Desulfurized fly ash curing method

Abstract

The invention relates to the technical field of desulfurization ash curing, in particular to a desulfurization ash curing method which comprises the following steps: performing physical and chemical index detection and environmental protection detection on various industrial waste residues to be used to ensure that no major pollution source exists and further screen out usable raw materials; aiming at physical and chemical properties of different raw materials and engineering requirements on a finished product, carrying out a laboratory mix proportion test so as to determine the addition amount of each raw material; stirring according to the laboratory mix proportion and the specified time and flow, and determining the qualification of the stirring process according to the state evaluation value of the stirred mixture; airing the uniformly stirred mixture, and compacting the aired mixture by adopting a road roller and a mechanical ramming process; maintaining the compacted mixture in a heat preservation and moisture preservation manner; and performing conventional soil mechanical index detection and pollutant content detection on the cured materials at different ages to determine the adjustment of the desulfurization ash curing process.

Description

Technical Field

[0001] The invention relates to the technical field of desulfurization ash solidification, and in particular to a desulfurization ash solidification method. Background Art

[0002] Quicklime is used to neutralize sulfur dioxide in coal-fired boiler smoke, and its byproduct is desulfurized ash, the main component of which is calcium sulfate or calcium sulfite. It is easy to generate dust and lose, and is the focus of environmental protection management.

[0003] The common treatment method for desulfurization ash is to produce asbestos tiles after cement solidification. With my country's environmental protection governance and national strength taking off, the asbestos tile industry is gradually declining, and the treatment and application of desulfurization ash has become a problem: as a high-energy-consuming cement production, it is also the focus of environmental protection governance.

[0004] China Patent Publication No.: CN117902868A discloses a sludge solidifying agent using carbon-fixed desulfurization ash, which is composed of 12-15% cement clinker, 50-55% mineral powder, 15-20% steel slag powder, 10-15% carbon-fixed desulfurization ash, 1-2% solid admixture, and 1-2% liquid admixture by mass percentage. The invention uses desulfurization ash to fix CO2 in industrial tail gas to improve the activity of desulfurization ash, and then compound carbon-fixed desulfurization ash with cement clinker, mineral powder, steel slag powder, solid admixture, and liquid admixture to obtain sludge solidifying agent. The invention does not need to use chemical means such as various flotation agents to enrich the fixed carbon components in the desulfurized ash, and the cementitious activity of the desulfurized ash after carbon fixation is greatly improved, which can better exert the sulfate stimulation effect and achieve a super-superposition coupling effect with the admixture. It can be used together with the cement clinker cementitious material system to prepare a sludge solidifier, which can improve the solidification strength of the sludge and the solidification effect of the heavy metals in the sludge while treating waste with waste.

[0005] It can be seen that the existing technology has the problem of insufficiently precise control over the desulfurization ash solidification process, resulting in low mechanical properties and poor durability of the final solidified product. Summary of the invention

[0006] To this end, the present invention provides a desulfurization ash solidification method to overcome the problem in the prior art that the desulfurization ash solidification process is not accurately controlled, resulting in low mechanical properties and poor durability of the final solidified product.

[0007] To achieve the above object, the present invention provides a desulfurization ash solidification method, comprising:

[0008] Conduct physical, chemical index and environmental testing on various industrial waste residues to be used to ensure that there are no major pollution sources and then select usable raw materials;

[0009] According to the physical and chemical properties of different raw materials and the engineering requirements for finished products, laboratory mix proportion tests are carried out to determine the addition amount of various raw materials;

[0010] According to the laboratory mix ratio, stir according to the specified time and process, and determine the eligibility of the stirring process based on the state evaluation value of the stirred mixture;

[0011] The uniformly stirred mixture is air-dried, and the air-dried mixture is compacted by a roller or mechanical tamping process;

[0012] The compacted mixture is maintained by heat preservation and moisture retention;

[0013] The cured solidified material is subjected to routine soil mechanics index testing and pollutant content testing to determine adjustments to the desulfurization ash solidification treatment process.

[0014] Further, when determining the eligibility of the stirring process, the stirring process is determined to be qualified based on the comparison result that the state evaluation value of the stirred mixture is greater than or equal to the preset state evaluation value, or the stirring process is determined to be unqualified based on the comparison result that the state evaluation value of the stirred mixture is less than the preset state evaluation value.

