阅读说明：本技术 制砖方法及灰渣砖 (Brick making method and ash brick ) 是由 冷富荣 孙亭亭 谢兴旺 杨宏伟 胡利华 于 2021-08-25 设计创作，主要内容包括：本发明提供一种制砖方法及灰渣砖,制砖方法包括以下步骤：S1：对生物质电厂产生的第一炉渣与垃圾电厂产生的第二炉渣进行预处理,其中所述第二炉渣形成垃圾渣石粉；S2：将所述第一炉渣、所述垃圾渣石粉与水泥混合搅拌形成混合料；S3：对所述混合料加水搅拌；及S4：将所述混合料通过液压压制成型形成灰渣砖。所述制砖方法实现了固体废弃物进行资源化利用。(The invention provides a brick making method and a clinker brick, wherein the brick making method comprises the following steps: s1: pretreating first slag produced by a biomass power plant and second slag produced by a garbage power plant, wherein the second slag forms garbage slag powder; s2: mixing and stirring the first slag, the garbage slag stone powder and cement to form a mixture; s3: adding water into the mixture and stirring; and S4: and carrying out hydraulic pressing molding on the mixture to form the ash brick. The brick making method realizes resource utilization of solid wastes.)

1. A method of making a brick, comprising the steps of:

s1: pretreating first slag produced by a biomass power plant and second slag produced by a garbage power plant, wherein the second slag forms garbage slag powder;

s2: mixing and stirring the first slag, the garbage slag stone powder and cement to form a mixture;

s3: adding water into the mixture and stirring; and

s4: and carrying out hydraulic pressing molding on the mixture to form the ash brick.

2. The brick making method according to claim 1, wherein the mass contents of the components of the mixture are 13% -15% of cement, 20% -22% of first slag and 67% -63% of garbage slag stone powder, and the mass ratio of the mixture to water is 98-99: 2-1.

3. The brick making method according to claim 1, wherein the mixture further comprises biomass ash, the mass content of each component of the mixture is 13% -15% of cement, 17% -19% of first furnace slag, 5% -7% of biomass ash and 65% -59% of garbage slag stone powder, and the mass ratio of the mixture to water is 98-99: 2-1.

4. The method for making a brick of claim 1, wherein in S1, comprising:

primarily screening and sorting the first slag and the second slag;

carrying out magnetic separation on the first slag and the second slag, and recovering metals in the first slag and the second slag;

crushing the first slag and the second slag;

screening the first slag and the second slag to obtain available slag within the range of 0.5-10 mm;

cleaning the first slag and the second slag; and

and further crushing and grinding the second slag to prepare the garbage slag powder.

5. The method of making brick of claim 4, wherein the cleaning the first slag and the second slag comprises:

placing the first slag and the second slag into a first-level sand pool to perform first-level cleaning for 20-30 min;

placing the first slag and the second slag into a secondary sand pool for secondary cleaning for 10-15 min;

pressing the sewage in the first-stage sand pond and the second-stage sand pond into sludge by using a sludge press, and introducing water into the first-stage sand pond and the second-stage sand pond to be used as circulating water for recycling; and

and drying the cleaned first slag and second slag under natural conditions.

6. The method for making brick of claim 1 wherein in S3, the mixture is added to a blender and blended for 3-5min, followed by water and blended for 3-5 min.

7. The method for making a brick of claim 1 further comprising, after S4, the steps of:

and curing the obtained formed clinker brick by spraying water every other day within 7 days, and naturally curing for 28 days after 7 days.

8. The clinker brick prepared by the brick making method according to any one of claims 1 to 7, wherein the clinker brick comprises first clinker produced by a biomass power plant, waste clinker powder obtained by processing second clinker produced by a waste power plant and cement.

9. The clinker brick of claim 8, wherein the clinker brick comprises 13-15% of cement, 20-22% of biomass slag and 67-63% of garbage slag powder by mass.

10. The clinker brick of claim 8, further comprising biomass ash, wherein the clinker brick comprises 13-15% of cement, 17-19% of biomass slag, 5-7% of biomass ash and 65-59% of garbage slag powder by mass.

Technical Field

The invention relates to the field of brick making, in particular to a brick making method and a clinker brick.

