CN100434384C - Manufacturing process for low-temperature hydrophobic expanded pearlite - Google Patents
Manufacturing process for low-temperature hydrophobic expanded pearlite Download PDFInfo
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- CN100434384C CN100434384C CNB2004100249025A CN200410024902A CN100434384C CN 100434384 C CN100434384 C CN 100434384C CN B2004100249025 A CNB2004100249025 A CN B2004100249025A CN 200410024902 A CN200410024902 A CN 200410024902A CN 100434384 C CN100434384 C CN 100434384C
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- hydrophober
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Abstract
The present invention relates to a process for manufacturing low-temperature expanded perlite, which has the specific procedures, such as ore preheating, high temperature roasting, hydrophobic treatment, baking, dehydration, etc. Hydrophobic agents of the present invention mainly adopt alkaline silicon sodium alcoholate or emulsified silicon oil. While in use, the hydrophobic agents are diluted by water, and then are uniformly sprayed on the surfaces of the expanded perlite of finished products. By using the technology of the present invention, the yield of the hydrophobic expanded perlite is high, the hydrophobic performance of the products is good, and the adaptability of a productive line is strong. The ore is once and continuously completed by being processed with preheating for dehydration, roasting for expansion, hydrophobic agent spraying and baking for dehydration. The technical line is easy to control in a centralized control mode through a computer to ensure the stable quality of the products.
Description
Technical field
The invention belongs to the cryogenic material technical field, be specifically related to a kind of low temperature hydrophobic expansion pearlite production technique.
Background technology
Volcanic glass matter roasting rock claims perlite through cooling agglomerative product; Perlite doubly claims pearlstone through fragmentation, classification, preheating high-temperature roasting moment volumetric expansion 10-25.Granule interior is vesicular, have multi-functional characteristics such as density is little, thermal conductivity is low, fire prevention, sound-absorbing, except that the fields such as construction industry, metallurgy, electric power, chemical industry, empty branch, natural gas liquids that are widely used in as the thermal insulation material, also can be applicable to agricultural, gardens as soilless culture base material, soil improvement agent, farm chemical carrier, animal feedstuff additive, foodstuffs industry flocculating aids or the like.But because the trickle vesicular structure of pearlstone, specific surface area reaches 10m
2/ g, the quality water-intake rate can reach self 4～9 times according to the different density of pearlstone, and the thermal conductivity ratio air of water is big 24 times, has a strong impact on the effect of heat insulating.For this reason, studied number of ways both at home and abroad to improve the hydrophobicity performance of pearlstone.As United States Patent (USP) 4,889,747, once adopted silicone emulsion, low-grade polymer supercarbonate, poly-oxyethylene alkane sodium bicarbonate, polydimethylsiloxane or the like to join in the pearlstone and stirred with different ratios, drying and dehydrating obtains hydrophobic expansion pearlite again; United States Patent (USP) 4,525,388 its production technique: the preheating that utilizes perlite in the high-temperature roasting expansion process, to take out of, the water-soluble liquid emulsion of spraying dimethyl siloxane, perlite expansion, spraying hydrophober, drying and dehydrating are once finished, fuel adopts Sweet natural gas, per hour uses perlite ore 454Kg, produces pearlstone 4.5m
3About.Finished product adopts a line coating of line transport pipe liquid emulsion, and product cut size is 150 microns; Korea S sprays emulsifying agent simultaneously by the separator multiple spot on perlite roasting conveying products production line, to increase the purpose that the emulsion quantity for spray reaches the uniform spraying hydrophober in expanded perlite granule surface; Hungary is in the pearlstone production process, the characteristics that flow velocity is fast, the finished product flow is big, for uniform spraying hydrophober, while is for fear of the hydrophobic effect of temperatures involved product, three drying plants are set on production line, make product calcining expansion, spraying, drying and dehydrating once finish the acquisition hydrophobic expansion pearlite.Beijing building materials research institute also once adopted special gas material separating device spraying hydrophober of design on the pearlstone production technique.More than these production technique characteristics are respectively arranged, but its deficiency is arranged also, its equipment more complicated, output is also lower.
