A method for proportioning and preparation system of a solid waste solidifying agent for building construction.

Abstract

This invention provides a method for proportioning and preparing a solid waste curing agent for building construction, relating to the field of curing agent technology. The solid waste curing agent comprises the following components by mass ratio: 40-70% carbide slag; 10-20% fly ash; 40-50% blast furnace slag; 0-10% phosphogypsum; and the remainder is pure water. This invention's solid waste curing agent is prepared by proportioning carbide slag, mineral powder, fly ash, and phosphogypsum, replacing traditional cement-based curing agents. The material cost is only one-half or one-third of that of cement. It achieves solid waste utilization and has excellent economic and environmental benefits. It solves the problem that current soil curing agents are mainly cement-based, and cement production generates a large amount of carbon dioxide, resulting in high energy consumption, high pollution, and the consumption of a large amount of non-renewable resources.

Description

Technical Field

[0001] This invention relates to the field of curing agent technology, and in particular to a method for proportioning and preparing a solid waste curing agent for building construction. Background Technology

[0002] Cement is a commonly used curing agent in engineering projects such as water-stop curtains. Cement is made primarily from limestone and clay, which are crushed, batched, and ground into raw meal, then calcined into clinker, and finally ground with the addition of gypsum. However, cement production consumes mineral resources and coal, and its carbon dioxide emissions are second only to the power industry.

[0003] On the other hand, my country's annual industrial solid waste (hereinafter referred to as "solid waste") production was approximately 3.97 billion tons in 2021. Stockpiling not only occupies land resources and increases enterprise operating costs, causing pollution to surrounding soil, water bodies, and air, but also poses safety hazards such as dam breaches and harm to human health. Currently, the comprehensive utilization rate of various solid wastes varies greatly. In 2018, fly ash production reached 530 million tons, with a comprehensive utilization rate of 74.9%; slag production reached 310 million tons, with a comprehensive utilization rate of 71%; phosphogypsum production reached 50 million tons, with a comprehensive utilization rate of 30%, and its historical cumulative stockpiling has exceeded 500 million tons; in 2020, my country's total metallurgical slag production was approximately 689 million tons, mainly iron and steel metallurgical slag, with steel slag production exceeding 100 million tons annually, but a comprehensive utilization rate of only 29.5%. Based on the above statistics, the current utilization rate of solid wastes such as fly ash, phosphogypsum, and steel slag is relatively low.

[0004] Currently, cement is the primary solidification agent for soil, and cement production generates a large amount of carbon dioxide. The production process also leads to high energy consumption (high-temperature calcination), high pollution (dust), and the depletion of large amounts of non-renewable resources (limestone, clay). With the rapid development of the national economy, industrial solid waste has increasingly become a major cause of environmental pollution. Replacing cement-based solidification agents with industrial solid waste would achieve both environmental and economic benefits, aligning with my country's path of "sustainable development."

[0005] Currently, cement slurry mixers are widely used as production equipment for preparing curing agents. These mixers mix the raw materials to form the curing agent. However, in practical applications, most cement slurry mixers have exposed raw material inlets, creating a safety hazard where workers or non-workers may put their hands inside the mixer during the mixing process, either to clean materials adhering to the inner wall or for other reasons. Even in cement slurry mixers with concealed raw material inlets, the concealment structure lacks proper protection and can be easily rotated, still posing a safety risk of hands entering the mixer. These are deficiencies. Summary of the Invention

[0006] This disclosure relates to a solid waste curing agent for building construction, which is made of carbide slag, mineral powder, fly ash and phosphogypsum in a certain proportion. It replaces the traditional cement-based curing agent and can be prepared simply by mixing and stirring without additional processing. The material cost is only one-half or one-third of that of cement, and it has good economic and environmental benefits.

[0007] In a first aspect, this disclosure provides a system for preparing a solid waste solidifying agent for construction, specifically comprising: a mixing tank, wherein a mixing groove is formed on the top surface of the mixing tank, and a flow-guiding attachment protrusion connected to the mixing groove is provided on the top side of the outer periphery of the mixing tank; two horizontal plates are fixedly installed on the top surface of the mixing tank in a symmetrical arrangement, and two connecting plates are fixedly connected between the two horizontal plates in a symmetrical arrangement; a set of motors is fixedly installed on the top surfaces of the two horizontal plates and the top surfaces of the two connecting plates by means of studs and nuts, the motor shaft passing through the empty area between the two horizontal plates and the two connecting plates located inside the mixing groove, and a mixing blade is fixedly installed on the motor shaft; two rotating seats are fixedly installed on the top surfaces of the two horizontal plates in a symmetrical arrangement; a rectangular plate structure front baffle is provided in front of the front horizontal plate, and two rotating seats are fixedly installed on the rear side of the top surface of the front baffle in a symmetrical arrangement, and the front horizontal plate and the front baffle are rotatably connected by rotating seats connected by a shaft. When the bottom surface of the front baffle is in contact with the top surface of the mixing tank, the front baffle covers the front half of the opening at the top of the mixing tank. A rectangular rear baffle is located behind the horizontal plate on the rear side. Two rotating seats are symmetrically fixedly installed on the front side of the top of the rear baffle. The horizontal plate on the rear side and the rear baffle are rotatably connected via rotating seats connected by a rotating shaft. When the bottom surface of the rear baffle is in contact with the top surface of the mixing tank, the rear baffle covers the front half of the opening at the top of the mixing tank. The rear half of the opening at the top of the mixing tank is blocked; a shielding mesh plate matching the structural dimensions of the empty area on each of the two horizontal plates is fixedly installed in the left and right empty areas; a rectangular locking block is fixedly installed on the upper left side of the outer peripheral surface of the mixing tank, and a circular groove is opened on the left end face of the locking block; a set of motor start and stop switches is fixedly installed on the right side of the inner end of the groove. The motor start and stop switches are tactile switches with the button facing to the left.

