CN111170664A - Process for producing cement for airport roads - Google Patents
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- CN111170664A CN111170664A CN202010072174.4A CN202010072174A CN111170664A CN 111170664 A CN111170664 A CN 111170664A CN 202010072174 A CN202010072174 A CN 202010072174A CN 111170664 A CN111170664 A CN 111170664A
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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
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
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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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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a cement production process for airport roads, which mainly comprises the following steps: the cement is prepared by adopting four raw materials of high-quality limestone, fly ash, converter slag and silica to carry out raw material batching, sequentially carrying out raw material grinding, homogenization treatment, suspension preheating and pre-decomposition with high solid-gas ratio, then burning in a novel dry rotary kiln to prepare clinker, and carrying out cement grinding by adopting 96.0% of clinker, 4.0% of gypsum and 0.06% of grinding aid to prepare cement. The invention reduces the alkali content in the cement, improves the quality of the cement material, reduces the hydration heat of the cement, prevents the damage of alkali-aggregate reaction to the concrete, can greatly prolong the service life of the airport pavement and reduce the resource waste, thereby generating great economic and social benefits.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a cement production process for airport roads.
Background
With the rapid development of the modern construction of high-grade airport road traffic, the development of cement concrete pavements has been put to the important position of road construction, but the concrete pavements have the advantages of long service life, simple construction and low maintenance cost compared with asphalt pavements, and have the characteristics of good wear resistance and impact resistance, so the cement concrete pavements are widely applied to various countries in the world. Compared with the airport road construction which is rapidly developed abroad, the development of road portland cement in China is relatively slow. At present, not only the early damage of the concrete pavement of the airport road is serious, but also the cement of the airport road is unknown with the vast road construction departments besides the construction quality, so that most of the concrete pavement still uses the common cement at present, thereby limiting the further development of the road Portland cement. The cement concrete road of the airport road has very strict requirements on cement, which can not be used for any kind of cement at any time, and the selection of the cement for the airport road must be strictly carried out according to the technical requirements.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects in the prior art and disclose a cement production process for airport roads, which reduces the alkali content in cement, improves the quality of cement, reduces the hydration heat of cement, prevents the damage of alkali-aggregate reaction to concrete, can greatly prolong the service life of airport roads and reduce the resource waste, thereby generating great economic and social benefits.
The technical scheme adopted by the invention for solving the technical problems is as follows: a cement production process for airport roads comprises the following steps:
the method comprises the following steps: adopting four raw materials of high-quality limestone, fly ash, converter slag and silica to carry out raw material proportioning, and sending the high-quality limestone, fly ash, converter slag and silica to a raw material proportioning station to carry out proportioning and weighing;
step two: placing the prepared raw material in a raw material mill for grinding, and ensuring that the fineness of the ground raw material is 80 mu m, the screen residue is controlled to be 16 +/-2 percent, and the water content is less than or equal to 0.5 percent;
step three: the ground raw powder enters a homogenizing warehouse through an eight-nozzle distributor to be subjected to circular blowing and stirring, so that the homogenizing effect is achieved;
step four: feeding the homogenized raw meal powder into a preheater for preheating treatment, wherein the five-stage preheating temperature is 800-850 ℃;
step five: feeding the preheated raw meal powder into a decomposing furnace for decomposition treatment, wherein the temperature of the decomposing furnace is 900-1000 ℃, and the decomposition rate is up to more than 93%;
step six: calcining the decomposed raw material in a rotary kiln for 15-20 min at the kiln tail temperature of 1200 ℃ and the calcining temperature of 1350 ℃ to prepare clinker at the clinker temperature of 80 ℃;
step seven: the method comprises the steps of grinding 96.0% of clinker, 4.0% of desulfurized gypsum and 0.06% of grinding aid into cement powder with the specific surface area of 350 +/-10 m2/kg and the sulfur trioxide content of 2.3 +/-0.2, and sending the ground airport road cement into a finished product warehouse.
As a preferred embodiment of the present invention, the high quality limestone consists of the following chemical components: the composition of the coating comprises 42.41 wt% of Loss, 1.86 wt% of silicon dioxide, 1.18 wt% of aluminum oxide, 0.22 wt% of iron oxide, 51.67 wt% of calcium oxide, 1.60 wt% of magnesium oxide, 0.15 wt% of potassium oxide, 0.08 wt% of sodium oxide and 0.18 wt% of alkali.
