CN110606500A - Production process of calcium carbonate-magnesium oxide composite nano material - Google Patents
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B82Y40/00—Manufacture or treatment of nanostructures
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- 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
- C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
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- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
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- C01F11/18—Carbonates
- C01F11/185—After-treatment, e.g. grinding, purification, conversion of crystal morphology
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- C01F5/02—Magnesia
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- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/02—Magnesia
- C01F5/06—Magnesia by thermal decomposition of magnesium compounds
- C01F5/08—Magnesia by thermal decomposition of magnesium compounds by calcining magnesium hydroxide
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
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- C08K2201/00—Specific properties of additives
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Abstract
The invention discloses a production process of a calcium carbonate-magnesium oxide composite nano material, which comprises the following steps: adding calcium carbonate, magnesium oxide, a coupling agent and tap water into a proportioning tank, uniformly stirring to prepare calcium carbonate-magnesium oxide slurry, conveying the calcium carbonate-magnesium oxide slurry into a ball mill through a conveying pump for treatment, conveying the treated slurry into a centrifugal machine through the conveying pump for separation, conveying the separated water into the proportioning tank for recycling after the calcium carbonate-magnesium oxide slurry is subjected to separation treatment, conveying the separated calcium carbonate-magnesium oxide slurry into a drying machine for drying treatment to prepare a nano calcium carbonate-magnesium oxide composite material, and conveying the water vapor generated in the drying process into the proportioning tank for recycling.
Description
Technical Field
The invention relates to the field of nano materials, in particular to a production process of a calcium carbonate-magnesium oxide composite nano material.
Background
The nano composite material is a composite system which takes a matrix such as resin, rubber, ceramic, metal and the like as a continuous phase, takes modifiers such as nano-sized metal, semiconductor, rigid particles and other inorganic particles, fibers, carbon nanotubes and the like as a dispersed phase, and uniformly disperses the modifiers in the matrix material by a proper preparation method to form a phase containing the nano-sized material, and the material of the system is called nano composite material.
At present, the existing calcium carbonate-magnesium oxide composite nano material has a complex production process, and harmful substances are easily generated in the production process, so that the environment is polluted and the calcium carbonate-magnesium oxide composite nano material is harmful to human bodies.
Disclosure of Invention
The invention aims to provide a production process of a calcium carbonate-magnesium oxide composite nano material, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the production process of the calcium carbonate-magnesium oxide composite nano material is characterized by comprising the following steps: the production process comprises the following steps:
s1: adding calcium carbonate with the weight ratio of 45% -70%, magnesium oxide with the weight ratio of 10% -20%, coupling agent with the weight ratio of 0.2% -1.5% and tap water with the weight ratio of 30% -40% into a batching tank, and uniformly stirring to prepare calcium carbonate-magnesium oxide slurry;
s2: conveying the calcium carbonate-magnesium oxide slurry prepared in the step S1 into a ball mill through a conveying pump for treatment, conveying the treated slurry into a centrifuge through the conveying pump for separation, and conveying the separated water into a mixing tank for recycling after the calcium carbonate-magnesium oxide slurry is separated;
s3: and (4) conveying the calcium carbonate-magnesium oxide slurry separated and treated in the step (S2) into a dryer for drying treatment to prepare the nano calcium carbonate-magnesium oxide composite material, and conveying water vapor generated in the drying process to a batching tank for recycling.
As a still further scheme of the invention: the preparation method of the calcium carbonate comprises the following steps:
s1: calcining a high-quality limestone raw material to prepare calcium oxide, and collecting carbon dioxide gas generated in the calcining process;
s2: adding water into the calcium oxide prepared in the step S1 for digestion to prepare calcium hydroxide emulsion;
s3: and (4) introducing the carbon dioxide gas collected in the step (S1) into the calcium hydroxide emulsion prepared in the step (S2), adding a crystal control agent, carbonizing to the end point to prepare calcium carbonate slurry of a required crystal form, and dehydrating, drying, screening and carrying out surface treatment to prepare the nano calcium carbonate.
As a still further scheme of the invention: the preparation method of the magnesium oxide comprises the following steps:
s1: adding water into bischofite for dissolving, and filtering impurities after dissolving;
s2: and (4) adding ammonia water into the solution filtered in the step (S1) at normal temperature and normal pressure, uniformly stirring, and settling, filtering, washing and calcining to obtain the magnesium oxide.
As a still further scheme of the invention: in the step S1, the weight ratio of calcium carbonate is 45-70%, the weight ratio of magnesium oxide is 10-20%, the weight ratio of coupling agent is 0.2-1.5%, and the weight ratio of tap water is 30-40%.
