CN113182055A - Production method of dry-mixed mortar capable of dynamically adjusting machine-made sand gradation - Google Patents
Production method of dry-mixed mortar capable of dynamically adjusting machine-made sand gradation Download PDFInfo
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- CN113182055A CN113182055A CN202110543211.XA CN202110543211A CN113182055A CN 113182055 A CN113182055 A CN 113182055A CN 202110543211 A CN202110543211 A CN 202110543211A CN 113182055 A CN113182055 A CN 113182055A
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- Prior art keywords
- sand
- machine
- made sand
- dry
- mixed mortar
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/26—Carbonates
- C04B14/28—Carbonates of calcium
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
Abstract
The invention provides a dry-mixed mortar production method for dynamically adjusting the gradation of machine-made sand, which comprises the following steps: s1, preparing machine-made sand; s2, screening by machine-made sand; s3, collecting the sand making powder; s4, storing machine-made sand; s5, analyzing machine-made sand data; s6, preparing dry-mixed mortar; s7, analyzing dry-mixed mortar data; and S8, dynamic grading adjustment. The finished product dry-mixed mortar machine sand grading particle size distribution data made according to the same batch of machine-made sand is compared with the product production formula, and surplus material proportion is increased to a large extent, so that the product can meet the quality requirement, various materials in the process of producing machine-made sand by crushing limestone can be fully utilized, and the condition that a machine-made sand bin with a certain specification is full is avoided, thereby improving the production efficiency and saving the production resources.
Description
Technical Field
The invention relates to the technical field of dry-mixed mortar production, in particular to a dry-mixed mortar production method for dynamically adjusting the mechanical sand gradation.
Background
More than half of main raw materials of the premixed dry-mixed mortar are construction sand, but with the increasing shortage and price rise of natural river sand resources, the phenomenon of excessive mining occurs in some areas, which not only damages the environment, but also endangers river stability and embankment safety. Therefore, the search for alternative products with energy conservation, consumption reduction and environmental protection is urgent, and the machine-made sand is produced by mechanically crushing rocks, so that natural resources can be saved, the strategic requirements of the current sustainable development are completely met, and the method becomes the trend of producing the ready-mixed mortar aggregate.
If the pre-mixed dry-mixed mortar is produced by using the machine-made sand, the grading of the machine-made sand has great influence on the performance of the finished mortar, and if the production is carried out in the same proportion all the time, the grading of the machine-made sand generated by crushing the machine-made sand is uncontrollable, so that the quantity of the machine-made sand with different grading after screening cannot be controlled, the machine-made sand bin with a certain specification is easily full, the raw material is required to be transferred, the production efficiency is greatly reduced, and the production resources are wasted.
Disclosure of Invention
The invention aims to provide a method for producing dry-mixed mortar by dynamically adjusting the gradation of machine-made sand, which overcomes the defects in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the application discloses a dry-mixed mortar production method for dynamically adjusting machine-made sand gradation, which comprises the following steps:
s1, machine-made sand preparation: crushing and shaping limestone to obtain machine-made sand;
s2, machine-made sand screening: screening the obtained machine-made sand into four specifications of coarse, medium, fine and extra-fine according to the fineness modulus;
s3, collecting sand making powder: collecting the sand making powder generated in the step S1 and the step S2 by a dust collecting apparatus;
s4, storing machine-made sand: storing the machine-made sand and the sand-making powder in corresponding sand bins and powder bins according to the specification of the machine-made sand;
s5, analyzing machine-made sand data: detecting the gradation and the powder content of the machine-made sand in each sand silo to obtain the data of the machine-made sand in the sand silo;
s6, preparing dry-mixed mortar: according to the machine-made sand data in the sand warehouse of each specification and the product formula to be produced, respectively metering sand making powder, extra-fine machine-made sand, fine sand machine-made sand, medium sand machine-made sand, coarse sand machine-made sand, cement and various additives, and adding stirring equipment to mix and prepare dry-mixed mortar;
s7, dry-mixed mortar data analysis: sampling and screening the dry-mixed mortar prepared in the S5, and respectively measuring the machine-made sand and powder with different particle sizes to obtain the component and machine-made sand grading particle size distribution data in the product;
s8, dynamic gradation adjustment: and dynamically adjusting the machine-made sand dosage with different gradations according to the comparison of the machine-made sand gradation particle size distribution data of the finished dry-mixed mortar with the product production formula.
Preferably, in the step S2, screening is performed according to GB/T14684 construction sand standard, the sand making of a coarse sand machine is 3.7 mm-3.1 mm, the sand making of a medium sand machine is 3.1 mm-2.3 mm, the sand making of a fine sand machine is 2.3 mm-1.6 mm, the sand making of an extra-fine sand machine is 1.6 mm-0.7 mm, and the sand making powder in the step S3 is 0.7 mm-0.