As a preferred embodiment of the present invention, the fly ash is composed of the following chemical components: a Loss content of 21.84 wt%, a silica content of 37.95 wt%, an alumina content of 25.77 wt%, an iron oxide content of 5.21 wt%, a calcium oxide content of 4.50 wt%, a magnesium oxide content of 0.61 wt%, a potassium oxide content of 0.62 wt%, a sodium oxide content of 0.18 wt% and an alkali content of 0.59 wt%.
As a preferred embodiment of the present invention, the converter slag is composed of the following chemical components: a Loss content of 3.64 wt%, a silica content of 15.37 wt%, an alumina content of 3.63 wt%, an iron oxide content of 25.07 wt%, a calcium oxide content of 38.60 wt%, a magnesium oxide content of 7.19 wt%, a potassium oxide content of 0.16 wt%, a sodium oxide content of 0.19 wt% and an alkali content of 0.30 wt%.
As a preferred embodiment of the invention, the silica consists of the following chemical components: 0.95 wt% of Loss, 91.97 wt% of silica, 1.72 wt% of alumina, 0.80 wt% of iron oxide, 2.53 wt% of calcium oxide, 0.81 wt% of magnesium oxide, 0.09 wt% of potassium oxide, 0.11 wt% of sodium oxide and 0.17 wt% of alkali.
In a preferred embodiment of the present invention, the milled raw meal consists of the following chemical components: 13.42 wt% of silicon oxide, 3.06 wt% of aluminum oxide, 2.56 wt% of iron oxide, 42.04 wt% of calcium oxide, 2.26 wt% of magnesium oxide, 0.30 wt% of alkali and 0.14 wt% of sulfur trioxide.
As a preferred embodiment of the present invention, the homogenized green powder consists of the following chemical components: 13.30 wt% of silicon oxide, 3.13 wt% of aluminum oxide, 2.49 wt% of iron oxide, 42.02 wt% of calcium oxide, 2.00 wt% of magnesium oxide, 0.32 wt% of alkali and 0.15 wt% of sulfur trioxide.
In a preferred embodiment of the present invention, the value of KH ═ 0.96 ± 0.02, SM ═ 2.40 ± 0.10, and IM ═ 1.20 ± 0.10 are the raw meal powders to be homogenized.
In a preferred embodiment of the invention, the clinker trispecificities are 0.88 ± 0.02 KH, 2.30 ± 0.10 SM, and 1.30 ± 0.10 IM, respectively, and clinker free calcium ≤ 1.0% and clinker C3A ≤ 7.0%.
The invention selects high-quality limestone as a calcium raw material instead of low-quality limestone, the CaO content of the limestone is 51.67 percent, the MgO content of the limestone is 1.60 percent, the R2O content of the limestone is 0.17 percent, the fly ash replaces clay to serve as a silicon-aluminum raw material, the AL2O3 content of the fly ash is 25.77 percent, the SiO2 content of the fly ash is 37.95 percent, the MgO content of the fly ash is 0.61 percent, the R2O content of the fly ash is 0.59 percent, the converter slag replaces non-ferrous metal ash to serve as an iron raw material, the Fe2O3 content of the converter slag is 25.07 percent; silica is used as a siliceous correcting material, has the content of SiO2 as high as 91.97 percent and the content of R2O as 0.17, and can replace part of fly ash to reduce the aluminum oxygen value; desulfurized gypsum is selected as a cement retarder, the SO3 content of the desulfurized gypsum reaches 35 to 40 percent, the quality is stable, the coal quality is selected as fuel, the calorific value is 24000kj/kg, and the ash content is 20 +/-2 percent; selecting a clinker proportioning scheme with medium saturation ratio, low silicon rate and low aluminum oxygen rate, wherein the value of three rates of homogenized raw meal powder is KH 0.96 +/-0.02, SM 2.40 +/-0.10 and IM 1.20 +/-0.10; the clinker rate three values are as follows: KH is 0.88 +/-0.02, SM is 2.30 +/-0.10, IM is 1.30 +/-0.0.05, and the cement proportioning scheme is as follows: 96.0 percent of low-alkali clinker, 4.0 percent of desulfurized gypsum and 0.065 percent of grinding aid; the quality of raw materials is ensured, the 80 mu m screen residue of the fineness of the raw material is controlled to be 16 +/-2%, the water content is less than or equal to 0.5%, the qualified rate of the three-rate value of the homogenized raw material powder is controlled to be 80%, the raw material powder enters a homogenizing warehouse through an eight-nozzle distributor, circular blowing and stirring are carried out to achieve the homogenizing effect, the fineness of the coal powder is ensured, the 45 mu m screen residue is 10 +/-2%, and the water content is less than or equal to 2.; the calcining temperature of the rotary kiln is improved, the speed, the yield and the temperature of the decomposing furnace of the rotary kiln are reasonably controlled, the ventilation in the rotary kiln is ensured, and the production clinker is homogenized by transferring and matching a plurality of storehouses; the cement grinding process is improved, and the cement specific surface area is controlled to be 350 +/-10 m 2/Kg.