[0008] In at least some embodiments, a slot b with a rectangular groove structure is provided on the right side of the bottom end face of the locking block, and the slot b passes through the front end face and the rear end face of the locking block; a front extension plate with a rectangular plate structure is fixedly installed on the rear left side of the bottom end face of the front baffle, and a front insert block with a rectangular block structure is fixedly installed on the rear end face of the front extension plate. A mating hole a is provided on the rear side of the front insert block, which passes through the left end face and the right end face of the front insert block. The mating hole a is a round hole, and the diameter of the mating hole a is consistent with the diameter of the pressing groove.

[0009] In at least some embodiments, when the bottom end face of the front baffle plate is in contact with the top end face of the mixing tank, the rear end face of the front extension plate is in contact with the front end face of the locking block. At this time, the front insert block is inserted into the slot b, and the mating hole a and the pressing groove are in a coaxial state.

[0010] In at least some embodiments, a slot a with a rectangular groove structure is provided on the left side of the bottom end face of the locking block, and the slot a passes through the front end face and the rear end face of the locking block; a rear extension plate with a rectangular plate structure is fixedly installed on the front left side of the bottom end face of the rear cover plate, and a rear insert block with a rectangular block structure is fixedly installed on the front end face of the rear extension plate. A mating hole b is provided on the front side of the rear insert block, which passes through the left end face and the right end face of the rear insert block. The mating hole b is a round hole, and the diameter of the mating hole b is consistent with the diameter of the pressing groove.

[0011] In at least some embodiments, when the bottom end face of the rear baffle plate is in contact with the top end face of the mixing tank, the front end face of the rear extension plate is in contact with the rear end face of the locking block. At this time, the rear insert block is limited and inserted into the slot a, and the mating hole b and the pressing groove are in a coaxial state.

[0012] In at least some embodiments, a rectangular base is provided below the mixing tank, and a rectangular side support block is fixedly installed on the left and right sides of the top surface of the base; a rotation hole is provided on the left and right ends of the upper side of each of the two side support blocks; a circular rotating auxiliary protrusion is fixedly installed on the left and right sides of the outer peripheral surface of the mixing tank, and the diameter of the rotating auxiliary protrusion is larger than the diameter of the rotation hole; an annular rotating groove is provided on the outer peripheral surface of each of the two rotating auxiliary protrusions, and the two annular rotating grooves are rotatably connected to the two rotation holes respectively; three grip rods are fixedly installed on the rear side of the outer peripheral surface of the mixing tank in a uniform vertical distribution.

[0013] In at least some embodiments, a threaded through hole extending through the right end face is provided above the left end face of the side support block located on the left side, and the threaded through hole and the pressing groove are coaxial; a pressing stud is installed in the threaded through hole, and a knob head coaxially arranged is fixedly installed on the left end face of the pressing stud; when the pressing stud rotates to the right along the threaded through hole until the right end face of the knob head contacts the left end face of the side support block located on the left side, the right end face of the pressing stud presses against the button end of the motor start / stop switch, and the motor start / stop switch is in the pressed start state.

[0014] In at least some embodiments, a control box is fixedly installed on the left end face of the side support block located on the left side, and the motor start / stop switch and the motor are electrically connected to the control box; when the motor start / stop switch is in the pressed start state, the motor start / stop switch feeds a feedback signal to the control box, and the control box controls the motor to start; a rectangular plate mounting auxiliary plate is fixedly installed on the lower side of the side end face of each of the two side support blocks, and each of the two mounting auxiliary plates has two mounting insertion holes penetrating its bottom end face on its top surface.