Preferably, in step S4, level gauges capable of dynamically monitoring the capacity of the sand silo are installed inside the sand silo and the powder silo.
Preferably, the operation of step S7 is as follows: the method comprises the following steps of collecting powder in a sample by using negative pressure screening equipment, sequentially passing the sample through a plurality of screens, wherein the screens sequentially comprise the following steps: the method comprises the following steps of screening a screen with an aperture of 2.5mm, a screen with an aperture of 1.25mm, a screen with an aperture of 0.63mm, a screen with an aperture of 0.315mm, a screen with an aperture of 0.16mm and a screen with an aperture of 0.08mm respectively to obtain machine-made sand with the particle sizes of 4.75 mm-2.36 mm, 2.36 mm-1.18 mm, 1.18 mm-0.6 mm, 0.6 mm-0.3 mm, 0.3 mm-0.15 mm and 0.15 mm-0.075 mm, and measuring the machine-made sand and powder with the particle sizes to obtain the powder amount and the machine-made sand grading particle size distribution data in the product.
Preferably, the dry-mixed mortar includes, but is not limited to, masonry mortar, plastering mortar, floor mortar and special mortar.
The invention has the beneficial effects that: compared with the prior art, the finished product dry-mixed mortar machine sand grading particle size distribution data made according to the same batch of machine-made sand is compared with the product production formula, and redundant material proportion is increased to a large extent, so that the product can meet the quality requirement, various materials in the process of producing machine-made sand by crushing limestone seeds can be fully utilized, and the condition that a machine-made sand bin with a certain specification is full is avoided, thereby improving the production efficiency and saving the production resources.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a process flow diagram of a dry-mixed mortar production method for dynamically adjusting the mechanical sand gradation according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a method for producing a dry-mixed mortar with dynamically adjusted machine-made sand gradation, including the following steps: s1, machine-made sand preparation: crushing and shaping limestone to obtain machine-made sand; s2, machine-made sand screening: screening according to GB/T14684 construction sand standard, wherein sand making of a coarse sand machine is 3.7 mm-3.1 mm, sand making of a medium sand machine is 3.1 mm-2.3 mm, sand making of a fine sand machine is 2.3 mm-1.6 mm, sand making of an extra-fine sand machine is 1.6 mm-0.7 mm, sand making powder in the step S3 is 0.7 mm-0, and the obtained machine-made sand is classified into four specifications of coarse, medium, fine and extra-fine according to fineness modulus; s3, collecting sand making powder: collecting the sand making powder generated in the step S1 and the step S2 by a dust collecting apparatus; s4, storing machine-made sand: storing the machine-made sand and the sand-making powder in corresponding sand bins and powder bins according to the specifications of the machine-made sand, wherein material level meters capable of dynamically monitoring the capacity of the sand bins are arranged in the sand bins and the powder bins in the step S4; s5, analyzing machine-made sand data: detecting the gradation and the powder content of the machine-made sand in each sand silo to obtain the data of the machine-made sand in the sand silo; s6, preparing dry-mixed mortar: according to the machine-made sand data in the sand warehouse of each specification and the product formula to be produced, respectively metering sand making powder, extra-fine machine-made sand, fine sand machine-made sand, medium sand machine-made sand, coarse sand machine-made sand, cement and various additives, and adding stirring equipment to mix and prepare dry-mixed mortar; s7, dry-mixed mortar data analysis: sampling and screening the dry-mixed mortar prepared in the step S5, collecting powder in a sample by using negative pressure screening equipment, and sequentially passing the sample through a plurality of screens, wherein the screens sequentially comprise: screening a screen with the aperture of 2.5mm, a screen with the aperture of 1.25mm, a screen with the aperture of 0.63mm, a screen with the aperture of 0.315mm, a screen with the aperture of 0.16mm and a screen with the aperture of 0.08mm respectively to obtain machine-made sand with the particle sizes of 4.75 mm-2.36 mm, 2.36 mm-1.18 mm, 1.18 mm-0.6 mm, 0.6 mm-0.3 mm, 0.3 mm-0.15 mm and 0.15 mm-0.075 mm, and metering the machine-made sand and powder with each particle size to obtain the powder amount and the machine-made sand grading particle size distribution data in the product; s8, dynamic gradation adjustment: and dynamically adjusting the machine-made sand dosage with different gradations according to the comparison of the machine-made sand gradation particle size distribution data of the finished dry-mixed mortar with the product production formula.
