CN111606594B - High-performance bonding modification excitant for building solid waste treatment - Google Patents
High-performance bonding modification excitant for building solid waste treatment Download PDFInfo
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- CN111606594B CN111606594B CN202010501636.XA CN202010501636A CN111606594B CN 111606594 B CN111606594 B CN 111606594B CN 202010501636 A CN202010501636 A CN 202010501636A CN 111606594 B CN111606594 B CN 111606594B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a high-performance bonding modification excitant for treating building solid waste, which comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass, the sodium carbonate, the hydrotalcite, the fluorgypsum and the sodium hydroxide is 5-15:2-4:2-4:10-20: 1-2; the part B comprises titanyl sulfate, acid and halogen salt, and the mass ratio of the titanyl sulfate to the acid to the halogen salt is 1-10:2-3: 2-3; the part C is polypropylene carbonate, redispersible latex powder and nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 1-5:1-2, which has the performances of environmental protection, good excitation performance and strong bonding performance.
Description
Technical Field
The invention belongs to the field of waste recycling, and particularly relates to a high-performance bonding modification excitant for building solid waste treatment.
Background
The construction solid waste is short for construction solid waste, sometimes called construction waste, and mainly comes from three links in construction activities: construction (production) of buildings, use and maintenance (use) of buildings, and demolition (scrapping) of buildings. The construction waste generated in the construction process mainly comprises excavated earthwork, broken bricks, concrete, mortar, pile heads, packaging materials and the like: the garbage generated in the using process mainly comprises decoration materials, plastics, asphalt, rubber and the like; the construction and dismantling waste materials such as waste concrete, waste bricks, waste tiles, waste steel bars, wood, cullet, phase material products and the like.
At present, the method for treating solid waste in China is more traditional, and the traditional treatment method is easy to cause secondary pollution and influence the ecology and the health of people. The landfill method has low cost, convenience and easy operation and strong adaptability, but the landfill treatment causes more serious pollution on the contrary due to the nondegradable property of the solid wastes of the building. The open-air stacking method is similar to landfill and is convenient and easy to operate, but all the open-air stacking methods belong to backward treatment modes, dust can be formed in strong wind weather to cause air pollution, and in rainy days, toxic substances can flow into a river channel along with rainwater, so that water pollution is caused, and the ecological environment is influenced. The burning has obvious benefits, saves land space, converts toxic substances into nontoxic substances, eliminates pathogens, has obvious reduction effect, and is also adopted by many cities to solve the problem of solid waste. However, the disadvantages of incineration are also obvious. The incineration cannot bring substantial solution to the treatment and incineration of the building solid wastes.
The main components of the construction waste mainly comprise old bricks, stones, concrete, wood and the like, wherein the waste concrete accounts for 48.35% by mass, the waste bricks and stones account for 37.42% by mass, and only the two wastes account for 85.77% of the construction waste. The components can be used as recycled aggregate after being slightly treated. In China, the construction solid waste is rapidly developed to be recycled, and the recycled bricks in parks in Beijing province and great-rise airport municipal roads, roadbeds and the like are all made of construction waste recycling products, so that economic benefits are realized, and the pressure of the environment is relieved.
Like other solid wastes, construction solid wastes generally contain alumina and silica, as well as other materials including magnesium, calcium, iron, copper and related compounds; in order to improve the activity of the building solid waste, the building solid waste is generally required to be activated, and the Si-O and Al-O related hydration activity is activated, so that the application range of the building solid waste is further improved.
The excitation of the existing building solid waste is generally alkali excitation, and the solid waste residue adopts various alkali excitation modes to excite the activity of the solid waste residue, so that the solid waste residue can really achieve very high strength, but has the following defects: a. poor volume stability and large shrinkage; b. if alkali excitation is adopted, the reaction risk of alkali-aggregate is high; c. the hardening speed is high, namely the setting time is difficult to control; d. alkali is separated, efflorescence and alkali is compounded during the use process; e. the cost is high; f. the adhesive property is not good.