[0015] This invention provides a method for proportioning and preparing a solid waste solidification agent for building construction, which has the following beneficial effects:

[0016] The solid waste curing agent of this invention is made of carbide slag, mineral powder, fly ash and phosphogypsum in a certain proportion, which can replace the traditional cement-based curing agent. In actual construction and preparation, it can be prepared simply by mixing and stirring without additional processing. Moreover, the material cost is only one-half or one-third of that of cement. It has good economic and environmental benefits on the basis of realizing solid waste utilization.

[0017] This invention, through the design of the motor start / stop switch, ensures that the motor can only be started or stopped by rotating the screw along the threaded through hole to the right to engage with it. This design effectively avoids the risk of injury caused by accidental activation of the motor start / stop switch, thus ensuring operational safety. Furthermore, during construction and preparation, the engagement of the screw with mating holes a and b limits and fixes the front and rear baffles in their closed state. This prevents the front and rear baffles from being rotated or unfolded until the limiting fixation is released, effectively preventing workers or non-workers from inserting their hands into the mixing tank and ensuring operational safety.

[0018] This invention provides comprehensive protection for the opening of the mixing tank by using a front and rear baffle plate in a rotated and closed state, along with two baffle mesh plates. This effectively prevents workers or non-workers from inserting their hands into the mixing tank during mixing. Furthermore, in addition to limiting and fixing the front and rear baffle plates through the insertion and engagement of the pressing studs with mating holes a and b, this invention also simultaneously limits and fixes the mixing tank body, preventing it from rotating before the limiting and fixing is released, thus ensuring mixing quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0020] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0021] In the attached diagram:

[0022] Figure 1 A schematic diagram of the main view structure of this application is shown;

[0023] Figure 2 A schematic diagram of the front-end axial view structure of this application is shown;

[0024] Figure 3 A schematic diagram of the rear-end axial view structure of this application is shown;

[0025] Figure 4 This diagram illustrates the structure of this application in its disassembled state.

[0026] Figure 5 This paper shows a schematic diagram of the front end of the base in the disassembled state of the anti-stud and threaded through hole of this application;

[0027] Figure 6 A schematic diagram of the front end of the mixing tank of this application is shown;

[0028] Figure 7 This application shows Figure 6 Schematic diagram of the front and rear baffles in their rotated and unfolded state;

[0029] Figure 8 This application shows Figure 6 A schematic diagram of the structure of the front and rear shields and the shielding mesh in their disassembled state;

[0030] Figure 9 A side view of the mixing tank structure of this application is shown;

[0031] Figure 10 This application shows Figure 9Enlarged sectional view of the middle AA structure;

[0032] Figure 11 This paper shows a partially enlarged cross-sectional view of the structure of the pressure stud and the pressure motor in the on / off state of the present application;

[0033] List of reference numerals

[0034] 1. Base; 101. Side support block; 102. Control box; 103. Mounting auxiliary plate; 104. Knob head; 105. Mounting insertion hole; 106. Rotation hole; 107. Threaded through hole; 108. Pressing stud;

[0035] 2. Mixing tank body; 201. Rotation auxiliary protrusion; 202. Flow guiding and attaching protrusion; 203. Handle; 204. Annular rotating groove; 205. Mating locking block; 206. Pressing groove; 207. Horizontal plate; 208. Connecting plate; 209. Stud and nut locking parts; 2010. Blinding mesh plate; 2011. Rotating seat; 2012. Front blinding plate; 2013. Rear blinding plate; 2014. Rear extension plate; 2015. Front extension plate; 2016. Mixing tank; 2017. Slot a; 2018. Slot b; 2019. Front insert block; 2020. Mating hole a; 2021. Rear insert block; 2022. Mating hole b; 2023. Motor start / stop switch;

[0036] 3. Motor; 301. Agitator blades. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example: Please refer to Figures 1 to 11 :

