Production method of cold-foaming fly ash unfired ceramsite
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A production method and technology of fly ash, applied in ceramic products, sustainable waste treatment, solid waste management, etc., can solve the problems of high water absorption, low strength, brine return, etc., achieve good product quality, reduce production costs, The effect of simple process
Inactive Publication Date: 2011-12-07
杨子江 +1
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[0003] The purpose of this invention is to provide a kind of production method of cold-foaming fly ash unfired ceramsite, this method is main raw material with industrial waste fly ash, cement, sodium silicate, and water-soluble resin is made endoplasmic physical modification, It overcomes the problems of high water absorption, brine return, corrosion, and low strength, saves national land resources, improves the urban environment, and has a simple process and low cost
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Embodiment 1
[0016] Describe the specific process of the present invention in detail below in conjunction with accompanying drawing.
[0017] 1) preparation of mixed slurry;
[0018] After the fly ash is wheel-milled, pass through a 80-100 mesh sieve, mix with a mixer according to the mass ratio of fly ash, cement, and sodium silicate 1.5:1:0.2, and then add a certain amount of water-based resin calcium polyacrylate, water , admixture; water-based resin calcium polyacrylate is 1% by weight of cement, and water is 55% by weight of the above-mentioned mixture; the effect of admixture is waterproof; accelerate the solidification of concrete and increase strength; the addition is 2-2% of the amount of cement 3%, admixture made of bile alum CuSO 4 ·5H 2 O, red alum K 2 Cr·O 11 2H 2 O, alum KAl(SO 4 ), purple alum KCr (SO 4 ) 2 Mixed, according to the weight ratio of 1:1:1:1, add 60 times the weight of the above four mixtures of water, 400 times the weight of the above four mixtures of s...
Embodiment 2
[0026] 1) preparation of mixed slurry;
[0027] Magnesium oxychloride cement is used as the cementitious material, and the specific materials are in parts by weight: 50 parts of fly ash, 40 parts of magnesium oxide, 13-15 parts of anhydrous magnesium sulfate, 3 parts of anhydrous magnesium chloride, 5 parts of additive calcium sulfate, 0.6 part of melamine resin, and the amount of water added is 60% of the above-mentioned total weight.
[0028] 2) The foaming liquid foams;
[0029] Add a commercially available foaming agent (rosin alkali saponin) into the foaming tank at a mass ratio of 1:25 to water, and perform mechanical foaming. The foaming time is 3-5 minutes. At this time, a fine white and uniform foam is obtained, and then add The foam-fixing agent is solidified after half a minute;
[0030] 3) Mixing, extruding, cutting and forming of pulp and bubbles;
[0031] Mix the above-mentioned slurry and foam, and carry out mechanical mixing according to the volume ratio of ...
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Abstract
A production method of cold foaming fly ash unfired haydite has the following steps that: 1.the fly ash after being wheel grinded is sieved by sieve meshes with the size of 80-100 meshes. Then the fly ash, concrete and sodium silicate are mixed evenly by a blender according to a weight proportion of 1.5:1:0.2. At the same time a certain quantity of water-absorbing resin polyacrylic acid calcium, water and additive are added. The materials are blended evenly into slurry. The foaming agent is foamed by mechanical method and then is solid foamed through chemical way. The slurry is blended with the foam according to a volume proportion of 1:3-4. The evenly blended slurry is sent into pregelation groove after going through pregelation and setting, then squeezed, cut and molded by dry powder particle rotation. Compared with the prior art, the invention has following beneficial effects that clay resource is saved by adopting industrial waste materials such as fly ash, concrete and sodium silicate as main materials; processing technique is simplified by adopting the cold foaming technique and molding through extrusion, segment and dry powder particle rotation; the production cost is reduced and has good quality.
Description
technical field [0001] The invention relates to raw materials of building materials, in particular to a method for producing ceramsite by using industrial waste fly ash, cement and sodium silicate as main raw materials through cold foaming technology. Background technique [0002] Ceramsite belongs to the raw material of building materials. Its main function is to reduce the bulk density and heat preservation of building materials. There are many types due to different classifications. It has been used in the field for more than ten years, but most of them are clay sintered. With the development of the construction industry, clay resources are increasingly scarce, and clay sintered ceramsite can no longer meet the market demand. Contents of the invention [0003] The purpose of this invention is to provide a kind of production method of cold-foaming fly ash unfired ceramsite, this method is main raw material with industrial waste fly ash, cement, sodium silicate, and wate...
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