Summary of the invention
The object of the invention is to propose that a kind of equipment is simple, turnout is high, control low temperature hydrophobic expansion pearlite production technique easily.
The low temperature hydrophobic expansion pearlite production technique that the present invention proposes, concrete steps are as follows:
(1) ore in sand form preheating.Perlite ore is placed on preheating in the preheating oven, preheating temperature is 400-600 ℃, remove the moisture content that adheres in the ore in sand form and unnecessary crystal water, make the ore in sand form crystal water meet the required crystal water of shaft kiln high-temperature moment calcining expansion, control generally that the crystal water weight content is 2-4% in the ore in sand form after the preheating.The perlite ore particle diameter generally can be 0.15mm-5.0mm;
(2) high-temperature roasting.To deliver to the perlite kiln by negative pressure fate or lift through the ore in sand form of preheating dehydration, carry out high-temperature roasting, expansion.Maturing temperature is 800-900 ℃, and roasting time is 1-3 second, makes perlitic density from 1200kg/m
2About drop to 40-110kg/m
2, obtain pearlstone;
(3) hydrophobic is handled.In the finished product line of pipes of the outlet of perlite kiln, pearlstone is carried out hydrophobic handle, specifically be evenly to be sprayed at pearlstone on by pressure nozzle the hydrophober aqueous solution;
(4) drying and dewatering.
In this production technique, hydrophober can adopt alkaline water dissolubility sodium silanolate or silicone emulsion.The weight ratio of general hydrophober and water is 1: 5-1.15.
For alkaline sodium silanolate, directly spray behind the dilute with water.For silicone emulsion, wherein the incorporation of emulsifying agent is the 1-5% of silicone oil weight, and breast uses nonionic surface active agent such as gelatin or tween-80 usually with agent.
In this production technique, the weight ratio of the hydrophober aqueous solution and pearlstone is 0.1: 1-1: 1, and at this moment, hydrophober can evenly be coated with, and the hydrophobic effect also can reach required technical indicator.
Because pearlstone is the dimension fine particle, its specific surface area 10m
2About/g.When pearlstone density less than 60Kg/m
3The time, its saturated water absorption can reach 9 times of own wt.If directly hydrophober and pearlstone are mixed and stirred drying and dewatering, the consumption of hydrophober is brought up to 30% of pearlstone quality and is not also reached the hydrophobic requirement, production cost improves greatly, evidence, when the ratio of hydrophober and water is 1: 5 ~ 15, the consumption of hydrophober can drop to below 5% of pearlstone quality.
In this production technique, the hydrophober aqueous solution after dilution can be pressurizeed by pump, sends into the nozzle of spraying plant by pipeline, makes solution form vaporific being directly injected in the pearlstone finished product transport pipe, contacts with product, reaches the purpose of uniform spraying.Solution flow is controlled by under meter, and the size of solution atomization particle is by the pressure-controlling of spraying plant.The solution flow size is regulated according to finished product flow size in the transport pipe.
In this production technique, drying and dewatering is finished in the finished product transport pipe, and bake out temperature is 230-280 ℃, and the time is 2-5 second.
In this production technique, the perlite kiln adopts the hyperbolic line shaft kiln, is provided with three finished product line of pipes in the shaft kiln exit, and corresponding therewith, the hydrophober spraying coating process also is arranged on three lines.These 3 line of pipes are located at No. 1 finished product sedimentation storehouse, No. 2 finished product sedimentation storehouses and cyclonic separator place respectively.
Corresponding to production technique of the present invention, its apparatus for production line mainly comprises preheating oven, lift, induced draft fan, shaft kiln, first, second product sedimentation storehouse, cyclonic separator, fly-ash separator and hydrophober solution spraying device, and its production line as shown in Figure 1.
The advantage of production technique of the present invention is:
1, hydrophobic expansion pearlite output height per hour is 20m
3, and the hourly output of United States Patent (USP) 4525388 is 5.5m
3And the product hydrophobicity performance is good, and the hydrophobic rate reaches more than 90%.