[0015] Furthermore, when the stirring process is unqualified, the amount of water added is adjusted by a first adjustment coefficient according to a comparison result that the stirring time is greater than or equal to a preset stirring time.

[0016] Furthermore, when the stirring process is unqualified, the stirring time is adjusted by a second adjustment coefficient according to a comparison result that the stirring time is less than a preset stirring time.

[0017] Furthermore, when the stirring process is qualified, the uniformly stirred mixture is aired, and according to the comparison result that the moisture content of the mixture after airing is within a preset moisture content range, it is determined that the mixture is compacted.

[0018] Furthermore, when it is determined that the mixture is to be compacted, the compacted mixture is cured by heat preservation and moisture retention, and the curing temperature is generally not less than 5 degrees Celsius.

[0019] Furthermore, when conventional soil mechanics index tests and pollutant content tests are carried out on solidified materials of different ages, the adjustment of the desulfurization ash solidification process is determined based on the comparison result that the pollutant content of the solidified materials is greater than or equal to the preset pollutant content, or a secondary judgment is determined based on the comparison result that the pollutant content of the solidified materials is less than the preset pollutant content.

[0020] Furthermore, when it is determined to perform a secondary judgment, the adjustment of the desulfurization ash solidification process is determined according to the comparison result that the conventional soil mechanics index value of the solidified object is less than the preset conventional soil mechanics index value.

[0021] Furthermore, when determining to adjust the desulfurization ash solidification process, it is determined to adjust the preset moisture content range with a third adjustment coefficient according to a comparison result that the strength uniformity of the solidified material is greater than or equal to a preset strength uniformity.

[0022] Furthermore, when it is determined to adjust the desulfurization ash solidification process, it is determined to adjust the preset state evaluation value with a fourth adjustment coefficient according to the comparison result that the strength uniformity of the solidified material is less than the preset strength uniformity.

[0023] Compared with the prior art, the beneficial effect of the present invention is that the present invention can fully reflect the waste utilization and resource regeneration: sludge, alkali residue, slag, fly ash, desulfurization ash and other industrial waste residues are all rare resources, and make full use of local industrial waste residue resources. The present invention is beneficial to environmental protection: the Chinese government and enterprises have invested heavily in the treatment of industrial waste residues. Desulfurization ash, alkali residue and other industrial waste residues are good chemical and building materials. Iron tailings are also industrial waste residues that must be treated and comprehensively utilized by ore dressing plants. The present invention realizes the waste utilization of desulfurization ash. After adopting the technology of the present invention, these industrial waste residues can be fully utilized to form the surface layer and filling layer of marine engineering, replacing the increasingly scarce natural resources of sand and gravel.

[0024] Furthermore, the present invention determines the uniformity of stirring by analyzing the state of the mixture after stirring, determines whether large particles still exist after stirring according to the number of bubbles in the mixture after stirring, determines whether the stirring is uniform according to the uniformity of the chromaticity value of the mixture after stirring, and then determines the eligibility of the stirring process. The above method improves the accuracy of the analysis of the desulfurization ash solidification process and thus improves the performance of the solidified material obtained by solidifying the desulfurization ash.

[0025] Furthermore, the present invention determines an adjustment method for the stirring process by analyzing the stirring time of a mixture that fails the stirring process. When the stirring time is greater than or equal to a preset stirring time, it indicates that excessive addition of water causes a large number of bubbles to appear during the stirring process, resulting in uneven stirring. It is determined to reduce the amount of water added by the first adjustment coefficient. When the stirring time is less than the preset stirring time, it indicates that the uneven stirring is caused by the short stirring time. It is determined to increase the stirring time of the mixer by the second adjustment coefficient. The above method improves the accuracy of the control of the desulfurization ash solidification process and thereby improves the mechanical properties of the desulfurization ash solidification product.

[0026] Furthermore, the present invention analyzes the moisture content of the mixture after drying, and when the mixture is within a preset moisture content range, compacts the mixture. The present invention controls the moisture content of the mixture to improve the strength and durability of the desulfurization ash solidification product.

