阅读说明：本技术 烧结灰及其制备方法 (Sintering ash and preparation method thereof ) 是由 魏建荣 付义 于 2019-11-20 设计创作，主要内容包括：本发明公开了一种烧结灰,包括固体废渣和粉灰,所述固体废渣包括除尘灰和结圈灰；所述除尘灰、所述粉灰和所述结圈灰的组分占比分别为：1:3。其中,所述除尘灰的含钙量为60-62％,所述粉灰的含钙量为85-88％,所述结圈灰的含钙量为80-83％。制备方法为：固体废渣的回收-按比例混合。本发明采用上述结构的烧结灰及其制备方法,将生产尾料进行二次加工,废物利用,减少废物排放,既保护环境又提高利润,实现了资源精细利用、污染物集中处理再利用的循环经济发展模式。(The invention discloses sintering ash, which comprises solid waste residue and fly ash, wherein the solid waste residue comprises dedusting ash and ring-forming ash; the dust removal ash, the powder ash and the ring formation ash respectively have the following components in percentage by weight: 1:3. Wherein the calcium content of the dedusting ash is 60-62%, the calcium content of the fly ash is 85-88%, and the calcium content of the ring-forming ash is 80-83%. The preparation method comprises the following steps: and (3) recovering the solid waste residue, and mixing the solid waste residue and the solid waste residue according to a proportion. By adopting the sintering ash with the structure and the preparation method thereof, the production tailings are subjected to secondary processing, the wastes are utilized, the waste discharge is reduced, the environment is protected, the profit is improved, and the circular economy development mode of fine resource utilization and centralized pollutant treatment and reutilization is realized.)

1. A sintering ash characterized by: the method comprises solid waste residues and fly ash, wherein the solid waste residues comprise fly ash and ring-forming ash;

the dust removal ash, the powder ash and the ring formation ash respectively have the following components in percentage by weight: 1:3:1.

2. The sintering ash of claim 1, wherein: the calcium content of the dedusting ash is 60-62%, the calcium content of the fly ash is 85-88%, and the calcium content of the ring-forming ash is 80-83%.

3. The sintering ash of claim 1, wherein: the calcium content of the dedusting ash is 61%, the calcium content of the fly ash is 87%, and the calcium content of the ring-forming ash is 82%.

4. A method for preparing a sintering ash based on any of the above claims 1-3, characterized in that: the method comprises the following steps:

s1 recovery of solid waste residue

S1a, recycling the ring-forming ash;

s1b, recovering dust;

s2, collecting and processing the powder ash;

s3, conveying the processed finished ring-forming ash, finished fly ash and recovered fly ash into a ring-forming ash transfer bin, a fly ash transfer bin and a fly ash transfer bin respectively through a pneumatic conveying device;

s4, taking out the fly ash, the fly ash and the ring-forming ash from the fly ash transfer bin, the ring-forming ash transfer bin and the fly ash transfer bin respectively according to the ratio of 1:3:1 by using a belt weighing machine, and mixing to form sintering ash;

and S5, conveying the sintering ash to a sintering ash finished product bin.

5. A method for producing a sintered ash based on the above claim 4, characterized in that: the recycling treatment of the ring-forming ash in the step S1a specifically comprises the following steps:

s1a1, collecting the ring-forming ash, conveying the collected ring-forming ash to a jaw crusher through a conveying device for coarse crushing to obtain a semi-finished ring-forming ash;

s1a2, conveying the semi-finished ring-forming ash to a jaw crusher for crushing again to obtain the finished ring-forming ash.

6. A method for producing a sintered ash based on the above claim 5, characterized in that: the diameter range of the semi-finished product ring-forming ash is 3-10 mm, and the diameter range of the finished product ring-forming ash is 0-3 mm.

7. A method for producing a sintered ash based on the above claim 4, characterized in that: the collection processing of the fly ash in the step S2 specifically includes the following steps: and crushing the collected fly ash into powdery finished fly ash by a crusher.

Technical Field

The invention relates to a technology for processing sintering ash by using solid waste residues, in particular to sintering ash and a preparation method thereof.

Background

In the process of producing the calcium oxide lime powder, ring-forming ash and dedusting ash are inevitably generated to form solid slag fertilizer, so that field materials are accumulated, and the solid waste slag is discharged to cause burden to the environment.

The cause of the ring-forming ash is as follows: as the temperature of the material in the rotary kiln reaches 1250 ℃, the liquid phase appears, the viscosity of the liquid phase is reduced and the amount of the liquid phase is increased along with the increase of the temperature, the temperature of the kiln lining exposed in hot air flow is always higher than the temperature of the material in the kiln, when the material is covered by the material layer, the temperature is suddenly reduced and the heat dissipation loss of the surface of the kiln body is added, the liquid phase is solidified on the kiln lining to form new kiln skin, the rotary kiln continues to operate, and when the material is covered again, the liquid phase is solidified again in cycles, the kiln skin is gradually thickened to form ring-forming ash.

The reason for the formation of fly ash: the fly ash is mostly generated by high-temperature flue gas of a sintering machine head, a blast furnace and a converter gas system, and is treated by dust removing equipment such as a bag-type dust remover, most of particulate waste gas is collected to obtain fly ash, the components of the fly ash are related to the collected particulate gas, and the fly ash is a product of high-temperature physicochemical reaction and is formed in high temperature, so the physicochemical properties of the fly ash are changed, the utilization difficulty is high, and the production hazard is large.

