CN1158292A - Flowing prodn. tech. of calcium silicate sheet - Google Patents
Flowing prodn. tech. of calcium silicate sheet Download PDFInfo
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- CN1158292A CN1158292A CN 96103011 CN96103011A CN1158292A CN 1158292 A CN1158292 A CN 1158292A CN 96103011 CN96103011 CN 96103011 CN 96103011 A CN96103011 A CN 96103011A CN 1158292 A CN1158292 A CN 1158292A
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- calcium silicate
- slurry flowing
- silicate board
- slip
- flowing process
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Abstract
A slurry flowing technology for mfg. calcium silicate plate includes preparing slurry from quartz powder, hydrated lime powder and fibrous material including paper pulp, making blank, steam curing and smoothing by grinding. For its raw materials, the ratio of fibre is 15-20%, the ratio of mid wool is 20%, the ratio of calcium to silicon is 0.3-0.35. Its advantages are wide range of regulating the ratio of each raw material, high productivity increased by 20%, and high strength of product.
Description
The present invention relates to a kind of with reinforcing materials such as calcareous, siliceous and fibers with moulding, the calcium silicate board that steam press maintenance forms.
Calcium silicate board has lightweight, superior function such as does not fire, can saw, can bore, and is subjected to the market parent day by day to look at; Net cage is copied and is followed the example of the calcium silicate board production technology and mainly be to use calcium silicates solvent or diluent slurry (its concentration is generally 5～8%) dewatering and filtering on the wire side of garden net wheel in the net cage to form bonding layer, bonding back is forming " the thin bed of material " for no reason with 2～4 bonding layers on the felt, the thin bed of material is through forming wet base on the forming tube that is wrapped in running after the vacuum dehydration, by the forming tube compression system wet base being exerted pressure makes it to dewater closely knit, takes off on promptly by forming tube after wet base reaches required thickness and is sent through steam-cured sanding by conveyer belt and make; Copy the machine of getting for a garden of raising output net wheel and generally be provided with 2～4 net cages.Garden net wheel is copied and is got the machine equipment complexity, power consumption is big, wire side will often upgrade, and when slip filtered at wire side, the slip particle ran off big, when especially slip limy ratio is big, material base moisture content is big, good water-retaining property, the easy sticky wire side of slip, stick into type tube and cause and yield poorly, also limited the adjusting range of prescription.
The objective of the invention is to change base production technology just, improve output, adapt to the arts demand of various rational formula slips, improve product strength.
Fiber reinforcement type calcium silicate board of the present invention is by fiber substances such as silica flour, slaked lime powder, paper pulp, and through slurrying, slurry flowing machine starching system is base just, and it is steam-cured to pressurize, and sanding makes.
Fibre reinforced materials mainly is asbestos, paper pulp, medium-alkali glass fiber, and it accounts for total amount is 15～20%, and middle long cotton accounts for 25%, and pin suede is than 30～40: 70～60; Base material in the calcium silicate board prescription is slaked lime powder and silica flour; The good water-retaining property of material base is easy to generate and sticks into the type tube phenomenon, must increase the total amount of fiber and the ratio of raising medium-length fibre, and the moisture content that reduces material base when pulling base is to improve into base output.
With calcium hydroxide, silica flour is the calcium silicate board batching of base material, and calcium, silicon are advisable with 0.3～0.35 than (C/S mole ratio).
Can the mole ratio of the siliceous and calcareous material of choose reasonable be to the fire resistance of goods, intensity and become base to have a significant impact by high-quality.At first, the hydrated product that generated in press steaming hydro-thermal reaction of calcium hydroxide in the base material and quartz sand mainly is a Tuo Bomolai stone.If react completely, calcium, silicon mole ratio (C/S) theoretical in the batching should be 5/6, be C/S=0.83 by head, but in practice the chemical reaction of calcium hydroxide and silica flour carry out just occurring in the process surface of quartz sand powder and gradually from outward appearance to inner essence the top layer that makes peel off endosmosis, herewith quartz sand can not participate in reaction fully in tens hours pressure steaming process, calcium hydroxide has surplus, thereby when base material be high silico-calcium during than batching, remove Tuo Bomolai stone and free sio in the hyrate of calcium silicates sheet material
2Also have more Free Ca (oH) outward,
2Exist.Holder ripple mullite and free sio
2Content helps the fire resistance of sheet material and the raising of intensity more, and the Free Ca of volume (oH)
2Existence the fire resistance and the intensity of goods is all had negative effect.If calcareous material composition ratio is too high, then material base and forming tube bonding force are big, can't pull base, and product strength is low.
In addition, in pressing the steaming hydro-thermal reaction, generate hydrated product Tuo Bomolai stone, in prescription, add 1～10% Tuo Bomolai stone, with the formation growth of induced nuclei for quickening calcium hydroxide and quartz sand.
Slurry flowing machine such as accompanying drawing 1 that the present invention adopts, it comprises slip case 1, feeder 2, felt 3, vacuum tank 4, support 5, breast roll 6, forming tube 7, wherein slip case 1, feeder 2, felt 3, forming tube 7 are streamlined position relation, vacuum tank 4 contact felt 3 back sides, and a plurality of vacuum tanks are arranged.
Slip case 1 can be three by stirring overflow-type, and three agitators 9 and slip liquid level hurdle 10 are arranged in casing 8.
