阅读说明：本技术 工业固废处理用高性能粘结改性激发剂 (High-performance bonding modification excitant for industrial solid waste treatment ) 是由 黄勇 黄岩 袁捷 于 2020-06-04 设计创作，主要内容包括：本发明公开了一种工业固废处理用高性能粘结改性激发剂,包括三部分组成,A部分包括水玻璃,生石灰,水滑石和氢氧化钠；水玻璃,生石灰,水滑石和氢氧化钠四者的质量比为10-15:2-4:2-4:1-2；B部分包括硫酸氧钛和酸,硫酸氧钛和酸的质量比为6-10:2-3；C部分为聚碳酸亚丙酯,可再分散乳胶粉和纳米二氧化硅乙醇溶液,聚碳酸亚丙酯,可再分散乳胶粉和纳米二氧化硅乙醇溶液的质量比为1-5:1-5：1-2,其具有绿色环保且激发性能好,粘结性能强的性能。(The invention discloses a high-performance bonding modification excitant for industrial solid waste treatment, which comprises three parts, wherein the part A comprises water glass, quicklime, hydrotalcite and sodium hydroxide; the mass ratio of the water glass, the quicklime, the hydrotalcite and the sodium hydroxide is 10-15:2-4:2-4: 1-2; the part B comprises titanyl sulfate and acid, and the mass ratio of the titanyl sulfate to the acid is 6-10: 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.)

1. A high-performance bonding modification excitant for industrial solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, quicklime, hydrotalcite and sodium hydroxide; the mass ratio of the water glass, the quicklime, the hydrotalcite and the sodium hydroxide is 10-15:2-4:2-4: 1-2; the part B comprises titanyl sulfate and acid, and the mass ratio of the titanyl sulfate to the acid is 6-10: 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.

2. The high-performance bonding modification excitant for industrial solid waste treatment as claimed in claim 1, wherein: the acid is one or more of hydrochloric acid, sulfuric acid, acetic acid and phosphoric acid.

3. The high-performance bonding modification excitant for industrial solid waste treatment as claimed in 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 industrial solid waste treatment as claimed in claim 1, wherein: the modulus of the water glass is 1-2.

5. The high-performance bonding modification excitant for industrial solid waste treatment as claimed in claim 1, wherein: A. b, C the mass ratio of the parts is 5-10:1-2: 1-2.

6. The high-performance bonding modification excitant for industrial solid waste treatment as claimed in 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 industrial solid waste treatment as defined in claims 1-6, wherein the high-performance bonding modification excitant is applied to the industrial solid waste treatment.

8. Use according to claim 7, characterized in that: the specific application method is as follows:

(1) selecting industrial solid waste raw materials, and carrying out crushing, ball milling and screening treatment on the industrial solid waste raw materials to obtain powder with the granularity of below 150 meshes;

(2) activating the powder at high temperature, wherein the high-temperature activation temperature is 500-700 ℃, and the high-temperature activation time is 2-4 hours; 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: 1-5.

10. Use according to claim 8, characterized in that: the mass ratio of the A, B, C part is 6:2: 1.

Technical Field

The invention belongs to the field of waste recycling, and particularly relates to a high-performance bonding modification excitant for industrial solid waste treatment.

Background

Industrial solid waste is a short term for industrial solid waste and generally refers to solid waste produced in industrial production activities. Industrial solid wastes are more and more in quantity in our life and production process than in other industry, and with the development of industrial production, the quantity of industrial wastes is also more and more. The difficulty of industrial solid waste treatment mainly lies in large quantity, various kinds, complex components and difficult treatment. The treatment of industrial solid wastes also has great influence on the environment ecology, and particularly, the ecological environment is irreversibly influenced by a certain landfill and ocean investment method.

The treatment of common industrial solid wastes also becomes a focus of attention at present, and can become industrial raw materials or energy sources after proper process treatment, and some industrial wastes are prepared into various products, such as industrial materials of cement, concrete aggregate, tiles, fibers, cast stone and the like, or energy sources and industrial raw materials are recovered from the industrial raw materials; further can be used for treating waste water, extinguishing fire in mines, and used as chemical fillers and the like. In the process industry, however, the activator is a very important treatment.

Common industrial solid wastes generally contain alumina and silica, as well as other materials, including related compounds such as magnesium, calcium, iron, copper, etc.; in order to improve the activity of the industrial solid waste, the industrial solid waste is generally required to be activated, and the Si-O and Al-O related hydration activity in the industrial solid waste is activated, so that the application range of the industrial solid waste is improved.