[0039] This invention proposes a solid waste solidification agent preparation system for construction, comprising a mixing tank 2, a mixing groove 2016 formed on the top surface of the mixing tank 2, and a flow-guiding attachment protrusion 202 connected to the mixing groove 2016 on the top side of the outer periphery of the mixing tank 2; two horizontal plates 207 are fixedly installed symmetrically on the top surface of the mixing tank 2, and two connecting plates 208 are fixedly connected symmetrically between the two horizontal plates 207; a set of motors 3 is fixedly installed on the top surfaces of the two horizontal plates 207 and the top surfaces of the two connecting plates 208 through stud and nut locking parts 209, and the shaft end of the motor 3 passes through the empty area between the two horizontal plates 207 and the two connecting plates 208 in the mixing groove 2. Inside 016, a stirring blade 301 is fixedly mounted on the shaft of motor 3. Two rotating seats 2011 are symmetrically fixedly mounted on the top surfaces of the two horizontal plates 207. A rectangular front baffle 2012 is located in front of the front horizontal plate 207. Two rotating seats 2011 are symmetrically fixedly mounted on the rear side of the top surface of the front baffle 2012. The front horizontal plate 207 and the front baffle 2012 are rotatably connected via rotating seats 2011 connected by a shaft. When the bottom surface of the front baffle 2012 is in contact with the top surface of the stirring tank 2, the front baffle 2012 covers the front half of the opening at the top of the stirring tank 2016. A rectangular rear baffle 2013 is provided behind the side horizontal plate 207. Two rotating seats 2011 are also fixedly installed symmetrically on the front side of the top of the rear baffle 2013. The rear horizontal plate 207 and the rear baffle 2013 are rotatably connected via rotating seats 2011 connected by a rotating shaft. When the bottom surface of the rear baffle 2013 is in contact with the top surface of the mixing tank 2, the rear baffle 2013 covers the rear half of the top opening of the mixing tank 2016. A baffle mesh 2010 matching the structural dimensions of the empty area is fixedly installed on each of the two horizontal plates 207 in the left and right open areas. The baffle mesh 2010 prevents the workman from... Personnel or non-personnel can extend their hands into the mixing tank 2016 through the open areas on both sides of the two horizontal plates 207. Through the mesh of the shielding mesh 2010, personnel can observe the mixing of the solid waste solidifying agent raw materials in the mixing tank 2016. A rectangular locking block 205 is fixedly installed on the upper left side of the outer periphery of the mixing tank 2. A circular groove 206 is formed on the left end of the locking block 205. A set of motor start / stop switches 2023 is fixedly installed on the right side of the inner end of the groove 206. The motor start / stop switches 2023 are touch switches, with the button facing to the left.

[0040] In this embodiment, a rectangular slot b2018 is provided on the right side of the bottom end face of the locking block 205, and the slot b2018 passes through the front end face and the rear end face of the locking block 205; a rectangular front extension plate 2015 is fixedly installed on the rear left side of the bottom end face of the front baffle 2012, and a rectangular front insert block 2019 is fixedly installed on the rear end face of the front extension plate 2015, and a through-hole is provided on the rear side of the front insert block 2019. The mating holes a2020 on the left and right ends of 019 are round holes with a diameter that matches the diameter of the pressure groove 206. When the bottom end of the front baffle 2012 is in contact with the top end of the mixing tank 2, the rear end of the front extension plate 2015 is in contact with the front end of the locking block 205. At this time, the front insert block 2019 is inserted into the slot b2018 and the mating hole a2020 and the pressure groove 206 are in a coaxial state.

[0041] In this embodiment, a rectangular slot a2017 is provided on the left side of the bottom end face of the locking block 205, and the slot a2017 passes through the front end face and the rear end face of the locking block 205; a rectangular rear extension plate 2014 is fixedly installed on the front left side of the bottom end face of the rear cover plate 2013, and a rectangular rear insert block 2021 is fixedly installed on the front end face of the rear extension plate 2014, and a through-hole is provided on the front side of the rear insert block 2021. The mating holes b2022 on the left and right end faces of 021 are round holes with a diameter that matches the diameter of the pressure groove 206. When the bottom face of the rear baffle 2013 is in contact with the top face of the mixing tank 2, the front face of the rear extension plate 2014 is in contact with the rear face of the mating locking block 205. At this time, the rear insert block 2021 is limited and inserted into the slot a2017, and the mating hole b2022 and the pressure groove 206 are in a coaxial state.

[0042] In this embodiment, a rectangular base 1 is provided below the mixing tank 2. A rectangular side support block 101 is fixedly installed on the left and right sides of the top surface of the base 1. A rotation hole 106 is provided on the left and right ends of the upper sides of each side support block 101. A circular rotation auxiliary protrusion 201 is fixedly installed on the left and right sides of the outer periphery of the mixing tank 2. The diameter of the rotation auxiliary protrusion 201 is larger than the diameter of the rotation hole 106. A circular rotation auxiliary protrusion 201 is provided on the outer periphery of each of the two rotation auxiliary protrusions 201. There is one annular rotating groove 204, and two annular rotating grooves 204 are rotatably connected to two rotating holes 106 respectively; three handles 203 are fixedly installed on the rear side of the outer circumference of the mixing tank body 2 in a uniform vertical distribution; a threaded through hole 107 is opened above the left end face of the side support block 101 located on the left side, penetrating its right end face, and the threaded through hole 107 is coaxial with the pressure groove 206; a pressure stud 108 is installed in the threaded through hole 107, and a rotating part coaxial with it is fixedly installed on the left end face of the pressure stud 108. Button 104; When the push-button stud 108 rotates to the right along the threaded through hole 107 until the right end face of the knob head 104 contacts the left end face of the side support block 101 located on the left side, the right end face of the push-button stud 108 presses against the button end of the motor start / stop switch 2023, and the motor start / stop switch 2023 is in the pressed start state; The control box 102 is fixedly installed on the left end face of the side support block 101 located on the left side, and the motor start / stop switch 2023 and the motor 3 are both electrically connected to the control box 102; When the motor start / stop switch 2023 is in the pressed state... In the start-up state, the motor start / stop switch 2023 sends a feedback signal to the control box 102, and the control box 102 controls the motor 3 to start. A rectangular mounting auxiliary plate 103 is fixedly installed on the lower side of the side end face of each of the two side support blocks 101. Each of the two mounting auxiliary plates 103 has two mounting insertion holes 105 that penetrate through its bottom end face on its top surface. By opening the mounting insertion holes 105, it is convenient for the present invention to be fixedly installed. The plug for insertion into the ground can be inserted through the mounting insertion holes 105 to fix the position of the base 1.

