High-activity admixture and preparation method thereof

Abstract

Belonging to the technical field of admixtures, the invention discloses a high activity admixture, which is prepared from the following raw materials by weight: 30-50 parts of lithium slag, 10-20 parts of concrete building slag, 10-30 parts of furnace slag, 10-20 parts of water granulated slag and a grinding aid activator. The invention also discloses a preparation method of the high-activity admixture. The high-activity admixture prepared from the lithium slag, the concrete building slag, the furnace slag, the water granulated slag and the grinding aid activator can replace cement to become an admixture in concrete, multiple solid waste raw materials can be recycled at the same time, energy is saved, waste is utilized, meanwhile, emission of carbon dioxide can be greatly reduced, and cost reduction and efficiency improvement are achieved for enterprises.

Description

Technical Field

[0001] The invention belongs to the technical field of admixtures, and in particular relates to a high-activity admixture and a preparation method thereof. Background Art

[0002] As one of the most commonly used materials in construction projects, the performance of concrete directly affects the quality and durability of the project.

[0003] Cement is one of the most important cementitious materials in concrete, but it has high carbon emissions and high energy consumption during the production process. It also emits sulfur dioxide and nitrogen oxides, causing environmental pollution. Therefore, developing highly active admixtures to replace part of the cement is an important way for the concrete industry to achieve energy conservation and reduce environmental pollution.

[0004] In view of this, a high-activity admixture and a preparation method thereof are designed to solve the above problems. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a high-activity admixture and a preparation method thereof, which can simultaneously recycle a variety of solid waste raw materials, save energy and utilize waste, and can also greatly reduce carbon dioxide emissions, thereby reducing costs and increasing efficiency for enterprises.

[0006] Another object of the present invention is to provide a method for preparing a high-activity admixture.

[0007] To achieve the above object, the present invention provides the following technical solution: a high-activity admixture, comprising the following raw materials in parts by weight:

[0008] 30-50 parts of lithium slag, 10-20 parts of concrete slag, 10-30 parts of furnace slag, 10-20 parts of water slag and grinding aid activator.

[0009] Furthermore, the water content of the lithium slag is less than 1.0%.

[0010] Furthermore, the grinding aid activator comprises the following raw materials in parts by weight:

[0011] 30-50 parts of grinding aid, 30-40 parts of activator, 20-30 parts of modifier and 20-40 parts of water.

[0012] Furthermore, the grinding aid is one or more of polymeric polyols, polymeric alcohol amines, triethanolamine and triisopropanolamine.

[0013] Furthermore, the activator is one or more of Glauber's salt, gypsum and chloride salt.

[0014] Furthermore, the modifier is one or more of sulfate, nitrate, hydroxycarboxylic acid and organic phosphonic acid.

[0015] Furthermore, the method for preparing the highly active admixture comprises the following steps:

[0016] S1: Place the lithium slag in an oven and dry it until the moisture content is less than 1.0%, which is material A;

[0017] S2: Place the concrete slag in a crusher to crush it into aggregates with a particle size of less than 10 mm, and then place it in a mixer for homogenization to obtain material B;

[0018] S3: placing the slag in a mixer for pre-homogenization to obtain C material;

[0019] S4: placing the slag in a crusher and crushing it into slag with a particle size of less than 10 mm, which is material D;

[0020] S5: Put 30-50 parts of grinding aid, 30-40 parts of activator, 20-30 parts of modifier and 20-40 parts of water into a mixer and stir evenly to obtain material E;

[0021] S6: Take 30-50 parts of material A, 10-20 parts of material B, 10-30 parts of material C and 10-20 parts of material D and put them in a mixer for pre-homogenization. Transport the pre-homogenized mixture to a ball mill through a conveyor belt. Add material E dropwise during the transportation process and ball-mill until the concentration reaches 600±50㎡ / kg, which is a high-activity admixture.

[0022] Furthermore, in step S1, the drying temperature of the oven is 105°C.

[0023] Furthermore, in step S5, the stirring speed of the stirrer is 300 r / min, and the stirring time is 30 min.

[0024] Furthermore, in step S6, the rate of dropping material E is 600 ml / min.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The high-activity admixture prepared by the present invention from lithium slag, concrete construction slag, furnace slag, water slag and grinding aid activator can replace cement as an admixture in concrete. It can recycle and reuse a variety of solid waste raw materials at the same time, save energy and utilize waste, and can also greatly reduce carbon dioxide emissions, thereby reducing costs and increasing efficiency for enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a flow chart of the method for preparing the highly active admixture. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in 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 creative work are within the scope of protection of the present invention.

