CN108751920A - A method of producing magnesite board with paper white sludge - Google Patents
A method of producing magnesite board with paper white sludge Download PDFInfo
- Publication number
- CN108751920A CN108751920A CN201810400793.4A CN201810400793A CN108751920A CN 108751920 A CN108751920 A CN 108751920A CN 201810400793 A CN201810400793 A CN 201810400793A CN 108751920 A CN108751920 A CN 108751920A
- Authority
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- China
- Prior art keywords
- magnesite board
- parts
- sludge
- white
- paper white
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- 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.)
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Classifications
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- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/30—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements or similar cements
- C04B28/32—Magnesium oxychloride cements, e.g. Sorel cement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
- C04B22/062—Oxides, Hydroxides of the alkali or alkaline-earth metals
- C04B22/064—Oxides, Hydroxides of the alkali or alkaline-earth metals of the alkaline-earth metals
Abstract
The invention discloses a kind of methods producing magnesite board with paper white sludge, are as follows：S1：The processing of paper white sludge：Into paper white sludge slurry, addition sawdust is put into blender and is sufficiently mixed, and is washed for white clay using drum-type vacuum filter；White clay after drying is put into kiln and is roasted, calcination temperature is 900~1100 DEG C, and roasting time is 3~10 hours, S2：Using the calcining white clay obtained in S1, the component for matching material weight part of magnesite board is as follows：0.8-1.5 parts of 8-12 parts of burning of lime sludge object, 12-16 parts of magnesia, 6-8 parts of magnesium chloride hexahydrate, 1-3 parts of sawdust, 4-6 parts of perlite and modifying agent；S3：Dispensing in S2 is sufficiently mixed, S4：Particulate matter in S3 is subjected to cloth, type is then pressed into and obtains magnesite board base；S5：Magnesite board base in S4 is demoulded for 12 hours using thermostatic curing；S6：Excision forming, the invention economize on resources, reduce environmental pollution.
Description
Technical field
The invention belongs to magnesite board technical fields, more specifically more particularly to it is a kind of with paper white sludge produce magnesite board
Method.
Background technology
White clay is a kind of solid waste for generating the waste water (being also black liquor) of chemical pulping after chemical recovery system processing
Object.Environmental pollution in order to prevent, in pulp mill, black liquor is generally used current ripe alkali recovery technology and is handled, by black liquor
In organic matter carry out the caustic soda (NaOH) that burning is consumed using thermal energy and recyclable slurrying.Chemical recovery system has handled slurrying
The pollutant of factory 90%, but also will produce the white clay waste of a large amount of (about 0.8 ton of white clay/1 ton paper pulp).The main component of white clay
For calcium carbonate (CaCO3), state is paste, moisture content 40% or so.White clay amount is big, is just opened early in 20 middle of century pulp mills
Begin the utilization of white clay, with the secondary pollution for preventing it from generating.Traditional method is that burning of lime sludge is prepared calcium oxide (alkali collection
A kind of raw material of system) carry out reuse.But with the slurrying that non-wood-fiber (such as bamboo, straw, wheat straw and reed) is raw material
Silicon (SiO2) content height (can reach wood pulp factory white clay silicone content 10 times are even higher), makes burning of lime sludge reuse in the white clay of factory
Difficulty and added cost；And increase the silicone content in recycling alkali and recycled if recycling, alkali certainly will be aggravated and returned
The silicon obstacle of receipts generates vicious circle, so that alkali collection is unable to operate normally, so the white clay of most non-wood pulp enterprises is simultaneously
It is recycled not over the method for calcining.For many years, people are directed to white clay main component and its property, to non-wood pulp white clay
Comprehensive utilization technique has carried out the research work of multiple fields.For example, white clay is used for oil field, is paved the way, or for coating, plastics
Deng additive, but dosage is limited, and the value of utilization is little, and it is larger to be limited by other industry degree.By white clay into
Row is refined to be processed into calcium carbonate, and as being filled in paper-making process, but the cleannes of product, crystal shape and size cannot still expire
The requirement of sufficient papermaking filler.From this, although the research in relation to white clay is many, due to technical problem, cost problem or
Reasons, the white clays such as dosage is very few are not effectively utilized.Currently, most white clays can only use air storage or land
The mode that ground is buried is disposed, and has not only caused the secondary pollution of environment, but also waste a large amount of Calcium Carbonate resource, enterprise must pay
Huge charges for disposing pollutants, white clay, which is administered, just becomes many enterprises problem in the urgent need to address, and therefore, invention is a kind of to use papermaking
The method that white clay produces magnesite board, it is necessary to solve the above problems.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of of proposition is produced with paper white sludge
The method of magnesite board.