[0043] The working principle of this embodiment:

[0044] During fixed installation, the connector for insertion into the ground is inserted through the mounting connector hole 105 to fix the position of the base 1.

[0045] The solid waste solidifying agent comprises the following components by mass ratio: 40-70% calcium carbide slag; 10-20% fly ash; 40-50% blast furnace slag; 0-10% phosphogypsum; and the remainder is purified water.

[0046] When preparing the solid waste solidifying agent, the staff first rotates and unfolds the back cover plate 2013 to expose the rear half of the opening end of the mixing tank 2016. At this time, the staff can add carbide slag, fly ash, phosphogypsum and pure water into the mixing tank 2016 from the rear half of the opening end according to the ratio. Blast furnace slag is added into the mixing tank 2016 from the rear half of the opening end according to the ratio using a cement silo and screw unloader, for subsequent mixing.

[0047] When it is necessary to start motor 3 to mix the solid waste curing agent raw materials in mixing tank 2016, the operator can first rotate and close the front baffle 2012 and the rear baffle 2013 so that the bottom surfaces of the front baffle 2012 and the rear baffle 2013 are in contact with the top surface of the mixing tank 2. At this time, the rear end face of the front extension plate 2015 contacts the front end face of the locking block 205, and the front insert block 2019 is inserted into the slot b2018, and the mating hole a2020 is coaxial with the pressing groove 206. Then, the front end face of the rear extension plate 2014 contacts the rear end face of the locking block 205, and the rear insert block 2021 is inserted into the slot a2017, and the mating hole b2020 is coaxial with the pressing groove 206. 2. When the pressure groove 206 is in a coaxial state, the operator can squeeze the knob head 104 to rotate the pressure stud 108 to the right along the threaded through hole 107. This causes the right end of the pressure stud 108 to pass through the mating hole a2020 and the mating hole b2022 and contact the button end of the motor start / stop switch 2023. At this time, the motor start / stop switch 2023 is in the pressed start state. The motor start / stop switch 2023 sends a feedback signal to the control box 102. The control box 102 controls the motor 3 to start. The motor 3 controls the shaft end to rotate to drive the stirring blade 301 to rotate. Thus, the stirring blade 301 stirs and mixes the solid waste solidifying agent raw materials in the stirring tank 2016 to achieve the stirring preparation of solid waste solidifying agent.

[0048] Based on the above, in the process of mixing the raw materials of the solid waste solidification agent, the present invention uses the pressing studs 108, which pass through the mating holes a2020 and b2022, to limit and fix the front baffle 2012 and the rear baffle 2013 in the closed state. This prevents the front baffle 2012 and the rear baffle 2013 from rotating and unfolding before the limiting and fixing are released, thereby effectively preventing workers or non-workers from putting their hands into the mixing tank 2016 and ensuring operational safety. Furthermore, in this invention, a shielding mesh plate 2010 matching the structural dimensions of each empty area on both sides of the two horizontal plates 207 is fixedly installed. The installation of these two shielding mesh plates 2010 prevents workers or non-workers from inserting their hands into the mixing tank 2016 through the empty areas on both sides of the two horizontal plates 207. Additionally, the shielding mesh plates 2010 allow workers to observe the solid waste solidifying agent raw materials inside the mixing tank 2016 through the mesh openings. The mixing process is monitored; the pressure stud 108, which passes through mating holes a2020 and b2022, also limits and fixes the mixing tank 2, preventing it from rotating before the limiting and fixing is released; furthermore, when it is necessary to rotate and unfold the front baffle 2012 and the rear baffle 2013, the operator needs to rotate the pressure stud 108 to the left along the threaded through hole 107 so that the pressure stud 108 disengages from mating holes a2020 and b2022. Workers can rotate and unfold the front cover 2012 and the rear cover 2013 without any obstruction. However, since the pressure stud 108 is separated from the button of the motor start / stop switch 2023 which uses a tactile switch, the motor 3 will also be in the off state. This ensures that when workers rotate and unfold the front cover 2012 and the rear cover 2013 to add raw materials or pour the prepared solid waste solidifying agent, the motor 3 will not be suddenly started due to accidental contact, which could cause physical injury and ensure operational safety.

