CN113213784A - Cement production method - Google Patents
Cement production method Download PDFInfo
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- CN113213784A CN113213784A CN202110447961.7A CN202110447961A CN113213784A CN 113213784 A CN113213784 A CN 113213784A CN 202110447961 A CN202110447961 A CN 202110447961A CN 113213784 A CN113213784 A CN 113213784A
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- Prior art keywords
- cement
- parts
- raw materials
- feeding
- gypsum
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Classifications
-
- 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
- C04B7/14—Cements containing slag
-
- 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
-
- 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
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a cement production method, which specifically comprises the following steps: (1) weighing corresponding parts by weight of cement raw materials, and putting the cement raw materials into a pulverizer for pulverization to obtain cement raw materials; (2) feeding the cement raw material into a calcining furnace for calcining to prepare cement clinker; (3) heating gypsum, naturally cooling to room temperature, and grinding; (4) feeding gypsum and cement clinker into a ball mill together for ball milling to obtain cement premix; (5) and (3) feeding the cement premix into a dryer for drying to obtain the cement. The invention relates to the technical field of cement production, and particularly provides a production method for cement with simple preparation process flow and uniform control of cement particle size.
Description
Technical Field
The invention relates to the technical field of cement production, in particular to a production method of cement.
Background
The cement is made up by using limestone and clay as main raw materials, through the processes of crushing, proportioning and grinding, and then feeding them into cement kiln, calcining to obtain clinker, and then adding a proper quantity of gypsum, mixing material and additive into the clinker, and grinding so as to obtain the invented product. The cement is widely applied to engineering such as civil construction, water conservancy, national defense and the like. A production line consisting of a series of traditional cement production equipment. The method mainly comprises the processes of crushing and pre-homogenizing, raw material preparation and homogenizing, preheating and decomposing, cement clinker sintering, cement grinding and packaging and the like.
In the process of cement production line, at least 3 tons of materials (including various raw materials, fuel, clinker, mixture and gypsum) are ground when 1 ton of portland cement is produced, according to statistics, the power consumed by the grinding operation of the dry cement production line accounts for about more than 60% of the power of the whole plant, wherein the grinding of raw materials accounts for more than 30%, the grinding of coal accounts for about 3%, and the grinding of cement accounts for about 40%. Therefore, the grinding equipment and the process flow are reasonably selected, the process parameters are optimized, the operation is correct, the operation system is controlled, and the method has great significance for ensuring the product quality and reducing the energy consumption.
Disclosure of Invention
In order to overcome the defects, the invention provides a production method for cement with simple preparation process and uniform control of cement particle size.
The invention provides the following technical scheme: the invention relates to a cement production method, which specifically comprises the following steps:
(1) weighing corresponding parts by weight of cement raw materials, and putting the cement raw materials into a pulverizer to be pulverized to obtain cement raw materials, wherein the cement raw materials comprise the following components in parts by weight: 35-50 parts of limestone, 25-35 parts of clay, 15-25 parts of iron ore, 5-15 parts of mica, 10-15 parts of slag and 3-5 parts of cement grinding aid;
(2) feeding the cement raw material into a calcining furnace for calcining at the temperature of 1100-1300 ℃, for 40-60min and under the negative pressure of-30-40 Pa to obtain cement clinker;
(3) heating the gypsum to 140 ℃ for 120-2/kg；
(4) Feeding gypsum and cement clinker into a ball mill together for ball milling to obtain cement premix, wherein the specific surface area of the cement premix is 350-360m2/kg；
(5) And (3) feeding the cement premix into a dryer for drying at the drying temperature of 100-200 ℃ for 2-3h to obtain the cement.
Further, the crushing time in the step (1) is 40-60min, and the crushing speed is 220-280 r/min.
Further, the cement grinding aid comprises the following components in parts by weight: 5-10 parts of triethanolamine, 3-8 parts of sorbitol, 3-8 parts of sodium acetate and 2-5 parts of water.
Further, the specific surface area of the cement raw material is 280-320m2/kg。
Further, in the calcining process in the step (2), a large amount of air is introduced into the calcining furnace through an air blower, and a stirring shaft is adopted for stirring, so that sufficient calcining is ensured.
Further, the weight ratio of the cement raw material to the gypsum is (85-90): (10-15).
The invention with the structure has the following beneficial effects: according to the production method of the cement, the specific surface areas of the cement raw materials and the gypsum are controlled in advance on the basis of the traditional cement preparation, the grinding aid is added, the particle size of the cement premix is conveniently controlled, and the strength of the cement is improved by matching the matching effect of the components of the cement raw materials.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all of the 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.