There are also many related patent applications about the exciting agent of building solid waste, CN108117362B relates to a pavement base material of building rubbish and its preparation method, the pavement base material comprises the following components by mass: 95-96 parts of construction waste recycled aggregate, 4-5 parts of cementing material, 9.4-12.2 parts of water relative to the sum of the construction waste recycled aggregate and the cementing material, and 3.5-5.5 parts of alkali activator relative to the mass of the water. The road surface base material takes the construction waste and the industrial waste residue as main raw materials, and has the advantages of high strength, small drying shrinkage, long construction working time and the like. If the invention is applied on a large scale, the invention can not only produce considerable economic benefit, but also produce huge environmental protection benefit.
CN109776010A provides a method for making concrete aggregate by using slag, which comprises the following steps: s1, exciting the construction residue soil by using an alkali activator to generate a geopolymer material; s2, crushing and grading the geopolymer material to be used as a muck polymer coarse aggregate; wherein the diameter of the coarse aggregate is 10-30 mm. It not only makes reasonable use of construction waste, but also effectively improves the shortage problem of natural resources. Compared with recycled aggregate concrete, the strength of the concrete is improved, and the defect of increased dry shrinkage caused by high water absorption of the recycled aggregate is overcome. The current situations of potential safety hazards and environmental damage caused by stacking of construction wastes such as muck and the like as construction wastes are reduced, energy is saved, the ecological environment is protected, and the strategic target of sustainable development is met. The product of the invention has strong practicability and good working performance, is developed by utilizing the product, and can be applied to actual engineering in a large scale.
CN104556939B relates to a construction waste ash and a manufacturing method thereof, belonging to the technical field of construction materials. The building waste gypsum powder is prepared by taking building waste and gypsum as raw materials and adding a chemical excitant, wherein the raw materials comprise the following components in percentage by mass: 80-95% of construction waste and 7-20% of gypsum; the dosage of the chemical excitant is 0.01 to 0.06 percent of the total amount of the construction waste and the gypsum; the construction waste is a construction waste brick or a concrete slab block after metal and other impurities are removed. Its technical indexes reach and exceed the related standards, and its performance is superior to that of flyash. Can replace fly ash and be widely applied to concrete and cement products. The construction waste ash recycles a large amount of industrial waste as renewable resources, saves and replaces primary resources, and is beneficial to promoting the development of circular economy, reducing pollution and protecting ecological environment. No further pollution to the environment is generated in the production process.
CN104710118B relates to a ceramic tile polishing mud building rubbish base filling material and a preparation method thereof. The ceramic tile polishing mud building garbage-based filling material consists of a cementing material, a coagulation regulator and water; the cementing material is prepared from modified ceramic tile polishing mud, modified construction waste micro-powder and cement, wherein the modified construction waste micro-powder is prepared from construction waste and an exciting agent. The filling material provided by the invention has high waste utilization rate, can recycle ceramic tile polishing mud and construction waste, has good working performance, high mechanical property, excellent durability and simple production and construction process, and can be widely used for filling coal mines, mines and the like. The activator is one or more of sodium carbonate, sodium hydroxide, sodium sulfate or calcium hydroxide.
Therefore, the existing excitant still has the current situation that the excitation efficiency needs to be improved, the existing excitant pays little attention to the bonding performance, and the bonding performance has important influence on the subsequent utilization of the building solid waste; improvements in the high excitation and binding properties of activators are now desired.
Disclosure of Invention
The invention aims to solve the problems, and develops a high-performance bonding modification excitant for treating building solid wastes and a specific excitation application method thereof:
a high-performance bonding modification excitant for treating building solid waste is characterized by comprising three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass, the sodium carbonate, the hydrotalcite, the fluorgypsum and the sodium hydroxide is 5-15:2-4:2-4:10-20: 1-2; the part B comprises titanyl sulfate, acid and halogen salt, and the mass ratio of the titanyl sulfate to the acid to the halogen salt is 1-10:2-3: 2-3; the part C is polypropylene carbonate, redispersible latex powder and nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 1-5: 1-2.