Compared with the prior art, the invention has the following advantages: the alkali content in the cement is reduced, the quality of the cement is improved, the hydration heat of the cement is reduced, the damage of alkali-aggregate reaction to the concrete is prevented, the service life of the airport pavement can be greatly prolonged, the resource waste is reduced, and therefore huge economic and social benefits are generated.
Drawings
FIG. 1 is a flow chart of the production process of the present invention.
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings and examples:
it should be noted that the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are only for the purpose of understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined by the following claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes, without affecting the efficacy and attainment of the same, are intended to fall within the scope of the present disclosure.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1, which illustrates a specific embodiment of the present invention; as shown in FIG. 1, the invention discloses a cement production process for airport roads, which comprises the following steps:
the method comprises the following steps: conveying high-quality limestone in a high-quality limestone pre-homogenization piling shed proportioning bin, fly ash in a fly ash piling shed proportioning bin, converter slag in a converter slag proportioning bin and silica in a silica piling shed proportioning bin to a raw material proportioning station through a belt conveying line, and conveying the high-quality limestone, the fly ash, the converter slag and the silica to the raw material proportioning station for proportioning and weighing, wherein a chemical composition table of the high-quality limestone, the fly ash, the converter slag and the silica is shown in table 1;
TABLE 1 chemical composition table of high quality limestone, fly ash, converter slag and silica
Step two: placing the prepared raw material in a raw material mill for grinding, and ensuring that the fineness of the ground raw material is 80 mu m, the screen residue is controlled to be 16 +/-2 percent, and the water content is less than or equal to 0.5 percent;
step three: the ground raw powder enters a homogenizing warehouse through an eight-nozzle distributor to be subjected to circular blowing and stirring, so that the homogenizing effect is achieved;
step four: feeding the homogenized raw meal powder into a preheater for preheating treatment, wherein the five-stage preheating temperature is 800-850 ℃;
step five: feeding the preheated raw meal powder into a decomposing furnace for decomposition treatment, wherein the temperature of the decomposing furnace is 900-1000 ℃, and the decomposition rate is up to more than 93%;
step six: calcining the decomposed raw material in a rotary kiln for 15-20 min, wherein the kiln tail temperature is 1200 ℃, the calcining temperature is 1350 ℃, and cooling is carried out to obtain clinker, the clinker temperature is 80 ℃, and the chemical components, the ratio values and the mineral components of the raw material and the clinker are shown in Table 2;
TABLE 2 chemical composition, specific value and mineral composition table of raw and clinker
Step seven: cement grinding is carried out by adopting 96.0% of clinker, 4.0% of desulfurized gypsum and 0.06% of grinding aid, the specific surface area is 350 +/-10 m2/kg, the sulfur trioxide is 2.3 +/-0.2, and the ground airport road cement is sent into a finished product warehouse, wherein the analysis result of the airport road cement product is shown in table 3;
TABLE 3 analysis results of airport road cement
Preferably, the high-quality limestone consists of the following chemical components: the composition of the coating comprises 42.41 wt% of Loss, 1.86 wt% of silicon dioxide, 1.18 wt% of aluminum oxide, 0.22 wt% of iron oxide, 51.67 wt% of calcium oxide, 1.60 wt% of magnesium oxide, 0.15 wt% of potassium oxide, 0.08 wt% of sodium oxide and 0.18 wt% of alkali.
Preferably, the fly ash consists of the following chemical components: a Loss content of 21.84 wt%, a silica content of 37.95 wt%, an alumina content of 25.77 wt%, an iron oxide content of 5.21 wt%, a calcium oxide content of 4.50 wt%, a magnesium oxide content of 0.61 wt%, a potassium oxide content of 0.62 wt%, a sodium oxide content of 0.18 wt% and an alkali content of 0.59 wt%.
