Waste refractory material solid waste recycling process

Abstract

The invention discloses a waste refractory material solid waste recycling process. The process comprises the following steps: A) recycling and classifying; step B) cleaning impurities; step C) crushing processing; d) screening to remove iron; step E) homogenization treatment; step F) deep processing, including the following steps; the method comprises the following steps: 1) recycling waste refractory materials in the step A), and classifying the recycled waste refractory materials according to materials, components, pollution degrees and the like; (2) dust, soil, slag and other impurities are often adhered to the surfaces of the waste refractory materials classified in the step (2) and need to be removed in a water washing mode and the like; and 3) feeding the cleaned waste refractory material in the step C) into a crusher for crushing treatment, and collecting after crushing. The function of improving the treatment quality through multiple treatment modes is added, so that the device has the effect of deeply treating the waste refractory materials to improve the treatment quality, and the situation that the treatment quality is not stable enough easily during solid waste recycling treatment is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of solid waste recycling, and in particular to a solid waste recycling process of waste refractory materials. Background Art

[0002] Waste refractory materials refer to used or damaged refractory materials, mainly from the scrapping or damage of refractory materials used in boiler, metallurgy, chemical industry and other industries. These materials have high resistance to high temperature and corrosion, so they have the value of reuse and recycling, which helps to save resources and reduce environmental pollution. The following is a detailed analysis of waste refractory materials: Waste refractory materials can be classified according to different standards: Classification by composition: waste refractory materials containing graphite, waste refractory materials containing silicon dioxide, waste refractory materials containing aluminum oxide, waste refractory materials containing carbon binders, etc., classification by shape and size: gravel-like waste refractory materials, block-like waste refractory materials, powdered waste refractory materials, etc., classification by use environment and service life: waste refractory materials in high temperature areas, waste refractory materials in medium temperature areas, waste refractory materials in low temperature areas, etc.

[0003] The accumulation of waste refractory materials will have an impact on the environment and requires solid waste recycling. However, the existing solid waste recycling processes on the market are usually relatively simple, which leads to unstable treatment quality during solid waste recycling, secondary cleaning and indirect cleaning, which does not bring convenience to operators.

[0004] Therefore, it is necessary to design and transform the solid waste recycling treatment process to effectively prevent the phenomenon of unstable treatment quality during solid waste recycling treatment. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the purpose of the present invention is to provide a solid waste recycling process for waste refractory materials, which has the advantage of increasing the processing quality by performing multiple processing methods, and solves the problem of unstable processing quality that is easy to occur during solid waste recycling.

[0006] To achieve the above object, the present invention provides the following technical solutions: step A) recycling and classification; step B) cleaning impurities; step C) crushing and processing; step D) screening and iron removal; step E) homogenization; step F) deep processing.

[0007] As the preferred embodiment of the present invention, the following steps are included: 1) Step A) The waste refractory materials need to be recycled first, and the recycled waste refractory materials should be classified according to material, composition, pollution degree, etc.; 2) Step B) The surface of the classified waste refractory materials is often adhered with impurities such as dust, soil, slag, etc., which need to be removed by water washing or other methods; 3) Step C) sending the cleaned waste refractory materials into a crusher for crushing and collecting them after crushing; 4) Step D) The crushed particles need to be screened to obtain particles of different sizes, and magnetic separation and other methods are used to remove metallic iron from the particles to prevent affecting the performance of the recycled product; 5) Step E) homogenizing the crushed and screened particles to ensure the quality stability of the regenerated product; 6) Step F) Depending on the requirements of the recycled products, the particles are further processed, such as grinding, burning, impregnation, etc., to improve the intrinsic quality and added value of the raw materials.

[0008] As a preferred embodiment of the present invention, the water washing equipment in step B) is a cleaning machine, the cleaning water volume of the cleaning machine is 3-6 liters / minute, and the cleaning time is 1-3 minutes.

[0009] As a preferred embodiment of the present invention, in the step C), the crusher is divided into a cone crusher and a ball mill, the crushing speed of the cone crusher is 200-600 rpm, the crushing time is 2-5 minutes, and the crushing speed of the ball mill is 50-400 rpm, and the crushing time is 5-8 minutes.