Disclosure of Invention

The invention aims to provide sintering ash and a preparation method thereof, which carry out secondary processing on production tailings, utilize wastes, reduce waste discharge, protect the environment, improve the profit and realize a circular economy development mode of fine resource utilization and centralized pollutant treatment and reutilization.

In order to achieve the purpose, the invention provides sintering ash which comprises solid waste and fly ash, wherein the solid waste comprises dust removal ash and ring formation ash;

the dust removal ash, the powder ash and the ring formation ash respectively have the following components in percentage by weight: 1:3:1.

Preferably, the calcium content of the dedusting ash is 60-62%, the calcium content of the fly ash is 85-88%, and the calcium content of the ring-forming ash is 80-83%.

Preferably, the fly ash contains 61% of calcium, the fly ash contains 87% of calcium, and the ring-forming ash contains 82% of calcium.

The preparation method of the sintering ash comprises the following steps:

s1 recovery of solid waste residue

S1a, recycling the ring-forming ash;

s1b, recovering dust;

s2, collecting and processing the powder ash;

s3, conveying the processed finished ring-forming ash, finished fly ash and recovered fly ash into a ring-forming ash transfer bin, a fly ash transfer bin and a fly ash transfer bin respectively through a pneumatic conveying device;

s4, taking out the fly ash, the fly ash and the ring-forming ash from the fly ash transfer bin, the ring-forming ash transfer bin and the fly ash transfer bin respectively according to the ratio of 1:3:1 by using a belt weighing machine, and mixing to form sintering ash;

and S5, conveying the sintering ash to a sintering ash finished product bin.

Preferably, the recycling treatment of the ring-formed ash in the step S1a specifically includes the following steps:

s1a1, collecting the ring-forming ash, conveying the collected ring-forming ash to a jaw crusher through a conveying device for coarse crushing to obtain a semi-finished ring-forming ash;

s1a2, conveying the semi-finished ring-forming ash to a jaw crusher for crushing again to obtain the finished ring-forming ash.

Preferably, the diameter range of the semi-finished product ring-forming ash is 3-10 mm, and the diameter range of the finished product ring-forming ash is 0-3 mm.

Preferably, the collecting process of the fly ash in the step S2 specifically includes the following steps: and crushing the collected fly ash into powdery finished fly ash by a crusher.

Therefore, the sintering ash with the structure and the preparation method thereof are adopted, the production tailings are subjected to secondary processing, the waste is utilized, the waste discharge is reduced, the environment is protected, the profit is improved, and the circular economy development mode of fine resource utilization and centralized pollutant treatment and reutilization is realized.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a flow chart of the preparation of a sintering ash and a method for preparing the same according to an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.

FIG. 1 is a flow chart illustrating the preparation of a sintering ash and a method for preparing the same according to an embodiment of the present invention, and as shown in FIG. 1, the structure of the present invention includes a solid waste slag including a fly ash and a ring-forming ash;

the dust removal ash, the powder ash and the ring formation ash respectively have the following components in percentage by weight: 1:3:1.

Preferably, the calcium content of the dedusting ash is 60-62%, the calcium content of the fly ash is 85-88%, and the calcium content of the ring-forming ash is 80-83%. Furthermore, the calcium content of the dedusting ash is 61%, the calcium content of the powder ash is 87%, and the calcium content of the ring-forming ash is 82%. The contents of the above components can be adjusted according to the calcium content of each raw material.

The sintering ash can be formed by mixing the dedusting ash, the dust ash and the ring-forming ash according to a certain proportion according to the calcium content, and 9 bag-type dust collectors are arranged in the prepared plant, so that the clean production is ensured, and the zero emission of the dust ash is realized.

The preparation method of the sintering ash comprises the following steps:

s1 recovery of solid waste residue

S1a, recycling the ring-forming ash;

the recycling treatment of the ring-forming ash in the step S1a specifically comprises the following steps:

s1a1, collecting the ring-forming ash, conveying the collected ring-forming ash to a jaw crusher through a conveying device for coarse crushing to obtain a semi-finished ring-forming ash;

s1a2, conveying the semi-finished ring-forming ash to a jaw crusher for crushing again to obtain the finished ring-forming ash.

The diameter range of the semi-finished product ring-forming ash is 3-10 mm, and the diameter range of the finished product ring-forming ash is 0-3 mm.

S1b, recovering dust;

s2, collecting and processing the powder ash;

the collection processing of the fly ash in the step S2 specifically includes the following steps: and crushing the collected fly ash into powdery finished fly ash by a crusher.

S3, conveying the processed finished ring-forming ash, finished fly ash and recovered fly ash into a ring-forming ash transfer bin, a fly ash transfer bin and a fly ash transfer bin respectively through a pneumatic conveying device;

s4, taking out the fly ash, the fly ash and the ring-forming ash from the fly ash transfer bin, the ring-forming ash transfer bin and the fly ash transfer bin respectively according to the ratio of 1:3:1 by using a belt weighing machine, and mixing to form sintering ash;

and S5, conveying the sintering ash to a sintering ash finished product bin.

Therefore, the sintering ash with the structure and the preparation method thereof are adopted, the production tailings are subjected to secondary processing, the waste is utilized, the waste discharge is reduced, the environment is protected, the profit is improved, and the circular economy development mode of fine resource utilization and centralized pollutant treatment and reutilization is realized.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.