CN110304845A - The method for preparing quick lime with the dry slag of calcium carbide and producing nanometer calcium carbonate using it - Google Patents
The method for preparing quick lime with the dry slag of calcium carbide and producing nanometer calcium carbonate using it Download PDFInfo
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- CN110304845A CN110304845A CN201910776036.1A CN201910776036A CN110304845A CN 110304845 A CN110304845 A CN 110304845A CN 201910776036 A CN201910776036 A CN 201910776036A CN 110304845 A CN110304845 A CN 110304845A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
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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
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
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- Ceramic Engineering (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses the methods for preparing quick lime with the dry slag of calcium carbide and producing nanometer calcium carbonate using it, by the way that the method for carbide slag washing drying, calcining is produced quick lime, method again through digestion, leaching, carbonization produces calcite type nanometer calcium carbonate, purity is greater than 99%, solve the handling problems of the dry slag of calcium carbide, the high value added utilization for realizing carbide slag, to realize the sustainable development of PVC industry.
Description
Technical field
The invention belongs to carbide slag resource utilization development fields, in particular to one kind is with calcium carbonate electricity as main component
The dry slag of stone obtains quick lime, then obtains the process route of nanometer calcium carbonate through digestion, leaching, carbonization through washing drying, calcining.
Background technique
Carbide slag is the by-product of carbide acetylene method production vinyl chloride, and slag liquid is in strong basicity, and pH value can be made up to 12 or more
At soil and water pollution.Since its quantity is big, transportation cost is high, and carbide slag slurries water clock, dust on the way during transportation
It flies upward, environment is caused seriously to pollute.
According to calculating, 1 ton of calcium carbide can produce about 10 tons of carbide slag slurries, i.e. about 1.2 tons of dry slags of calcium carbide, and China generates about every year
20000000 tons of carbide slags, accumulation over the years is up to hundred million tons.The accumulation of these carbide slags does not only take up a large amount of soils, causes pole to environment yet
Big pollution.
Currently, the comprehensive utilization of calcium carbide waste slag includes carbide slag cement, carbide slag brickmaking, production chemical products, life
Produce construction material and for environmental improvement etc..Although there are many utilization method of calcium carbide waste slag, respectively there are an advantage and disadvantage, every kind of method
Treatment effect is all both advantageous and disadvantageous, by the production capacity, the discharge rate of carbide slag, environmental protection standard, ambient environmental factors of calcium carbide process PVC
And the restriction of economic benefit.
It is matrix using the calcium carbide waste slag during PVC industry production in Xinjiang, effectively extracts the calcium in raw calcium carbide waste slag
Resource designs and develops feasible, reasonable, effective experimental program, is prepared into high added value, is widely used, the calcium base of low cost
The research of industrial powder (calcium hydroxide, calcium oxide, calcium carbonate etc.) has therefore how certain advance produced PVC
The carbide slag comprehensive utilization that generates in journey is turned waste into wealth, and not only reduces pollution, but also provide for the resource utilization of carbide slag
Method and approach have great importance to the sustainable development of PVC Industry.
Summary of the invention
The present invention provides a kind of method for preparing quick lime with the dry slag of calcium carbide and producing nanometer calcium carbonate using it, solves electricity
The handling problems of the dry slag of stone, realize the high value added utilization of carbide slag, to realize the sustainable development of PVC industry.
It is a kind of to prepare quick lime with the dry slag of calcium carbide and included the following steps: using the method that it produces nanometer calcium carbonate
(1) carbide slag pre-processes: the dry slag of calcium carbide being washed after crushed, dries pretreatment；
(2) carbide slag is calcined: the dry slag of calcium carbide after drying is obtained quick lime, calcination temperature 700 by high-temperature calcinationoC~
1100oC, calcination time 1~5 hour；The dry slag of calcium carbide used, main component are calcium carbonate, and water content is less than 5%；
(3) step (2) obtained quick lime quicklime slaking and ammonium chloride leaching: is passed through into digestion-ammonium chloride leaching-mistake
After filter processing, after filtering out precipitating, calcium chloride solution is obtained, wherein the mass ratio of quick lime and water is 1:10~1:30, raw stone
The mass ratio of ash and ammonium chloride is 1:0.7~1:1.3；
(4) it is carbonized: a certain amount of triethanolamine, sodium carbonate liquor is added in step (3) obtained calcium chloride solution,
Middle triethanolamine additional amount is the 0.5%~5% of liquor capacity, reaction temperature 20oC~100oC；
(5) by the obtained solution progress by the blending of triethanolamine, sodium carbonate liquor and calcium chloride solution together of step (4)
After separation of solid and liquid, calcite type nanometer calcium carbonate is obtained after precipitating is dry.