As a still further scheme of the invention: the calcination temperature in the step S1 is 900-1200 ℃, and the drying temperature in the step S3 is 110-130 ℃.
As a still further scheme of the invention: the calcination temperature in the step S2 is 900-1300 ℃.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, three wastes are not generated in the production process, the environmental pollution is less, the harm to human bodies is less, the production can be carried out according to the requirements of customers, and in addition, the magnesium oxide is added as an additive to play a flame retardant role.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the production process of the calcium carbonate-magnesium oxide composite nano material comprises the following steps:
s1: adding calcium carbonate with the weight ratio of 45%, magnesium oxide with the weight ratio of 10%, coupling agent with the weight ratio of 0.2% and tap water with the weight ratio of 30% into a batching tank, and uniformly stirring to prepare calcium carbonate-magnesium oxide slurry;
s2: conveying the calcium carbonate-magnesium oxide slurry prepared in the step S1 into a ball mill through a conveying pump for treatment, conveying the treated slurry into a centrifuge through the conveying pump for separation, and conveying the separated water into a mixing tank for recycling after the calcium carbonate-magnesium oxide slurry is separated;
s3: and (4) conveying the calcium carbonate-magnesium oxide slurry separated and treated in the step (S2) into a dryer for drying treatment to prepare the nano calcium carbonate-magnesium oxide composite material, and conveying water vapor generated in the drying process to a batching tank for recycling.
The preparation method of the calcium carbonate comprises the following steps:
s1: calcining a high-quality limestone raw material at 900 ℃ to prepare calcium oxide, and collecting carbon dioxide gas generated in the calcining process;
s2: adding water into the calcium oxide prepared in the step S1 for digestion to prepare calcium hydroxide emulsion;
s3: and (3) introducing the carbon dioxide gas collected in the step (S1) into the calcium hydroxide emulsion prepared in the step (S2), adding a crystal control agent, carbonizing to the end point to prepare calcium carbonate slurry of a required crystal form, and dehydrating, drying, screening and carrying out surface treatment to prepare the nano calcium carbonate, wherein the drying temperature is 110 ℃.
The preparation method of the magnesium oxide comprises the following steps:
s1: adding water into bischofite for dissolving, and filtering impurities after dissolving;
s2: adding ammonia water into the solution filtered in the step S1 under normal temperature and pressure, stirring uniformly, settling, filtering, washing and calcining to obtain the magnesium oxide, wherein the calcining temperature is 900 ℃.
Example two:
the production process of the calcium carbonate-magnesium oxide composite nano material comprises the following steps:
s1: adding 50% of calcium carbonate, 12% of magnesium oxide, 0.6% of coupling agent and 32% of tap water into a batching tank, and uniformly stirring to prepare calcium carbonate-magnesium oxide slurry;
s2: conveying the calcium carbonate-magnesium oxide slurry prepared in the step S1 into a ball mill through a conveying pump for treatment, conveying the treated slurry into a centrifuge through the conveying pump for separation, and conveying the separated water into a mixing tank for recycling after the calcium carbonate-magnesium oxide slurry is separated;
s3: and (4) conveying the calcium carbonate-magnesium oxide slurry separated and treated in the step (S2) into a dryer for drying treatment to prepare the nano calcium carbonate-magnesium oxide composite material, and conveying water vapor generated in the drying process to a batching tank for recycling.
The preparation method of the calcium carbonate comprises the following steps:
s1: calcining a high-quality limestone raw material at the calcining temperature of 1000 ℃ to prepare calcium oxide, and collecting carbon dioxide gas generated in the calcining process;
s2: adding water into the calcium oxide prepared in the step S1 for digestion to prepare calcium hydroxide emulsion;
s3: and (3) introducing the carbon dioxide gas collected in the step (S1) into the calcium hydroxide emulsion prepared in the step (S2), adding a crystal control agent, carbonizing to the end point to prepare calcium carbonate slurry of a required crystal form, and dehydrating, drying, screening and carrying out surface treatment to prepare the nano calcium carbonate, wherein the drying temperature is 120 ℃.
The preparation method of the magnesium oxide comprises the following steps:
s1: adding water into bischofite for dissolving, and filtering impurities after dissolving;
s2: adding ammonia water into the solution filtered in the step S1 under normal temperature and pressure, stirring uniformly, settling, filtering, washing and calcining to obtain the magnesium oxide, wherein the calcining temperature is 1000 ℃.