Background

China is a big agricultural country, generates a large amount of agricultural and forestry wastes every year, causes great environmental pollution by direct incineration, and causes huge energy waste. In order to save energy and reduce environmental pollution, a large number of biomass power plants are established in various places of China. Biomass energy in China is rich, biomass power generation has a wide development prospect, biomass burning power generation is utilized, biomass energy is effectively and comprehensively utilized, and simultaneously, generated flue gas is treated by a flue gas treatment system and is discharged after reaching the standard, so that environmental pollution is reduced. But at the same time, a biomass power plant generates a large amount of slag and fly ash, and the common treatment mode of the fly ash and the fly ash is to directly bury the fly ash and scatter the fly ash into farmland as fertilizer or extract useful chemical components such as Si02 from the ash.

At present, household garbage incineration is the mainstream mode of garbage treatment, and slag generated by garbage incineration mainly comprises ceramic and masonry fragments, stones, glass, molten slag, iron, other waste metals and unburnt combustible substances. The burning rate of the garbage is below 5%, but the quantity of generated slag is still large. The slag generated by the waste incineration has large production amount and high resource potential, and the comprehensive utilization of the incineration slag is very important along with the improvement of the construction and management level of domestic waste incineration power plants in China.

In the prior art, slag directly landfills occupy a large amount of land, pollute groundwater, are unfavorable for environmental protection. The fertilizer may have insufficient fertilizer efficiency and the like. In the transportation process of the biomass fly ash, the density of the biomass fly ash is low, so that secondary dust pollution is easily caused. To extract SiO from the biomass ash₂The method of chemical components and the like has higher cost and small treatment amount. In conclusion, the utilization rate of the ash of the biomass power plant is not high, and how to effectively treat a large amount of biomass ash is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the invention provides a brick making method and a clinker brick, which at least solve the problem of difficult clinker treatment in the related technology.

According to one embodiment of the invention, there is provided a method of making a brick comprising the steps of:

s1: pretreating first slag produced by a biomass power plant and second slag produced by a garbage power plant, wherein the second slag forms garbage slag powder;

s2: mixing and stirring the first slag, the garbage slag stone powder and cement to form a mixture;

s3: adding water into the mixture and stirring; and

s4: and carrying out hydraulic pressing molding on the mixture to form the ash brick.

Further, the mass content of each component of the mixture is 13-15% of cement, 20-22% of first furnace slag and 67-63% of garbage slag stone powder, and the mass ratio of the mixture to water is 98-99: 2-1.

Further, the mixture also comprises biomass ash, the mass content of each component of the mixture is 13-15% of cement, 17-19% of first furnace slag, 5-7% of biomass ash and 65-59% of garbage slag stone powder, and the mass ratio of the mixture to water is 98-99: 2-1.

Further, in S1, the method includes:

primarily screening and sorting the first slag and the second slag;

carrying out magnetic separation on the first slag and the second slag, and recovering metals in the first slag and the second slag;

crushing the first slag and the second slag;

screening the first slag and the second slag to obtain available slag within the range of 0.5-10 mm;

cleaning the first slag and the second slag; and

and further crushing and grinding the second slag to prepare the garbage slag powder.

Further, the cleaning the first slag and the second slag includes:

placing the first slag and the second slag into a first-level sand pool to perform first-level cleaning for 20-30 min;

placing the first slag and the second slag into a secondary sand pool for secondary cleaning for 10-15 min;

pressing the sewage in the first-stage sand pond and the second-stage sand pond into sludge by using a sludge press, and introducing water into the first-stage sand pond and the second-stage sand pond to be used as circulating water for recycling; and

and drying the cleaned first slag and second slag under natural conditions.

Further, in S3, the mixture is added into a stirrer to be stirred for 3-5min, and then water is added to be stirred for 3-5 min.

Further, after S4, the method further includes the steps of:

and curing the obtained formed clinker brick by spraying water every other day within 7 days, and naturally curing for 28 days after 7 days.

According to another embodiment of the invention, the ash brick prepared by the brick making method comprises first slag produced by a biomass power plant, garbage slag powder obtained by processing second slag produced by a garbage power plant and cement.

Further, the ash brick comprises, by mass, 13% -15% of cement, 20% -22% of biomass slag and 67% -63% of garbage slag stone powder.

The ash brick further comprises biomass ash, and the mass percentage of each component of the ash brick is 13% -15% of cement, 17% -19% of biomass slag, 5% -7% of biomass ash and 65% -59% of garbage slag stone powder.