Gained nanometer calcium carbonate of the invention is calcite type calcium carbonate, and purity is greater than 99%.
The invention has the advantages that calcium carbide waste slag is prepared into quick lime using simple and easy method preparation, and use it
The nanometer calcium carbonate for producing high-purity, realizes the high value added utilization of calcium carbide waste slag " turning waste into wealth ".Not only solve calcium carbide
Land seizure and problem of environmental pollution in slag stacking process, moreover it is possible to bring certain economic benefit, to realize PVC industry can
Sustainable development is of great significance.
Specific embodiment
Embodiment 1: being 1.5% by water content, and main component is that the dry slag of calcium carbide of calcium carbonate is ground into a powder, and is washed with clear water,
It filters, is placed in baking oven in 110oC drying.It places it in Muffle furnace again, in 950oIt is calcined 2 hours under C, obtains calcium oxide and contain
The quick lime that amount is 86.13%.Quick lime obtained by 5.0g is taken, 70ml water is added, by 7.15gNH4It is molten that Cl is slowly added into carbide slag
In liquid, 40o60min is reacted under the conditions of C, 400r/min, is filtered to remove precipitating, obtains calcium chloride solution, then be added thereto
2ml triethanolamine and 50ml0.5mol/L sodium carbonate liquor, 20o30min is reacted under conditions of C, 400r/min, is filtered, point
After not washed with distilled water, dehydrated alcohol, then gained is precipitated and is placed in baking oven, 110oC dries 2h, and obtaining purity is 99.01%
Calcite type nanometer calcium carbonate.
Embodiment 2: being 2.1% by water content, and main component is that the dry slag of calcium carbide of calcium carbonate is ground into a powder, and is washed with clear water,
It filters, is placed in baking oven in 110oC drying.It places it in Muffle furnace again, in 1000oIt is calcined 3 hours under C, obtains calcium oxide and contain
The quick lime that amount is 87.24%.Quick lime obtained by 5.0g is taken, 100ml water is added, by 8.24gNH4Cl is slowly added into carbide slag
In solution, 20o60min is reacted under the conditions of C, 300r/min, is filtered to remove precipitating, obtains calcium chloride solution, then be added to it
3ml triethanolamine and 50ml0.5mol/L sodium carbonate liquor, 40o60min is reacted under conditions of C, 400r/min, is filtered, point
After not washed with distilled water, dehydrated alcohol, then gained is precipitated and is placed in baking oven, 110oC dries 2h, and obtaining purity is 99.17%
Calcite type nanometer calcium carbonate.
Embodiment 3: being 4.7% by water content, and main component is that the dry slag of calcium carbide of calcium carbonate is ground into a powder, and is washed with clear water,
It filters, is placed in baking oven in 110oC drying.It places it in Muffle furnace again, in 1100oIt is calcined 3 hours under C, obtains calcium oxide and contain
The quick lime that amount is 88.68%.Quick lime obtained by 5.0g is taken, 50ml water is added, by 9.02gNH4It is molten that Cl is slowly added into carbide slag
In liquid, 50o60min is reacted under the conditions of C, 400r/min, is filtered to remove precipitating, obtains calcium chloride solution, then 5ml is added to it
Triethanolamine and 25ml1.0mol/L sodium carbonate liquor, 60o30min is reacted under conditions of C, 400r/min, is filtered, is used respectively
After distilled water, dehydrated alcohol washing, then gained is precipitated and is placed in baking oven, 110oC dries 2h, obtains the side that purity is 99.08%
Solve stone-type nanometer calcium carbonate.
