CN110963727A - Processing method of aluminate cement blended mixed material - Google Patents
Processing method of aluminate cement blended mixed material Download PDFInfo
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- CN110963727A CN110963727A CN201911115705.7A CN201911115705A CN110963727A CN 110963727 A CN110963727 A CN 110963727A CN 201911115705 A CN201911115705 A CN 201911115705A CN 110963727 A CN110963727 A CN 110963727A
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- bauxite
- aluminate cement
- clinker
- limestone
- raw materials
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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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
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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
- C04B7/00—Hydraulic cements
- C04B7/32—Aluminous cements
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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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
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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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
- C04B7/52—Grinding ; After-treatment of ground cement
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention relates to the technical field of aluminate cement preparation processes, in particular to a processing method of an aluminate cement admixture. The method comprises the following steps: crushing bauxite and limestone into bauxite material and limestone material with granularity not more than 20 mm by using a crusher respectively; step two, mixing the bauxite material and the limestone material according to the proportion of 53%: mixing 47% of the raw materials to obtain a mixed material; grinding the mixed material by using a raw material ball mill, and sieving the ground mixed material to obtain powdery raw material; step four, homogenizing; step five, balling the homogenized raw materials, and then putting the balled raw materials into a rotary kiln for calcination to obtain clinker; step six, cooling the obtained clinker, adding the bauxite clinker in proportion after cooling, uniformly mixing, and grinding by using a ball mill to obtain a finished product of aluminate cement; and seventhly, after inspection, packaging, warehousing, sampling inspection, mechanically quantitatively packaging and warehousing.
Description
Technical Field
The invention relates to the technical field of aluminate cement preparation processes, in particular to a processing method of an aluminate cement admixture.
Background
The aluminate cement is a hydraulic cementing material prepared by using bauxite and limestone as raw materials, calcining to prepare clinker which takes calcium aluminate as a main component and has the content of alumina of about 50 percent, and grinding. Aluminate cements are often coffee or brown in color, and also gray in color. The main mineral of aluminate cement is calcium aluminate (CaO. Al)2O3CA) and other aluminates, and small amounts of dicalcium silicate (2 CaO. SiO)2) Etc., the colors are mostly gray and white.
However, with more and more calcium aluminate series product manufacturers and limited bauxite resources in the whole country, the production cost of the bauxite is high due to less and less production raw materials, so that the production enterprises are difficult to survive, and therefore, the aluminate cement produced by the bauxite cement meets the national standard and solves the problem of high production raw material cost.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a processing method for producing aluminate cement which meets the national standard and can solve the problem of high cost of raw materials for producing the aluminate cement blended mixed material.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a processing method of an aluminate cement admixture comprises the following steps:
crushing bauxite and limestone into bauxite material and limestone material with granularity not more than 20 mm by using a crusher respectively;
step two, mixing the bauxite material and the limestone material according to the proportion of 53%: mixing 47% of the raw materials to obtain a mixed material;
grinding the mixed material by using a raw material ball mill, and sieving the ground mixed material to obtain powdery raw material;
step four, homogenizing;
step five, balling the homogenized raw materials, and then putting the balled raw materials into a rotary kiln for calcination to obtain clinker;
step six, cooling the obtained clinker, adding the bauxite clinker in proportion after cooling, uniformly mixing, and grinding by using a ball mill to obtain a finished product of aluminate cement;
and seventhly, after inspection, packaging, warehousing, sampling inspection, mechanically quantitatively packaging and warehousing.
Preferably, in the first step, the bauxite material is dried before being mixed with the limestone material.
Preferably, in the third step, the sieving specifically comprises: sieving with 0.045mm square mesh sieve to obtain powder raw material with mesh no more than 80.
Preferably, in the fifth step, the calcination temperature is 1300-.
Preferably, in the sixth step, the clinker cooling time is not less than 24 h.
Preferably, in the sixth step, the ratio of the clinker to the bauxite clinker is 8.5-9: 1-1.5.
