CN103145136A - Production method of active calcium silicate - Google Patents
Production method of active calcium silicate Download PDFInfo
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- CN103145136A CN103145136A CN2013100070245A CN201310007024A CN103145136A CN 103145136 A CN103145136 A CN 103145136A CN 2013100070245 A CN2013100070245 A CN 2013100070245A CN 201310007024 A CN201310007024 A CN 201310007024A CN 103145136 A CN103145136 A CN 103145136A
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Abstract
The invention provides a production method of active calcium silicate. The production method of the active calcium silicate is characterized by comprising the following steps of calcining limestone, cooling the limestone, screening the limestone to collect calcium oxide particles with the particle size of over 10 mm, conducting incineration to manufacture lime milk, wherein the concentration of the lime milk is 140-190g/L, conducting centrifugal sedimentation on the manufactured lime milk, collecting refined lime milk with the particle size less than 75 mu, filtering sodium silicate feed liquid of pre-desilication, wherein the content of seston in the sodium silicate feed liquid is enabled to be less than 0.1g/L, obtaining sodium silicate fine liquid, conducting a hydrothermal reaction on the manufactured refined lime milk and the sodium silicate fine liquid, conducting slag removal and washing on a product of the hydrothermal reaction, and obtaining the active calcium silicate. The production method of the active calcium silicate can effectively solve the problem that impurity content of the active calcium silicate serving as pack is high.
Description
Technical field
The present invention relates to a kind of production method of active calcium silicate, belong to flyash hi-tech recycling field.
Background technology
Active calcium silicate is that aluminous fly-ash adopts pre-desiliconizing-soda-lime sintering process to extract in the process of aluminum oxide, take milk of lime and desilication product sodium silicate solution as the byproduct of raw material production, belongs to a kind of new packing.Active calcium silicate claims again the high dispersive Calucium Silicate powder, and molecular formula can be expressed as CaOmSiO
2NH
2O, nonpoisonous and tasteless, water insoluble, alcohol and alkali can be dissolved in acid, and the surface exists the siloxy identical with white carbon black and silanol base functional group, and that single particulate mainly is is cellular, stratiform, curling stratiform, appearance bending and fold, specific surface area is up to 251.3m
2/ g, proportion 0.2-0.3g/cm
3, have great adsorption activity, can be used as weighting agent and be widely used in papermaking, rubber, plastic industry, also further siccative and sorbent material are made in deep processing, have simultaneously also represented good effect aspect its heavy metal processing in sewage.
Producing the impurity of introducing from raw material in the Calucium Silicate powder process has: the sandy soil in Wingdale and the magnesium elements that wherein contains; The impurity of introducing in the production process has: use coal to carry out coal ash and the carbon granules that produces in the unslaked lime sintering procedure, and the raw burn that does not exclude in lime emulsifying process processed and burning limestone particle.Because introduce a large amount of impurity in active calcium silicate, make that the whiteness of utilizing the active calcium silicate filler to make product paper only has 75%, dirt count is up to 95/m
2, will badly influence its application in follow-up papermaking, rubber, plastic industry.
Usually, the impurity from raw material is introduced can solve by the method for selecting high-quality Wingdale, but actual production process is too high to the long-distance transportation cost of raw material, will greatly lower the economic benefit of project; The impurity of introducing in the production process, can solve by strengthening the measures such as production management, raising operator level, reinforcement equipment operation maintenance, but in actual moving process, exceed standard if there is a link impurity to occur, will cause the major accident of the discarded and system shutdown of large batch materials.Therefore, the impurity that how effectively to reduce high-content in active calcium silicate is people's problem demanding prompt solution always.
Summary of the invention
Purpose of the present invention is exactly the problem that exists for above-mentioned prior art, has proposed a kind of production method of active calcium silicate, and the method can effectively solve the high problem of foreign matter content in the active calcium silicate filler.