To achieve the above object, the present invention provides the following technical solutions：
A method of magnesite board being produced with paper white sludge, this produces the method specific steps of magnesite board such as with paper white sludge
Under：
S1：The processing of paper white sludge：Into paper white sludge slurry, addition sawdust is put into blender and is sufficiently mixed, true using drum-type
Empty filter is washed for white clay；Mud filtration washing is taken out for dregs washer using pre- on-hook, after removing big particle, is carried out
It filters, be concentrated to give dehydration white clay；White clay after drying is put into kiln and is roasted, calcination temperature is 900~1100 DEG C, roasting
It is 3~10 hours to burn the time, collects calcined product and grinds to obtain burning of lime sludge object；
S2：Using the calcining white clay obtained in S1, the component for matching material weight part of magnesite board is as follows：Burning of lime sludge object
0.8-1.5 parts of 8-12 parts, 12-16 parts of magnesia, 6-8 parts of magnesium chloride hexahydrate, 1-3 parts of sawdust, 4-6 parts of perlite and modifying agent；
S3：Dispensing in S2 is sufficiently mixed, is crushed, sieve material is carried out using the sieve of 300-500 mesh, obtains particle
Object；
S4：Particulate matter in S3 is subjected to cloth, the type that is then pressed into obtains magnesite board base, and magnesite board base uses multilayer
Glass-fiber-fabric, one layer slurry and layer of non-woven fabric laying compression moulding；
S5：Magnesite board base in S4 is demoulded for 12 hours using thermostatic curing；
S6：Excision forming is carried out using closing Double Directional Cutting or open Double Directional Cutting method.
Preferably, it is 10 the ratio of sawdust to be added in the paper white sludge slurry：1, the sawdust can play raising white clay
Intensity, prevent transport, air-dry when it is broken, meanwhile, sawdust plays the role of fuel in calcination process, accelerates inside white clay
It decomposes, it can be with energy saving.
Preferably, the crusher used is crushed in the S3 as jaw crusher.
Preferably, modifying agent is imitated using sz-3 in modifying agent, q-3 reinforcing agents and sz-2# water resistant reinforcing agents entirely in the S2
One of which.
Preferably, constant humidity curing temperature is 28 DEG C~65 DEG C in the S5, and humidity is 70%~98%, and the period is 24 hours
~48 hours.
Preferably, steam pressure processing is first carried out before the constant humidity maintenance, when pressure is 0.1MPa~0.8MPa, steam pressure is handled
Between be 2 hours~12 hours.
The technique effect and advantage of the present invention：A kind of method producing magnesite board with paper white sludge provided by the invention, with
Traditional technology is compared, and the present invention is by using S1：The processing of paper white sludge：Sawdust is added into paper white sludge slurry and is put into blender
It is sufficiently mixed, is washed for white clay using drum-type vacuum filter；Mud filtration washing is taken out for dregs washer using pre- on-hook,
After removing big particle, it is filtered, is concentrated to give dehydration white clay；White clay after drying is put into kiln and is roasted, is roasted
Temperature is 900~1100 DEG C, and roasting time is 3~10 hours, collects calcined product and grinds to obtain burning of lime sludge object；S2：Using S1
In obtained calcining white clay, the component for matching material weight part of magnesite board is as follows：8-12 parts of burning of lime sludge object, magnesia 12-
0.8-1.5 parts of 16 parts, 6-8 parts of magnesium chloride hexahydrate, 1-3 parts of sawdust, 4-6 parts of perlite and modifying agent；S3：By the dispensing in S2 into
Row is sufficiently mixed, and is crushed, is carried out sieve material using the sieve of 300-500 mesh, obtain particulate matter；S4：Particulate matter in S3 is subjected to cloth
Material, the type that is then pressed into obtain magnesite board base, and magnesite board base is starched using multilayer glass-fiber-fabric, one layer and the paving of layer of non-woven fabric
If compression moulding；S5：Magnesite board base in S4 is demoulded for 12 hours using thermostatic curing；S6：Using closing Double Directional Cutting or
Open Double Directional Cutting method carries out excision forming, which solves environmental pollution and land seizure caused by paper white sludge processing
Problem, while white clay recycling is also reduced into exploitation and consumption of the magnesite board industry to natural limestone resource.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
The every other embodiment obtained is put, shall fall within the protection scope of the present invention.