The processing method of the aluminate cement admixture has the following advantages:
the invention adds the bauxite clinker generated in the previous clinker processing after the clinker is prepared, uniformly mixes the bauxite clinker with the clinker in proportion and then grinds the mixture by using the ball mill to obtain the finished product aluminate cement, and the finished product aluminate cement meets the national standards of various cements after being detected by various indexes.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
As shown in figure 1, the processing method of the aluminate cement admixture comprises the following steps:
crushing bauxite and limestone into bauxite material and limestone material with granularity not more than 20 mm by using a crusher respectively; drying the bauxite material before mixing with the limestone material;
step two, mixing the bauxite material and the limestone material according to the proportion of 53%: mixing 47% of the raw materials to obtain a mixed material;
grinding the mixed material by using a raw material ball mill, screening the ground mixed material by using a 0.045mm square-hole sieve, and obtaining powdery raw material with the mesh number not more than 80 meshes after screening;
step four, homogenizing;
step five, pelletizing the homogenized raw materials, and then putting the pelletized raw materials into a rotary kiln for calcination, wherein the calcination temperature is 1300 ℃, the calcination time is 240min, and the rotation speed of the rotary kiln is 0.7r/min to obtain clinker;
step six, cooling the obtained clinker for 24 hours, and then cooling the clinker according to the proportion of 9:1 adding bauxite clinker, uniformly mixing, and then grinding by using a ball mill to obtain a finished product of aluminate cement;
and seventhly, after inspection, packaging, warehousing, sampling inspection, mechanically quantitatively packaging and warehousing.
Example 2
As shown in figure 1, the processing method of the aluminate cement admixture comprises the following steps:
crushing bauxite and limestone into bauxite material and limestone material with granularity not more than 20 mm by using a crusher respectively; drying the bauxite material before mixing with the limestone material;
step two, mixing the bauxite material and the limestone material according to the proportion of 53 percent to 47 percent to obtain a mixed material;
grinding the mixed material by using a raw material ball mill, screening the ground mixed material by using a 0.045mm square-hole sieve, and obtaining powdery raw material with the mesh number not more than 80 meshes after screening;
step four, homogenizing;
step five, pelletizing the homogenized raw materials, and then putting the pelletized raw materials into a rotary kiln for calcination, wherein the calcination temperature is 1350 ℃, the calcination time is 230min, and the rotation speed of the rotary kiln is 0.7r/min to obtain clinker;
step six, cooling the obtained clinker for 25 hours, and then cooling the clinker according to the proportion of 8.5: 1.5 adding bauxite clinker, uniformly mixing, and then grinding by using a ball mill to obtain a finished product of aluminate cement;
and seventhly, after inspection, packaging, warehousing, sampling inspection, mechanically quantitatively packaging and warehousing.
Example 3
As shown in figure 1, the processing method of the aluminate cement admixture comprises the following steps:
crushing bauxite and limestone into bauxite material and limestone material with granularity not more than 20 mm by using a crusher respectively; drying the bauxite material before mixing with the limestone material;
step two, mixing the bauxite material and the limestone material according to the proportion of 53%: mixing 47% of the raw materials to obtain a mixed material;
grinding the mixed material by using a raw material ball mill, screening the ground mixed material by using a 0.045mm square-hole sieve, and obtaining powdery raw material with the mesh number not more than 80 meshes after screening;
step four, homogenizing;
step five, pelletizing the homogenized raw materials, and then putting the pelletized raw materials into a rotary kiln for calcination, wherein the calcination temperature is 1400 ℃, the calcination time is 210min, and the rotation speed of the rotary kiln is 0.7r/min to obtain clinker;
step six, cooling the obtained clinker for 26 hours, and then cooling the clinker according to the proportion of 9:1 adding bauxite clinker, uniformly mixing, and then grinding by using a ball mill to obtain a finished product of aluminate cement;
and seventhly, after inspection, packaging, warehousing, sampling inspection, mechanically quantitatively packaging and warehousing.