[0027] Furthermore, the present invention determines the adjustment of the desulfurization ash solidification process by analyzing the pollutant content of the solidified product. When the pollutant content is greater than or equal to the preset pollutant content, the desulfurization ash solidification process is adjusted. When the pollutant content is less than the preset pollutant content, the solidified product is subjected to conventional soil mechanical property index testing to determine the adjustment of the desulfurization ash solidification process. The above method improves the accuracy of the control of the desulfurization ash solidification process and thus improves the mechanical properties of the solidified product.

[0028] Furthermore, the present invention determines an adjustment method based on a comparison result of the strength uniformity of the solidified material with a preset strength uniformity. When the strength uniformity of the solidified material is greater than or equal to the preset uniformity, it indicates that the solidified material has a high water content during the solidification process, resulting in low mechanical properties. The third adjustment coefficient is used to reduce the preset moisture content range. When the strength uniformity of the solidified material is less than the preset uniformity, it indicates that the strength is uneven due to uneven stirring during the solidification process. The fourth adjustment coefficient is used to increase the preset state evaluation value of the mixture. The above method improves the accuracy of controlling the desulfurization ash solidification process and thereby obtains a solidified material with high mechanical properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The following is a working flow chart of the desulfurization ash solidification method according to an embodiment of the present invention;

[0030] Figure 2 A work flow chart for determining the eligibility of a stirring process in a desulfurization ash solidification method according to an embodiment of the present invention;

[0031] Figure 3 A flowchart for determining a stirring process adjustment method for a desulfurization ash solidification method according to an embodiment of the present invention;

[0032] Figure 4 The present invention is a flowchart of the process of compacting the mixture in the desulfurization ash solidification method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0035] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0036] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] See also Figure 1-Figure 4 As shown, Figure 1 This is a step diagram of a desulfurization ash solidification method according to an embodiment of the present invention; Figure 2 A work flow chart for determining the eligibility of a stirring process in a desulfurization ash solidification method according to an embodiment of the present invention; Figure 3 A flowchart for determining a stirring process adjustment method for a desulfurization ash solidification method according to an embodiment of the present invention; Figure 4 The present invention is a flowchart of the process of compacting the mixture in the desulfurization ash solidification method according to an embodiment of the present invention.

[0038] The desulfurization ash solidification method according to the embodiment of the present invention comprises:

[0039] Step S1, conducting physical, chemical index and environmental testing on various industrial waste residues to be used to ensure that there are no major pollution sources and then screen out usable raw materials;

[0040] Step S2: Conduct laboratory mix ratio tests based on the physical and chemical properties of different raw materials and the engineering requirements for finished products to determine the addition amount of various raw materials;

[0041] Step S3, stirring according to the laboratory mix ratio, the specified time and process, and determining the eligibility of the stirring process according to the state evaluation value of the stirred mixture;

[0042] Step S4, airing the uniformly stirred mixture, and compacting the aired mixture using a roller or mechanical tamping process;

[0043] Step S5, curing the compacted mixture by heat preservation and moisture retention;

[0044] Step S6: Conduct conventional soil mechanics index testing and pollutant content testing on the cured solidified material to determine adjustments to the desulfurization ash solidification treatment process.

[0045] The various industrial waste residues described in the embodiments of the present invention include but are not limited to "desulfurization ash, slag, fly ash, alkali residue, silt and stone powder", and the conventional soil mechanics index detection includes but is not limited to "strength, density, durability and other index detection".

[0046] Specifically, the present invention can fully reflect waste utilization and resource regeneration: sludge, alkali residue, slag, fly ash, desulfurization ash and other industrial waste residues are all rare resources, and make full use of local industrial waste residue resources. The present invention is beneficial to environmental protection: the Chinese government and enterprises have invested heavily in the treatment of industrial waste residues. Desulfurization ash, alkali residue and other industrial waste residues are good chemical and building materials. Iron tailings are also industrial waste residues that must be treated and comprehensively utilized by ore dressing plants. The present invention realizes the waste utilization of desulfurization ash. After adopting the technology of the present invention, these industrial waste residues can be fully utilized to form the surface layer and filling layer of marine engineering, replacing the increasingly scarce natural resources of sand and gravel.