Embodiment 1
A method of magnesite board being produced with paper white sludge, this produces the method specific steps of magnesite board such as with paper white sludge
Under：
S1：The processing of paper white sludge：Into paper white sludge slurry, addition sawdust is put into blender and is sufficiently mixed, true using drum-type
Empty filter is washed for white clay；Mud filtration washing is taken out for dregs washer using pre- on-hook, after removing big particle, is carried out
It filters, be concentrated to give dehydration white clay；White clay after drying is put into kiln and is roasted, calcination temperature is 900 DEG C, roasting time
It is 3 hours, collects calcined product and grind to obtain burning of lime sludge object；
S2：Using the calcining white clay obtained in S1, the component for matching material weight part of magnesite board is as follows：Burning of lime sludge object
0.8 part of 8 parts, 12 parts of magnesia, 6 parts of magnesium chloride hexahydrate, 1 part of sawdust, 4 parts of perlite and modifying agent；
S3：Dispensing in S2 is sufficiently mixed, is crushed, sieve material is carried out using the sieve of 300 mesh, obtains particulate matter；
S4：Particulate matter in S3 is subjected to cloth, the type that is then pressed into obtains magnesite board base, and magnesite board base uses multilayer
Glass-fiber-fabric, one layer slurry and layer of non-woven fabric laying compression moulding；
S5：Magnesite board base in S4 is demoulded for 12 hours using thermostatic curing；
S6：Excision forming is carried out using closing Double Directional Cutting or open Double Directional Cutting method.
Specifically, the ratio that sawdust is added in the paper white sludge slurry is 10：1, the sawdust can play raising white clay
Intensity, prevent transport, air-dry when it is broken, meanwhile, sawdust plays the role of fuel in calcination process, accelerates inside white clay
It decomposes, it can be with energy saving.
Specifically, being crushed the crusher used in the S3 as jaw crusher.
Specifically, modifying agent imitates modifying agent entirely using sz-3 in the S2.
Specifically, constant humidity curing temperature is 28 DEG C in the S5, humidity 70%, the period is 24 hours.
Specifically, first carrying out steam pressure processing before the constant humidity maintenance, pressure 0.1MPa, steam pressure processing time are 2 small
When.
Embodiment 2
A method of magnesite board being produced with paper white sludge, this produces the method specific steps of magnesite board such as with paper white sludge
Under：
S1：The processing of paper white sludge：Into paper white sludge slurry, addition sawdust is put into blender and is sufficiently mixed, true using drum-type
Empty filter is washed for white clay；Mud filtration washing is taken out for dregs washer using pre- on-hook, after removing big particle, is carried out
It filters, be concentrated to give dehydration white clay；White clay after drying is put into kiln and is roasted, calcination temperature is 1100 DEG C, when roasting
Between be 10 hours, collect calcined product grind to obtain burning of lime sludge object；
S2：Using the calcining white clay obtained in S1, the component for matching material weight part of magnesite board is as follows：Burning of lime sludge object
1.5 parts of 12 parts, 16 parts of magnesia, 8 parts of magnesium chloride hexahydrate, 3 parts of sawdust, 6 parts of perlite and modifying agent；
S3：Dispensing in S2 is sufficiently mixed, is crushed, sieve material is carried out using the sieve of 500 mesh, obtains particulate matter；
S4：Particulate matter in S3 is subjected to cloth, the type that is then pressed into obtains magnesite board base, and magnesite board base uses multilayer
Glass-fiber-fabric, one layer slurry and layer of non-woven fabric laying compression moulding；
S5：Magnesite board base in S4 is demoulded for 12 hours using thermostatic curing；
S6：Excision forming is carried out using closing Double Directional Cutting or open Double Directional Cutting method.