Preferably, the halogen salt is one or more of sodium chloride, potassium chloride, sodium bromide, potassium bromide, sodium fluoride, potassium fluoride and calcium chloride.
Preferably, the acid is one or more of hydrochloric acid, sulfuric acid, acetic acid and phosphoric acid.
Preferably, the redispersible latex powder is one or more of ethylene/vinyl acetate copolymer, vinyl acetate/versatic acid ethylene copolymer and acrylic acid copolymer.
Preferably, the modulus of the water glass is 1 to 2.
Preferably, the fluorgypsum is a by-product of a hydrofluoric acid production process.
Preferably, the mass ratio of the A, B, C parts is 10-20:1-2: 2-5.
Preferably, the particle size of the silicon dioxide in the nano silicon dioxide ethanol solution is 10-80 nm.
The application of the high-performance bonding modification excitant for treating the solid waste of the building applies the high-performance bonding modification excitant to the solid waste treatment of the building.
Preferably, the specific application method is as follows:
(1) selecting a building solid waste raw material, and carrying out crushing, ball milling and screening treatment on the building solid waste raw material to obtain powder with the granularity of below 150 meshes;
(2) activating the powder at high temperature, wherein the high-temperature activation temperature is 800-; then cooling to 100-200 ℃, watering and hydrating for 1-5min to obtain activated powder;
(3) adding water into the activated powder to form slurry, adding the component A in the high-performance bonding modification excitant, stirring and mixing for 1-5min, then adding the component C, stirring and mixing for 1-5min, and finally adding the component B, stirring and mixing for 1-5 min.
Preferably, the weight ratio of the activated powder to the A component in the high-performance bonding modification excitant is 100: 10-20.
Preferably, the mass ratio of the A, B, C parts is 15:2: 5.
The invention has the technical effects that:
the invention provides an excitant which is green and environment-friendly, and has good excitability and strong bonding performance. The exciting agent comprises three parts, including three exciting processes, namely firstly, exciting mainly by water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide, activating chemical bonds of Al-O, Si-O and Al-O-Si in the building solid waste in a relatively alkaline environment, simultaneously, precipitating silicon and aluminum to quickly form a complex with sodium silicate, and providing powerful conditions for activating the building solid waste; the byproduct fluorgypsum generated by the hydrofluoric acid preparation process is selected, has a slower hydration speed compared with sodium silicate, sodium hydroxide and the like, can optimize and adjust the alkali excitation rate, and can optimize the compressive strength performance of the building solid waste due to less water requirement of the fluorgypsum in the excitation process;
the second step of excitation is the excitation of an organic-inorganic binder, the effect of the first step of excitation is cured by selecting an environment-friendly organic binder, and the binding property of the organic-inorganic binder is improved, particularly, the polypropylene carbonate is a binder with good biodegradability, higher toughening property and lower gas transmittance, is a more environment-friendly binder, and is integrally optimized with the redispersible latex powder and the nano-silica ethanol solution for the binding property of the building solid waste powder, and the waterproof property of the building solid waste powder is improved;
thirdly, the composite use of titanyl sulfate, acid and halogen salt is adopted for excitation, the excited solid waste powder of the building is rehydrated with the hydration product of the solid waste of the building under the action of the titanyl sulfate, the acid and the halogen salt, and the rehydrated solid waste powder of the building is mutually connected, and a large amount of flocculent gel with a mesh structure can be formed, so that the solid waste of the building has an obvious loose porous structure; the halogen salt can reduce the potential of hydration products, the halogen ions have strong diffusion capacity and can produce active substances with internal active substances, and metal ions such as iron, aluminum and the like contained in the building solid waste powder can form substances such as iron halide, aluminum sulfate, aluminum halide and ferrous sulfate which can be complexed, so that the bonding property is improved;
in the specific excitation application process, the mode of activating the building solid waste raw materials for three times and adding the exciting agent step by step is adopted, so that the excitation effect can be greatly improved. Specifically, crushing and ball milling treatment are carried out, so that the first physical activation of the building solid waste is realized, and the specific surface area is increased; the high-temperature activation removes carbon, sulfur, rubber and polymer impurities remained in the building solid waste, and the impurities are discharged in a gas form due to the high-temperature activation, so that a large amount of porosity is formed in the building solid waste, which is of great significance for subsequent further activation and excitation; the subsequent watering activation is carried out, the watering activation forms water vapor by watering at the temperature of 100-200 ℃, the industrial solid waste is activated, the watering amount can be selected according to the actual requirement, the process can further optimize the internal structure of the industrial solid waste, and hydrate the surface of the industrial solid waste, so as to improve the excitation efficiency; the exciting agent is added step by step for orderly three times of excitation, so that the exciting effect is comprehensively improved, the bonding property is improved, and the compressive strength and the setting time of the solid waste of the building can be improved.