Taking the raw material as an example, which is a batch of wet and dusty limestone, the raw material is crushed, shaped, screened and dust-collected by machine-made sand, and is respectively converted into: the method comprises the following steps of preparing sand powder, preparing sand by an extra-fine machine, preparing sand by a fine sand machine, preparing sand by a medium sand machine and preparing sand by a coarse sand machine, and 5 transition products, wherein the raw materials are wet and contain much dust, so that the powder content of the machine-made sand materials in the extra-fine machine, the fine sand machine, the medium sand machine and the coarse sand machine is detected, and the powder content of the machine-made sand materials in 4 sand bins is detected, and generally the detected powder content floats upwards by 3-5%. And then, metering all the materials for producing the pre-mixed mortar, adjusting and reducing the using amount of the sand making powder in the metering process because the powder content of all the machine-made sand in the machine-made sand bin is increased, and feeding all the metered raw materials into a stirring device for stirring to obtain the finished product of the pre-mixed dry-mixed mortar. The raw material proportion of the produced finished product premixed dry-mixed mortar is detected, detection data are analyzed, the content of the prepared sand powder is controlled to reach the maximum limit meeting the product quality, and various materials in the process of producing machine-made sand by crushing limestone seeds are fully utilized. When the sand making powder is too large to screen the full load of the powder bin, the product formula can be switched in time to produce special mortar such as putty powder with high powder content.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A production method of dry-mixed mortar for dynamically adjusting the gradation of machine-made sand is characterized by comprising the following steps: s1, machine-made sand preparation: crushing and shaping limestone to obtain machine-made sand; s2, machine-made sand screening: screening the obtained machine-made sand into four specifications of coarse, medium, fine and extra-fine according to the fineness modulus; s3, collecting sand making powder: collecting the sand making powder generated in the step S1 and the step S2 by a dust collecting apparatus; s4, storing machine-made sand: storing the machine-made sand and the sand-making powder in corresponding sand bins and powder bins according to the specification of the machine-made sand; s5, analyzing machine-made sand data: detecting the gradation and the powder content of the machine-made sand in each sand silo to obtain the data of the machine-made sand in the sand silo; s6, preparing dry-mixed mortar: according to the machine-made sand data in the sand warehouse of each specification and the product formula to be produced, respectively metering sand making powder, extra-fine machine-made sand, fine sand machine-made sand, medium sand machine-made sand, coarse sand machine-made sand, cement and various additives, and adding stirring equipment to mix and prepare dry-mixed mortar; s7, dry-mixed mortar data analysis: sampling and screening the dry-mixed mortar prepared in the S5, and respectively measuring the machine-made sand and powder with different particle sizes to obtain the component and machine-made sand grading particle size distribution data in the product; s8, dynamic gradation adjustment: and dynamically adjusting the machine-made sand dosage with different gradations according to the comparison of the machine-made sand gradation particle size distribution data of the finished dry-mixed mortar with the product production formula.
2. The method for producing a dry-mixed mortar with dynamically adjusted mechanism sand gradation as claimed in claim 1, wherein: in the step S2, the sand making of a coarse sand machine is 3.7 mm-3.1 mm, the sand making of a medium sand machine is 3.1 mm-2.3 mm, the sand making of a fine sand machine is 2.3 mm-1.6 mm, the sand making of an extra-fine sand machine is 1.6 mm-0.7 mm, and the sand making powder in the step S3 is 0.7 mm-0.
3. The method for producing a dry-mixed mortar with dynamically adjusted mechanism sand gradation as claimed in claim 1, wherein: and in the step S4, material level meters capable of dynamically monitoring the capacity of the sand bin are arranged in the sand bin and the powder bin.
4. The method for producing a dry-mixed mortar with dynamically adjusted mechanism sand gradation as claimed in claim 1, wherein: the operation of step S7 is as follows: the method comprises the following steps of collecting powder in a sample by using negative pressure screening equipment, sequentially passing the sample through a plurality of screens, wherein the screens sequentially comprise the following steps: the method comprises the following steps of screening a screen with an aperture of 2.5mm, a screen with an aperture of 1.25mm, a screen with an aperture of 0.63mm, a screen with an aperture of 0.315mm, a screen with an aperture of 0.16mm and a screen with an aperture of 0.08mm respectively to obtain machine-made sand with the particle sizes of 4.75 mm-2.36 mm, 2.36 mm-1.18 mm, 1.18 mm-0.6 mm, 0.6 mm-0.3 mm, 0.3 mm-0.15 mm and 0.15 mm-0.075 mm, and measuring the machine-made sand and powder with the particle sizes to obtain the powder amount and the machine-made sand grading particle size distribution data in the product.
5. The method for producing a dry-mixed mortar with dynamically adjusted mechanism sand gradation as claimed in claim 1, wherein: the dry-mixed mortar includes, but is not limited to, masonry mortar, plastering mortar, floor mortar and special mortar.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457837A (en) * | 2021-07-09 | 2021-10-01 | 中国水利水电第九工程局有限公司 | Method for washing coarse aggregate and monitoring pitch diameter on line in machine-made gravel production workshop |
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