[0047] Specifically, when determining the eligibility of the stirring process, the eligibility of the stirring process is determined according to the comparison result of the state evaluation value G of the stirred mixture and the preset state evaluation value G0;

[0048] When G≥G0, the mixing process is determined to be qualified;

[0049] When G<G0, it is determined that the mixing process is unqualified;

[0050] The preset state evaluation value G0 is set to 0.85, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0051] Specifically, the state evaluation value G of the mixture is calculated by the following formula:

[0052]

[0053] Wherein, N represents the number of bubbles in the mixture after stirring, N0 represents the preset number of bubbles, S represents the uniformity of the chromaticity value of the mixture after stirring, and S0 represents the preset uniformity of the chromaticity value.

[0054] In the embodiment of the present invention, the preset number of bubbles is the historical average number of bubbles in the mixture after stirring, and the method for calculating the uniformity of the chromaticity value is as follows: use an industrial camera to take a picture of the mixture to obtain a picture, divide the picture evenly into several areas, calculate the chromaticity value of each area to obtain the average value of the chromaticity value of the entire area; the preset uniformity is the average value of the uniformity of the uniformly mixed mixture.

[0055] Specifically, the present invention determines the uniformity of stirring by analyzing the state of the mixture after stirring, determines whether large particles still exist after stirring according to the number of bubbles in the mixture after stirring, determines whether the stirring is uniform according to the uniformity of the chromaticity value of the mixture after stirring, and then determines the qualification of the stirring process. The above method improves the accuracy of the analysis of the desulfurization ash solidification process and thus improves the performance of the solidified material obtained by the desulfurization ash solidification.

[0056] Specifically, when the stirring process is unqualified, the adjustment method of the stirring process is determined according to the comparison result between the stirring time T and the preset stirring time T0;

[0057] When T≥T0, determining to adjust the stirring process in a first adjustment manner;

[0058] When T<T0, determine to adjust the stirring process in a second adjustment manner;

[0059] The preset stirring time T0 is a historical average value of the stirring time of the mixture, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0060] Specifically, when the stirring process is adjusted in the first adjustment mode, the amount of water added Q is adjusted by the first adjustment coefficient K1;

[0061] When the stirring process is adjusted in the second adjustment mode, it is determined that the stirring time T of the stirrer is adjusted by the second adjustment coefficient K2.

[0062] Specifically, the first adjustment coefficient K1 is calculated and set by the following formula:

[0063]

[0064] The second adjustment coefficient K2 is calculated and set by the following formula:

[0065]

[0066] The adjusted opening angle is set to Q'=K1×Q;

[0067] The adjusted mixer power is set to T'=K2×T.

[0068] Specifically, the present invention determines the adjustment method for the stirring process by analyzing the stirring time of a mixture that fails the stirring process. When the stirring time is greater than or equal to the preset stirring time, it indicates that excessive addition of water causes a large number of bubbles to appear during the stirring process, resulting in uneven stirring. It is determined to reduce the amount of water added by the first adjustment coefficient for adjustment. When the stirring time is less than the preset stirring time, it indicates that the uneven stirring is caused by the short stirring time. It is determined to increase the stirring time of the mixer by the second adjustment coefficient. The above method improves the accuracy of the control of the desulfurization ash solidification process and thereby improves the mechanical properties of the desulfurization ash solidification product.

[0069] Specifically, when the stirring process is qualified, the uniformly stirred mixture is aired, and the mixture is compacted according to the comparison result of the moisture content Y of the mixture after airing and the preset moisture content range Y0;

[0070] When Y is within the range of Y0, it is determined that the mixture is subjected to compaction treatment;

[0071] When Y is not within the range of Y0, it is determined that the mixture is not subjected to compaction treatment.

[0072] The preset moisture content range in the embodiment of the present invention is the optimal moisture content range value obtained by multiple tests in the laboratory.

[0073] Specifically, the present invention analyzes the moisture content of the mixture after drying, and when the mixture is within a preset moisture content range, compacts the mixture. The present invention controls the moisture content of the mixture to improve the strength and durability of the desulfurization ash solidification product.

[0074] Specifically, when it is determined that the mixture is to be compacted, the compacted mixture is cured by heat preservation and moisture retention, and the curing temperature is not less than 5 degrees Celsius.