2, kiln adaptability is strong, and in same kiln, can change the operating mine sand grains arbitrarily directly is the product of all size of 0.15mm～5.0mm.And more existing technology, a kiln only can be produced the product of certain specification.
3, perlite ore from preheating dehydration, calcining expansion, hydrophober spraying, drying and dewatering is disposable carries out continuously.
4, processing parameter of the present invention comprises that preheating oven temperature, shaft kiln temperature, air flow quantity, finished product transfer lime flow etc. all can adopt the computer centralized Control to regulate, thereby can guarantee constant product quality.
Description of drawings
Fig. 1 is the production line synoptic diagram of technology of the present invention.
Number in the figure: 1 is ore in sand form, and 2 is preheating oven, and 3 is lift, and 4 is shaft kiln, and 5 is the first sedimentation storehouse, and 6 is the second sedimentation storehouse, and 7 is cyclonic separator, and 8 is fly-ash separator, and 9 is Waste gas outlet, and 10 is induced draft fan.
Embodiment
The invention is further illustrated by the following examples.
Water: 1.3～1.6 kilograms,
Tween-80: 12～15 grams,
Methyl Hydrogen Polysiloxane Fluid: 0.6～0.8 kilogram.
With the part by weight dilution of above-mentioned hydrophober emulsion and water, obtain the hydrophober aqueous solution by 1: 10.Every cubic metre of pearlstone spraying hydrophober 2.5kg.The hydrophober flow is by under meter and atomizing nozzle control.Drying and dewatering in the finished product pipeline, dehydration temperaturre are about 250 ℃, and dewatering time is 2～3 seconds.The hydrophobic rate of resulting pearlstone is more than 92%.
Claims (5)
1, a kind of production technique of hydrophobic expansion pearlite is characterized in that concrete steps are as follows:
(1) ore in sand form preheating is placed on preheating in the preheating oven with perlite ore, and preheating temperature is 400-600 ℃, removes the moisture content that adheres in the ore in sand form and unnecessary crystal water, makes that the crystal water weight content is 2-4% in the ore in sand form;
(2) high-temperature roasting will be delivered to the perlite kiln by negative pressure fate or lift through the ore in sand form of preheating dehydration, carry out high-temperature roasting, expansion, and maturing temperature is 800-900 ℃, and roasting time is 1-3 second, makes perlitic density from 1200kg/m
2About drop to 40-110kg/m
2, obtain pearlstone;
(3) hydrophobic is handled, and in the finished product line of pipes of the outlet of perlite kiln, evenly is sprayed at pearlstone on by pressure nozzle the hydrophober aqueous solution;
(4) drying and dewatering;
Wherein: described perlite ore raw material particle size is 0.15-5.0mm; Used hydrophober is alkaline water dissolubility sodium silanolate or silicone emulsion, and in the hydrophober aqueous solution, hydrophober and water weight ratio are 1: 5-1: 15; The weight ratio of the hydrophober aqueous solution and pearlstone is 0.1: 1-1: 1.
2, production technique according to claim 1 is characterized in that the emulsifying agent consumption is the 1-5% of silicone oil weight in the described silicone emulsion.
3, production technique according to claim 2 is characterized in that described emulsifying agent adopts gelatin or tween-80.
4, production technique according to claim 1, it is characterized in that the hydrophober aqueous solution is pressurizeed by pump, send into the nozzle of spraying plant, make solution form vaporific being directly injected in the pearlstone finished product transport pipe by pipeline, contact with product, solution flow is controlled by under meter.