The invention provides a kind of production method of active calcium silicate, comprise the following steps:
With Wingdale through calcining, sieve that to collect granularity be quicklime particles more than 10mm after cooling, and carries out ashing and process and make milk of lime, and the concentration of described milk of lime is 140-190g/L;
Milk of lime obtained above is carried out centrifugal settling, collect granularity less than the refining milk of lime of 75 μ m;
Pre-desiliconizing water glass feed liquid is filtered, make wherein seston content less than 0.1%, obtain the water glass seminal fluid;
Refining milk of lime and the water glass seminal fluid of above-mentioned acquisition are carried out hydro-thermal reaction, and the hydro-thermal reaction product is removed the gred, washs, obtain active calcium silicate.
Further, described pre-desiliconizing water glass feed liquid, main component SiO
2Concentration 45-70g/L, the concentration 122-168g/L of NaOH.
Further, control hydro-thermal reaction temperature 85-95 ℃, time 0.5-1h.
Further, with unslaked lime and the impurity thereof of sieve size less than 10mm, be used for the charge pulp preparation section of alumina producing system.
Further, the sediment that milk of lime separates after centrifugal sinking is for the charge pulp preparation section of alumina producing system.
Further, pre-desiliconizing water glass feed liquid is separated by filtration rear filter residue, is used for the charge pulp preparation section of alumina producing system.
Further, described waste after the hydro-thermal reaction product is removed the gred, washs is used for the charge pulp preparation section of alumina producing system.
Further, utilize swirler to carry out centrifugal settling to described milk of lime and process, overflow is described refining milk of lime, and underflow is used for the charge pulp preparation section of alumina producing system.
Further, utilize vertical leaf that described pre-desiliconizing water glass feed liquid is filtered, overflow is described water glass seminal fluid, and underflow is used for the charge pulp preparation section of alumina producing system.
Compared with prior art, technical scheme of the present invention has following beneficial effect:
1, than selecting the high Wingdale of quality to replace the method for inferior Wingdale, the present invention produces the method for active calcium silicate and has effectively removed from most of impurity of introducing in raw material and production process, rationally utilize poor line stone resource, and greatly reduced transportation cost.
2, come the method for impurity in the production control process by strengthening the production management measure than tradition, the major accident that easily causes the discarded and system shutdown of large batch materials, the production method of active calcium silicate of the present invention has reduced controls the industrial accident that difficulty and mishandle cause, and has guaranteed quality product, has improved yield rate.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the present invention is clearer, the below is clearly and completely described the technical scheme in the embodiment of the present invention, and obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Embodiment 1
A kind of production method of active calcium silicate, concrete grammar is as follows:
Wingdale is cooled to 100 ℃ through the unslaked lime that calcining generates, sieve via the finished product vibratory screening apparatus and remove granularity less than unslaked lime and the impurity of 10mm, the charge pulp preparation section that is used for the alumina producing system, collecting granularity is the above quicklime particles of 10mm, and delivers to lime slaking machine and make the milk of lime that concentration is 180g/L;
The milk of lime that with above-mentioned concentration is 180g/L carries out centrifugal settling with swirler, overflow be granularity less than the refining milk of lime of 75 μ m, underflow is the above centrifugal depositions of granularity 75 μ m, is used for the charge pulp preparation section of alumina producing system;
With main component SiO
2Concentration 60g/L, the pre-desiliconizing water glass feed liquid of NaOH concentration 140g/L is filtered through vertical leaf, makes wherein that seston content is 0.05g/L, and obtaining overflow is the water glass seminal fluid, and underflow is used for the charge pulp preparation section of alumina producing system;
With the refining milk of lime of above-mentioned acquisition and water glass seminal fluid after carrying out hydro-thermal reaction 1h under 90 ℃, and the product of hydro-thermal reaction is removed the gred, washs through low dense matter skim gate, obtain active calcium silicate, and the waste after slagging-off is used for the charge pulp preparation section of alumina producing system;