Example 1:
the cement production method specifically comprises the following steps:
(1) weighing cement raw materials in corresponding parts by weight, putting the cement raw materials into a crusher for crushing, crushing for 50min at a crushing speed of 250r/min to obtain cement raw materials with the specific surface area of 280-320m2The cement raw material comprises the following components in parts by weight: 42.5 parts of limestone, 30 parts of clay, 20 parts of iron ore, 10 parts of mica, 12.5 parts of slag and 4 parts of cement grinding aid;
(2) feeding the cement raw material into a calcining furnace for calcining at the calcining temperature of 1100-1300 ℃, the calcining time of 50min and the negative pressure of-30-40 Pa to prepare cement clinker, introducing a large amount of air into the calcining furnace through a blower in the calcining process, and stirring by adopting a stirring shaft to ensure full calcining;
(3) heating the gypsum to 140 ℃ for 120-2/kg；
(4) Feeding gypsum and cement clinker into a ball mill together for ball milling to obtain a cement premix, wherein the weight ratio of the cement raw materials to the gypsum is 85: 15, the specific surface area of the cement premix is 350-2/kg；
(5) And (3) feeding the cement premix into a dryer for drying at the drying temperature of 100 ℃ and 200 ℃ for 2.5h to obtain the cement.
The cement grinding aid comprises the following components in parts by weight: 7.5 parts of triethanolamine, 5.5 parts of sorbitol, 5.5 parts of sodium acetate and 3.5 parts of water.
Example 2:
the cement production method specifically comprises the following steps:
(1) weighing cement raw materials in corresponding parts by weight, putting the cement raw materials into a crusher for crushing, crushing for 40min at a crushing speed of 220r/min to obtain cement raw materials with the specific surface area of 280-320m2The cement raw material comprises the following components in parts by weight: 35 parts of limestone, 25 parts of clay, 15 parts of iron ore, 5 parts of mica, 10 parts of slag and 3 parts of cement grinding aid;
(2) feeding the cement raw material into a calcining furnace for calcining at the calcining temperature of 1100-1300 ℃, the calcining time of 40min and the negative pressure of-30-40 Pa to prepare cement clinker, introducing a large amount of air into the calcining furnace through a blower in the calcining process, and stirring by adopting a stirring shaft to ensure full calcining;
(3) heating the gypsum to 140 ℃ for 120-2/kg；
(4) Feeding gypsum and cement clinker into a ball mill together for ball milling to obtain cement premix, wherein the cement raw material and the gypsumThe weight ratio of (A) to (B) is 90: 10, the specific surface area of the cement premix is 350-360m2/kg；
(5) And (3) feeding the cement premix into a dryer for drying at the drying temperature of 100-200 ℃ for 2h to obtain the cement.
The cement grinding aid comprises the following components in parts by weight: 5 parts of triethanolamine, 3 parts of sorbitol, 3 parts of sodium acetate and 2 parts of water.
Example 3:
the cement production method specifically comprises the following steps:
(1) weighing cement raw materials in corresponding parts by weight, putting the cement raw materials into a crusher for crushing, crushing for 40min at a crushing speed of 280r/min to obtain cement raw materials with the specific surface area of 280-320m2The cement raw material comprises the following components in parts by weight: 50 parts of limestone, 35 parts of clay, 25 parts of iron ore, 5-15 parts of mica, 15 parts of slag and 5 parts of cement grinding aid;
(2) feeding the cement raw material into a calcining furnace for calcining at the temperature of 1100-1300 ℃, for 60min and under the negative pressure of-30-40 Pa to obtain cement clinker;
(3) heating the gypsum to 140 ℃ for 120-2/kg；
(4) Feeding gypsum and cement clinker into a ball mill together for ball milling to obtain a cement premix, wherein the weight ratio of the cement raw materials to the gypsum is 87: 13, the specific surface area of the cement premix is 350-360m2/kg；
(5) And (3) feeding the cement premix into a dryer for drying at the drying temperature of 100-200 ℃ for 3h to obtain the cement.
