CN102219357A - Production process and equipment for hollow glass microbeads - Google Patents
Production process and equipment for hollow glass microbeads Download PDFInfo
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- CN102219357A CN102219357A CN 201110125767 CN201110125767A CN102219357A CN 102219357 A CN102219357 A CN 102219357A CN 201110125767 CN201110125767 CN 201110125767 CN 201110125767 A CN201110125767 A CN 201110125767A CN 102219357 A CN102219357 A CN 102219357A
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Abstract
The invention relates to a production process and equipment for hollow glass microbeads. The production process comprises the following steps of: crushing and grinding perlite, pitchstone, obsidian, volcanic ash, diatomite and other natural glassy minerals used as raw materials, sorting the mineral powder with particle size of 5-200 mu m, drying at the temperature of 300-750 DEG C and controlling the bound water content at 0.1-2wt%; and conveying the mineral powder into a hollow glass microbead expansion furnace in a pneumatic conveying mode, controlling the high-temperature expansion temperature at 1000-1400 DEG C and heat-insulation quenching temperature at 800-1150 DEG C, then cooling and collecting to obtain high-performance hollow glass microbeads. The production process and equipment have the advantage of low cost and the prepared product has high performance. The high-performance hollow glass microbeads with different densities are produced by controlling the particle size, water content, expansion temperature, heat-insulation quenching temperature and time of the powder so as to meet the requirements of different industries on the performance of the hollow glass microbeads.
Description
Technical field
The present invention relates to produce a kind of production technique and equipment thereof of light inorganic material, more particularly, the present invention relates to a kind of production technique and equipment thereof of hollow glass micropearl, belong to the new inorganic material field.
Background technology
Hollow glass micropearl is a kind of spherical glass matter powder with hollow structure, the singularity of structure has determined it to have characteristics such as density is low, thermal conductivity is low, chemical stability is good, good fluidity, be added in the various materials as weighting agent, can play and reduce density, heat insulation, sound damping effect, extensively be applied to industrial circles such as aviation, automobile, building materials, chemical industry, agricultural, oil.
According to the difference of raw material, the production technique of hollow glass micropearl mainly contains two kinds at present:
It is the preparation technology of main raw material with the water glass that patent CN 1990401A has introduced a kind of, and the sodium silicate solution that will contain boron earlier carries out spraying drying, and obtaining diameter is the solid gel ball of 5-50 μ m, then expansion molding in 400-600 ℃ High Temperature Furnaces Heating Apparatus.Because this preparation technology is a raw material with the water glass, alkali metal content height in the hollow glass micropearl, the siloxane bond fracture ratio in the glass is big.Low, the poor chemical stability of hollow glass micropearl ultimate compression strength of this kind prepared is used to be restricted in demanding industry.
Patent CN 101638293A discloses a kind of preparation method of hollow glass micropearl, and it obtains hollow glass micropearl through shrend, diversity, hollow nodularization, collection then earlier with a certain proportion of frit fusion homogenizing.Because this kind arts demand prepares glass in advance, need twice pyroprocessing, energy consumption is higher, and contains a certain proportion of boron in the glass, makes its preparation cost higher.Simultaneously to the control difficulty of technology, particularly to SO
3The control of content, expansion temperature, time and atmosphere.
Can't prepare high-performance, hollow glass micropearl cheaply by above-mentioned two kinds of production technique at present.
Summary of the invention
Purpose of the present invention utilizes glassiness mineral to be raw material exactly, solve low, the poor chemical stability of product ultimate compression strength in the background information, complex manufacturing, unmanageable problem, a kind of new production technique is provided, produce have high-performance, hollow glass micropearl cheaply.
For achieving the above object, the production technology that the present invention adopts is as follows:
A kind of production technique of hollow glass micropearl, production craft step comprise with glassiness crushing raw ore, grinding, sorting, drying, high temperature expand, insulation is modified, cooling and collecting.
