阅读说明：本技术 一种高分子环保免蒸树脂加气块砖及其制备方法 (High-molecular environment-friendly non-autoclaved resin aerated block brick and preparation method thereof ) 是由 张哲� 于 2020-11-26 设计创作，主要内容包括：本发明公开了一种高分子环保免蒸树脂加气块砖及其制备方法,涉及危险废物综合利用技术领域,加气块砖由如下重量份数的原料制备而成：废环氧树脂粉450-550份、水泥150-250份、铝粉0.2-0.6份、添加剂0.8-1.5份、水150-200份。本发明一种高分子环保免蒸树脂加气块砖利用废环氧树脂粉与水泥掺混制作混凝土砌块,用作建筑材料,具有质轻、导热性能低、抗渗性强、吸水率小的优点,能有效减轻建筑物自重,用于外墙结构,可大幅降低采暖制冷的能耗,满足建筑节能要求。(The invention discloses a high-molecular environment-friendly non-autoclaved resin aerated block brick and a preparation method thereof, and relates to the technical field of comprehensive utilization of hazardous wastes, wherein the aerated block brick is prepared from the following raw materials in parts by weight: 550 parts of waste epoxy resin powder 450-. The high-molecular environment-friendly non-autoclaved resin aerated block brick disclosed by the invention is used for preparing a concrete block by mixing waste epoxy resin powder and cement, is used as a building material, has the advantages of light weight, low heat conductivity, strong impermeability and low water absorption, can effectively reduce the self weight of a building, is used for an outer wall structure, can greatly reduce the energy consumption of heating and refrigeration, and meets the energy-saving requirement of the building.)

1. The high-molecular environment-friendly non-autoclaved resin aerated block brick is characterized by being prepared from the following raw materials in parts by weight: 550 parts of waste epoxy resin powder 450-.

2. The aerated block brick of claim 1, wherein the aerated block brick is prepared from the following raw materials in parts by weight: 493.5 parts of waste epoxy resin powder, 205 parts of cement, 0.4 part of aluminum powder, 1.1 part of additive and 180 parts of water.

3. The aerated block brick of claim 1 wherein the additive is sodium fatty alcohol-polyoxyethylene ether sulfate.

4. A method of making an aerated block according to any of claims 1 to 3, wherein the method comprises the steps of:

conveying cement into a factory by adopting a tank truck, then conveying the cement into a cement silo for temporary storage through a closed pipeline by pneumatic conveying, then conveying the cement into a proportioning bin by a screw conveyor, and feeding the cement into a stirrer after metering from the proportioning bin; conveying bagged waste epoxy resin powder in a storage warehouse into a raw material silo for temporary storage through a closed pipeline by negative pressure pneumatic conveying, then conveying the powder into a proportioning bin by a screw conveyor, and feeding the powder into a stirrer after metering from the proportioning bin; pouring aluminum powder and an additive into a constant feeder respectively, then inputting the aluminum powder and the additive into a stirrer through a closed pipeline after metering, and enabling water to enter a water metering hopper through a water pipe and enter the stirrer through a pipeline after metering;

the raw materials entering the stirrer are uniformly stirred and mixed, then foamed, sent into a mould for forming, and then sequentially subjected to demoulding, static curing, cutting, airing, packaging and stacking.

5. The method for preparing the aerated block brick according to claim 4, wherein the tank car is connected with the cement silo by a closed pipeline in the feeding process of the cement, a first pulse bag type dust collector is arranged above the cement silo, and the cement in the cement silo generates particles when falling into the proportioning bin through a screw conveyer, is collected by the gas collecting hood and is treated by the first pulse bag type dust collector; the pipeline of the screw conveyer is closed, and no particulate matter is generated in the cement conveying process.

6. The method for preparing the aerated block brick according to claim 4, wherein during the feeding process, the bagged epoxy resin powder enters the raw material silo in a negative pressure pneumatic conveying mode, the conveying pipeline is closed, a second pulse bag type dust collector is arranged above the raw material silo, the epoxy resin powder in the raw material silo falls into the proportioning bin through the screw conveyor, is subjected to negative pressure suction and then is treated by the second pulse bag type dust collector, and the pipeline of the screw conveyor is closed, so that no particulate matters are generated during the conveying process of the epoxy resin powder.

7. The method for preparing the aerated block brick according to claim 4, wherein the stirring and mixing time is 160 seconds and the stirring speed is 650-700 rpm.

8. The method of making an aerated block according to claim 4, wherein the foaming time is from 10 to 20 minutes.

9. The method for preparing the aerated block brick according to claim 4, wherein the rest mode is indoor or heaven-leaking stacking, and the rest time is two to three days.

Technical Field

The invention relates to the technical field of comprehensive utilization of hazardous wastes, in particular to a high-molecular environment-friendly non-steamed resin aerated block brick and a preparation method thereof.

Background

The waste epoxy resin powder is waste resin powder generated after the waste copper-clad plates, printed circuit boards and circuit boards are crushed and metal-separated, and can cause harm to the environment if directly discarded. At present, the disposal mode of the waste epoxy resin powder is mainly incineration, landfill or comprehensive utilization, and the disposal mode of the waste epoxy resin powder by incineration at home and abroad is less at present because the mode has serious secondary pollution. Meanwhile, the waste epoxy resin powder has the characteristics of looseness, difficulty in compaction and the like, the landfill difficulty is high, the generation amount of household garbage is increased year by year along with the development of the social and economic levels, each household garbage landfill site is close to full-load operation, and the landfill pressure is high, so that the household garbage landfill generally does not receive the waste epoxy resin powder. The method for treating waste epoxy resin powder by adopting a comprehensive utilization mode to achieve the effect of recycling waste is a widely advocated mode at present.

According to investigation, at present, no waste epoxy resin powder comprehensive utilization enterprises exist in Henan province, and waste epoxy resin powder generated by waste circuit board sorting enterprises in the province is mostly transported to other places for disposal or utilization, so that the cost is high, and the transportation risk is increased.

Disclosure of Invention

Therefore, the invention provides a high-molecular environment-friendly non-steamed resin aerated block brick and a preparation method thereof, and aims to solve the problems that no waste epoxy resin powder comprehensive utilization enterprises exist in Henan province, waste epoxy resin powder generated by waste circuit board sorting enterprises in Henan province is transported to other places for disposal or utilization, the cost is high, and the transportation risk is increased.

In order to achieve the above purpose, the invention provides the following technical scheme:

according to the first aspect of the invention, the high-molecular environment-friendly non-steamed resin aerated block brick is prepared from the following raw materials in parts by weight: 550 parts of waste epoxy resin powder 450-.

Further, the aerated block brick is prepared from the following raw materials in parts by weight: 493.5 parts of waste epoxy resin powder, 205 parts of cement, 0.4 part of aluminum powder, 1.1 part of additive and 180 parts of water.

Further, the additive is sodium fatty alcohol-polyoxyethylene ether sulfate.

According to a second aspect of the present invention, the preparation method of the aerated block brick comprises the following steps:

conveying cement into a factory by adopting a tank truck, then conveying the cement into a cement silo for temporary storage through a closed pipeline by pneumatic conveying, then conveying the cement into a proportioning bin by a screw conveyor, and feeding the cement into a stirrer after metering from the proportioning bin; conveying bagged waste epoxy resin powder in a storage warehouse into a raw material silo for temporary storage through a closed pipeline by negative pressure pneumatic conveying, then conveying the powder into a proportioning bin by a screw conveyor, and feeding the powder into a stirrer after metering from the proportioning bin; pouring aluminum powder and an additive into a constant feeder respectively, then inputting the aluminum powder and the additive into a stirrer through a closed pipeline after metering, and enabling water to enter a water metering hopper through a water pipe and enter the stirrer through a pipeline after metering;

the raw materials entering the stirrer are uniformly stirred and mixed, then foamed, sent into a mould for forming, and then sequentially subjected to demoulding, static curing, cutting, airing, packaging and stacking.

The cement solidification is a waste solidification treatment method, and is also a method for harmless and stable treatment of hazardous waste. The cement is an inorganic cementing material, water is added to generate hydration reaction, and particles containing harmful substances are coated on 3 Ca-SiO generated by the hydration reaction of the cement₂The crystals are gradually hardened, so that the aim of reducing leaching of dangerous components in the waste is achieved, even if the solidified body is cracked or crushed and immersed in water, the leaching property of harmful substances can be reduced, the cement solidification method is particularly effective for treating the waste containing high-toxicity heavy metals, the solidification process and equipment are simple, the equipment and operation cost are low, the cement raw materials and additives are cheap and easy to obtain, and the waste with high water content can be directly solidified.

Furthermore, in the cement feeding process, the tank truck is connected with a cement silo by adopting a closed pipeline, a first pulse bag type dust collector is arranged above the cement silo, and particulate matters are generated when the cement in the cement silo falls into the proportioning bin through a screw conveyor and are collected by a gas collecting hood and then treated by the first pulse bag type dust collector; the pipeline of the screw conveyer is closed, and no particulate matter is generated in the cement conveying process.

Furthermore, in the feeding process of the epoxy resin powder, the bagged epoxy resin powder enters the raw material silo in a negative pressure pneumatic conveying mode, the conveying pipeline is closed, a second pulse bag type dust collector is arranged above the raw material silo, the epoxy resin powder in the raw material silo falls into the proportioning bin through a screw conveyor, is sucked under negative pressure and then is treated by the second pulse bag type dust collector, the pipeline of the screw conveyor is closed, and no particulate matter is generated in the conveying process of the epoxy resin powder.

Further, the stirring and mixing time is 120-.

Further, the foaming time is 10 to 20 minutes.

Furthermore, the static curing mode is indoor or stacking without heaven, and the static curing time is two to three days.

The invention has the following advantages:

the high-molecular environment-friendly non-autoclaved resin aerated block brick disclosed by the invention is used for preparing a concrete block by mixing waste epoxy resin powder and cement, is used as a building material, has the advantages of light weight, low heat conductivity, strong impermeability and low water absorption, can effectively reduce the self weight of a building, is used for an outer wall structure, can greatly reduce the energy consumption of heating and refrigeration, and meets the energy-saving requirement of the building. The aerated block brick can meet the limit value requirement of the standard of hazardous waste identification Standard Leaching toxicity identification (GB5085.3-2007), meets the requirement of environmental protection, and can effectively achieve the purpose of comprehensive utilization of hazardous waste epoxy resin powder.

According to the preparation method of the high-molecular environment-friendly non-autoclaved resin aerated block brick, the raw materials are all local raw materials, so that the problems of high cost and increased transportation risk caused by transporting waste epoxy resin powder to an outside place for disposal or utilization are solved, the cement raw materials and the additives are cheap and easy to obtain, the preparation cost of the aerated block brick is low, and the preparation method is suitable for wide production; the process and equipment adopted in the preparation method of the aerated block brick are simple, the equipment and the operation cost are low, the preparation cost can be further reduced, and the comprehensive utilization of the cost of the waste epoxy resin foundation is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.

FIG. 1 is a process flow chart of a preparation method of a high-molecular environment-friendly non-steamed resin aerated block brick provided by the invention 1.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The high-molecular environment-friendly non-steamed resin aerated block brick is prepared from the following raw materials in parts by weight: 493.5 parts of waste epoxy resin powder, 205 parts of cement, 0.4 part of aluminum powder, 1.1 part of additive and 180 parts of water. The additive is fatty alcohol-polyoxyethylene ether sodium sulfate. The waste epoxy resin powder comes from Henan province and periphery, and the dangerous waste types are as follows: HW13, code: 900- & ltSUB & gt 451-13 & gt, annual treatment capacity: 80000 t/a. Cement, aluminum powder and additives are also purchased from Henan province.

The preparation method of the aerated block brick has the process flow as shown in figure 1, and comprises the following steps:

(1) cement feed

The cement silo is arranged, cement is conveyed into a factory by adopting a tank truck, then enters the cement silo for temporary storage through a closed pipeline through pneumatic conveying, is conveyed into a proportioning bin through a screw conveyor, and enters a stirrer after being metered from the proportioning bin.

The tank car is connected with the cement silo by adopting a closed pipeline, no particulate matters are generated in the conveying process, but dust can be generated due to the fall when the dust enters the cement silo, and a first pulse bag type dust collector is arranged above the cement silo. When cement in the cement silo falls into the proportioning bin through the screw conveyor, particulate matters are generated, and are collected by the gas collecting hood and then treated by the first pulse bag type dust collector. The pipeline of the screw conveyer is closed, and no particulate matters are generated in the cement conveying process. The first pulse bag type dust collector is hermetically connected with a breather valve at the top of the cement silo, and all particles discharged by the breather valve enter the first pulse bag type dust collector, are collected by the first pulse bag type dust collector and are then introduced into an exhaust funnel with the diameter of 15m through a fan to be discharged. The dust removal efficiency of the first pulse bag type dust collector is 99.9 percent, and the air volume of the fan is 5000m³Per hour, annual run time 7200 h.

(2) Waste epoxy resin powder feed

The purchased waste epoxy resin powder is bagged by double-layer waterproof and moistureproof snakeskin bags, and dust is not generated when the materials are unloaded from a storage warehouse. The bagged waste epoxy resin powder in the storage warehouse enters a waste epoxy resin powder silo for temporary storage through a closed pipeline through negative pressure pneumatic transmission, then is sent into a proportioning bin through a screw conveyor, and enters a stirrer after being metered from the proportioning bin.

The bagged epoxy resin powder enters the raw material silo in a negative pressure pneumatic conveying mode, a conveying pipeline is closed, no particulate matter is generated in the conveying process, dust can be generated due to the fall when the bagged epoxy resin powder enters the raw material silo, and a second pulse bag type dust collector is arranged above the raw material silo. The epoxy resin powder in the raw material silo generates particles when falling into the proportioning bin through the screw conveyer, and is treated by the second pulse bag type dust collector after negative pressure suction. The pipeline of the screw conveyer is closed, and no particulate matters are generated in the conveying process of the epoxy resin powder. The second pulse bag type dust collector is hermetically connected with a breather valve at the top of the raw material silo, all particles discharged by the breather valve enter the second pulse bag type dust collector, and are introduced into an exhaust funnel with the diameter of 15m through a fan after being collected by the second pulse bag type dust collector and discharged. The dust removal efficiency of the second pulse bag type dust collector is 99.9 percent, and the fanAir volume of 5000m³Per hour, annual run time 7200 h.

(3) Aluminum powder, additive and water feed

The aluminum powder and the additive are poured into a constant feeder respectively, then are input into a stirrer through a closed pipeline after being metered, raw material water enters a water metering hopper through a water pipe, and enters the stirrer through the pipeline after being metered, because the aluminum powder belongs to metal powder, the specific gravity is heavier, and after measures such as fall reduction and the like are taken in the manual adding process, basically no particulate matters are generated. The additive used in the raw materials is fatty alcohol-polyoxyethylene ether sodium sulfate, white or light yellow gel paste, and no particulate matter is generated during addition.

(4) Stirring and foaming

The cement, the epoxy resin slurry, the aluminum powder slurry, the additive and the water are put into a stirrer according to a certain proportion, are uniformly stirred and mixed for 120-160 seconds at the stirring speed of 650-700 r/min, and are foamed for 15 minutes. In the stirring process, due to the fact that alkaline substances such as aluminum powder and silicon dioxide in cement react to release gas, the stirred raw materials are full of micro bubbles, and due to the thickening effect of the additive, the raw materials become thick, and the bubbles contained in the raw materials are not prone to cracking and dissipation, so that the stirred raw materials generate a porous structure, the weight of the building block with the same size is reduced, and the effects of sound insulation, heat preservation, shock resistance, permeability resistance and the like are increased.

When the cement and the epoxy resin powder fall into the stirring machine, particles are generated due to the fall, and are respectively collected under negative pressure and then respectively treated by a first pulse bag type dust collector and a second pulse bag type dust collector.

(5) Pouring into mould

And (4) feeding the stirred and foamed raw materials into a mold for molding.

(6) Demoulding

And removing the die to obtain a semi-finished building block.

(7) Resting

The semi-finished building blocks are statically maintained for pre-curing, the static maintenance mode is indoor or heaven-leakage stacking, the static maintenance time is two to three days, and cement and water are subjected to a curing reaction in the static maintenance process, so that the strength and the hardness of the product are improved.

(8) Cutting of

The air-entrapping block bricks with different sizes are cut into air-entrapping block bricks with different sizes by a cutting machine according to customer requirements, a wet cutting mode is adopted, and the air-entrapping block bricks are washed by cooling water to cool while being cut, so that no particulate waste gas is generated in the cutting process, and the cooling water is recycled.

(9) Air drying

And naturally airing the formed bricks in a finished product area.

(10) Packing and stacking

And packing the finished aerated bricks, and stacking for sale.

The specifications of the prepared aerated block brick are as follows: 60cm is multiplied by 30cm, 60cm is multiplied by 30cm by 20cm, 60cm is multiplied by 30cm by 10cm, and the paint can be used for building exterior walls.

Example 2

The high-molecular environment-friendly non-steamed resin aerated block brick is prepared from the following raw materials in parts by weight: 450 parts of waste epoxy resin powder, 150 parts of cement, 0.2 part of aluminum powder, 0.8 part of additive and 150 parts of water. The additive is fatty alcohol-polyoxyethylene ether sodium sulfate.

The preparation method of the aerated block brick is the same as that of the embodiment 1.

Example 3

The high-molecular environment-friendly non-steamed resin aerated block brick is prepared from the following raw materials in parts by weight: 550 parts of waste epoxy resin powder, 250 parts of cement, 0.6 part of aluminum powder, 1.5 parts of additive and 200 parts of water. The additive is fatty alcohol-polyoxyethylene ether sodium sulfate.

The preparation method of the aerated block brick is the same as that of the embodiment 1.

Example 4

The high-molecular environment-friendly non-steamed resin aerated block brick is prepared from the following raw materials in parts by weight: 475 parts of waste epoxy resin powder, 180 parts of cement, 0.3 part of aluminum powder, 0.95 part of additive and 165 parts of water. The additive is fatty alcohol-polyoxyethylene ether sodium sulfate.

The preparation method of the aerated block brick is the same as that of the embodiment 1.

Example 5

The high-molecular environment-friendly non-steamed resin aerated block brick is prepared from the following raw materials in parts by weight: 430 parts of waste epoxy resin powder, 230 parts of cement, 0.5 part of aluminum powder, 1.25 parts of additive and 190 parts of water. The additive is fatty alcohol-polyoxyethylene ether sodium sulfate.

The preparation method of the aerated block brick is the same as that of the embodiment 1.

Examples of the experiments

1. The aerated block brick of the invention is subjected to quality detection by Henan Hezhengzheng construction engineering quality detection Limited company in 9 and 21 months of 2020, and the detection result is shown in Table 1.

Table 1 summary of aerated block brick quality test results of the invention

As can be seen from Table 1, the strength of the aerated block brick provided by the invention can meet the quality requirement of autoclaved aerated concrete blocks (GB/T11968-2006). Meanwhile, the aerated block brick is a novel building material and has the following advantages: 1. the weight is light, and the dead weight of the building can be effectively reduced; 2. because the resin has low heat-conducting property, the resin is used for an outer wall structure, can greatly reduce the energy consumption of heating and refrigeration, and meets the energy-saving requirement of buildings; 3. strong impermeability and low water absorption.

2. The preparation method of the aerated block brick belongs to a dangerous waste comprehensive utilization project, and in order to determine the safety of the prepared aerated block brick, Henan Moore detection Limited company is entrusted to carry out toxic substance leaching toxicity detection on the prepared aerated block brick, and the result is shown in Table 2.

Table 2 summary of the test results of toxicity of air-entrained bricks

As can be seen from Table 2, the aerated block brick provided by the invention can meet the limit value requirement of the hazardous waste identification standard leaching toxicity identification (GB5085.3-2007) standard in a leaching toxicity experiment.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.