CN106830959B - A kind of high-efficiency insulated ramming mass - Google Patents

A kind of high-efficiency insulated ramming mass Download PDF

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CN106830959B
CN106830959B CN201710183852.2A CN201710183852A CN106830959B CN 106830959 B CN106830959 B CN 106830959B CN 201710183852 A CN201710183852 A CN 201710183852A CN 106830959 B CN106830959 B CN 106830959B
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ramming mass
silicon dioxide
dioxide gel
efficiency insulated
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CN106830959A (en
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杨光辉
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Luoyang Aoste Energy Technology Co Ltd
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Abstract

The present invention relates to a kind of high-efficiency insulated ramming masses, and with modified pearl rock, silicon dioxide gel and micro mist aluminium oxide are raw material, are modified pearl rock 62% according to weight percent, and silicon dioxide gel 30%, micro mist aluminium oxide 8% is made.The present invention is modified as the raw material for preparing high-efficiency insulated ramming mass by perlite, preparation process simply easily realizes, raw material is free of organic matter, nontoxic, to human body and environmental-friendly, product is not easy to reunite, easily molded, obtained ramming mass is suitable for the not easy working position of high temperature kiln insulating layer, and density and thermal conductivity are far smaller than existing ramming mass, and there is efficient insulation effect, fill up the blank of high temperature kiln insulating layer ramming mass technical field；And due to alleviating weight, the load-bearing of steel construction is greatly reduced, comprehensive performance is improved significantly.