Concrete steps comprise:
A, glassiness raw ore is carried out fragmentation, grinding, sub-elect the material powder that particle diameter is 5-200 μ m;
B, the material powder that steps A is obtained carry out drying under 300-750 ℃, being dried to combination water content is 0.1-2wt%;
C, raw material enter in the hollow glass micropearl expansion furnace by air conveying, from top to bottom the breathing space by the hollow glass micropearl expansion furnace, be incubated modified district, powder expands at 1000-1400 ℃ of following high temperature successively, insulation is modified down at 800-1150 ℃, obtain having the hollow glass micropearl of single hollow structure, descending with high temperature gas flow, then with controlled cooling air mixing cooling forming;
The hollow glass micropearl that D, step C obtain obtains high performance hollow glass micropearl through the collection assembly collection.
Above-mentioned glassiness raw ore is perlite, pitchstone, black credit rock, volcanic ash or diatomite.
Above-mentioned high temperature expands and adopts the combustion gas heating; Be incubated modified employing electrically heated.
The temperature of above-mentioned controlled cooling air is a room temperature, controls different air quantity by the blower fan different capacity, controls the high temperature expansion thus and is incubated the modified time, produces the hollow glass micropearl of different densities; Powder is vertically descending under the negative-pressure air-flow effect in stove, has avoided powder to glue wall.
A kind of production unit of hollow glass micropearl is characterized in that: comprise the shredder assemblies, grading machine, dryer, air conveying assembly, expansion furnace and the collection assembly that connect successively.
Above-mentioned shredder assemblies is that crusher is connected successively with pulverizer.
Above-mentioned air conveying assembly is blower fan, feed bin, powder feeder and combustion air pipeline; Feed bin is positioned at the powder feeder top, and powder feeder one side connects blower fan, and opposite side is connected with expansion furnace by the combustion air pipeline.
Above-mentioned expansion furnace is a vertical heater, and inside is followed successively by burner, high temperature breathing space from top to bottom and is incubated modified district.
Powder enters the combustion air pipeline through powder feeder; Combustion air enters the combustion air pipeline through blower fan, and powder is sent into burner in the expansion furnace.Powder enters the high temperature breathing space from the burner of upper of furnace body, expanded by heating forms single hollow structure, and along with being advanced into the modified district of electrical heat tracing under the high temperature gas flow, by control expansion temperature, insulation refining temperature and time, adjust the structure of hollow glass micropearl, obtain the high-performance hollow glass micropearl of various density.
Above-mentioned collection assembly comprises the blower fan that is used to collect of the settling pocket, cyclone, bagroom and the afterbody that connect successively; Cooled hollow glass micropearl is all collected through settling pocket, cyclone, bagroom under the graviational interaction of afterbody blower fan successively.
Useful technique effect of the present invention is:
1, to adopt glassiness mineral be raw material in the present invention, simplified the technological process of production, solved the problem of prior art processes control difficulty, produce have the intensity height, chemical stability is good, cost is low hollow glass micropearl.
2, easily by control, obtain the high-performance hollow glass micropearl of different densities, can satisfy the performance requriements of different industries hollow glass micropearl to diameter of particle, water content, expansion temperature, holding temperature.
Description of drawings
Fig. 1 is a hollow glass micropearl technological process of production skeleton diagram.
Fig. 2 is a hollow glass micropearl production unit synoptic diagram.
Reference numeral
1 be crusher, 2 for pulverizer, 3 for grading machine, 4 for dryer, 5 for blower fan, 6 for feed bin, 7 for powder feeder, 8 for the combustion air pipeline, 9 for burner, 10 for expansion furnace, 11 for the high temperature breathing space, 12 for the modified district of insulation, 13 for settling pocket, 14 for cyclone, 15 for bagroom, 16 for blower fan.
Embodiment
Glassiness mineral enter pulverizer 2 after the fragmentation in crusher 1, the powder behind the grinding sub-elects the powder of particle diameter at 5 μ m by grading machine 3, enters dryer 4 then, and drying temperature is 300 ℃, removes the free water in the powder, and combination water content is 2wt%.