Has the advantages that: compared with the prior art, the brick making method provided by the invention is a method for preparing the baking-free brick by taking the biomass power plant ash and the garbage power plant slag as raw materials, adding cement, water and the like according to a certain proportion, so that the high-strength baking-free brick is prepared, the strength of the brick is improved, the synergistic resource utilization of the biomass power plant ash and the garbage power plant slag is realized, and the ash treatment problem is relieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a flow chart of a method for making a brick according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Referring to fig. 1, an embodiment of the present invention provides a brick making method, including the following steps:

s1: the method comprises the steps of pretreating first slag produced by a biomass power plant and second slag produced by a waste power plant, wherein the second slag forms waste slag powder.

The biomass power plant slag refers to solid residues formed by burning biomass fuel on a grate and is discharged from the bottom of a furnace, and is called as biomass power plant slag.

The garbage power plant slag refers to solid residues formed by burning household garbage on a grate and is discharged from the bottom of a furnace, and the garbage power plant slag is called garbage power plant slag.

In at least one embodiment, the pre-processing comprises: primarily screening and sorting the first slag and the second slag;

carrying out magnetic separation on the first slag and the second slag, and recovering metals in the first slag and the second slag;

crushing the first slag and the second slag;

screening the first slag and the second slag to obtain available slag within the range of 0.5-10 mm;

cleaning the first slag and the second slag; and

and further crushing and grinding the second slag to prepare the garbage slag powder.

In at least one embodiment, the cleaning the first slag and the second slag comprises:

placing the first slag and the second slag into a first-level sand pool to perform first-level cleaning for 20-30 min;

placing the first slag and the second slag into a secondary sand pool for secondary cleaning for 10-15 min;

pressing the sewage in the first-stage sand pond and the second-stage sand pond into sludge by using a sludge press, and introducing water into the first-stage sand pond and the second-stage sand pond to be used as circulating water for recycling; and

and drying the cleaned first slag and second slag under natural conditions.

S2: and mixing and stirring the first slag, the garbage slag stone powder and cement to form a mixture.

S3: and adding water into the mixture and stirring.

In at least one embodiment, the mass content of each component of the mixture is 13-15% of cement, 20-22% of first furnace slag and 67-63% of garbage slag stone powder, and the mass ratio of the mixture to water is 98-99: 2-1.

In at least one embodiment, the mixture further comprises biomass ash, the mass content of each component of the mixture is 13% -15% of cement, 17% -19% of first furnace slag, 5% -7% of biomass ash and 65% -59% of garbage slag stone powder, and the mass ratio of the mixture to water is 98-99: 2-1.

In at least one embodiment, the mixture is added to a blender and stirred for 3-5min, then water is added and stirred for 3-5 min.

The biomass ash refers to residue collected in a flue gas purification system and a heat recovery and utilization system of a biomass power plant.

S4: and carrying out hydraulic pressing molding on the mixture to form the ash brick.

In at least one embodiment, after S4, the method further includes the steps of:

and curing the obtained formed clinker brick by spraying water every other day within 7 days, and naturally curing for 28 days after 7 days.

The invention also provides a clinker brick prepared by the brick making method. The ash brick comprises first slag generated by a biomass power plant, garbage slag powder obtained by processing second slag generated by a garbage power plant and cement.

In at least one embodiment, the ash brick comprises, by mass, 13% -15% of cement, 20% -22% of biomass slag and 67% -63% of garbage slag stone powder. The average compressive strength of the bricks prepared by the proportion reaches about 23MPa, meets the MU20 standard, and can be used for paving pedestrian roads, road shoulders, flower beds and the like

In at least one embodiment, the ash brick further comprises biomass ash, and the ash brick comprises, by mass, 13% -15% of cement, 17% -19% of biomass slag, 5% -7% of biomass ash, and 65% -59% of garbage slag stone powder. The average compressive strength of the bricks prepared by the proportion reaches about 25MPa, meets the MU20 standard, and can be used for paving pedestrian roads, road shoulders, flower beds and the like.

The brick making method utilizes the biomass ash and the garbage slag as raw materials, realizes the cooperative resource utilization of wastes, and achieves the aim of comprehensive utilization. The preparation process does not cause pollution to the environment, and the preparation method is environment-friendly and has low cost. The sintering-free process is adopted, so that the energy is saved, the pollution is avoided, and the manufacturing period is short. The metals are recycled through pretreatment, and the recycling of resources is realized. The sludge for cleaning the slag is mixed and then is used for making bricks together, thus not polluting the environment. The biomass ash slag brick prepared from the proportioned raw materials has good strength and can be used for municipal engineering, paving pedestrian roads, road shoulders, flower beds and the like.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.