Specifically, the ratio that sawdust is added in the paper white sludge slurry is 10：1, the sawdust can play raising white clay
Intensity, prevent transport, air-dry when it is broken, meanwhile, sawdust plays the role of fuel in calcination process, accelerates inside white clay
It decomposes, it can be with energy saving.
Specifically, being crushed the crusher used in the S3 as jaw crusher.
Specifically, modifying agent uses q-3 reinforcing agents in the S2.
Specifically, constant humidity curing temperature is 65 DEG C in the S5, humidity 98%, the period is 48 hours.
Specifically, first carrying out steam pressure processing before the constant humidity maintenance, pressure 0.8MPa, steam pressure processing time are 12 small
When.
Embodiment 3
A method of magnesite board being produced with paper white sludge, this produces the method specific steps of magnesite board such as with paper white sludge
Under：
S1：The processing of paper white sludge：Into paper white sludge slurry, addition sawdust is put into blender and is sufficiently mixed, true using drum-type
Empty filter is washed for white clay；Mud filtration washing is taken out for dregs washer using pre- on-hook, after removing big particle, is carried out
It filters, be concentrated to give dehydration white clay；White clay after drying is put into kiln and is roasted, calcination temperature is 1000 DEG C, when roasting
Between be 6 hours, collect calcined product grind to obtain burning of lime sludge object；
S2：Using the calcining white clay obtained in S1, the component for matching material weight part of magnesite board is as follows：Burning of lime sludge object
1.1 parts of 10 parts, 14 parts of magnesia, 7 parts of magnesium chloride hexahydrate, 2 parts of sawdust, 5 parts of perlite and modifying agent；
S3：Dispensing in S2 is sufficiently mixed, is crushed, sieve material is carried out using the sieve of 400 mesh, obtains particulate matter；
S4：Particulate matter in S3 is subjected to cloth, the type that is then pressed into obtains magnesite board base, and magnesite board base uses multilayer
Glass-fiber-fabric, one layer slurry and layer of non-woven fabric laying compression moulding；
S5：Magnesite board base in S4 is demoulded for 12 hours using thermostatic curing；
S6：Excision forming is carried out using closing Double Directional Cutting or open Double Directional Cutting method.
Specifically, the ratio that sawdust is added in the paper white sludge slurry is 10：1, the sawdust can play raising white clay
Intensity, prevent transport, air-dry when it is broken, meanwhile, sawdust plays the role of fuel in calcination process, accelerates inside white clay
It decomposes, it can be with energy saving.
Specifically, being crushed the crusher used in the S3 as jaw crusher.
Specifically, modifying agent uses sz-2# water resistant reinforcing agents in the S2.
Specifically, constant humidity curing temperature is 45 DEG C in the S5, humidity 85%, the period is 36 hours.
Specifically, first carrying out steam pressure processing before the constant humidity maintenance, pressure 0.5MPa, steam pressure processing time are 6 small
When.