[0075] Specifically, when conventional soil mechanics index detection and pollutant content detection are performed on the cured solidified material, the adjustment of the desulfurization ash solidification process is determined based on the comparison result of the pollutant content H of the solidified material with the preset pollutant content H0;

[0076] When H≥H0, it is determined to adjust the desulfurization ash solidification process;

[0077] When H<H0, it is determined to perform a secondary judgment;

[0078] Among them, the value of the preset pollutant content H0 is determined by the national pollutant emission standards.

[0079] In the embodiment of the present invention, the conventional soil mechanics index test of the solidified material is preferably performed on the solidified material that has been cured for 28 days.

[0080] Specifically, when the secondary determination is performed, the adjustment of the desulfurization ash solidification process is determined according to the comparison result of the conventional soil mechanics index value Q of the solidified material and the preset conventional soil mechanics index value Q0;

[0081] When Q<Q0, it is determined to adjust the desulfurization ash solidification process;

[0082] When Q≥Q0, it is determined that the desulfurization ash solidification process is not adjusted;

[0083] Among them, the preset conventional soil mechanics index value Q0 is the average value determined by multiple tests in the laboratory.

[0084] Specifically, the present invention determines the adjustment of the desulfurization ash solidification process by analyzing the pollutant content of the solidified product. When the pollutant content is greater than or equal to the preset pollutant content, the desulfurization ash solidification process is adjusted. When the pollutant content is less than the preset pollutant content, the solidified product is subjected to conventional soil mechanical property index testing to determine the adjustment of the desulfurization ash solidification process. The above method improves the accuracy of the control of the desulfurization ash solidification process and thus improves the mechanical properties of the solidified product.

[0085] Specifically, when it is determined to adjust the desulfurization ash solidification process, the adjustment method is determined according to the comparison result of the strength uniformity P of the solidified material and the preset strength uniformity P0;

[0086] When P≥P0, determining to adjust the desulfurization ash solidification process in a third adjustment manner;

[0087] When P<P0, it is determined to adjust the desulfurization ash solidification process in a fourth adjustment manner;

[0088] The preset value of the strength uniformity P0 is the historical average value of the strength uniformity of the solidified material, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0089] Specifically, when the desulfurization ash solidification process is adjusted in the third adjustment mode, it is determined that the preset moisture content range is adjusted in accordance with the third adjustment coefficient K3;

[0090] When the desulfurization ash solidification process is adjusted in the fourth adjustment manner, it is determined that the preset state evaluation value is adjusted in accordance with the fourth adjustment coefficient K4.

[0091] Specifically, the third adjustment coefficient K3 is calculated and set by the following formula:

[0092]

[0093] The fourth adjustment coefficient K4 is calculated and set by the following formula:

[0094]

[0095] The adjusted preset moisture content range is set to Y0'=K3×Y0;

[0096] The adjusted preset state evaluation value is set to G0'=K3×G0.

[0097] Specifically, the present invention determines an adjustment method based on a comparison result of the strength uniformity of the solidified material with a preset strength uniformity. When the strength uniformity of the solidified material is greater than or equal to the preset uniformity, it indicates that the solidified material has a high water content during the solidification process, resulting in low mechanical properties. It is determined that the preset moisture content range is reduced by the third adjustment coefficient. When the strength uniformity of the solidified material is less than the preset uniformity, it indicates that the strength is uneven due to uneven stirring during the solidification process. It is determined that the preset state evaluation value of the mixture is increased by the fourth adjustment coefficient. The above method improves the accuracy of the control of the desulfurization ash solidification process and thereby obtains a solidified material with high mechanical properties.

[0098] Example 1, an example of iron tailings solidification technology, the scheme and steps are as follows:

[0099] (1) Mixing ratio: sludge 100, water 3.5, curing agent 10.9 (including desulfurized ash: 5), catalyst 0.05.

[0100] (2) Implementation steps: material delivery - testing - sludge and curing agent mixing - transportation, spreading - drying and compacting - maintenance - testing.

[0101] (3) Index: 28-day compressive strength 7.902 MPa.

[0102] Example 2, a novel desulfurization ash solidification technology example, the scheme and steps are as follows:

[0103] (1) Mixing ratio: iron tailings 100: curing agent 25.0 (including desulfurization ash: 10), catalyst 0.02.

