, does not meet national standard; The mud consumption very little, the then corresponding minimizing of staple fibre amount, thereby heat is not enough when the adobe sintering.The cinder consumption too much can make adobe ftracture when sintering, and the flat appearance degree and the sticking power of gained vitrified brick are affected; The cinder consumption then can reduce heat value of mixture very little, and heat is not enough during sintering.If will reach required calorific value, can only strengthen the mud consumption, but the mud adding can cause too much withstand voltage properties not meet national standard.

In a preferable embodiment of the present invention, the preparation of vitrified brick can may further comprise the steps:

1. the pre-treatment of raw material

Regenerated papermaking mud contains a large amount of organic microbials, can produce stench during transportation and the stacking, and environment is caused secondary pollution.In the methods of the invention,, in regenerated papermaking mud, add the sterilant of 0.5-1% (weight), make the bacterial count in the regenerated papermaking mud be reduced to 1000-2000/milliliter by 20000-30000/milliliter by the weight of mud.Used sterilant can be clorox, Sodium Silicofluoride, Phaltan etc., wherein better is clorox.

At air drying regenerated papermaking mud, make its water content drop to 40-50% by 70%.

Cinder is crushed to the particle that diameter is the 1-3 millimeter, and available ordinary method is carried out fragmentation.

2. proportion of raw materials and mixing

Mix stirring 70-85 weight part clay, 10-25 weight part through pretreated regenerated papermaking mud and 5-10 weight part cinder with stirrer, described stirrer for example is stirrers such as pair roller or twin shaft.

3. extrusion moulding

Extrude the base bar with extrusion machine, cut into adobe with cutting machine again.

4. sintering makes finished product

With sintering in furnace behind the adobe natural air drying, advancing the kiln temperature is normal temperature, is warming up to 600-700 ℃ about half an hour, and wicket is opened in cooling gradually then after 4-4.5 hour, takes out finished product.

Further specify the present invention below in conjunction with embodiment.

Embodiment 1

Admixing in 25 kilograms of regenerated papermaking mud that 0.125 kilogram of clorox carries out pre-treatment and be dried to water content is 50%.Stir gained regenerated papermaking mud, 85 kilograms of clays and 5 kilograms of cinders with biaxial rneader through fragmentation, extrusion molding then, and use the cutting machine stripping and slicing, obtain adobe.Sintering in furnace behind 7 days natural air dryings, temperature is a normal temperature when advancing kiln, temperature is risen to 700 ℃ then, sintering 4 hours, the kiln discharge temperature is 50 ℃.The vitrified brick flat appearance that obtains, the size standard.From the gained vitrified brick, randomly draw 5 bricks, they are tested, the results are shown in Table 1.

Embodiment 2

Admixing in 10 kilograms of regenerated papermaking mud that 0.1 kilogram of clorox carries out pre-treatment and be dried to water content is 40%.Stir gained regenerated papermaking mud, 70 kilograms of clays and 10 kilograms of cinders with biaxial rneader through fragmentation, extrusion molding then, and use the cutting machine stripping and slicing, obtain adobe.Sintering in furnace behind 4 days natural air dryings, temperature is a normal temperature when advancing kiln, temperature is risen to 600 ℃ then, sintering 4.5 hours, the kiln discharge temperature is 40 ℃.The vitrified brick flat appearance that obtains, the size standard.From the gained vitrified brick, randomly draw 5 bricks, they are tested, the results are shown in Table 1.

Embodiment 3

Admixing in 20 kilograms of regenerated papermaking mud that 0.17 kilogram of clorox carries out pre-treatment and be dried to water content is 45%.Stir gained regenerated papermaking mud, 75 kilograms of clays and 7 kilograms of cinders with the pair roller stirrer through fragmentation, extrusion molding then, and use the cutting machine stripping and slicing, obtain adobe.Sintering in furnace behind 5 days natural air dryings, temperature is a normal temperature when advancing kiln, temperature is risen to 650 ℃ then, sintering 4.5 hours, the kiln discharge temperature is 40 ℃.The vitrified brick flat appearance that obtains, the size standard.From the gained vitrified brick, randomly draw 5 bricks, they are tested, the results are shown in Table 1.

Embodiment 4

Admixing in 15 kilograms of regenerated papermaking mud that 0.1 kilogram of clorox carries out pre-treatment and be dried to water content is 50%.Stir gained regenerated papermaking mud, 80 kilograms of clays and 9 kilograms of cinders with the pair roller stirrer through fragmentation, extrusion molding then, and use the cutting machine stripping and slicing, obtain adobe.Sintering in furnace behind 5 days natural air dryings, temperature is a normal temperature when advancing kiln, temperature is risen to 680 ℃ then, sintering 4 hours, the kiln discharge temperature is 45 ℃.The vitrified brick flat appearance that obtains, the size standard.From the gained vitrified brick, randomly draw 5 bricks, they are tested, the results are shown in Table 1.