Detailed Description
The present invention is described in further detail below with reference to specific examples and with reference to the data. It will be understood that these examples are intended to illustrate the invention and are not intended to limit the scope of the invention in any way.
Example 1: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Example 2: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 5:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Example 3: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:10: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Example 4: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:2:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Example 5: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 1:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Example 6: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 1: 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Example 7: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 10:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Example 8: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part (mass ratio of 20:2: 5); the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Comparative example 1: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 0; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Comparative example 2: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:0: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Comparative example 3: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 0:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Comparative example 4: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 0:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Comparative example 5: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:0:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Comparative example 6: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:0: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Comparative example 7: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, and the mass ratio of the titanyl sulfate to the acid to the halogen salt is 0:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Comparative example 8: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 0; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Comparative example 9: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and a nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 4: 0. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
Comparative example 10: a high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass to the sodium carbonate to the hydrotalcite to the fluorgypsum to the sodium hydroxide is 12:3:3:15: 1; the part B comprises titanyl sulfate, acid and halogen salt, wherein the mass ratio of the titanyl sulfate to the acid to the halogen salt is 8:3: 2; the part C is polypropylene carbonate, redispersible latex powder and nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 0: 4: 1. the acid is hydrochloric acid; the redispersible latex powder is acrylic copolymer; the modulus of the water glass is 1.2; A. b, C part is 15:2: 5; the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 60 nm. The halogen salt is sodium chloride. The fluorgypsum is a by-product of the hydrofluoric acid production process.
The exciting agents in examples 1-8 and comparative examples 1-10 are used for exciting building solid wastes, and the building solid wastes are mullite light waste bricks, and the application method is as follows:
(1) selecting a building solid waste raw material, and carrying out crushing, ball milling and screening treatment on the building solid waste raw material to obtain powder with the granularity of below 150 meshes;
(2) activating the powder at high temperature, wherein the high-temperature activation temperature is 900 ℃, and the high-temperature activation time is 3 hours; then cooling to 150 ℃, watering and hydrating for 2min to obtain activated powder;
(3) adding water into the activated powder to form slurry, then adding the component A in the high-performance bonding modification excitant, stirring and mixing for 5min, then adding the component C, stirring and mixing for 2min, and finally adding the component B, stirring and mixing for 3 min. The weight ratio of the activated powder to the component A in the high-performance bonding modification excitant is 100: 20.