Example three:
the production process of the calcium carbonate-magnesium oxide composite nano material comprises the following steps:
s1: adding calcium carbonate with the weight ratio of 60%, magnesium oxide with the weight ratio of 15%, coupling agent with the weight ratio of 0.8% and tap water with the weight ratio of 35% into a batching tank, and uniformly stirring to prepare calcium carbonate-magnesium oxide slurry;
s2: conveying the calcium carbonate-magnesium oxide slurry prepared in the step S1 into a ball mill through a conveying pump for treatment, conveying the treated slurry into a centrifuge through the conveying pump for separation, and conveying the separated water into a mixing tank for recycling after the calcium carbonate-magnesium oxide slurry is separated;
s3: and (4) conveying the calcium carbonate-magnesium oxide slurry separated and treated in the step (S2) into a dryer for drying treatment to prepare the nano calcium carbonate-magnesium oxide composite material, and conveying water vapor generated in the drying process to a batching tank for recycling.
The preparation method of the calcium carbonate comprises the following steps:
s1: calcining a high-quality limestone raw material at 1100 ℃ to prepare calcium oxide, and collecting carbon dioxide gas generated in the calcining process;
s2: adding water into the calcium oxide prepared in the step S1 for digestion to prepare calcium hydroxide emulsion;
s3: and (3) introducing the carbon dioxide gas collected in the step (S1) into the calcium hydroxide emulsion prepared in the step (S2), adding a crystal control agent, carbonizing to the end point to prepare calcium carbonate slurry of a required crystal form, and dehydrating, drying, screening and carrying out surface treatment to prepare the nano calcium carbonate, wherein the drying temperature is 120 ℃.
The preparation method of the magnesium oxide comprises the following steps:
s1: adding water into bischofite for dissolving, and filtering impurities after dissolving;
s2: adding ammonia water into the solution filtered in the step S1 under normal temperature and pressure, stirring uniformly, settling, filtering, washing and calcining to obtain the magnesium oxide, wherein the calcining temperature is 1100 ℃.
Example four:
the production process of the calcium carbonate-magnesium oxide composite nano material comprises the following steps:
s1: adding 70% of calcium carbonate, 18% of magnesium oxide, 1.5% of coupling agent and 40% of tap water into a batching tank, and uniformly stirring to prepare calcium carbonate-magnesium oxide slurry;
s2: conveying the calcium carbonate-magnesium oxide slurry prepared in the step S1 into a ball mill through a conveying pump for treatment, conveying the treated slurry into a centrifuge through the conveying pump for separation, and conveying the separated water into a mixing tank for recycling after the calcium carbonate-magnesium oxide slurry is separated;
s3: and (4) conveying the calcium carbonate-magnesium oxide slurry separated and treated in the step (S2) into a dryer for drying treatment to prepare the nano calcium carbonate-magnesium oxide composite material, and conveying water vapor generated in the drying process to a batching tank for recycling.
The preparation method of the calcium carbonate comprises the following steps:
s1: calcining a high-quality limestone raw material at 1200 ℃ to prepare calcium oxide, and collecting carbon dioxide gas generated in the calcining process;
s2: adding water into the calcium oxide prepared in the step S1 for digestion to prepare calcium hydroxide emulsion;
s3: and (3) introducing the carbon dioxide gas collected in the step (S1) into the calcium hydroxide emulsion prepared in the step (S2), adding a crystal control agent, carbonizing to the end point to prepare calcium carbonate slurry of a required crystal form, and dehydrating, drying, screening and carrying out surface treatment to prepare the nano calcium carbonate, wherein the drying temperature is 130 ℃.
The preparation method of the magnesium oxide comprises the following steps:
s1: adding water into bischofite for dissolving, and filtering impurities after dissolving;
s2: adding ammonia water into the solution filtered in the step S1 under normal temperature and pressure, stirring uniformly, settling, filtering, washing and calcining to obtain the magnesium oxide, wherein the calcining temperature is 1300 ℃.
Example five:
the production process of the calcium carbonate-magnesium oxide composite nano material comprises the following steps:
s1: adding 65% of calcium carbonate, 20% of magnesium oxide, 0.9% of coupling agent and 38% of tap water into a batching tank, and uniformly stirring to prepare calcium carbonate-magnesium oxide slurry;
s2: conveying the calcium carbonate-magnesium oxide slurry prepared in the step S1 into a ball mill through a conveying pump for treatment, conveying the treated slurry into a centrifuge through the conveying pump for separation, and conveying the separated water into a mixing tank for recycling after the calcium carbonate-magnesium oxide slurry is separated;
s3: and (4) conveying the calcium carbonate-magnesium oxide slurry separated and treated in the step (S2) into a dryer for drying treatment to prepare the nano calcium carbonate-magnesium oxide composite material, and conveying water vapor generated in the drying process to a batching tank for recycling.