[0010] As a preferred embodiment of the present invention, the screening and iron removal equipment in step D) are both a vibrating screening machine and an electromagnetic iron remover, the screening time of the vibrating screening machine is 8 to 10 minutes, the current of the electromagnetic iron remover is between 0.5 and 2 amperes, and the waste refractory particles that meet the requirements are obtained by screening.

[0011] As a preferred embodiment of the present invention, the homogenization equipment in step E) is a rotary kiln, the temperature of the rotary kiln is between 1200° C. and 1500° C., and the heating time of the rotary kiln is 30 to 60 minutes.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adds the functionality of performing multiple treatment methods to increase the treatment quality, so that it has the effect of deeply treating the waste refractory materials to improve the treatment quality, and prevents the situation in which the treatment quality is not stable enough during the solid waste recycling treatment. DETAILED DESCRIPTION

[0013] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0014] The invention provides a solid waste recycling process for waste refractory materials, comprising the steps of: A) recycling and classification; B) cleaning impurities; C) crushing and processing; D) screening and iron removal; E) homogenization treatment; and F) deep processing.

[0015] The present invention is further configured to include the following steps: 1) Step A) The waste refractory materials need to be recycled first, and the recycled waste refractory materials should be classified according to material, composition, pollution degree, etc.; 2) Step B) The surface of the classified waste refractory materials is often adhered with impurities such as dust, soil, slag, etc., which need to be removed by water washing or other methods; 3) Step C) sending the cleaned waste refractory materials into a crusher for crushing and collecting them after crushing; 4) Step D) The crushed particles need to be screened to obtain particles of different sizes, and magnetic separation and other methods are used to remove metallic iron from the particles to prevent affecting the performance of the recycled product; 5) Step E) homogenizing the crushed and screened particles to ensure the quality stability of the regenerated product; 6) Step F) Depending on the requirements of the recycled products, the particles are further processed, such as grinding, burning, impregnation, etc., to improve the intrinsic quality and added value of the raw materials.

[0016] The present invention is further configured such that the water washing device in step B) is a cleaning machine, the cleaning water volume of the cleaning machine is 3-6 liters / minute, and the cleaning time is 1-3 minutes.

[0017] The present invention is further configured as follows: in step C), the crusher is divided into a cone crusher and a ball mill, the crushing speed of the cone crusher is 200-600 rpm, the crushing time is 2-5 minutes, and the crushing speed of the ball mill is 50-400 rpm, and the crushing time is 5-8 minutes.

[0018] The present invention is further configured that the screening and iron removal equipment in step D) are both a vibrating screening machine and an electromagnetic iron remover, the screening time of the vibrating screening machine is 8 to 10 minutes, the current of the electromagnetic iron remover is between 0.5 and 2 amperes, and the waste refractory particles that meet the requirements are obtained by screening.

[0019] The present invention is further configured such that, in step E), the homogenizing equipment is a rotary kiln, the temperature of the rotary kiln is between 1200° C. and 1500° C., and the heating time of the rotary kiln is 30 to 60 minutes. Example

[0020] A solid waste recycling process for waste refractory materials comprises the following steps: 1) Step A) The waste refractory materials need to be recycled first, and the recycled waste refractory materials should be classified according to material, composition, pollution degree, etc.; 2) Step B) The surface of the classified waste refractory materials is often adhered with impurities such as dust, soil, slag, etc., which need to be removed by water washing or other methods. The washing water volume of the washing machine is 3 liters / minute and the washing time is 2 minutes; 3) Step C) The cleaned waste refractory materials are sent to a crusher for crushing and then collected. The crushing speed of the cone crusher is 300 rpm and the crushing time is 2 minutes. The crushing speed of the ball mill is 400 rpm and the crushing time is 6 minutes. 4) Step D) The crushed particles need to be screened to obtain particles of different sizes. At the same time, magnetic separation and other methods are used to remove the metallic iron in the particles to prevent the performance of the recycled product from being affected. The screening time of the vibrating screener is 8 minutes, and the current of the electromagnetic iron remover is between 2 amperes; 5) Step E) The crushed and screened particles are homogenized to ensure the quality stability of the regenerated product. The rotary kiln temperature is between 1300°C and the rotary kiln heating time is 35 minutes; 6) Step F) Depending on the requirements of the recycled products, the particles are further processed, such as grinding, burning, impregnation, etc., to improve the intrinsic quality and added value of the raw materials. Example