Table 1 The embodiment numbering Clay consumption (kg) Mud consumption (kg) Cinder consumption (kg) Withstand voltage properties * Fracture resistance * ????1 ????85 ????25 ????5 Qualified Qualified ????2 ????70 ????10 ????10 Qualified Qualified ????3 ????75 ????20 ????7 Qualified Qualified ????4 ????80 ????15 ????9 Qualified Qualified

*" qualified " refers to meet vitrified brick GB5101-85 standard.The GB5101-85 regulation, five mean value 〉=9.81MPa of ultimate compression strength, monolithic minimum value 〉=5.89MPa, it is promptly qualified to reach this value; Five mean value 〉=2.26MPa of folding strength, monolithic minimum value 〉=1.28MPa, it is promptly qualified to reach this value.

Claims (5)

1. method of utilizing regenerated papermaking mud to prepare vitrified brick, this method may further comprise the steps:
A) with sterilant regenerated papermaking mud is carried out pre-treatment,
B) mix 70-85 weight part clay, 10-25 weight part through pretreated regenerated papermaking mud and 5-10 weight part cinder,
C) the gained mixture is extruded into the base bar, cuts into adobe, after the drying, sintering is carried out in adobe with 600-700 ℃ sintering temperature.
2. the method for claim 1 is characterized in that described sterilant is a clorox.
3. the method for claim 1 is characterized in that described mixing step adopts pair roller stirrer or biaxial rneader to carry out.
4. a vitrified brick that utilizes regenerated papermaking mud to make is characterized in that described vitrified brick makes with each described method among the claim 1-3.
5. vitrified brick as claimed in claim 4 is characterized in that described vitrified brick comprises fired common brick, sintered perforated brick, sintered hollow block, hollow stripping and slicing brick and sintering tile.
CNB01126893XA 2001-09-28 2001-09-28 Sintered brick produced by using paper-making sludge of waste paper and its preparing method CN1223545C (en)

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CN1223545C true CN1223545C (en) 2005-10-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101538146B (en) * 2009-04-27 2011-10-19 武汉理工大学 Harmless utilization method of electroplating sludge and oily sludge resources

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1323047C (en) * 2005-06-22 2007-06-27 苏州赛可利新型材料有限公司 Material for wall, and method for processing wall brick by said material
CN100509691C (en) * 2005-06-30 2009-07-08 浙江省建筑材料科技有限公司 Method for mfg. energy-saving building brick using paper making mud
CN101386524B (en) * 2008-10-28 2011-05-04 安徽工业大学 Method for preparing porcelain granule from waste paper-making sludge
CN101973753B (en) * 2010-10-29 2012-11-21 南京工业大学 Process for making bricks from excess sludge in chemical industry
CN102219420B (en) * 2011-04-15 2013-01-09 王传开 High calcium fly ash modified sludge, preparation method thereof and method for preparing perforated brick using modified sludge
CN102503369A (en) * 2011-10-15 2012-06-20 何家珠 Method for manufacturing brick from papermaking sludge
CN102503361A (en) * 2011-10-26 2012-06-20 泉州华祥纸业有限公司 Process method for preparing bricks by using papermaking sludge
CN103044005A (en) * 2012-12-14 2013-04-17 广东松发陶瓷股份有限公司 Transparent ceramic product
CN103044004A (en) * 2012-12-25 2013-04-17 广东非凡实业有限公司 Ceramic product for closestool and preparation method of ceramic product
CN103130492B (en) * 2013-03-14 2015-08-26 福建益源废物利用股份有限公司 A kind of regeneration brick utilizing paper mill sludge obtained and preparation method thereof
KR101409611B1 (en) * 2013-12-23 2014-06-18 이남승 Method of manufacturing formed body using paper sluge
CN104496411B (en) * 2014-12-15 2017-10-27 广东科达洁能股份有限公司 Imitation Rock Porcelain Tiles
CN104496412B (en) * 2014-12-15 2017-11-17 广东科达洁能股份有限公司 The special cinder of Imitation Rock Porcelain Tiles processed
CN104496413B (en) * 2014-12-15 2017-11-17 广东科达洁能股份有限公司 The processing technology of Imitation Rock Porcelain Tiles
CN105036705A (en) * 2015-06-29 2015-11-11 新乡新亚纸业集团股份有限公司 Sintered brick prepared by utilizing paper mill sludge and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101538146B (en) * 2009-04-27 2011-10-19 武汉理工大学 Harmless utilization method of electroplating sludge and oily sludge resources

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