Description

A kind of high-efficiency insulated ramming mass
Technical field
It is especially a kind of for the ultralight unsetting resistance to of high temperature kiln insulating layer the invention belongs to thermal insulation material technical field Fiery material, specifically a kind of high-efficiency insulated ramming mass.
Background technique
In industrial circle, all kiln bodies being higher than under normal temperature environment and furnace body, especially high temperature kiln, high-temperature smelting pot, in order to Heat losses are prevented, thermal insulation material is used inside furnace body or kiln body.The structure of Industrial Stoves is usually resistance to firer from inside to outside Make layer, insulating layer, steel frame construction layer, fire resisting working lining is located at the innermost layer of kiln, directly contacted with high-temperature medium be also possible to by To corroding and washing away, therefore, fire resisting working layer must have very high fire resistance and elevated temperature strength；Insulating layer is located at kiln The middle layer of furnace, it is not direct to be contacted with high-temperature medium, heat preservation is primarily served, the effect of heat losses is prevented, insulating layer is wanted Ask usually: thermal conductivity is small, and density is small, and heat insulation effect is good etc., is generally preferably protected using thermal insulation property in the building of insulating layer Warm brick, and at special-shaped position or the position constructed is inconvenient to it is necessary to using ramming mass.
At present there is no the ramming mass directly facing insulating layer, existing ramming mass is suitable for fire resisting working lining more, directly It is contacted with high-temperature medium, density is very big, and thermal conductivity is very high, substantially without heat insulation effect.The present invention has filled up the sky in this field It is white.
Summary of the invention
The technical problems to be solved by the invention are in view of the above shortcomings of the prior art, to provide a kind of high-efficiency insulated smash Dnockout, not direct to contact with high-temperature medium suitable for the insulating layer of high temperature kiln, all inorganic innocuous substances of raw material are free of Organic Ingredients, it is nontoxic, and preparation process simply easily realizes, easily molded, pollution is few, and product is not easy to reunite, and what is obtained smashes Dnockout density is small, light-weight, thermal conductivity is small, and heat insulation effect is good, and intensity is high, long service life.
The object of the invention to solve the technical problems adopts the following technical solutions to realize.
A kind of high-efficiency insulated ramming mass proposed according to the present invention, the weight percent of raw material and each raw material are as follows:
Modified pearl rock 45-75%,
Silicon dioxide gel 15-45%,
Micro mist aluminium oxide 5-15%.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
A kind of high-efficiency insulated ramming mass above-mentioned, wherein each raw material and its weight percent are as follows:
Modified pearl rock 62%,
Silicon dioxide gel 30%,
Micro mist aluminium oxide 8%.
Further, the silicon dioxide gel is low alkali high-viscosity nano silicon dioxide gel, pH=9-10；Institute Stating micro mist aluminium oxide is α-Al2O3Ultramicro-powder, d50=2 μm.
Further, the modified pearl rock is to obtain perlite ore by modification, specific method of modifying are as follows: will It is 20-30 mesh that perlite ore, which is crushed to partial size, then carries out expanding treatment at 1010-1030 DEG C, then with compound acid soak For 24 hours, perlite is separated from Compound-acid, is then dried.
Further, the Compound-acid is nitric acid, phosphoric acid, formic acid, hydrochloric acid, two or more in trichloroacetic acid Mixing.
Further, the preparation method of the high-efficiency insulated ramming mass specifically: by modified pearl rock, silicon dioxide gel With micro mist aluminium oxide feeding according to the weight ratio, it is put into blender and stirs evenly, be then sealed packaging.The present invention Ramming mass dispatch from the factory the shelf-life 3 months.
Present invention is characterized in that
(1), perlite ore is not flame-proof thermal insulation material, and the present inventor will not have refractory material spy by modification Property perlite be used as and prepare the raw material of the high-efficiency insulated ramming mass of unsetting thermal insulation material-, achieve good effect.Perlite The chemical component of ore are as follows: SiO2、Al2O3、Fe2O3、CaO、K2O、Na2O、MgO、H2O makes treasure due to containing alkali metal oxide The fire resistant heat preserving performance of pearl rock and ore is very bad, and the present invention is improved by the modified alkali metal content reduced in perlite The high temperature resistance of perlite, since modified perlite has, light, density is low, thermal coefficient is low, heat-resisting quantity is good Advantage greatly reduces the bulk density and thermal conductivity of ramming mass as the raw material of ramming mass.
(2) the micro mist aluminium oxide that the present invention uses is α-Al2O3Ultramicro-powder, the d of alumina particle in powder50=2 μm, grain Diameter is small, is evenly distributed, and improves the lowest total of the melting point of ramming mass, to improve the thermal insulation property of ramming mass.
(3) existing ramming mass is suitable for fire resisting working lining more, and density is mostly in 1.4g/cm3More than, thermal conductivity is mostly in 0.4w. (m.k)-1More than, substantially without heat insulation effect.
High-efficiency insulated ramming mass density of the invention is 0.22g/cm3, thermal conductivity is 0.06w. (m.k)-1, compared to existing Ramming mass, density of the invention is far smaller than the density of existing ramming mass, and has lower thermal conductivity, is substantially reducing furnace body While weight, the thermal insulation property of furnace body is improved, reduces the load-bearing requirements to furnace binding, heat insulation effect at least mentions High 5 times or more.
In conclusion a kind of high-efficiency insulated ramming mass of the present invention technically has significant progress, and there is apparent product Pole effect is really a new and innovative, progressive, practical new design.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention, And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can It is clearer and more comprehensible, special below to lift preferred embodiment, detailed description are as follows.
Detailed description of the invention
Nothing
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with Preferred embodiment, to a kind of high-efficiency insulated ramming mass proposed according to the present invention, specific embodiment, structure, feature and its Effect, detailed description is as follows.
The present invention is a kind of high-efficiency insulated ramming mass, is mainly used for high temperature kiln insulating layer abnormal shape position and is not easy to construct Position, be a kind of novel high thermal insulation material of lightweight, have thermal conductivity small, the advantages that density is small, and heat insulation effect is good, product is not Containing poisonous and harmful, high volatile material, to human body and environmental-friendly.