[0029] Embodiment 1

[0030] See also Figure 1 The present invention provides the following technical solution: a high-activity admixture, comprising the following raw materials in parts by weight:

[0031] 30-50 parts of lithium slag, 10-20 parts of concrete slag, 10-30 parts of furnace slag, 10-20 parts of water slag, 30-50 parts of polymer polyol, 30-40 parts of sodium sulfate, 20-30 parts of sulfate and 20-40 parts of water.

[0032] Specifically, the water content of the lithium slag is <1.0%.

[0033] A method for preparing a high-activity admixture comprises the following steps:

[0034] S1: Place the lithium slag in an oven and dry it at 105°C until the moisture content is less than 1.0%, which is material A;

[0035] S2: Place the concrete slag in a crusher to crush it into aggregates with a particle size of less than 10 mm, and then place it in a mixer for homogenization to obtain material B;

[0036] S3: placing the slag in a mixer for pre-homogenization to obtain C material;

[0037] S4: placing the slag in a crusher and crushing it into slag with a particle size of less than 10 mm, which is material D;

[0038] S5: 30-50 parts of polymer polyol, 30-40 parts of sodium sulfate, 20-30 parts of sulfate and 20-40 parts of water are placed in a mixer, and stirred at a stirring speed of 300 r / min for 30 minutes until the mixture is uniformly stirred to obtain material E;

[0039] S6: Take 30-50 parts of material A, 10-20 parts of material B, 10-30 parts of material C and 10-20 parts of material D and put them in a mixer for pre-homogenization. Transport the pre-homogenized mixture to a ball mill through a conveyor belt. Add material E dropwise at a rate of 600 ml / min during the transportation process. Ball mill until it reaches 600±50㎡ / kg, which is a high-activity admixture.

[0040] Embodiment 2

[0041] See also Figure 1The present invention provides the following technical solution: a high-activity admixture, comprising the following raw materials in parts by weight:

[0042] 30-50 parts of lithium slag, 10-20 parts of concrete slag, 10-30 parts of furnace slag, 10-20 parts of water slag, 30-50 parts of polymer alcohol amine, 30-40 parts of gypsum, 20-30 parts of nitrate and 20-40 parts of water.

[0043] Specifically, the water content of the lithium slag is <1.0%.

[0044] A method for preparing a high-activity admixture comprises the following steps:

[0045] S1: Place the lithium slag in an oven and dry it at 105°C until the moisture content is less than 1.0%, which is material A;

[0046] S2: Place the concrete slag in a crusher to crush it into aggregates with a particle size of less than 10 mm, and then place it in a mixer for homogenization to obtain material B;

[0047] S3: placing the slag in a mixer for pre-homogenization to obtain C material;

[0048] S4: placing the slag in a crusher and crushing it into slag with a particle size of less than 10 mm, which is material D;

[0049] S5: 30-50 parts of polyolamine, 30-40 parts of gypsum, 20-30 parts of nitrate and 20-40 parts of water are placed in a mixer, and stirred at a stirring speed of 300 r / min for 30 minutes until the mixture is uniformly stirred to obtain material E;

[0050] S6: Take 30-50 parts of material A, 10-20 parts of material B, 10-30 parts of material C and 10-20 parts of material D and put them in a mixer for pre-homogenization. Transport the pre-homogenized mixture to a ball mill through a conveyor belt. Add material E dropwise at a rate of 600 ml / min during the transportation process. Ball mill until it reaches 600±50㎡ / kg, which is a high-activity admixture.

[0051] Embodiment 3

[0052] See also Figure 1 The present invention provides the following technical solution: a high-activity admixture, comprising the following raw materials in parts by weight:

[0053] 30-50 parts of lithium slag, 10-20 parts of concrete slag, 10-30 parts of furnace slag, 10-20 parts of water slag, 30-50 parts of triethanolamine, 30-40 parts of chloride salt, 20-30 parts of hydroxycarboxylic acid and 20-40 parts of water.

[0054] Specifically, the water content of the lithium slag is <1.0%.

[0055] A method for preparing a high-activity admixture comprises the following steps:

[0056] S1: Place the lithium slag in an oven and dry it at 105°C until the moisture content is less than 1.0%, which is material A;

[0057] S2: Place the concrete slag in a crusher to crush it into aggregates with a particle size of less than 10 mm, and then place it in a mixer for homogenization to obtain material B;

[0058] S3: placing the slag in a mixer for pre-homogenization to obtain C material;

[0059] S4: placing the slag in a crusher and crushing it into slag with a particle size of less than 10 mm, which is material D;

[0060] S5: 30-50 parts of triethanolamine, 30-40 parts of chloride salt, 20-30 parts of hydroxycarboxylic acid and 20-40 parts of water are placed in a mixer, and stirred at a stirring speed of 300 r / min for 30 minutes until the mixture is uniformly stirred to obtain material E;

[0061] S6: Take 30-50 parts of material A, 10-20 parts of material B, 10-30 parts of material C and 10-20 parts of material D and put them in a mixer for pre-homogenization. Transport the pre-homogenized mixture to a ball mill through a conveyor belt. Add material E dropwise at a rate of 600 ml / min during the transportation process. Ball mill until it reaches 600±50㎡ / kg, which is a high-activity admixture.