With active calcium silicate obtained above as applying filler in papermaking, the whiteness of making finished paper is 90%, 10/m of dirt count
2
Embodiment 2
A kind of production method of active calcium silicate, concrete grammar is as follows:
Wingdale is cooled to 90 ℃ through the unslaked lime that calcining generates, sieve via the finished product vibratory screening apparatus and remove granularity less than unslaked lime and the impurity of 10mm, the charge pulp preparation section that is used for the alumina producing system, collecting granularity is the above quicklime particles of 10mm, and delivers to lime slaking machine and make the milk of lime that concentration is 170g/L;
The milk of lime that with above-mentioned concentration is 170g/L carries out centrifugal settling with swirler, overflow be granularity less than the refining milk of lime of 75 μ m, underflow is the above centrifugal depositions of granularity 75 μ m, is used for the charge pulp preparation section of alumina producing system;
With main component SiO
2Concentration 70g/L, the pre-desiliconizing water glass feed liquid of NaOH concentration 150g/L is filtered through vertical leaf, makes wherein that seston content is 0.08g/L, and obtaining overflow is the water glass seminal fluid, and underflow is used for the charge pulp preparation section of alumina producing system;
With the refining milk of lime of above-mentioned acquisition and water glass seminal fluid after carrying out hydro-thermal reaction 1h under 93 ℃, and the product of hydro-thermal reaction is removed the gred, washs through low dense matter skim gate, obtain active calcium silicate, and the waste after slagging-off is used for the charge pulp preparation section of alumina producing system;
With active calcium silicate obtained above as applying filler in papermaking, the whiteness of making finished paper is 93%, 8/m of dirt count
2
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. the production method of an active calcium silicate, is characterized in that, comprises the following steps:
With Wingdale through calcining, sieve that to collect granularity be quicklime particles more than 10mm after cooling, and carries out ashing and process and make milk of lime, and the concentration of described milk of lime is 140-190g/L;
Milk of lime obtained above is carried out centrifugal settling, collect granularity less than the refining milk of lime of 75 μ m;
Pre-desiliconizing water glass feed liquid is filtered, make wherein seston content less than 0.1g/L, obtain the water glass seminal fluid;
Refining milk of lime and the water glass seminal fluid of above-mentioned acquisition are carried out hydro-thermal reaction, and the hydro-thermal reaction product is removed the gred, washs, obtain active calcium silicate.
2. production method according to claim 1, is characterized in that, described pre-desiliconizing water glass feed liquid, main component SiO
2Concentration 45-70g/L, the concentration 122-168g/L of NaOH.
3. production method according to claim 1, is characterized in that, control hydro-thermal reaction temperature 85-95 ℃, and time 0.5-1h.
4. production method according to claim 1, is characterized in that, with unslaked lime and the impurity thereof of sieve size less than 10mm, is used for the charge pulp preparation section of alumina producing system.
5. production method according to claim 1, is characterized in that, the sediment that milk of lime separates after centrifugal sinking is for the charge pulp preparation section of alumina producing system.
6. production method according to claim 1, is characterized in that, pre-desiliconizing water glass feed liquid is separated by filtration rear filter residue, is used for the charge pulp preparation section of alumina producing system.
7. production method according to claim 1, is characterized in that, described waste after the hydro-thermal reaction product is removed the gred, washs is used for the charge pulp preparation section of alumina producing system.
8. production method according to claim 1, is characterized in that, utilizes swirler to carry out centrifugal settling to described milk of lime and process, and overflow is described refining milk of lime, and underflow is used for the charge pulp preparation section of alumina producing system.
9. production method according to claim 1, is characterized in that, utilizes vertical leaf that described pre-desiliconizing water glass feed liquid is filtered, and overflow is described water glass seminal fluid, and underflow is used for the charge pulp preparation section of alumina producing system.