[0049] After the solid waste curing agent raw material in the mixing tank 2016 is stirred, the pressing stud 108 is rotated to the left along the threaded through hole 107 so that the pressing stud 108 disengages from the mating hole a2020 and the mating hole b2022, and disengages from the pressing groove 206. At this time, the operator can rotate and unfold the front cover plate 2012 to expose the front half of the mixing tank 2016. Then the operator can grasp the handle 203 to rotate the mixing tank 2 along the rotating hole 106 through the rotational engagement of the annular rotating groove 204 and the rotating hole 106, so as to tilt the mixing tank 2 and allow the solid waste curing agent in the mixing tank 2016 to flow out through the guide attachment protrusion 202, thus completing the preparation operation.

[0050] Curing and testing of solid waste solidifying agents:

[0051] We plan to select carbide slag (C), fly ash (F), blast furnace slag (G), and phosphogypsum (P) as curing agents, and prepare neat cement pastes according to the mass ratios in Table 1. Unconfined compressive strength and permeability tests will then be conducted. Ordinary Portland cement (grade PO 42.5) will be used to simultaneously prepare neat cement paste samples as control samples.

[0052] The sample preparation plan for the curing agent slurry is shown in Table 1:

[0053] Table 1. Curing Agent and Neat Paste Sample Preparation Scheme, Curing Conditions, Curing Agent Ratio, Water-Cement Ratio, Curing Time / d, Curing Environment, CGF (mass ratio) 1 Standard Curing C:G:F=40:40:20; C:G:F=40:600; C:G:F=60:40:0; 0.43 C:G:F=40:50:10; C:G:F=50:50:0; C:G:F=50:40:10; 7 C:G:F=50:30:20; C:G:F=60:30:10; C:G:F=60:20:20; 28 C:G:F=70:30:0; C:G:F=70:20:10; C:G:F=70:10:20; 90 C:G:F:P=40:40:20:10

[0054] Determination of basic physicochemical properties of solid waste used in the experiment:

[0055] Moisture content test, specific gravity test and particle size analysis test of carbide slag (C), fly ash (F), blast furnace slag (G) and phosphogypsum (P) (refer to the "Standard for Geotechnical Testing Methods" (GB / T 50123-2019)).

[0056] Several types of CGFP pulp preparation and PO 42.5 pulp preparation;

[0057] Based on this invention, after the solid waste solidifying agent is prepared by stirring, it is placed into an unconfined compression test mold, and the time is controlled within 5 minutes. Then, three parallel samples are made for each group of samples. The sample preparation scheme of the neat pulp is shown in Table 1;

[0058] Standard maintenance:

[0059] The prepared CGF cement paste and cement paste were cured at 20℃±2℃ and humidity above 95%.

[0060] Unconfined compressive strength test:

[0061] Unconfined compressive strength tests were conducted on specimens that had reached the required age. The unconfined compressive strength testing apparatus was strain-controlled, with a loading rate set at 1% / min and a maximum load of 30kN.

[0062] The strength of the hardener-cured cement paste is greater than or equal to the strength of the cement paste.

[0063] The above experiments yielded different strengths of neat cement paste and cement paste. The strengths of the curing agent and cement paste were then determined and screened. Curing agents whose strengths were all superior to those of cement paste were selected as the developed CGFP.

[0064] Solidified soil samples were prepared using the developed CGF, and cement-solidified soil samples were prepared simultaneously. Permeability tests were conducted to clarify the permeability characteristics of CGF-solidified soil and cement-solidified soil, as shown in Table 2.

[0065] Table 2. Sample Preparation Scheme for CGFP-Solidified Soil and Cement-Solidified Soil Curing Conditions for Soil to be Solidified Type of Solidifying Agent Admixture Ratio / % Curing Time / d Curing Environment Excavated Soil Sample (SC) Backfill Soil Sample (NS) 1 Standard Curing CGFP .O 4 2.5 127 18 28 24

[0066] Here, the cement admixture ratio and CGFP admixture ratio are defined as follows:

[0067] Cement admixture ratio = mass of cement (dry powder) / mass of soil to be cured (dry soil);

[0068] CGFP incorporation ratio = mass of CGFP (dry powder) / mass of soil to be solidified (dry soil);

[0069] CGFP sample preparation, PO 42.5 sample preparation:

[0070] Solidified coarse-grained soil samples were prepared using the developed CGFP and P∙O 42.5, respectively.

[0071] Standard curing of solidified soil:

[0072] After the prepared CGFP-stabilized soil and cement-stabilized soil were cured under standard conditions (20℃±2℃, humidity above 95%) for 28 days, a permeability test was carried out.

[0073] Permeation test:

[0074] Permeability tests were conducted on CGFP-stabilized soil samples and cement-stabilized soil samples that had reached the specified age.