[0021] A solid waste recycling process for waste refractory materials comprises the following steps: 1) Step A) The waste refractory materials need to be recycled first, and the recycled waste refractory materials should be classified according to material, composition, pollution degree, etc.; 2) Step B) The surface of the classified waste refractory materials is often adhered with impurities such as dust, soil, slag, etc., which need to be removed by water washing or other methods. The washing water volume of the washing machine is 5 liters / minute and the washing time is 3 minutes; 3) Step C) The cleaned waste refractory materials are sent to a crusher for crushing and then collected. The crushing speed of the cone crusher is 500 rpm and the crushing time is 4 minutes. The crushing speed of the ball mill is 200 rpm and the crushing time is 8 minutes. 4) Step D) The crushed particles need to be screened to obtain particles of different sizes. At the same time, magnetic separation and other methods are used to remove the metallic iron in the particles to prevent the performance of the recycled product from being affected. The screening time of the vibrating screener is 10 minutes, and the current of the electromagnetic iron remover is between 1.2 amperes; 5) Step E) The crushed and screened particles are homogenized to ensure the quality stability of the regenerated product. The rotary kiln temperature is between 1400°C and the rotary kiln heating time is 45 minutes; 6) Step F) Depending on the requirements of the recycled products, the particles are further processed, such as grinding, burning, impregnation, etc., to improve the intrinsic quality and added value of the raw materials.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solid waste recycling process for waste refractory materials, characterized by: The steps A) include recycling and classification; B) cleaning impurities; C) crushing; D) screening and iron removal; E) homogenization; and F) further processing.

2. A solid waste recycling process for waste refractory materials according to claim 1, characterized in that: The method comprises the following steps: 1) Step A) The waste refractory materials need to be recycled first, and the recycled waste refractory materials should be classified according to material, composition, pollution degree, etc.; 2) The surface of the waste refractory materials after the classification in step B) is often adhered with impurities such as dust, soil, slag, etc., which need to be removed by washing with water or the like; 3) Step C) sending the cleaned waste refractory materials into a crusher for crushing and collecting them after crushing; 4) Step D) The crushed particles need to be screened to obtain particles of different sizes, and the metallic iron in the particles is removed by magnetic separation or other methods to prevent affecting the performance of the regenerated product; 5) Step E) homogenizing the crushed and screened particles to ensure the quality stability of the regenerated product; 6) Step F) According to the requirements of the recycled products, the particles are further processed, such as grinding, burning, impregnation, etc., to improve the intrinsic quality and added value of the raw materials.

3. A solid waste recycling process for waste refractory materials according to claim 2, characterized in that: The water washing equipment in step B) is a cleaning machine, the cleaning water volume of the cleaning machine is 3 to 6 liters / minute, and the cleaning time is 1 to 3 minutes.

4. A solid waste recycling process for waste refractory materials according to claim 2, characterized in that: In the step C), the crusher is divided into a cone crusher and a ball mill. The crushing speed of the cone crusher is 200-600 rpm and the crushing time is 2-5 minutes. The crushing speed of the ball mill is 50-400 rpm and the crushing time is 5-8 minutes.

5. A solid waste recycling process for waste refractory materials according to claim 2, characterized in that: In the step D), the screening and iron removal equipment are both a vibrating screener and an electromagnetic iron remover. The screening time of the vibrating screener is 8 to 10 minutes, and the current of the electromagnetic iron remover is between 0.5 and 2 amperes. The waste refractory particles that meet the requirements are obtained through screening.

6. A solid waste recycling process for waste refractory materials according to claim 2, characterized in that: The homogenization equipment in step E) is a rotary kiln, the temperature of the rotary kiln is between 1200° C. and 1500° C., and the heating time of the rotary kiln is 30 to 60 minutes.