High-efficiency insulated ramming mass of the invention is made of following component according to weight percent:
Modified pearl rock 45-75%,
Silicon dioxide gel 15-45%,
Micro mist aluminium oxide 5-15%.
Preferably, the raw material proportioning of high-efficiency insulated ramming mass are as follows:
Modified pearl rock 62%,
Silicon dioxide gel 30%,
Micro mist aluminium oxide 8%.
Further, the silicon dioxide gel is low alkali high-viscosity nano silicon dioxide gel, pH=9-10；It is micro- Powder aluminium oxide is α-Al2O3Ultramicro-powder, alumina powder particle d50=2 μm.
Further, the modified pearl rock is to obtain ordinary pearl rock and ore by modification, specific method of modifying Are as follows: it is 20-30 mesh that ordinary pearl rock and ore, which is crushed to partial size, and moment expanding treatment is then carried out at 1010-1030 DEG C, then For 24 hours with compound acid soak, perlite is separated from Compound-acid, is then dried.
Further, the Compound-acid is nitric acid, phosphoric acid, formic acid, hydrochloric acid, two or more in trichloroacetic acid Mixing.
High-efficiency insulated ramming preparation method for material of the invention is simple: by modified pearl rock, silicon dioxide gel and micro mist oxygen Change aluminium feeding according to the weight ratio, be put into blender and stir evenly, be then sealed packaging, the factory shelf-life is 3 A month, technical process was simple to operation, did not had particular/special requirement to preparation condition, easy to accomplish.
Specific embodiment:
Embodiment 1
Raw material proportioning (by weight percentage): modified pearl rock 45%, silicon dioxide gel 40%, micro mist aluminium oxide 15%；Wherein, the pH of silicon dioxide gel is 9, the d of differential alumina powder particle50=2 μm；
The preparation of modified pearl rock: it is 20 mesh that perlite ore, which is crushed to partial size, and moment is then carried out at 1030 DEG C Expanding treatment, then the compound acid soak formed with nitric acid and hydrochloric acid is for 24 hours, perlite is separated from Compound-acid, drying is It can.
The preparation of ramming mass: three kinds of raw materials are proportionally put into stirrer for mixing and are stirred evenly.
Embodiment 2
Raw material proportioning (by weight percentage): modified pearl rock 50%, silicon dioxide gel 45%, micro mist aluminium oxide 5%； Wherein, the pH of silicon dioxide gel is 10, the d of differential alumina powder particle50=2 μm；
The preparation of modified pearl rock: it is 20 mesh that perlite ore, which is crushed to partial size, and moment is then carried out at 1020 DEG C Expanding treatment, then the compound acid soak formed with hydrochloric acid and phosphoric acid is for 24 hours, perlite is separated from Compound-acid, drying is It can.
The preparation of ramming mass: three kinds of raw materials are proportionally put into stirrer for mixing and are stirred evenly.
Embodiment 3
Raw material proportioning (by weight percentage): modified pearl rock 62%, silicon dioxide gel 30%, micro mist aluminium oxide 8%； Wherein, the pH of silicon dioxide gel is 9, the d of differential alumina powder particle50=2 μm；
The preparation of modified pearl rock: it is 30 mesh that perlite ore, which is crushed to partial size, and moment is then carried out at 1010 DEG C Expanding treatment, then the compound acid soak formed with trichloroacetic acid and hydrochloric acid is for 24 hours, and perlite is separated from Compound-acid, is dried It is dry.
The preparation of ramming mass: three kinds of raw materials are proportionally put into stirrer for mixing and are stirred evenly.
Embodiment 4
Raw material proportioning (by weight percentage): modified pearl rock 65%, silicon dioxide gel 30%, micro mist aluminium oxide 5%； Wherein, the pH of silicon dioxide gel is 10, the d of differential alumina powder particle50=2 μm；
The preparation of modified pearl rock: it is 30 mesh that perlite ore, which is crushed to partial size, and moment is then carried out at 1030 DEG C Expanding treatment, then the compound acid soak formed with formic acid and hydrochloric acid and trichloroacetic acid is for 24 hours, and perlite is isolated from Compound-acid Come, drying.
The preparation of ramming mass: three kinds of raw materials are proportionally put into stirrer for mixing and are stirred evenly.
Embodiment 5
Raw material proportioning (by weight percentage): modified pearl rock 75%, silicon dioxide gel 15%, micro mist aluminium oxide 10%；Wherein, the pH of silicon dioxide gel is 10, the d of differential alumina powder particle50=2 μm；
The preparation of modified pearl rock: it is 20 mesh that perlite ore, which is crushed to partial size, and moment is then carried out at 1020 DEG C Expanding treatment, then the compound acid soak formed with formic acid and hydrochloric acid is for 24 hours, perlite is separated from Compound-acid, drying is It can.
The preparation of ramming mass: three kinds of raw materials are proportionally put into stirrer for mixing and are stirred evenly.
Compound sour component used in the raw material composition and modified pearl rock of each embodiment see the table below 1:
Compound sour component used in each embodiment raw material of table 1. composition and modified pearl rock
Figure BDA0001254308680000051
The test block that ramming mass prepared by above 5 embodiments is made 160 × 40 × 40 is detected；By commercially available ramming Material is detected after the same method, and test performance the results are shown in Table 2:
The performance test results of each embodiment ramming mass of table 2. and existing ramming mass
Figure BDA0001254308680000052
By comparison: existing ramming mass density is big, thermal conductivity is big, and the present invention passes through preferred raw material, formula and technique, A kind of high-efficiency insulated ramming mass is obtained using full-inorganic raw material, the ramming mass density is smaller, and thermal conductivity is lower, and density ratio is existing Commercially available ramming mass reduces 69% or more, and thermal conductivity reduces 75% or more than existing commercially available ramming mass.Thermal insulation property is more It is good, it is entirely free of organic matter, it is nontoxic, to human body and environmental-friendly, do not generate toxic side effect.It is of the invention high-efficiency insulated to smash Dnockout alleviates the weight of ramming mass due to greatly reducing density, therefore can save a large number of expense in transport, and The load-bearing requirements to kiln steel construction, Equipment Foundations are reduced, entreprise cost is further decreased, are increased economic efficiency, society's effect Benefit.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification For the equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, according to the technical essence of the invention Any simple modification, equivalent change and modification to the above embodiments, all of which are still within the scope of the technical scheme of the invention.