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539137A (en) * | 2013-11-07 | 2014-01-29 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Method for producing xonotlite by taking pulverized fuel ash as raw material |
| CN104030305A (en) * | 2014-06-27 | 2014-09-10 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Method for preparing active calcium silicate |
| CN104045090A (en) * | 2014-06-05 | 2014-09-17 | 嵊州市求是节能材料有限公司 | Production process of ultralight high-temperature calcium silicate insulation product |
| CN104045091A (en) * | 2014-06-27 | 2014-09-17 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Method for producing active calcium silicate by using desiliconized alkaline liquor |
| CN104085896A (en) * | 2014-07-18 | 2014-10-08 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Preparation method of activated calcium silicate |
| CN104261418A (en) * | 2014-10-24 | 2015-01-07 | 山西玉竹活性石灰制造有限公司 | Method for preparing microporus, high-activity and low-density calcium silicate |
| CN104326480A (en) * | 2014-10-23 | 2015-02-04 | 宋宝祥 | Method for preparing micro-hole calcium silicate by adopting water glass and lime emulsion |
| CN104975535A (en) * | 2015-06-25 | 2015-10-14 | 广西白莹纸业有限公司 | Synthesizing method of aggregate fluffy porous calcium silicate |
| CN105084376A (en) * | 2015-08-12 | 2015-11-25 | 贵州盘县紫森源（集团）实业发展投资有限公司 | Method for recycling alkali generated when calcium silicate is prepared from low-modulus water glass |
| CN105621379A (en) * | 2016-04-13 | 2016-06-01 | 四川绵竹市盘龙矿物质有限责任公司 | Improved three-stage neutralization crystallization method in feed-grade calcium hydrogen phosphate production technique |
| CN106542534A (en) * | 2015-09-18 | 2017-03-29 | 中国科学院过程工程研究所 | A kind of method of impurity natrium in de-sodium agent removing afwillite |
| CN107651866A (en) * | 2017-09-30 | 2018-02-02 | 徐州市伟华炉料有限公司 | A kind of preparation method of sierozem power |
| CN107686118A (en) * | 2017-08-23 | 2018-02-13 | 内蒙古普诺思新材料科技有限公司 | A kind of method that liquid phase dynamic autoclaved technology method prepares calcium silicate powder |
| CN107792945A (en) * | 2017-11-13 | 2018-03-13 | 常州美帛纺织品有限公司 | One kind is used to handle high-salt wastewater complexing agent |
| CN108212075A (en) * | 2018-01-19 | 2018-06-29 | 临沂三禾生物质科技有限公司 | It is a kind of can efficient absorption and catalytic degradation formaldehyde novel porous nano material preparation method |
| CN108271771A (en) * | 2018-02-09 | 2018-07-13 | 北京交通大学 | A kind of eco-friendly pesticide control helplessness agent and preparation method thereof |
| CN108452765A (en) * | 2018-02-09 | 2018-08-28 | 内蒙古工业大学 | The method of porous silicon adsorption material and porous silicon adsorption material are prepared using low-grade diatomite |
| CN108821300A (en) * | 2018-08-06 | 2018-11-16 | 东北大学 | One kind preparing CaSiO by discarded silicon slag3Method |
| CN109482135A (en) * | 2018-11-06 | 2019-03-19 | 广东海洋大学 | A kind of preparation method and application of calcium silicates adsorbent material |
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Cited By (29)
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| CN103539137A (en) * | 2013-11-07 | 2014-01-29 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Method for producing xonotlite by taking pulverized fuel ash as raw material |
| CN104045090A (en) * | 2014-06-05 | 2014-09-17 | 嵊州市求是节能材料有限公司 | Production process of ultralight high-temperature calcium silicate insulation product |
| CN104030305A (en) * | 2014-06-27 | 2014-09-10 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Method for preparing active calcium silicate |
| CN104045091A (en) * | 2014-06-27 | 2014-09-17 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Method for producing active calcium silicate by using desiliconized alkaline liquor |
| CN104030305B (en) * | 2014-06-27 | 2015-11-18 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | A kind of preparation method of active calcium silicate |
| CN104045091B (en) * | 2014-06-27 | 2016-03-16 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | A kind of method utilizing desiliconization alkali lye to produce active calcium silicate |
