A kind of light weight castable refractory and preparation method thereof
Technical field
The present invention relates to lightweight refracrory, especially a kind of light weight castable refractory and preparation method thereof.
Background technology
When fire window normal switching-off is met, the temperature of window exceedes middle heat insulating strip (120 DEG C) fusing point and aluminium alloy extrusions (666
DEG C) fusing point when, surfacing will start to melt, and common broken-bridge aluminum alloy window first will disconnect from middle (heat insulating strip position).
Aluminum heat insulation fire window maintains the mechanism of heat insulation of existing aluminium alloy extrusions, on this basis in order to resist whole window
The fusing of the aluminium alloy and heat insulating strip of concrete on fire output is met, glass bead Fireproof thermal insulation mortar is filled in door-window opening gap,
Profile cavity, fixed glass chamber are filled with light weight castable refractory, and its feature low thermal conductivity, thermal capacity are low, volume stability is good,
With the light thermal-shield refractory material compared with high fluidity, 1100 DEG C -1400 DEG C of high temperature resistant.Fire resisting energy of its injection to whole window
Power, heat-insulating capability are significantly improved, it is ensured that the heat-proof quality of whole window.
The content of the invention
Present invention seek to address that above mentioned problem, there is provided a kind of light weight castable refractory, its injection can improve whole window
Refractory ability, heat-insulating capability, it is ensured that the heat-proof quality of whole window.The technical scheme that it is used is as follows:The invention provides one
Light weight castable refractory is planted, is made up of the raw material including following weight portion:
Preferably it is made up of the raw material including following weight portion:
Preferably, the aggregate (playing the refractory particle material of skeleton function) selected from ceramic fibre, alumina silicate fibre it is a kind of or
Two kinds of arbitrary proportion combinations.
Preferably, the fire resisting pulvis is calcium carbide desulfurizing agent.
Preferably, the coagulant is waterglass, gypsum, saltcake one or more arbitrary proportions combination.
Preferably, the glidant is selected from microcrystalline cellulose, superfine silica gel powder one or two arbitrary proportions combination.
Preferably, the refractory particle is selected from perlite, vermiculite power one or two arbitrary proportions combination.
A kind of preparation method of light weight castable refractory, comprises the following steps:
(1) mixed method:In mixer, first mixing aggregate, refractory cement, refractory particle, coagulant, glidant are fallen
Enter in mixer, it is dry-mixed 2-4 minutes;Stirring to siccative color it is uniform, be subsequently adding water, stirring is equal to castable dyeing
It is even, with certain mobility.
(2) mixing and stirring material should be finished in 30 minutes, prevent that initial set occurs because interval time crosses long material, influence engineering construction
Quality.
(3) construction method uses casting, and equipment is gently beaten after cast, and trickling is uniform.
Material keeping at the scene:
Neat, holding drying should be stored classifiedly, Exposure to Sunlight is prevented, is drenched with rain, makes moist, and prevent the pollution of other articles, especially
Prevent the pollution of soda acid thing.
Mixer explanation:Mixing plant preferably uses the forced mixer of suitable capacity, rotating speed 15-20 to turn/min.
Castable is required with water:Using the life drinking public water supply of cleaning, pH value is 6.7-7.5, cl-≤2ug/ml, K
+, Na+≤200mg/l, seawater, salt solution, acid, buck, the contaminated water containing silt is unusable.
Points for attention:
(1) must first mixing aggregate and coagulant pour into mixer it is dry-mixed it is uniform after can just add water, after otherwise adding water very
Hardly possible is well mixed.
(2) most preferably 15-30 DEG C of construction environments temperature, environment temperature is too low to be caused castable not solidify or solidify slow,
Environment temperature is too high to cause castable solidification too fast, it is impossible to construct.
Compared with prior art, the light weight castable refractory that the present invention is provided, behind injection profile cavity, fixed glass chamber, it
Low thermal conductivity, thermal capacity is low, volume stability is good, with the light thermal-shield refractory material compared with high fluidity, high temperature resistant 1100
℃-1400℃.It is self-bonding, certainly sintering, self-expanding the characteristics of under the conditions of applied at elevated temperature.Experimental result table is burnt through scene
It is bright:Its injection improves twice and has a surplus to the refractory ability of whole window, heat-insulating capability, it is ensured that the heat-proof quality of whole window.
Specific embodiment:
Embodiment 1 is made up the invention provides a kind of light weight castable refractory of the raw material including following weight portion:
Preferably, the light weight castable refractory that the present invention is provided is made up of the raw material including following weight portion:
Preferably, the aggregate (playing the refractory particle material of skeleton function) selected from ceramic fibre, alumina silicate fibre it is a kind of or
Two kinds of arbitrary proportion combinations;The fire resisting pulvis is calcium carbide desulfurizing agent;The coagulant is waterglass, and gypsum, saltcake is a kind of
Or several arbitrary proportion combinations;The glidant is selected from microcrystalline cellulose, superfine silica gel powder one or two arbitrary proportions combination;Institute
State refractory particle and be selected from perlite, vermiculite power one or two arbitrary proportions combination.
The present invention is not defined for the species of above-mentioned alumina silicate fibre and source, preferably commercially available, more preferably adopts
The alumina silicate fibre produced with Shandong Luyang share co.,ltd.
Ceramic fibre of the present invention is by originals such as Raolinite clinker, alumina powder, Cab-O-sil, the zircon sands of high-purity
Material forms fluid in the melting of industrial furnace high temperature.Then silk into threadiness is got rid of using compressed air spraying or with tumbling machine, is passed through
Condensers collection cotton is crossed, ceramic fiber cotton is formed.
In mixer, first mixing aggregate, refractory cement, refractory particle, coagulant, glidant are poured into mixer,
It is dry-mixed 2-4 minutes;Stirring to siccative color it is uniform, be subsequently adding water, stir to castable even dyeing, with certain
Mobility.
Embodiment 2 is made up the invention provides a kind of light weight castable refractory of the raw material including following weight portion:Silicon
40 parts of sour aluminum fiber, 6 parts of calcium carbide desulfurizing agent, 20 parts of refractory cement, 1 part of coagulant, 1 part of glidant, 15 parts of refractory particle.
The middle coagulant of the present embodiment preferably (gypsum:Saltcake)=(1:1), glidant preferably (microcrystalline cellulose:Micro mist silicon
Glue)=(1:1), refractory particle preferably (perlite:Vermiculite power)=(1:1);In mixer, first will mixing aggregate, fire resisting water
Mud, refractory particle, coagulant, glidant are poured into mixer, dry-mixed 2-4 minutes;Stirring to siccative color it is uniform, then
Water is added, is stirred to castable even dyeing, with certain mobility.
Embodiment 3 is made up the invention provides a kind of light weight castable refractory of the raw material including following weight portion:Silicon
40 parts of sour aluminum fiber, 6 parts of calcium carbide desulfurizing agent, 20 parts of refractory cement, 1 part of waterglass, 1 part of glidant, 15 parts of refractory particle.
The middle coagulant of the present embodiment preferably (gypsum:Saltcake)=(1:1), refractory particle preferably (perlite:Vermiculite power)
=(1:1);In mixer, first mixing aggregate, refractory cement, refractory particle, coagulant, glidant are poured into mixer,
It is dry-mixed 2-4 minutes;Stirring to siccative color it is uniform, be subsequently adding water, stir to castable even dyeing, with certain
Mobility.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.