Claims (1)
1. a kind of method for preparing quick lime with the dry slag of calcium carbide and producing nanometer calcium carbonate using it, comprising the following steps:
(1) carbide slag pre-processes: the dry slag of calcium carbide being washed after crushed, dries pretreatment；
(2) carbide slag is calcined: the dry slag of calcium carbide after drying is obtained quick lime, calcination temperature 700 by high-temperature calcinationoC~
1100oC, calcination time 1~5 hour；The dry slag of calcium carbide used, main component are calcium carbonate, and water content is less than 5%；
(3) step (2) obtained quick lime quicklime slaking and ammonium chloride leaching: is passed through into digestion-ammonium chloride leaching-mistake
After filter processing, after filtering out precipitating, calcium chloride solution is obtained, wherein the mass ratio of quick lime and water is 1:10~1:30, raw stone
The mass ratio of ash and ammonium chloride is 1:0.7~1:1.3；
(4) it is carbonized: a certain amount of triethanolamine, sodium carbonate liquor is added in step (3) obtained calcium chloride solution,
Middle triethanolamine additional amount is the 0.5%~5% of liquor capacity, reaction temperature 20oC~100oC；
(5) by the obtained solution progress by the blending of triethanolamine, sodium carbonate liquor and calcium chloride solution together of step (4)
After separation of solid and liquid, calcite type nanometer calcium carbonate is obtained after precipitating is dry.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117263533A (en) * | 2023-09-19 | 2023-12-22 | 西南科技大学 | Porous spherical calcium oxide powder with micro-nano structure and preparation method and application thereof |
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| CN101020579A (en) * | 2006-03-27 | 2007-08-22 | 中国人民解放军国防科学技术大学 | Process of preparing high purity light calcium carbonate fine powder with carbide residue |
| CN101264920A (en) * | 2008-04-17 | 2008-09-17 | 贵州大学 | Method for preparing micro-fine and ultra-fine calcium carbonate of different crystal forms from carbide slag |
| KR20110111762A (en) * | 2010-04-05 | 2011-10-12 | 안현정 | Manufacturing method of nano calcium carbonate |
| CN103626218A (en) * | 2013-12-05 | 2014-03-12 | 天津市圣天石工贸有限公司 | Process for producing calcium carbonate by utilizing waste carbide slag |
| CN107140671A (en) * | 2017-07-12 | 2017-09-08 | 雅安晶玉新材料有限公司 | A kind of nano-calcium carbonate powder and preparation method thereof |
| CN107381611A (en) * | 2017-07-12 | 2017-11-24 | 雅安晶玉新材料有限公司 | A kind of artificial stone is with modified nano calcium carbonate powder and preparation method thereof and resin based artificial stone material |
| CN107540009A (en) * | 2017-08-22 | 2018-01-05 | 北京依依星科技有限公司 | A kind of method that nano-calcium carbonate is prepared using carbide slag |
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- 2019-08-22 CN CN201910776036.1A patent/CN110304845A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101020579A (en) * | 2006-03-27 | 2007-08-22 | 中国人民解放军国防科学技术大学 | Process of preparing high purity light calcium carbonate fine powder with carbide residue |
| CN101264920A (en) * | 2008-04-17 | 2008-09-17 | 贵州大学 | Method for preparing micro-fine and ultra-fine calcium carbonate of different crystal forms from carbide slag |
| KR20110111762A (en) * | 2010-04-05 | 2011-10-12 | 안현정 | Manufacturing method of nano calcium carbonate |
| CN103626218A (en) * | 2013-12-05 | 2014-03-12 | 天津市圣天石工贸有限公司 | Process for producing calcium carbonate by utilizing waste carbide slag |
| CN107140671A (en) * | 2017-07-12 | 2017-09-08 | 雅安晶玉新材料有限公司 | A kind of nano-calcium carbonate powder and preparation method thereof |
| CN107381611A (en) * | 2017-07-12 | 2017-11-24 | 雅安晶玉新材料有限公司 | A kind of artificial stone is with modified nano calcium carbonate powder and preparation method thereof and resin based artificial stone material |
| CN107540009A (en) * | 2017-08-22 | 2018-01-05 | 北京依依星科技有限公司 | A kind of method that nano-calcium carbonate is prepared using carbide slag |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117263533A (en) * | 2023-09-19 | 2023-12-22 | 西南科技大学 | Porous spherical calcium oxide powder with micro-nano structure and preparation method and application thereof |
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