Claims (1)

1. a kind of high-efficiency insulated ramming mass, it is characterised in that be made by following raw material according to weight percent:
Modified pearl rock 62%,
Silicon dioxide gel 30%,
Micro mist aluminium oxide 8%；
The silicon dioxide gel is low alkali high-viscosity nano silicon dioxide gel, pH=9；The micro mist aluminium oxide is α- Al2O3Ultramicro-powder, d50=2 μm；The method of modifying of the modified pearl rock are as follows: after crushing perlite ore at 1010 DEG C Carry out expanding treatment, then with trichloroacetic acid and hydrochloric acid formation compound acid soak for 24 hours after, perlite is isolated from Compound-acid Come, drying；
It three kinds of raw materials is proportionally put into stirrer for mixing stirs evenly and the high-efficiency insulated ramming mass, institute can be obtained The density for obtaining high-efficiency insulated ramming mass is 0.22g/cm3, cold crushing strength 0.46MPa, thermal conductivity is 0.06w. (m.k)-1； The heat preservation ramming mass is used for high temperature kiln insulating layer.
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CN103396129A (en) * 2013-07-25 2013-11-20 浙江锦诚耐火材料有限公司 Light-weight hot-blast furnace pipeline spray paint and application method thereof
CN103553687A (en) * 2013-11-09 2014-02-05 宁夏天纵泓光余热发电技术有限公司 Heat-insulating fireproof pouring material
CN104311047A (en) * 2014-10-07 2015-01-28 宁夏天纵泓光余热发电技术有限公司 Thermal-insulation refractory castable

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