The cement grinding aid comprises the following components in parts by weight: 10 parts of triethanolamine, 8 parts of sorbitol, 8 parts of sodium acetate and 5 parts of water.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The production method of the cement is characterized by comprising the following steps:
(1) weighing corresponding parts by weight of cement raw materials, and putting the cement raw materials into a pulverizer to be pulverized to obtain cement raw materials, wherein the cement raw materials comprise the following components in parts by weight: 35-50 parts of limestone, 25-35 parts of clay, 15-25 parts of iron ore, 5-15 parts of mica, 10-15 parts of slag and 3-5 parts of cement grinding aid;
(2) feeding the cement raw material into a calcining furnace for calcining at the temperature of 1100-1300 ℃, for 40-60min and under the negative pressure of-30-40 Pa to obtain cement clinker;
(3) heating the gypsum to 140 ℃ for 120-2/kg；
(4) Feeding gypsum and cement clinker into a ball mill together for ball milling to obtain cement premix, wherein the specific surface area of the cement premix is 350-360m2/kg；
(5) And (3) feeding the cement premix into a dryer for drying at the drying temperature of 100-200 ℃ for 2-3h to obtain the cement.
2. The method for producing cement as claimed in claim 1, wherein the pulverizing time in step (1) is 40-60min, and the pulverizing rate is 220-280 r/min.
3. The method for producing cement according to claim 1, wherein the cement grinding aid comprises the following components in parts by weight: 5-10 parts of triethanolamine, 3-8 parts of sorbitol, 3-8 parts of sodium acetate and 2-5 parts of water.
4. The method for producing cement as claimed in claim 1, wherein the specific surface area of the cement raw material is 280-320m2/kg。
5. The method for producing cement according to claim 1, wherein a large amount of air is blown into the calciner through the blower during the calcination in the step (2), and the agitation is performed by the agitating shaft.
6. The method for producing cement according to claim 1, wherein the weight ratio of the cement raw material to the gypsum is (85-90): (10-15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110447961.7A CN113213784A (en) | 2021-04-25 | 2021-04-25 | Cement production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110447961.7A CN113213784A (en) | 2021-04-25 | 2021-04-25 | Cement production method |
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| CN113213784A true CN113213784A (en) | 2021-08-06 |
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| CN202110447961.7A Pending CN113213784A (en) | 2021-04-25 | 2021-04-25 | Cement production method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115073029A (en) * | 2022-07-28 | 2022-09-20 | 广西华宏水泥股份有限公司 | Preparation method of heat insulation cement |
| CN115959843A (en) * | 2023-02-07 | 2023-04-14 | 永州红狮水泥有限公司 | Method for preparing cement by using desulfurized slag |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5815048A (en) * | 1981-07-16 | 1983-01-28 | 宇部興産株式会社 | Cement composition for high temperature |
| CN1259493A (en) * | 1999-06-17 | 2000-07-12 | 张兴堂 | Method of producing super early strength high grade portland cement clinker by using mechanical vertical kiln |
| CN1640842A (en) * | 2004-12-15 | 2005-07-20 | 吉林省通化特种水泥集团股份有限公司 | Special cement and its production process |
| CN105541143A (en) * | 2016-01-19 | 2016-05-04 | 北京建筑材料科学研究总院有限公司 | Method for producing high-strength low-carbon cement clinkers by using novel dry-method rotary kiln system |
| CN111018374A (en) * | 2019-11-07 | 2020-04-17 | 安徽省巢湖市强生建材有限公司 | Environment-friendly cement clinker and manufacturing process thereof |
-
2021
- 2021-04-25 CN CN202110447961.7A patent/CN113213784A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5815048A (en) * | 1981-07-16 | 1983-01-28 | 宇部興産株式会社 | Cement composition for high temperature |
| CN1259493A (en) * | 1999-06-17 | 2000-07-12 | 张兴堂 | Method of producing super early strength high grade portland cement clinker by using mechanical vertical kiln |
| CN1640842A (en) * | 2004-12-15 | 2005-07-20 | 吉林省通化特种水泥集团股份有限公司 | Special cement and its production process |
| CN105541143A (en) * | 2016-01-19 | 2016-05-04 | 北京建筑材料科学研究总院有限公司 | Method for producing high-strength low-carbon cement clinkers by using novel dry-method rotary kiln system |
| CN111018374A (en) * | 2019-11-07 | 2020-04-17 | 安徽省巢湖市强生建材有限公司 | Environment-friendly cement clinker and manufacturing process thereof |
Non-Patent Citations (2)
| Title |
|---|
| 李贺林等: "《全国水泥粉磨技术优秀论文集》", 1 March 2003, 中国建材工业出版社 * |
| 沈威: "《水泥工艺学》", 31 December 2011, 武汉理工大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115073029A (en) * | 2022-07-28 | 2022-09-20 | 广西华宏水泥股份有限公司 | Preparation method of heat insulation cement |
| CN115959843A (en) * | 2023-02-07 | 2023-04-14 | 永州红狮水泥有限公司 | Method for preparing cement by using desulfurized slag |
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Application publication date: 20210806 |
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