5, production technique according to claim 1 is characterized in that drying and dewatering finishes in the finished product transport pipe, the drying and dewatering temperature is 230-280 ℃, and the time is 2-5 second.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100249025A CN100434384C (en) | 2004-06-03 | 2004-06-03 | Manufacturing process for low-temperature hydrophobic expanded pearlite |
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|---|---|---|---|
| CNB2004100249025A CN100434384C (en) | 2004-06-03 | 2004-06-03 | Manufacturing process for low-temperature hydrophobic expanded pearlite |
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| CN1583642A CN1583642A (en) | 2005-02-23 |
| CN100434384C true CN100434384C (en) | 2008-11-19 |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101629064B (en) * | 2009-08-04 | 2012-08-08 | 信阳市上天梯恒源矿业有限公司 | Manufacturing technique of low temperature cold insulation heat insulation material |
| CN102226498B (en) * | 2011-05-31 | 2012-07-25 | 上海交通大学 | Expanded perlite hydrophobic system for liquefied natural gas (LNG) carrier |
| CN103304174A (en) * | 2013-06-25 | 2013-09-18 | 大连铭源全建材有限公司 | Production method of expanded perlite |
| CN103503751A (en) * | 2013-09-27 | 2014-01-15 | 合肥市天丰菌业科技有限公司 | Small-leaf gardenia soilless culture base and method for preparing same |
| CN104926168B (en) * | 2014-03-18 | 2017-08-08 | 连云港松彬建筑材料有限公司 | A kind of hydrophobic expansion pearlite and preparation method thereof |
| CN104193210A (en) * | 2014-08-22 | 2014-12-10 | 西南大学 | Hydrophobic expanded perlite and preparation method thereof |
| CN104891837B (en) * | 2015-05-22 | 2017-03-01 | 刘方成 | A kind of preparation method of composite foamed construction wall insulation material |
| CN107262066B (en) * | 2017-07-27 | 2020-10-23 | 广州市番禺盛达穗南有限公司 | Preparation method of perlite adsorbent for removing heavy metal ions |
| CN107282012B (en) * | 2017-07-27 | 2020-10-23 | 广州市番禺盛达穗南有限公司 | Production method of perlite compressed nutrient soil capable of treating heavy metals in waste liquid |
| CN107262022B (en) * | 2017-07-27 | 2020-10-23 | 广州市番禺盛达穗南有限公司 | Processing method of perlite oil absorbent for absorbing oil stains on water surface |
| CN108905953B (en) * | 2018-08-01 | 2021-08-31 | 中科亿诚(珠海)环保技术有限公司 | Preparation method of perlite adsorbent for treating petroleum pollution of water body |
| CN109176894A (en) * | 2018-08-20 | 2019-01-11 | 苏州绿乘轻质绿色材料有限公司 | Gypsum light weight sand mortar integration production-transport-construction method |
| CN109053011A (en) * | 2018-08-20 | 2018-12-21 | 苏州绿乘轻质绿色材料有限公司 | The inorganic lightweight aggregate production method of hydrophobic type extruding and the inorganic lightweight aggregate of hydrophobic type extruding |
| CN109025296B (en) * | 2018-08-22 | 2021-04-23 | 上海中绿建材有限公司 | Integrated construction process of light plastering gypsum and facing putty |
| CN109053010B (en) * | 2018-09-27 | 2021-01-26 | 信阳市三元保温材料制造有限公司 | Hydrophobic perlite production process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4462835A (en) * | 1981-08-08 | 1984-07-31 | Otavi Minen Ag | Lightweight building material and method of producing the same |
| JP2001114578A (en) * | 1999-10-20 | 2001-04-24 | Mitsui Mining & Smelting Co Ltd | Method for producing water repellent expanded perlite |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4462835A (en) * | 1981-08-08 | 1984-07-31 | Otavi Minen Ag | Lightweight building material and method of producing the same |
| JP2001114578A (en) * | 1999-10-20 | 2001-04-24 | Mitsui Mining & Smelting Co Ltd | Method for producing water repellent expanded perlite |
Non-Patent Citations (4)
| Title |
|---|
| 憎水膨胀珍珠岩及其制品的研究与应用. 李全林.山西建材，第3期. 1999 |
| 憎水膨胀珍珠岩及其制品的研究与应用. 李全林.山西建材，第3期. 1999 * |
| 珍珠岩的加工工艺及若干深加工产品. 晓非.建材工业信息，第5期. 1995 |
| 珍珠岩的加工工艺及若干深加工产品. 晓非.建材工业信息，第5期. 1995 * |
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Granted publication date: 20081119 Termination date: 20120603 |