The preparation method of the calcium carbonate comprises the following steps:
s1: calcining a high-quality limestone raw material at 1150 ℃ to prepare calcium oxide, and collecting carbon dioxide gas generated in the calcining process;
s2: adding water into the calcium oxide prepared in the step S1 for digestion to prepare calcium hydroxide emulsion;
s3: and (3) introducing the carbon dioxide gas collected in the step (S1) into the calcium hydroxide emulsion prepared in the step (S2), adding a crystal control agent, carbonizing to the end point to prepare calcium carbonate slurry of a required crystal form, and dehydrating, drying, screening and carrying out surface treatment to prepare the nano calcium carbonate, wherein the drying temperature is 120 ℃.
The preparation method of the magnesium oxide comprises the following steps:
s1: adding water into bischofite for dissolving, and filtering impurities after dissolving;
s2: adding ammonia water into the solution filtered in the step S1 under normal temperature and pressure, stirring uniformly, settling, filtering, washing and calcining to obtain the magnesium oxide, wherein the calcining temperature is 1200 ℃.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (6)
1. The production process of the calcium carbonate-magnesium oxide composite nano material is characterized by comprising the following steps: the production process comprises the following steps:
s1: adding calcium carbonate, magnesium oxide, a coupling agent and tap water into a batching tank, and uniformly stirring to prepare calcium carbonate-magnesium oxide slurry;
s2: conveying the calcium carbonate-magnesium oxide slurry prepared in the step S1 into a ball mill through a conveying pump for treatment, conveying the treated slurry into a centrifuge through the conveying pump for separation, and conveying the separated water into a mixing tank for recycling after the calcium carbonate-magnesium oxide slurry is separated;
s3: and (4) conveying the calcium carbonate-magnesium oxide slurry separated and treated in the step (S2) into a dryer for drying treatment to prepare the nano calcium carbonate-magnesium oxide composite material, and conveying water vapor generated in the drying process to a batching tank for recycling.
2. The process for producing calcium carbonate-magnesium oxide composite nanomaterial according to claim 1, characterized in that: the preparation method of the calcium carbonate comprises the following steps:
s1: calcining a high-quality limestone raw material to prepare calcium oxide, and collecting carbon dioxide gas generated in the calcining process;
s2: adding water into the calcium oxide prepared in the step S1 for digestion to prepare calcium hydroxide emulsion;
s3: and (4) introducing the carbon dioxide gas collected in the step (S1) into the calcium hydroxide emulsion prepared in the step (S2), adding a crystal control agent, carbonizing to the end point to prepare calcium carbonate slurry of a required crystal form, and dehydrating, drying, screening and carrying out surface treatment to prepare the nano calcium carbonate.
3. The process for producing calcium carbonate-magnesium oxide composite nanomaterial according to claim 1, characterized in that: the preparation method of the magnesium oxide comprises the following steps:
s1: adding water into bischofite for dissolving, and filtering impurities after dissolving;
s2: and (4) adding ammonia water into the solution filtered in the step (S1) at normal temperature and normal pressure, uniformly stirring, and settling, filtering, washing and calcining to obtain the magnesium oxide.
4. The process for producing calcium carbonate-magnesium oxide composite nanomaterial according to claim 1, characterized in that: in the step S1, the weight ratio of calcium carbonate is 45-70%, the weight ratio of magnesium oxide is 10-20%, the weight ratio of coupling agent is 0.2-1.5%, and the weight ratio of tap water is 30-40%.
5. The process for producing calcium carbonate-magnesium oxide composite nanomaterial according to claim 2, characterized in that: the calcination temperature in the step S1 is 900-1200 ℃, and the drying temperature in the step S3 is 110-130 ℃.
6. The process for producing calcium carbonate-magnesium oxide composite nanomaterial according to claim 3, characterized in that: the calcination temperature in the step S2 is 900-1300 ℃.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111514372A (en) * | 2020-04-17 | 2020-08-11 | 上海交通大学医学院附属第九人民医院 | CaCO3MgO nano composite and application thereof in bone repair |
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| CN111514372A (en) * | 2020-04-17 | 2020-08-11 | 上海交通大学医学院附属第九人民医院 | CaCO3MgO nano composite and application thereof in bone repair |
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