Slurry flowing process making sheet becomes base technology to be divided into three dehydration sections, and first section is the nature dehydration, and for about felt 2m, second section is the negative pressure dehydration, and the 3rd section is the forming tube pressurizing and dehydrating.
Slurry flowing process system calcium silicate board technology of the present invention has only replaced several net cages with head box, equipment is tubeization greatly, accommodation to slip is wide, the output height, and water consumption is few, maintenance of equipment is few, the running rate height, the prescription adjusting range is wide, finished product rupture strength 〉=14MPa, vertically rupture strength 〉=11MPa is better than national standard.
Accompanying drawing 1 is the slurry flowing machine schematic diagram.
Accompanying drawing 2 is the head box schematic diagram.
Embodiment: proportioning: the fiber total amount is 15～20%, middle long cotton accounts for 25%, pin suede was than 36: 64, calcium hydroxide, silica flour (C/S restrains proportion by subtraction) 0.3～0.35 pulp density 10～12%, the slip moisture content that is taped against on the felt through head box is 88～90%, through first section dehydration 10～12%,, make that the bed of material is moisture to be controlled at 38～45% through the second dehydration section; The 3rd dehydration section pressurizing and dehydrating rate is controlled at 8～12% mat moisture contents 30～33%, through steam-cured, sanding.Panel density 1.15～1.2g/cm
2Rupture strength can reach 14～16MPA.
Claims (4)
1, a kind of slurry flowing process calcium silicate board production technology is made through slurrying, first base, steam-cured, sanding operation by fiber substances such as silica flour, slaked lime powder, paper pulp, it is characterized in that making base just by the slurry flowing process starching; Raw material constitutes: 1, fibrous material is mainly asbestos, paper pulp, medium-alkali glass fiber, and fiber accounts for total amount 15～20%, and middle long cotton accounts for 20～30%, and pin suede ratio is 30～40: 70～60; 2, calcareous material and siliceous material are 0.3～0.35 than (being the C/S mole ratio).
2, according to the slurry flowing process calcium silicate board production technology of claim 1, it is further characterized in that slurry flowing machine is made of slip case 1, feeder 2, felt 3, vacuum tank 4, support 5, breast roll 6, forming tube 7, slip case 1, feeder 2, felt 3, forming tube 7 positions are streamlined relation, and vacuum tank 4 is connected to felt 3 back sides.
3, according to the slurry flowing process calcium silicate board production technology of claim 1 and 2, it is further characterized in that slip case 1 is three and stirs overflow-types, it by slip box body 8 and in have three agitators 9 and slip liquid level hurdle 10 to constitute.
4, according to the slurry flowing process calcium silicate board production technology of claim 1, it is further characterized in that and contains 1～10% calcium silicates nucleus in prescription.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96103011 CN1158292A (en) | 1996-02-26 | 1996-02-26 | Flowing prodn. tech. of calcium silicate sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96103011 CN1158292A (en) | 1996-02-26 | 1996-02-26 | Flowing prodn. tech. of calcium silicate sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1158292A true CN1158292A (en) | 1997-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96103011 Pending CN1158292A (en) | 1996-02-26 | 1996-02-26 | Flowing prodn. tech. of calcium silicate sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1158292A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979355A (en) * | 2010-10-07 | 2011-02-23 | 宜春市金特建材实业有限公司 | Composite fiber calcium silicate board and preparation method thereof |
| CN104016628A (en) * | 2014-06-24 | 2014-09-03 | 洛斐尔建材（沈阳）集团有限公司 | Environmental-friendly calcium silicate board and production process thereof |
| CN105218059A (en) * | 2015-10-19 | 2016-01-06 | 武汉钢铁(集团)公司 | Low-grade limestone prepares the method for calcium silicate board |
| CN111410503A (en) * | 2020-04-27 | 2020-07-14 | 肇庆三乐自动化装备制造有限公司 | Calcium silicate board production line raw material batching control system and method |
| CN112408929A (en) * | 2020-11-04 | 2021-02-26 | 河南省建筑工程质量检验测试中心站有限公司 | Environment-friendly calcium silicate board produced based on slag powder and preparation method thereof |
-
1996
- 1996-02-26 CN CN 96103011 patent/CN1158292A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979355A (en) * | 2010-10-07 | 2011-02-23 | 宜春市金特建材实业有限公司 | Composite fiber calcium silicate board and preparation method thereof |
| CN101979355B (en) * | 2010-10-07 | 2012-07-25 | 宜春市金特建材实业有限公司 | Composite fiber calcium silicate board and preparation method thereof |
| CN104016628A (en) * | 2014-06-24 | 2014-09-03 | 洛斐尔建材（沈阳）集团有限公司 | Environmental-friendly calcium silicate board and production process thereof |
| CN105218059A (en) * | 2015-10-19 | 2016-01-06 | 武汉钢铁(集团)公司 | Low-grade limestone prepares the method for calcium silicate board |
| CN105218059B (en) * | 2015-10-19 | 2017-06-13 | 武汉钢铁(集团)公司 | The method that low-grade limestone prepares calcium silicate board |
| CN111410503A (en) * | 2020-04-27 | 2020-07-14 | 肇庆三乐自动化装备制造有限公司 | Calcium silicate board production line raw material batching control system and method |
| CN112408929A (en) * | 2020-11-04 | 2021-02-26 | 河南省建筑工程质量检验测试中心站有限公司 | Environment-friendly calcium silicate board produced based on slag powder and preparation method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |