阅读说明：本技术 固化垃圾灰式新型矿粉的制备方法 (Preparation method of novel solidified garbage ash type mineral powder ) 是由 谭纪林 华建军 华玉海 曹敏 牛成 张松 谭伟 徐学成 张会明 于 2020-12-15 设计创作，主要内容包括：本发明的固化垃圾灰式新型矿粉的制备方法,主要是将垃圾焚烧厂排出的垃圾飞灰用固化剂固化成的固化垃圾灰块状体,和生产镍产品厂排出的工业废渣镍渣,通过破碎按一定比例制成混合料,经干燥窑至100-200度反应成活性玻璃体以及C-(12)A-7和C-2S为主要矿物组成材料粉磨成的新型矿粉材料等步骤。能将堆积如山既污染环境又难以处理的固化垃圾灰块状体等其它工业废渣变废为宝,处理成完全可以替代资源短缺且价格不断上涨的矿渣粉使用的固化垃圾灰式新型矿粉产品。生产的新型矿粉产品的各种性能都能达到或超过矿渣粉的质量指标,是一种优质水泥和混凝土掺合料,在水泥和混凝土中最大掺入量可达60％,是一种变废为宝无害化处理的好方法。(The invention relates to a preparation method of solidified garbage ash type novel mineral powder, which is mainly characterized in that solidified garbage ash blocky bodies formed by solidifying garbage fly ash discharged from a garbage incineration plant by using a solidifying agent and industrial waste residue nickel slag discharged from a nickel product production plant are crushed according to a certain proportion to prepare a mixture, and the mixture is reacted into active glass bodies and C through a drying kiln at a temperature of between 100 ℃ and 200 DEG C 12 A 7 And C 2 S is a novel mineral powder material formed by grinding main mineral component materials. Can pollute the accumulated materials like a mountainThe solidified garbage ash blocky body which is difficult to treat in the environment and other industrial waste residues are changed into valuable, and the solidified garbage ash blocky body and other industrial waste residues are treated into a novel solidified garbage ash type mineral powder product which can completely replace mineral powder which is in shortage and has continuously rising price. The produced novel mineral powder product has various properties reaching or exceeding the quality index of the slag powder, is a high-quality cement and concrete admixture, has the maximum doping amount reaching 60 percent in the cement and the concrete, and is a good method for changing waste into valuables and performing harmless treatment.)

1. A preparation method of novel solidified garbage ash type mineral powder is characterized by comprising the following steps:

preparing materials: respectively stacking solidified garbage ash blocky bodies formed by solidifying garbage fly ash discharged from a garbage incineration plant by using a solidifying agent and industrial waste residue nickel slag discharged from a nickel product production plant for later use;

crushing and batching: crushing the solidified garbage ash blocky body into 150-mesh mixed waste residues with the particle materials of 90-95 percent by weight and 5-10 percent by weight of nickel slag accounting for 100 percent by weight, and fully mixing and uniformly dispersing the solidified garbage ash mixed material in a water-containing environment;

drying: sending the mixture of the solidified garbage ash into a drying kiln for drying reaction to reach the temperature of 100 ℃ and 200 ℃, wherein the water content of the mixture is 1.0 percent of active glass bodies and C₁₂A₇And C₂S is a novel mineral powder material consisting of main minerals;

grinding: mixing the dried active glass body with C₁₂A₇And C₂Novel ore with S as main mineralThe powder material is ground into powder with the specific surface area of more than 400m²The powder of/kg is solid garbage ash type novel mineral powder.

Technical Field

The invention relates to a method for producing novel mineral powder by taking solidified garbage ash, nickel slag and other industrial waste residues as raw materials, and the novel mineral powder produced by the method can directly replace slag powder for use, and belongs to the field of environmental protection or new materials.

Background

The solidified garbage ash and nickel slag are solid garbage ash blocks which are solidified by a curing agent from garbage fly ash discharged from a garbage incineration plant, are called solidified garbage ash and contain about 20 percent of water, CaO and Al₂O₃And CaCl and other chemical components, because the solidified garbage ash contains a certain amount of CaCl, the solidified garbage ash cannot be directly used for producing building material products, and at present, enterprises can only stack the solidified garbage ash at a large cost in farmlands and underground landfills to cause serious environmental pollution. At present, slag powder is waste slag (called slag) discharged after steel enterprises produce steel, and is processed into slag powder, and the steel enterprises are high-energy-consumption and high-pollution enterprises, are one of the current national restrictions and shut-down objects, and are also forbidden to produce and shut-down by many small-sized steel enterprises at present. Therefore, the shortage of slag resources is caused at present, the prices of slag and slag powder are increased continuously, a plurality of slag powder enterprises utilizing slag production face no-supply and no-profit or production stop transition, and meanwhile, the method is beneficial to cement enterprises and concrete enterprisesThe use of slag fines increases cement and concrete costs.

Disclosure of Invention

The invention aims to solve the problems of waste, environmental pollution and the like caused by stacking and burying of the solidified garbage ash, and provides a preparation method of solidified garbage ash type novel mineral powder by preparing industrial waste residues such as the solidified garbage ash and the like into the mineral powder capable of replacing slag powder.

The basic principle adopted by the invention is as follows: the material with gelling property is broken into fine particles, after hydration reaction, the solid material after hydration reaction is dehydrated by drying and is ground into powder, the solid material can still be hydrated, and the hydrated product still has gelling property. After the waste slag nickel slag is added into the solidified waste ash and mixed, a series of complex changes are produced among all particles through hydration reaction, the continuous changes of the changes produce various hydrated minerals, and the hydrated mineral-containing material is dehydrated, dried and ground to obtain active glass bodies similar to slag powder and C₁₂A₇And C₂S is a novel solidified garbage ash type mineral powder material consisting of main minerals.

The preparation method of the novel solidified garbage ash type mineral powder comprises the following steps:

preparing materials: respectively stacking solidified garbage ash blocky bodies solidified from garbage fly ash discharged from a garbage incineration plant by using a curing agent and industrial waste residue nickel slag discharged from a nickel product production plant for later use;

crushing and batching: crushing the solidified garbage ash blocky body into 150-mesh granular materials by a crusher, wherein the granular materials comprise 90-95% of mixed waste residues according to the weight percentage, and the sum of the proportion of 5-10% of nickel residues is 100%; fully mixing and uniformly dispersing the solidified garbage ash mixture in a water-containing environment;

drying: sending the waste residue solidified garbage ash mixture into a drying kiln for drying reaction to 100-200 ℃, wherein the water content of the activated glass body is 1.0 percent and C₁₂A₇And C₂S is a novel mineral powder material consisting of main minerals;

grinding: mixing the dried active glass body with C₁₂A₇And C₂Grinding the novel mineral powder material with S as the main mineral into powder with the specific surface area of more than 400m²The powder of/kg is novel solidified garbage ash type mineral powder.

The method for preparing the novel solidified garbage ash type mineral powder can change industrial waste residues such as solidified garbage ash blocky bodies which are piled up like a mountain and pollute the environment and are difficult to treat into valuable, and the novel solidified garbage ash type mineral powder which can completely replace mineral powder with shortage and continuously rising price can be treated. The produced novel mineral powder product has various properties reaching or exceeding the quality standard of the slag powder, is a high-quality cement and concrete admixture, has the maximum doping amount reaching 60 percent in the cement and the concrete, is a good method for changing waste into valuables to carry out harmless and quantitative treatment on industrial slag, and also has the advantages of advanced and reasonable process, investment saving, low cost, high benefit, no pollution and no waste slag discharge in the production process and the like.

Detailed Description

Example 1:

the preparation method of the novel solidified garbage ash type mineral powder comprises the following steps:

(1) preparing materials: respectively stacking solidified garbage ash blocky bodies formed by solidifying garbage fly ash discharged from a garbage incineration plant by using a solidifying agent and industrial waste residue nickel slag discharged from a nickel product production plant for later use;

(2) crushing and batching: crushing the solidified garbage ash blocky body into mixed waste residues with 150-mesh particle materials, wherein the sum of the weight percentage of 95% of the mixed waste residues and the weight percentage of 5% of nickel residues is 100%, and fully mixing and uniformly dispersing the solidified garbage ash mixed material in a water-containing environment;

(3) and (3) drying: sending the mixture of the solidified garbage ash into a drying kiln for drying reaction to 200 ℃, wherein the water content of the mixture is 0.3 percent of active glass bodies and C₁₂A₇And C₂S is a novel mineral aggregate material consisting of main minerals;

(4) and grinding: mixing the dried active glass body with C₁₂A₇And C₂Grinding the novel mineral powder material with S as the main mineral into powder with the specific surface area of 415m²The powder is solidified garbage ashThe formula of the novel mineral powder.

Example 2

The preparation method of the novel solidified garbage ash type mineral powder comprises the following steps:

(1) preparing materials: respectively stacking solidified garbage ash blocky bodies formed by solidifying garbage fly ash discharged from a garbage incineration plant by using a solidifying agent and industrial waste residue nickel slag discharged from a nickel product production plant for later use;

(2) crushing and batching: crushing the solidified garbage ash blocky body into 150-mesh granular materials through a crusher to produce mixed waste residues, wherein the mixed waste residues comprise 90% of the granular materials by weight percent and 10% of nickel residues by weight percent, and the sum of the mixed waste residues and the nickel residues is 100%, and fully mixing and uniformly dispersing the mixed waste ash mixture in a water-containing environment.

(3) And (3) drying: sending the mixture of the solidified garbage ash into a drying kiln for drying reaction to 100 ℃, and adding active glass with the water content of 0.4 percent and C₁₂A₇And C₂S is a novel mineral powder material consisting of main minerals;

(4) and grinding: mixing the dried active glass body with C₁₂A₇And C₂Grinding the novel mineral powder material with S as the main sand component into powder with the specific surface area of 421m²The powder of/kg is novel solidified garbage ash type mineral powder.

Example 3

After the quality tests of the embodiment 1 and the embodiment 2, various performances of the novel solidified garbage ash type mineral powder product prepared by the method of the invention can reach or exceed the quality indexes specified by the state for the slag powder, and the test results are shown in table 1: the mineral powder can completely replace slag powder with resource shortage and continuously rising price, is a high-quality cement and concrete admixture, the maximum doping amount in the cement and the concrete can reach 60%, and a table 2 shows the comparison and detection result of the physical properties of the novel mineral powder product and the replaced part of cement. And table 3 is a table comparing the performance test results and the cost of the novel mineral powder product blended into concrete.

Table 1:

table 2:

table 3:

as can be seen from the data in tables 1-3, the performance of the novel mineral powder product prepared by the method can be compared favorably with that of the slag powder, and the product of the invention can replace part of portland cement, common cement, fly ash cement, road cement and composite cement, and the performance of the product is far better than that of the slag powder cement. Therefore, the product is added into various cements to play a role in complementing advantages and changing the defects of the cement, fully exerts the functions of the components in hydration, promotes the novel mineral powder and calcium ions of cement clinker and silicate ions or particle groups to combine into hydrated calcium silicate, hydrates C-S-H in an adequate calcium ion environment, can fill the gaps of the cement, can bond particles, and can inhibit the formation of the hydroxycalcites, thereby preventing the strength of the cement from being reduced due to the crystal lattice transformation of the hydroxycalcites. Therefore, when the novel mineral powder is added into various cements, the performance of the cement is superior to that of the cement with slag powder for a long time.

The novel mineral powder prepared by the method is a high-quality cement and concrete admixture, the maximum doping amount in the cement and the concrete can reach 60 percent, the cement and concrete performance can be improved, the strength is high, the slump is large, the dry shrinkage rate is low, the wear resistance is strong, the freezing resistance is good, and the novel mineral powder admixture has the characteristics of certain compensation shrinkage function, high elastic modulus and the like, the cement concrete is widely applied to industrial and civil building engineering, large-volume concrete construction, urban roads, bridges, chemical corrosion prevention engineering and the like, compared with blank and slag powder concrete, the concrete admixture doped with the novel mineral powder has the advantages of better concrete flowing workability, larger slump and better fluidity, is beneficial to pump concrete construction, the setting time is prolonged, the slump loss is small, the cohesiveness of the admixture is enhanced, the layering segregation is not easy, the defect that the fly ash admixture is added into the concrete strength grade to be over-bonded can be improved, the pumpability is good, the bleeding property of the concrete is reduced, the early hydration heat of the concrete is reduced, and the concrete is favorable for reducing the settlement and cracking of the concrete.

The present invention should not be considered limited to the particular examples described above, but rather should be understood to cover all aspects of the invention, as various modifications, equivalent methods, as well as numerous structures and devices suitable for use with the invention will be apparent to those skilled in the art.