[0075] The permeability coefficients of the CGFP and cement-constructed waterstop curtains, as determined by on-site drilling and water injection tests, were 5.67×10-7 cm / s and 7.56×10-7 cm / s, respectively, both meeting the design requirements. The permeability coefficient of the CGFP waterstop curtain was less than that of the cement, indicating excellent water-stopping effect.

[0076] This invention relates to a solid waste curing agent formulated from carbide slag, mineral powder, fly ash, and phosphogypsum in a specific ratio. In actual construction, only simple mixing is required; no additional processing is needed. However, the material cost is only 1 / 2 to 1 / 3 of that of cement, thus demonstrating excellent economic and environmental benefits.

[0077] The following points should be noted in this article:

[0078] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0079] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0080] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A solid waste solidification agent preparation system for construction, comprising a mixing tank (2), wherein a mixing groove (2016) is provided on the top surface of the mixing tank (2), and a flow-guiding attachment protrusion (202) connected to the mixing groove (2016) is provided on the top side of the outer periphery of the mixing tank (2); two horizontal plates (207) are fixedly installed on the top surface of the mixing tank (2) in a front-to-back symmetrical manner, and two connecting plates (208) are fixedly connected between the two horizontal plates (207) in a left-to-right symmetrical manner; a set of motors (3) are fixedly installed on the top surfaces of the two horizontal plates (207) and the top surfaces of the two connecting plates (208) through stud nuts (209), and the shaft of the motor (3) passes through the empty area between the two horizontal plates (207) and the two connecting plates (208) located inside the mixing groove (2016), and a stirring blade (301) is fixedly installed on the shaft of the motor (3), characterized in that, Two rotating seats (2011) are fixedly installed symmetrically on the top surfaces of the two horizontal plates (207); a rectangular front shield (2012) is provided in front of the front horizontal plate (207), and two rotating seats (2011) are fixedly installed symmetrically on the rear side of the top surface of the front shield (2012). The front horizontal plate (207) and the front shield (2012) are connected by rotating seats (2011) via a rotating shaft. The front baffle (2012) is rotated and connected; when the bottom surface of the front baffle (2012) is in contact with the top surface of the mixing tank (2), the front baffle (2012) covers the front half of the top opening of the mixing tank (2016); a rectangular baffle (2013) is provided behind the horizontal plate (207) on the rear side, and two rotating seats (2011) are also fixedly installed on the front side of the top of the rear baffle (2013) in a symmetrical manner. The horizontal plate (207) and the rear baffle plate (2013) are also rotatably connected by a rotating seat (2011) connected via a rotating shaft; when the bottom surface of the rear baffle plate (2013) is in contact with the top surface of the mixing tank (2), the rear baffle plate (2013) covers the rear half of the top opening of the mixing tank (2016); a baffle mesh plate matching the structural size of the empty area is fixedly installed in the empty areas on both sides of the two horizontal plates (207). 2010); A rectangular locking block (205) is fixedly installed on the upper left side of the outer periphery of the mixing tank (2). A circular groove (206) is provided on the left end face of the locking block (205); A set of motor start-stop switches (2023) is fixedly installed on the right side of the inner end of the groove (206). The motor start-stop switches (2023) are touch switches, and the button end of the motor start-stop switches (2023) faces to the left. The locking block (205) has a slot b (2018) with a rectangular groove structure on the right side of its bottom end face. The slot b (2018) passes through the front end face and the rear end face of the locking block (205). The front extension plate (2015) with a rectangular plate structure is fixedly installed on the rear left side of the bottom end face of the front baffle (2012). The front insertion block (2019) with a rectangular block structure is fixedly installed on the rear end face of the front extension plate (2015). The front insertion block (2019) has a mating hole a (2020) with a diameter that passes through the left end face and the right end face of the front insertion block (2019). The mating hole a (2020) is a round hole and the diameter of the mating hole a (2020) is the same as the diameter of the pressing groove (206). The locking block (205) has a slot a (2017) with a rectangular groove structure on the left side of its bottom end face. The slot a (2017) passes through the front end face and the rear end face of the locking block (205). The rear cover plate (2013) has a rear extension plate (2014) with a rectangular plate structure fixedly installed on the front left side of its bottom end face. The rear extension plate (2014) has a rear insert block (2021) with a rectangular block structure fixedly installed on the front end face of its rear extension plate (2014). The rear insert block (2021) has a mating hole b (2022) with a diameter that passes through the left end face and the right end face of its rear insert block (2021). The mating hole b (2022) is a round hole and its diameter is consistent with the diameter of the pressing groove (206). The mixing tank (2) is provided with a base (1) in the shape of a rectangular block below it. A side support block (101) in the shape of a rectangular block is fixedly installed on the left and right sides of the top surface of the base (1). A threaded through hole (107) is provided above the left end face of the side support block (101) located on the left side, and the threaded through hole (107) and the pressing groove (206) are coaxial. A pressing stud (108) is installed in the threaded through hole (107), and a knob head (104) is fixedly installed on the left end face of the pressing stud (108) and is coaxial with it. When the pressing stud (108) rotates to the right along the threaded through hole (107) until the right end face of the knob head (104) contacts the left end face of the side support block (101) located on the left side, the right end face of the pressing stud (108) presses against the button end of the motor start / stop switch (2023), and the motor start / stop switch (2023) is in the pressed start state.