By combining the three embodiments, the finished product aluminate cement produced by the method is detected by various indexes:
it was found that the fineness of the aluminate cement of the finished product obtained in examples 1 to 3 was over 0.045mm square mesh sieve, and the results obtained were: the screen residue does not exceed 20 percent.
And the coagulation time thereof all meets the indexes specified in the following table 1,
table 1, setting time table for each cement type.
The strength of the alloy meets the indexes specified in the following table 2,
table 2 table of strength for each cement type.
The chemical indexes thereof meet the indexes of the following table 3
Table 3 chemical index table for each cement type.
In conclusion, the cement prepared by the method meets the regulations of various national index tables, not only saves the production cost, but also achieves the purpose of resource recycling, and greatly improves the production benefit of enterprises.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (6)
1. The processing method of the aluminate cement admixture is characterized by comprising the following steps:
crushing bauxite and limestone into bauxite material and limestone material with granularity not more than 20 mm by using a crusher respectively;
step two, mixing 53% of the bauxite material and the limestone material: mixing 47% of the raw materials to obtain a mixed material;
grinding the mixed material by using a raw material ball mill, and sieving the ground mixed material to obtain powdery raw material;
step four, homogenizing;
step five, balling the homogenized raw materials, and then putting the balled raw materials into a rotary kiln for calcination to obtain clinker;
step six, cooling the obtained clinker, adding the bauxite clinker in proportion after cooling, uniformly mixing, and grinding by using a ball mill to obtain a finished product of aluminate cement;
and seventhly, after inspection, packaging, warehousing, sampling inspection, mechanically quantitatively packaging and warehousing.
2. The method for processing the aluminate cement admixture according to claim 1, wherein: in the first step, the bauxite material is dried before being mixed with the limestone material.
3. The method for processing the aluminate cement admixture according to claim 1, wherein in the third step, the screening specifically comprises: sieving with 0.045mm square mesh sieve to obtain powder raw material with mesh no more than 80.
4. The method for processing the aluminate cement admixture according to claim 1, wherein: in the fifth step, the calcination temperature is 1300-1400 ℃, the calcination time is 210-240min, and the rotation speed of the rotary kiln is 0.7 r/min.
5. The method for processing the aluminate cement admixture according to claim 1, wherein: in the sixth step, the clinker cooling time is not less than 24 h.
6. The method for processing the aluminate cement admixture according to claim 1, wherein: in the sixth step, the ratio of the clinker to the bauxite clinker is 8.5-9: 1-1.5.
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| CN201911115705.7A CN110963727A (en) | 2019-11-14 | 2019-11-14 | Processing method of aluminate cement blended mixed material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113666651A (en) * | 2021-09-18 | 2021-11-19 | 北京金隅通达耐火技术有限公司 | Titanium-based aluminate cement and preparation method thereof |
| CN113816626A (en) * | 2021-09-26 | 2021-12-21 | 江西银杉白水泥股份有限公司 | White aluminate cement with ultrahigh whiteness and preparation method thereof |
| CN114279779A (en) * | 2021-12-03 | 2022-04-05 | 北京建筑材料科学研究总院有限公司 | Method for preparing cement clinker test sample in laboratory |
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2019
- 2019-11-14 CN CN201911115705.7A patent/CN110963727A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113666651A (en) * | 2021-09-18 | 2021-11-19 | 北京金隅通达耐火技术有限公司 | Titanium-based aluminate cement and preparation method thereof |
| CN113816626A (en) * | 2021-09-26 | 2021-12-21 | 江西银杉白水泥股份有限公司 | White aluminate cement with ultrahigh whiteness and preparation method thereof |
| CN114279779A (en) * | 2021-12-03 | 2022-04-05 | 北京建筑材料科学研究总院有限公司 | Method for preparing cement clinker test sample in laboratory |
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Application publication date: 20200407 |