The present invention is by using S1：The processing of paper white sludge：Into paper white sludge slurry, it is abundant to be put into blender for addition sawdust
Mixing is washed using drum-type vacuum filter for white clay；Using pre- on-hook mud filtration washing, removal are taken out for dregs washer
It after big particle, is filtered, is concentrated to give dehydration white clay；White clay after drying is put into kiln and is roasted, calcination temperature
It it is 900~1100 DEG C, roasting time is 3~10 hours, collects calcined product and grinds to obtain burning of lime sludge object；S2：It is obtained using in S1
The calcining white clay arrived, the component for matching material weight part of magnesite board are as follows：8-12 parts of burning of lime sludge object, 12-16 parts of magnesia,
0.8-1.5 parts of 6-8 parts of magnesium chloride hexahydrate, 1-3 parts of sawdust, 4-6 parts of perlite and modifying agent；S3：Dispensing in S2 is filled
Divide mixing, is crushed, sieve material is carried out using the sieve of 300-500 mesh, obtains particulate matter；S4：Particulate matter in S3 is subjected to cloth, so
Compression moulding obtains magnesite board base afterwards, and magnesite board base is starched using multilayer glass-fiber-fabric, one layer and the laying pressure of layer of non-woven fabric
Type is made；S5：Magnesite board base in S4 is demoulded for 12 hours using thermostatic curing；S6：Using closing Double Directional Cutting or opening
Double Directional Cutting method carries out excision forming, and environmental pollution and land seizure are asked caused by which solves paper white sludge processing
Topic, while white clay recycling is also reduced into exploitation and consumption of the magnesite board industry to natural limestone resource.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of method producing magnesite board with paper white sludge, it is characterised in that：The method for producing magnesite board with paper white sludge
It is as follows：
S1：The processing of paper white sludge：Into paper white sludge slurry, addition sawdust is put into blender and is sufficiently mixed, using drum-type vacuum mistake
Filter is washed for white clay；Mud filtration washing is taken out for dregs washer using pre- on-hook, after removing big particle, was carried out
It filters, be concentrated to give dehydration white clay；White clay after drying is put into kiln and is roasted, calcination temperature is 900~1100 DEG C, roasting
Time is 3~10 hours, collects calcined product and grinds to obtain burning of lime sludge object；
S2：Using the calcining white clay obtained in S1, the component for matching material weight part of magnesite board is as follows：Burning of lime sludge object 8-12
Part, 12-16 parts of magnesia, 6-8 parts of magnesium chloride hexahydrate, 1-3 parts of sawdust, 4-6 parts of perlite and 0.8-1.5 parts of modifying agent；
S3：Dispensing in S2 is sufficiently mixed, is crushed, sieve material is carried out using the sieve of 300-500 mesh, obtains particulate matter；
S4：Particulate matter in S3 is subjected to cloth, the type that is then pressed into obtains magnesite board base, and magnesite board base uses multilayer glass
Cloth, one layer slurry and layer of non-woven fabric laying compression moulding；
S5：Magnesite board base in S4 is demoulded for 12 hours using thermostatic curing；
S6：Excision forming is carried out using closing Double Directional Cutting or open Double Directional Cutting method.
2. a kind of method producing magnesite board with paper white sludge according to claim 1, it is characterised in that：The papermaking is white
The ratio that sawdust is added in mud is 10：1, the sawdust can play the intensity for improving white clay, prevent broken when transporting, air-drying
It is broken, meanwhile, sawdust plays the role of fuel in calcination process, accelerates white clay internal breakup, can be with energy saving.
3. a kind of method producing magnesite board with paper white sludge according to claim 1, it is characterised in that：It is broken in the S3
The broken crusher used is jaw crusher.
4. a kind of method producing magnesite board with paper white sludge according to claim 1, it is characterised in that：Change in the S2
Property agent imitates one of which in modifying agent, q-3 reinforcing agents and sz-2# water resistant reinforcing agents entirely using sz-3.
5. a kind of method producing magnesite board with paper white sludge according to claim 1, it is characterised in that：It is permanent in the S5
Wet curing temperature is 28 DEG C~65 DEG C, and humidity is 70%~98%, and the period is 24 hours~48 hours.
6. a kind of method producing magnesite board with paper white sludge according to claim 1, it is characterised in that：The constant humidity is supported
Steam pressure processing is first carried out before shield, pressure is 0.1MPa~0.8MPa, steam pressure processing time is 2 hours~12 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810400793.4A CN108751920A (en) | 2018-04-28 | 2018-04-28 | A method of producing magnesite board with paper white sludge |
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| CN201810400793.4A CN108751920A (en) | 2018-04-28 | 2018-04-28 | A method of producing magnesite board with paper white sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111116068A (en) * | 2020-01-10 | 2020-05-08 | 广州大学 | Alkaline residue magnesium oxychloride cement and preparation method and application thereof |
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