Powder enters in the hollow glass micropearl expansion furnace 10 by air conveying, and by high temperature breathing space 11, the modified district 12 of insulation of hollow glass micropearl expansion furnace 10, expansion temperature is 1000 ℃ from top to bottom, and the insulation refining temperature is 800 ℃.Hollow glass micropearl is descending with high temperature gas flow, and with controlled cooling air mixing cooling forming, after collection assembly obtains high performance hollow glass micropearl, the particle diameter that obtains hollow glass micropearl is 8 μ m, and density is 0.1g/cm
3
Described air conveying blower fan 5, feed bin 6, powder feeder 7, the combustion air pipeline 8 of comprising; Feed bin 6 is installed in above the powder feeder 7, and powder enters combustion air pipeline 8 through powder feeder 7.Combustion air enters combustion air pipeline 8 through blower fan 5, and powder is sent into burner 9.
Described hollow glass micropearl expansion furnace 10 is a vertical heater, and combustion gas, two kinds of type of heating of electricity are arranged, and forms the modified district 12 of high temperature breathing space 11 and electrical heat tracing respectively.Powder enters high temperature breathing space 11 from the burner 9 of upper of furnace body, and expanded by heating forms single hollow structure, and along with being advanced into the modified district 12 of electrical heat tracing under the high temperature gas flow.
Described collection assembly comprises by settling pocket 13, cyclone 14, bagroom 15 and supporting blower fan 16.Cooled powder is all collected through settling pocket 13, cyclone 14, bagroom 15 under the graviational interaction of afterbody blower fan 16 successively.
Glassiness mineral enter pulverizer 2 after the fragmentation in crusher 1, the powder behind the grinding sub-elects the powder of particle diameter at 200 μ m by grading machine 3, enters dryer 4 then, and drying temperature is 750 ℃, removes the free water in the powder, and combination water content is 0.1wt%.
Powder enters in the hollow glass micropearl expansion furnace 10 by air conveying, and by high temperature breathing space 11, the modified district 12 of insulation of hollow glass micropearl expansion furnace 10, expansion temperature is 1400 ℃ from top to bottom, and the insulation refining temperature is 1150 ℃.Hollow glass micropearl is descending with high temperature gas flow, and with controlled cooling air mixing cooling forming, after collection assembly obtains high performance hollow glass micropearl, the particle diameter that obtains hollow glass micropearl is 220 μ m, and density is 0.8g/cm
3
Described air conveying blower fan 5, feed bin 6, powder feeder 7, the combustion air pipeline 8 of comprising; Feed bin 6 is installed in above the powder feeder 7, and powder enters combustion air pipeline 8 through powder feeder 7.Combustion air enters combustion air pipeline 8 through blower fan 5, and powder is sent into burner 9.
Described hollow glass micropearl expansion furnace 10 is a vertical heater, and combustion gas, two kinds of type of heating of electricity are arranged, and forms the modified district 12 of high temperature breathing space 11 and electrical heat tracing respectively.Powder enters high temperature breathing space 11 from the burner 9 of upper of furnace body, and expanded by heating forms single hollow structure, and along with being advanced into the modified district 12 of electrical heat tracing under the high temperature gas flow.
Described collection assembly comprises by settling pocket 13, cyclone 14, bagroom 15 and supporting blower fan 16.Cooled powder is all collected through settling pocket 13, cyclone 14, bagroom 15 under the graviational interaction of afterbody blower fan 16 successively.
Glassiness mineral enter pulverizer 2 after the fragmentation in crusher 1, the powder behind the grinding sub-elects the powder of particle diameter at 40 μ m by grading machine 3, enters dryer 4 then, and drying temperature is 400 ℃, removes the free water in the powder, and combination water content is 0.6wt%.
Powder enters in the hollow glass micropearl expansion furnace 10 by air conveying, and by high temperature breathing space 11, the modified district 12 of insulation of hollow glass micropearl expansion furnace 10, expansion temperature is 1250 ℃ from top to bottom, and the insulation refining temperature is 900 ℃.Hollow glass micropearl is descending with high temperature gas flow, and with controlled cooling air mixing cooling forming, after collection assembly obtains high performance hollow glass micropearl, the particle diameter that obtains hollow glass micropearl is 100 μ m, and density is 0.35g/cm
3
Described air conveying blower fan 5, feed bin 6, powder feeder 7, the combustion air pipeline 8 of comprising; Feed bin 6 is installed in above the powder feeder 7, and powder enters combustion air pipeline 8 through powder feeder 7.Combustion air enters combustion air pipeline 8 through blower fan 5, and powder is sent into burner 9.