[0062] Embodiment 4

[0063] See also Figure 1 The present invention provides the following technical solution: a high-activity admixture, comprising the following raw materials in parts by weight:

[0064] 30-50 parts of lithium slag, 10-20 parts of concrete slag, 10-30 parts of furnace slag, 10-20 parts of water slag, 30-50 parts of triisopropanolamine, 30-40 parts of chloride salt, 20-30 parts of organic phosphonic acid and 20-40 parts of water.

[0065] Specifically, the water content of the lithium slag is <1.0%.

[0066] A method for preparing a high-activity admixture comprises the following steps:

[0067] S1: Place the lithium slag in an oven and dry it at 105°C until the moisture content is less than 1.0%, which is material A;

[0068] S2: Place the concrete slag in a crusher to crush it into aggregates with a particle size of less than 10 mm, and then place it in a mixer for homogenization to obtain material B;

[0069] S3: placing the slag in a mixer for pre-homogenization to obtain C material;

[0070] S4: placing the slag in a crusher and crushing it into slag with a particle size of less than 10 mm, which is material D;

[0071] S5: 30-50 parts of triisopropanolamine, 30-40 parts of chloride salt, 20-30 parts of organic phosphonic acid and 20-40 parts of water are placed in a mixer, and stirred at a stirring speed of 300 r / min for 30 minutes until the mixture is uniformly stirred to obtain material E;

[0072] S6: Take 30-50 parts of material A, 10-20 parts of material B, 10-30 parts of material C and 10-20 parts of material D and put them in a mixer for pre-homogenization. Transport the pre-homogenized mixture to a ball mill through a conveyor belt. Add material E dropwise at a rate of 600 ml / min during the transportation process. Ball mill until it reaches 600±50㎡ / kg, which is a high-activity admixture.

[0073] 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 highly active admixture, characterized in that: The invention comprises the following raw materials in parts by weight: 30-50 parts of lithium slag, 10-20 parts of concrete slag, 10-30 parts of furnace slag, 10-20 parts of water slag and grinding aid activator.

2. A highly active admixture according to claim 1, characterized in that: The water content of the lithium slag is less than 1.0%.

3. A highly active admixture according to claim 1, characterized in that: The grinding aid activator comprises the following raw materials in parts by weight: 30-50 parts of grinding aid, 30-40 parts of activator, 20-30 parts of modifier and 20-40 parts of water.

4. A highly active admixture according to claim 3, characterized in that: The grinding aid is one or more of polymeric polyols, polymeric alcohol amines, triethanolamine and triisopropanolamine.

5. A highly active admixture according to claim 3, characterized in that: The activator is one or more of sodium sulfate, gypsum and chloride salt.

6. A highly active admixture according to claim 3, characterized in that: The modifier is one or more of sulfate, nitrate, hydroxycarboxylic acid and organic phosphonic acid.

7. A method for preparing a high-activity admixture according to claims 1-6, characterized in that: The following steps are involved: S1: Place the lithium slag in an oven and dry it until the moisture content is less than 1.0%, which is material A; S2: Place the concrete slag in a crusher to crush it into aggregates with a particle size of less than 10 mm, and then place it in a mixer for homogenization to obtain material B; S3: placing the slag in a mixer for pre-homogenization to obtain C material; S4: placing the slag in a crusher and crushing it into slag with a particle size of less than 10 mm, which is material D; S5: Put 30-50 parts of grinding aid, 30-40 parts of activator, 20-30 parts of modifier and 20-40 parts of water into a mixer and stir evenly to obtain material E; S6: Take 30-50 parts of material A, 10-20 parts of material B, 10-30 parts of material C and 10-20 parts of material D and put them in a mixer for pre-homogenization. Transport the pre-homogenized mixture to a ball mill through a conveyor belt. Add material E dropwise during the transportation process and ball-mill until the concentration reaches 600±50㎡ / kg, which is a high-activity admixture.

8. The method for preparing a high-activity admixture according to claim 7, characterized in that: In step S1, the drying temperature of the oven is 105°C.

9. The method for preparing a high-activity admixture according to claim 7, characterized in that: In step S5, the stirring speed of the stirrer is 300 r / min, and the stirring time is 30 min.

10. The method for preparing a high-activity admixture according to claim 7, characterized in that: In step S6, the rate of dropping material E is 600 ml / min.

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