2. The solid waste solidification agent preparation system for building construction according to claim 1, characterized in that, When the bottom surface of the front baffle (2012) is in contact with the top surface of the mixing tank (2), the rear end surface of the front extension plate (2015) is in contact with the front end surface of the locking block (205). At this time, the front insert block (2019) is inserted into the slot b (2018), and the mating hole a (2020) and the pressure groove (206) are in a coaxial state.

3. The all-solid waste solidification agent preparation system for building construction according to claim 2, characterized in that, When the bottom surface of the rear baffle (2013) is in contact with the top surface of the mixing tank (2), the front surface of the rear extension plate (2014) is in contact with the rear surface of the locking block (205). At this time, the rear insert block (2021) is inserted into the slot a (2017), and the mating hole b (2022) and the pressing groove (206) are in a coaxial state.

4. The solid waste solidification agent preparation system for building construction according to claim 3, characterized in that, Each of the two side support blocks (101) has a rotating hole (106) on its left and right ends. A rotating auxiliary protrusion (201) with a circular block structure is fixedly installed on the left and right sides of the outer periphery of the mixing tank (2). The diameter of the rotating auxiliary protrusion (201) is larger than the diameter of the rotating hole (106). An annular rotating groove (204) is opened on the outer periphery of each of the two rotating auxiliary protrusions (201). The two annular rotating grooves (204) are rotatably connected to the two rotating holes (106) respectively. Three grips (203) are fixedly installed on the rear side of the outer periphery of the mixing tank (2) in a uniform vertical distribution.

5. The solid waste solidification agent preparation system for building construction according to claim 4, characterized in that, A control box (102) is fixedly installed on the left end face of the side support block (101) located on the left side. The motor start / stop switch (2023) and the motor (3) are electrically connected to the control box (102). When the motor start / stop switch (2023) is in the pressed start state, the motor start / stop switch (2023) sends a feedback signal to the control box (102), and the control box (102) controls the motor (3) to start. A rectangular plate mounting auxiliary plate (103) is fixedly installed on the lower side of the side end face of each of the two side support blocks (101). The top surface of each of the two mounting auxiliary plates (103) is provided with two mounting insertion holes (105) that penetrate through the bottom surface of each plate.

6. The method for proportioning the solid waste solidifier prepared by the solid waste solidifier preparation system for building construction as described in any one of claims 1-5, characterized in that, Includes the following steps: Step 1. Prepare the raw materials according to the mass ratio. The raw material ratio is as follows: Calcium carbide slag 40-70%; fly ash 10-20%; blast furnace slag 40-50%; phosphogypsum 0-10%; the remainder is purified water; Step 2. Rotate the unfolded cover plate (2013) to expose the rear half of the opening end of the mixing tank (2016). Add carbide slag, blast furnace slag, fly ash, phosphogypsum and pure water into the mixing tank (2016) from the rear half of the opening end of the mixing tank (2016) according to the proportion, so that they can be mixed in the subsequent process. Step 3. Rotate and close the front baffle (2012) and the rear baffle (2013) so that the front insert (2019) is limited to be inserted into the slot b (2018) and the rear insert (2021) is limited to be inserted into the slot a (2017). Then, rotate the pressing stud (108) to the right along the threaded through hole (107) so that the right end of the pressing stud (108) passes through the mating hole a (2020) and the mating hole b (2022) to limit and fix the front baffle (2012) and the rear baffle (2013) in the closed state. Before the limitation and fixation are released, the front baffle (2012) and the rear baffle (2013) cannot be rotated and unfolded, thus ensuring construction safety. Step 4. Rotate the pressing stud (108) to the right along the threaded through hole (107) until the pressing stud (108) contacts the button end of the motor start / stop switch (2023), thereby controlling the motor (3) to start and drive the stirring blade (301) to stir and mix the solid waste solidifying agent raw materials in the mixing tank (2016); Step 5. After the solid waste curing agent raw material in the mixing tank (2016) is stirred, rotate the pressing stud (108) to the left along the threaded through hole (107) so that the pressing stud (108) is disengaged from the mating hole a (2020), the mating hole b (2022) and the pressing groove (206), and release the limiting fixation of the front baffle (2012) so that the front baffle (2012) can be rotated and unfolded to expose the front half of the mixing tank (2016). Then, grasp the handle (203) to rotate the mixing tank (2) along the rotation hole (106) so that the mixing tank (2) is tilted so that the solid waste curing agent in the mixing tank (2016) can be guided out through the guide attachment protrusion (202) to complete the preparation operation.

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