Described hollow glass micropearl expansion furnace 10 is a vertical heater, and combustion gas, two kinds of type of heating of electricity are arranged, and forms the modified district 12 of high temperature breathing space 11 and electrical heat tracing respectively.Powder enters high temperature breathing space 11 from the burner 9 of upper of furnace body, and expanded by heating forms single hollow structure, and along with being advanced into the modified district 12 of electrical heat tracing under the high temperature gas flow.
Described collection assembly comprises by settling pocket 13, cyclone 14, bagroom 15 and supporting blower fan 16.Cooled powder is all collected through settling pocket 13, cyclone 14, bagroom 15 under the graviational interaction of afterbody blower fan 16 successively.
Glassiness mineral enter pulverizer 2 after the fragmentation in crusher 1, the powder behind the grinding sub-elects the powder of particle diameter at 110 μ m by grading machine 3, enters dryer 4 then, and drying temperature is 650 ℃, removes the free water in the powder, and combination water content is 0.2wt%.
Powder enters in the hollow glass micropearl expansion furnace 10 by air conveying, and by high temperature breathing space 11, the modified district 12 of insulation of hollow glass micropearl expansion furnace 10, expansion temperature is 1300 ℃ from top to bottom, and the insulation refining temperature is 1000 ℃.Hollow glass micropearl is descending with high temperature gas flow, and with controlled cooling air mixing cooling forming, after collection assembly obtains high performance hollow glass micropearl, the particle diameter that obtains hollow glass micropearl is 150 μ m, and density is 0.6g/cm
3
Described air conveying blower fan 5, feed bin 6, powder feeder 7, the combustion air pipeline 8 of comprising; Feed bin 6 is installed in above the powder feeder 7, and powder enters combustion air pipeline 8 through powder feeder 7.Combustion air enters combustion air pipeline 8 through blower fan 5, and powder is sent into burner 9.
Described hollow glass micropearl expansion furnace 10 is a vertical heater, and combustion gas, two kinds of type of heating of electricity are arranged, and forms the modified district 12 of high temperature breathing space 11 and electrical heat tracing respectively.Powder enters high temperature breathing space 11 from the burner 9 of upper of furnace body, and expanded by heating forms single hollow structure, and along with being advanced into the modified district 12 of electrical heat tracing under the high temperature gas flow.
Described collection assembly comprises by settling pocket 13, cyclone 14, bagroom 15 and supporting blower fan 16.Cooled powder is all collected through settling pocket 13, cyclone 14, bagroom 15 under the graviational interaction of afterbody blower fan 16 successively.
Claims (10)
1. the production technique of a hollow glass micropearl is characterized in that: production craft step comprise with glassiness crushing raw ore, grinding, sorting, drying, high temperature expand, insulation is modified, cooling and collecting.
2. the production technique of a kind of hollow glass micropearl according to claim 1, it is characterized in that: concrete steps comprise:
A, glassiness raw ore is carried out fragmentation, grinding, sub-elect the material powder that particle diameter is 5-200 μ m;
B, the material powder that steps A is obtained carry out drying under 300-750 ℃, being dried to combination water content is 0.1-2wt%;
C, step B dried raw material powder is carried out high temperature expand, and then be incubated modifiedly, carry out cooling forming after finishing again and obtain hollow glass micropearl;
The hollow glass micropearl that D, collection step C obtain.
3. the production technique of a kind of hollow glass micropearl according to claim 1 and 2 is characterized in that: described glassiness raw ore is perlite, pitchstone, black credit rock, volcanic ash or diatomite.
4. the production technique of hollow glass micropearl according to claim 1 and 2 is characterized in that: described high temperature expands and is incubated modified being specially:
Material powder expands at 1000-1400 ℃ of following high temperature successively, and insulation is modified down at 800-1150 ℃, and the hollow glass micropearl that obtains having single hollow structure is the cooling air mixing cooling forming of room temperature then with temperature.
5. the production technique of hollow glass micropearl according to claim 4 is characterized in that: described high temperature expansion employing combustion gas heating; Be incubated modified employing electrically heated.