The excitation of the existing industrial solid waste is generally alkali excitation, and the industrial waste residue adopts various alkali excitation modes to excite the activity of the industrial waste residue, so that the industrial 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 related to activator at present, CN106045361B relates to a preparation method of alkali slag concrete composite activator and concrete mixture, the composite activator applied in alkali slag concrete is formed by mixing one or two compositions of solid alkali carbonate and alkali bicarbonate with solid sodium hydroxide; the preparation method of the mixture comprises the following steps of firstly, preparing a mixture containing an active powder material, the composite exciting agent and a water material for mixing; the composite activator of the technical scheme can solve the technical defect that the production process flow is complex when the dissolved sodium hydroxide is adopted for the sodium hydroxide in the alkali slag concrete at present, the solid activator does not need to be dissolved and cooled in advance, the production link is simplified, the production cost is reduced, the application range is wide, and retarder is not needed to be added; CN107352825B discloses a lead-zinc ore tailing exciting agent and application thereof. The exciting agent for the lead-zinc ore tailings comprises blast furnace slag, fly ash, hydrotalcite and a water reducing agent. Simultaneously discloses the application of the exciting agent for the tailings of the lead-zinc ores in the preparation of the filling material for the lead-zinc ores. The excitant can efficiently activate amorphous silicon-rich aluminum components in the lead-zinc ore tailings, and grows into C-A-S-H gel with gelling capacity on the basis of a flat calcium layer on the basis of precursor generation, so that solid wastes are effectively utilized to generate a gelling material, and the purpose of filling the solid wastes is achieved. CN108439831B discloses an excitant and a red mud fly ash cementing material. The activator consists of polymeric active aluminum, sodium hydroxide, sodium silicate and cement in the following mass percent: 30-35% of polymerized active aluminum, 10-20% of sodium hydroxide, 10-20% of sodium silicate and 35-40% of cement. After being mixed according to the weight percentage, the excitant is mixed into the red mud fly ash cementing material by 0.5-1.5 percent, the 7d strength can be improved by 15-35 percent, and the 28d strength can be improved by 30-50 percent. The invention can effectively stimulate the activity of the red mud fly ash cementing material, improve the strength of the cementing material, achieve the purpose of consuming a large amount of industrial wastes such as red mud, fly ash and the like, and has remarkable social benefit and economic benefit.

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 industrial solid wastes; 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 industrial solid waste treatment and a specific excitation application method thereof:

a high-performance bonding modification excitant for industrial solid waste treatment is characterized in that: comprises three parts, wherein the part A comprises water glass, quicklime, hydrotalcite and sodium hydroxide; the mass ratio of the water glass, the quicklime, the hydrotalcite and the sodium hydroxide is 10-15:2-4:2-4: 1-2; the part B comprises titanyl sulfate and acid, and the mass ratio of the titanyl sulfate to the acid is 6-10: 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 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 mass ratio of the A, B, C parts is 5-10:1-2: 1-2.

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 industrial solid waste treatment is to apply the high-performance bonding modification excitant to the industrial solid waste treatment.

Preferably, the specific application method is as follows:

(1) selecting industrial solid waste raw materials, and carrying out crushing, ball milling and screening treatment on the industrial solid waste raw materials to obtain powder with the granularity of below 150 meshes;

(2) activating the powder at high temperature, wherein the high-temperature activation temperature is 500-700 ℃, and the high-temperature activation time is 2-4 hours; 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 component A in the high-performance bonding modification excitant is 100: 1-5.

Preferably, the mass ratio of the A, B, C parts is 6:2: 1.

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, wherein the exciting process mainly comprises water glass, quicklime, hydrotalcite and sodium hydroxide, chemical bonds of Al-O, Si-O and Al-O-Si in industrial solid wastes are activated in a relatively alkaline environment, simultaneously, precipitation of silicon and aluminum can rapidly form a complex with sodium silicate, and a powerful condition is provided for activation of the industrial solid wastes; 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 industrial solid waste powder, and the waterproof property of the industrial solid waste powder is improved; thirdly, the composite use of titanyl sulfate and acid is adopted for excitation, the excited industrial solid waste powder and the industrial solid waste hydration product are rehydrated under the action of titanyl sulfate and acid and are mutually connected, and a large amount of flocculent gel with a net structure can be formed, so that the industrial solid waste has an obvious loose porous structure, and metal ions such as iron, aluminum and the like contained in the industrial solid waste powder can form substances capable of complexing such as iron halide, aluminum sulfate, aluminum halide, ferrous sulfate and the like, so that the bonding property is improved;

in the specific excitation application process, the mode of activating the industrial 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 industrial solid waste is realized, and the specific surface area is increased; the high-temperature activation removes impurities such as carbon, sulfur and organic matters remained in the industrial 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 industrial 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 activator is added step by step for orderly three times of excitation, thereby comprehensively improving the excitation effect, improving the binding property and improving the compression strength and the setting time of the industrial solid waste.

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.