| CN104085896A (en) * | 2014-07-18 | 2014-10-08 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Preparation method of activated calcium silicate |
| US10017421B2 (en) | 2014-07-18 | 2018-07-10 | Datang International High Alumina Coal R & D Center | Method for preparing active calcium silicate |
| CN104085896B (en) * | 2014-07-18 | 2015-12-09 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | The preparation method of active calcium silicate |
| CN104326480B (en) * | 2014-10-23 | 2017-08-25 | 宋宝祥 | The method that a kind of use waterglass and lime slurry prepare microporous calcium silicate |
| CN104326480A (en) * | 2014-10-23 | 2015-02-04 | 宋宝祥 | Method for preparing micro-hole calcium silicate by adopting water glass and lime emulsion |
| CN104261418A (en) * | 2014-10-24 | 2015-01-07 | 山西玉竹活性石灰制造有限公司 | Method for preparing microporus, high-activity and low-density calcium silicate |
| CN104975535A (en) * | 2015-06-25 | 2015-10-14 | 广西白莹纸业有限公司 | Synthesizing method of aggregate fluffy porous calcium silicate |
| CN105084376A (en) * | 2015-08-12 | 2015-11-25 | 贵州盘县紫森源（集团）实业发展投资有限公司 | Method for recycling alkali generated when calcium silicate is prepared from low-modulus water glass |
| CN106542534A (en) * | 2015-09-18 | 2017-03-29 | 中国科学院过程工程研究所 | A kind of method of impurity natrium in de-sodium agent removing afwillite |
| CN105621379A (en) * | 2016-04-13 | 2016-06-01 | 四川绵竹市盘龙矿物质有限责任公司 | Improved three-stage neutralization crystallization method in feed-grade calcium hydrogen phosphate production technique |
| CN107686118B (en) * | 2017-08-23 | 2020-07-28 | 内蒙古普诺思新材料科技有限公司 | Method for preparing calcium silicate powder by liquid-phase dynamic hydrothermal synthesis method |
| CN107686118A (en) * | 2017-08-23 | 2018-02-13 | 内蒙古普诺思新材料科技有限公司 | A kind of method that liquid phase dynamic autoclaved technology method prepares calcium silicate powder |
| CN107651866A (en) * | 2017-09-30 | 2018-02-02 | 徐州市伟华炉料有限公司 | A kind of preparation method of sierozem power |
| CN107792945A (en) * | 2017-11-13 | 2018-03-13 | 常州美帛纺织品有限公司 | One kind is used to handle high-salt wastewater complexing agent |
| CN107792945B (en) * | 2017-11-13 | 2021-03-05 | 陈云兰 | Complexing agent for treating high-salinity wastewater |
| CN108212075B (en) * | 2018-01-19 | 2020-11-27 | 临沂三禾生物质科技有限公司 | Preparation method of novel porous nano material capable of efficiently adsorbing and catalytically degrading formaldehyde |
| CN108212075A (en) * | 2018-01-19 | 2018-06-29 | 临沂三禾生物质科技有限公司 | It is a kind of can efficient absorption and catalytic degradation formaldehyde novel porous nano material preparation method |
| CN108452765A (en) * | 2018-02-09 | 2018-08-28 | 内蒙古工业大学 | The method of porous silicon adsorption material and porous silicon adsorption material are prepared using low-grade diatomite |
| CN108271771A (en) * | 2018-02-09 | 2018-07-13 | 北京交通大学 | A kind of eco-friendly pesticide control helplessness agent and preparation method thereof |
| CN108821300A (en) * | 2018-08-06 | 2018-11-16 | 东北大学 | One kind preparing CaSiO by discarded silicon slag3Method |
| CN108821300B (en) * | 2018-08-06 | 2021-02-09 | 东北大学 | Preparation of CaSiO from waste silicon slag3Method (2) |
| CN109482135A (en) * | 2018-11-06 | 2019-03-19 | 广东海洋大学 | A kind of preparation method and application of calcium silicates adsorbent material |
| CN109482135B (en) * | 2018-11-06 | 2022-02-22 | 广东海洋大学 | Preparation method and application of calcium silicate adsorption material |
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Inventor after: Zhang Xianqi Inventor after: Yan Shaoyong Inventor after: Zhang Tingan Inventor after: Xin Weidong Inventor after: Lv Guozhi Inventor after: Zhang Chengwei Inventor after: Wang Lijuan Inventor after: Zhao Dahu Inventor after: Du Xiaorong Inventor before: Zhang Xianqi Inventor before: Yan Shaoyong |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG XIANQI YAN SHAOYONG TO: ZHANG XIANQI YAN SHAOYONG ZHANG TINGAN XIN WEIDONG LV GUOZHI ZHANG CHENGWEI WANG LIJUAN ZHAO DAHU DU XIAORONG |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130612 |