[0104] (2) Implementation steps: Material delivery - testing - mixing of iron tailings and solidifying agent - transportation and spreading - compaction - maintenance - testing.

[0105] (3) Index: 28-day compressive strength 12.774 MPa, used for cement stabilized layer.

[0106] Example 3, a novel desulfurization ash solidification technology example, the scheme and steps are as follows:

[0107] (1) Mixing ratio: iron tailings (sludge) 100: desulfurized ash 20: curing agent 13.5 (including desulfurized ash: 10), catalyst 0.01. Used as land reclamation material.

[0108] (2) Implementation steps: materials entering the site - testing - mixing machinery in place - mixing alkali slag and curing agent to make slurry - mixing tailings - compaction and maintenance - testing.

[0109] (3) Index: 28-day compressive strength 1.912 MPa.

[0110] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0111] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A desulfurization ash solidification method, characterized in that: include: Conduct physical, chemical index and environmental testing on various industrial waste residues to be used to ensure that there are no major pollution sources and then select usable raw materials; According to the physical and chemical properties of different raw materials and the engineering requirements for finished products, laboratory mix proportion tests are carried out to determine the addition amount of various raw materials; According to the laboratory mix ratio, stir according to the specified time and process, and determine the eligibility of the stirring process based on the state evaluation value of the stirred mixture; The uniformly stirred mixture is air-dried, and the air-dried mixture is compacted by a roller or mechanical tamping process; The compacted mixture is maintained by heat preservation and moisture retention; The cured solidified material is subjected to routine soil mechanics index testing and pollutant content testing to determine adjustments to the desulfurization ash solidification treatment process.

2. The desulfurization ash solidification method according to claim 1, characterized in that: When determining the eligibility of the stirring process, the stirring process is determined to be qualified based on the comparison result that the state evaluation value of the stirred mixture is greater than or equal to the preset state evaluation value, or the stirring process is determined to be unqualified based on the comparison result that the state evaluation value of the stirred mixture is less than the preset state evaluation value.

3. The desulfurization ash solidification method according to claim 2, characterized in that: When the stirring process is unqualified, the amount of water added is adjusted by a first adjustment coefficient according to a comparison result that the stirring time is greater than or equal to a preset stirring time.

4. The desulfurization ash solidification method according to claim 2, characterized in that: When the stirring process is unqualified, the stirring time is adjusted by a second adjustment coefficient according to a comparison result that the stirring time is less than a preset stirring time.

5. The desulfurization ash solidification method according to claim 2, characterized in that: When the stirring process is qualified, the uniformly stirred mixture is aired, and according to the comparison result that the moisture content of the mixture after airing is within the preset moisture content range, it is determined that the mixture is compacted.

6. The desulfurization ash solidification method according to claim 5, characterized in that: When it is determined that the mixture is to be compacted, the compacted mixture is cured by heat preservation and moisture retention, and the curing temperature is generally not less than 5 degrees Celsius.

7. The desulfurization ash solidification method according to claim 1, characterized in that: When conventional soil mechanics index tests and pollutant content tests are conducted on solidified materials of different ages, the desulfurization ash solidification process is adjusted based on the comparison results that the pollutant content of the solidified materials is greater than or equal to the preset pollutant content, or a secondary judgment is made based on the comparison results that the pollutant content of the solidified materials is less than the preset pollutant content.

8. The desulfurization ash solidification method according to claim 7, characterized in that: When it is determined to perform a secondary judgment, the desulfurization ash solidification process is adjusted according to the comparison result that the conventional soil mechanics index value of the solidified object is less than the preset conventional soil mechanics index value.

9. The desulfurization ash solidification method according to claim 7 or 8, characterized in that: When determining to adjust the desulfurization ash solidification process, the preset moisture content range is adjusted using a third adjustment coefficient according to a comparison result that the strength uniformity of the solidified material is greater than or equal to a preset strength uniformity.

10. The desulfurization ash solidification method according to claim 7 or 8, characterized in that: When it is determined to adjust the desulfurization ash solidification process, it is determined to adjust the preset state evaluation value with a fourth adjustment coefficient according to the comparison result that the strength uniformity of the solidified material is less than the preset strength uniformity.

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