6. the production unit of a kind of hollow glass micropearl according to claim 1 is characterized in that: the production unit of described hollow glass micropearl comprises shredder assemblies, grading machine (3), dryer (4), air conveying assembly, expansion furnace (10) and the collection assembly that connects successively.
7. the production unit of a kind of hollow glass micropearl according to claim 6, it is characterized in that: described shredder assemblies is that crusher (1) is connected successively with pulverizer (2).
8. the production unit of a kind of hollow glass micropearl according to claim 6, it is characterized in that: described air conveying assembly is blower fan (5), feed bin (6), powder feeder (7) and combustion air pipeline (8); Feed bin (6) is positioned at powder feeder (7) top, and powder feeder (7) one sides connect blower fan (5), and opposite side is connected with expansion furnace (10) by combustion air pipeline (8).
9. the production unit of a kind of hollow glass micropearl according to claim 6, it is characterized in that: described expansion furnace (10) is a vertical heater, inside is followed successively by burner (9), high temperature breathing space (11) and insulation modified district (12) from top to bottom.
10. the production unit of a kind of hollow glass micropearl according to claim 6 is characterized in that: described collection assembly comprises settling pocket (13), cyclone (14), bagroom (15) that connects successively and the blower fan (16) that is used to collect.
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| CN 201110125767 CN102219357A (en) | 2011-05-16 | 2011-05-16 | Production process and equipment for hollow glass microbeads |
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| CN 201110125767 CN102219357A (en) | 2011-05-16 | 2011-05-16 | Production process and equipment for hollow glass microbeads |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674662A (en) * | 2012-05-28 | 2012-09-19 | 中国海洋大学 | Process for preparing hollow glass-ceramics microballoon sphere |
| CN103090659A (en) * | 2011-10-31 | 2013-05-08 | 刘应新 | Closed cell perlite puffing equipment |
| CN103467058A (en) * | 2013-09-02 | 2013-12-25 | 山东理工大学 | Method for preparing waterproof, antifouling, environment-friendly and flame retardant insulation board by using pitchstone beads |
| CN103496843A (en) * | 2013-09-24 | 2014-01-08 | 信阳市上天梯怡和矿产资源开发有限公司 | Device for preparing hollow microbeads by using perlite tailings as well as application thereof |
| CN104310761A (en) * | 2014-10-30 | 2015-01-28 | 中国建材国际工程集团有限公司 | Method for foaming and nodulizing hollow glass microspheres under high negative pressure by utilizing flame |
| CN106365444A (en) * | 2016-08-31 | 2017-02-01 | 王素环 | Glass bead production process and equipment |
| CN112791829A (en) * | 2021-01-27 | 2021-05-14 | 徐公礼 | Production equipment and method for preparing hollow microspheres by using perlite |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090659A (en) * | 2011-10-31 | 2013-05-08 | 刘应新 | Closed cell perlite puffing equipment |
| CN102674662A (en) * | 2012-05-28 | 2012-09-19 | 中国海洋大学 | Process for preparing hollow glass-ceramics microballoon sphere |
| CN103467058A (en) * | 2013-09-02 | 2013-12-25 | 山东理工大学 | Method for preparing waterproof, antifouling, environment-friendly and flame retardant insulation board by using pitchstone beads |
| CN103496843A (en) * | 2013-09-24 | 2014-01-08 | 信阳市上天梯怡和矿产资源开发有限公司 | Device for preparing hollow microbeads by using perlite tailings as well as application thereof |
| CN103496843B (en) * | 2013-09-24 | 2016-05-18 | 信阳市上天梯怡和矿产资源开发有限公司 | A kind of device and application thereof that utilizes perlite tailing to produce hollow beads |
| CN104310761A (en) * | 2014-10-30 | 2015-01-28 | 中国建材国际工程集团有限公司 | Method for foaming and nodulizing hollow glass microspheres under high negative pressure by utilizing flame |
| CN106365444A (en) * | 2016-08-31 | 2017-02-01 | 王素环 | Glass bead production process and equipment |
| CN112791829A (en) * | 2021-01-27 | 2021-05-14 | 徐公礼 | Production equipment and method for preparing hollow microspheres by using perlite |
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Application publication date: 20111019 |