And (3) stirring, mixing and exciting the building solid waste, forming, standing for 24 hours, demoulding, and naturally curing. The gel time and compressive strength were as follows:
in the specific application process, the excitant in the example 1 is adopted, and the powder in the comparative example 11 is the building solid waste which is not subjected to ball milling treatment; comparative example 12 is the building solid waste treated by only selecting the building solid waste raw material, and carrying out crushing, ball milling and screening treatment on the raw material to obtain powder with the granularity of below 150 meshes; comparative example 13 is that only the building solid waste raw material is selected in step (1), and is crushed, ball-milled and screened to obtain powder with the granularity of below 150 meshes; (2) activating the powder at high temperature, wherein the high-temperature activation temperature is 900 ℃, and the high-temperature activation time is 3 hours to obtain the powder; comparative example 14 is that (1) the building solid waste raw material is selected, and is crushed, ball-milled and screened to obtain powder with the granularity of below 150 meshes; (2) watering and hydrating the powder for 2min at 150 ℃ to obtain activated powder; comparative example 15 is (1) selecting a construction solid waste raw material, and performing crushing, ball milling and screening treatment on the raw material to obtain powder with the granularity of below 150 meshes; (2) activating the powder at high temperature, wherein the high-temperature activation temperature is 600 ℃, and the high-temperature activation time is 3 hours; then cooling to 150 ℃, watering and hydrating for 2min to obtain activated powder;
and (3) stirring, mixing and exciting the building solid waste, forming, standing for 24 hours, demoulding, and naturally curing. The gel time and compressive strength were as follows:
it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A high-performance bonding modification excitant for building solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, sodium carbonate, hydrotalcite, fluorgypsum and sodium hydroxide; the mass ratio of the water glass, the sodium carbonate, the hydrotalcite, the fluorgypsum and the sodium hydroxide is 5-15:2-4:2-4:10-20: 1-2; the part B comprises titanyl sulfate, acid and halogen salt, and the mass ratio of the titanyl sulfate to the acid to the halogen salt is 1-10:2-3: 2-3; the part C is polypropylene carbonate, redispersible latex powder and nano-silica ethanol solution, and the mass ratio of the polypropylene carbonate, the redispersible latex powder and the nano-silica ethanol solution is 1-5:1-5: 1-2.
2. The high-performance bonding modification excitant for building solid waste treatment according to claim 1, wherein: the acid is one or more of hydrochloric acid, sulfuric acid, acetic acid and phosphoric acid, and/or the halide salt is one or more of sodium chloride, potassium chloride, sodium bromide, potassium bromide, sodium fluoride, potassium fluoride and calcium chloride.
3. The high-performance bonding modification excitant for building solid waste treatment according to claim 1, wherein: the redispersible latex powder is one or more of ethylene/vinyl acetate copolymer, vinyl acetate/versatic acid ethylene copolymer and acrylic acid copolymer.
4. The high-performance bonding modification excitant for building solid waste treatment according to claim 1, wherein: the water glass has a modulus of 1-2, and/or the fluorgypsum is a by-product of a hydrofluoric acid production process.
5. The high-performance bonding modification excitant for building solid waste treatment according to claim 1, wherein: A. b, C the mass ratio of the parts is 10-20:1-2: 2-5.
6. The high-performance bonding modification excitant for building solid waste treatment according to claim 1, wherein: the grain diameter of the silicon dioxide in the nano silicon dioxide ethanol solution is 10-80 nm.
7. The application of the high-performance bonding modification excitant for building solid waste treatment according to any one of claims 1 to 6, wherein the high-performance bonding modification excitant is applied to the building solid waste treatment.
8. Use according to claim 7, characterized in that: the specific application method is as follows:
(1) selecting a building solid waste raw material, and carrying out crushing, ball milling and screening treatment on the building solid waste raw material to obtain powder with the granularity of below 150 meshes;
(2) activating the powder at high temperature, wherein the high-temperature activation temperature is 800-; then cooling to 100-200 ℃, watering and hydrating for 1-5min to obtain activated powder;
(3) adding water into the activated powder to form slurry, adding the component A in the high-performance bonding modification excitant, stirring and mixing for 1-5min, then adding the component C, stirring and mixing for 1-5min, and finally adding the component B, stirring and mixing for 1-5 min.
9. Use according to claim 8, characterized in that: the weight ratio of the activated powder to the component A in the high-performance bonding modification excitant is 100: 10-20.
10. Use according to claim 8, characterized in that: the mass ratio of the A, B, C part is 15:2: 5.
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