Preferably, the converter slag comprises the following chemical components: a Loss content of 3.64 wt%, a silica content of 15.37 wt%, an alumina content of 3.63 wt%, an iron oxide content of 25.07 wt%, a calcium oxide content of 38.60 wt%, a magnesium oxide content of 7.19 wt%, a potassium oxide content of 0.16 wt%, a sodium oxide content of 0.19 wt% and an alkali content of 0.30 wt%.
Preferably, the silica consists of the following chemical components: 0.95 wt% of Loss, 91.97 wt% of silica, 1.72 wt% of alumina, 0.80 wt% of iron oxide, 2.53 wt% of calcium oxide, 0.81 wt% of magnesium oxide, 0.09 wt% of potassium oxide, 0.11 wt% of sodium oxide and 0.17 wt% of alkali.
Preferably, the milled raw powder consists of the following chemical components: 13.42 wt% of silicon oxide, 3.06 wt% of aluminum oxide, 2.56 wt% of iron oxide, 42.04 wt% of calcium oxide, 2.26 wt% of magnesium oxide, 0.30 wt% of alkali and 0.14 wt% of sulfur trioxide.
Preferably, the homogenized green powder consists of the following chemical components: 13.30 wt% of silicon oxide, 3.13 wt% of aluminum oxide, 2.49 wt% of iron oxide, 42.02 wt% of calcium oxide, 2.00 wt% of magnesium oxide, 0.32 wt% of alkali and 0.15 wt% of sulfur trioxide.
Preferably, the homogenized green powder has respective values KH 0.96 ± 0.02, SM 2.40 ± 0.10 and IM 1.20 ± 0.10.
Preferably, the clinker trispecificity values are 0.88 + -0.02 KH, 2.30 + -0.10 SM, 1.30 + -0.10 IM, 1.0% clinker free calcium and 7.0% clinker C3A, respectively.
The average alkali content of the homogenized raw meal powder is 0.30 percent, the average alkali content of the preheated raw meal powder is 0.32 percent, the average alkali content of the clinker of the decomposing furnace is 0.56 percent, the alkali content of cement on a road of a grinding airport is 0.55 percent, the content of C3A of the clinker of the decomposing furnace is 6.41 percent, the content of C4AF is 12.74 percent, and the breaking strength of the cement 28d is 8.5 MPa; the cement indexes of alkali content, free calcium, C3A, C4AF, strength and the like of the airport road meet the cement index requirements of airport roads in MH 5006-2015, and the airport requirements are met.
Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (9)
1. A production process of airport road cement is characterized in that: the method comprises the following steps:
the method comprises the following steps: adopting four raw materials of high-quality limestone, fly ash, converter slag and silica to carry out raw material proportioning, and sending the high-quality limestone, fly ash, converter slag and silica to a raw material proportioning station to carry out proportioning and weighing;
step two: feeding the prepared raw material into a raw material mill for grinding operation, ensuring that the fineness of the ground raw material is 80 mu m, the screen residue is controlled to be 16 +/-2 percent, and the water content is less than or equal to 0.5 percent;
step three: the ground raw powder enters a homogenizing warehouse through an eight-nozzle distributor to be subjected to circular blowing and stirring, so that the homogenizing effect is achieved;
step four: feeding the homogenized raw meal powder into a preheater for preheating treatment, wherein the five-stage preheating temperature is 800-850 ℃;
step five: feeding the preheated raw meal powder into a decomposing furnace for decomposition treatment, wherein the temperature of the decomposing furnace is 900-1000 ℃, and the decomposition rate is up to more than 93%;
step six: calcining the decomposed raw material in a rotary kiln for 15-20 min at the kiln tail temperature of 1200 ℃ and the calcining temperature of 1350 ℃ to prepare clinker at the clinker temperature of 80 ℃;
step seven: the method comprises the steps of grinding 96.0% of clinker, 4.0% of desulfurized gypsum and 0.06% of grinding aid into cement powder with the specific surface area of 350 +/-10 m2/kg and the sulfur trioxide content of 2.3 +/-0.2, and sending the ground airport road cement into a finished product warehouse.
2. The process for producing airport road cement of claim 1, wherein: the high-quality limestone consists of the following chemical components: the composition of the coating comprises 42.41 wt% of Loss, 1.86 wt% of silicon dioxide, 1.18 wt% of aluminum oxide, 0.22 wt% of iron oxide, 51.67 wt% of calcium oxide, 1.60 wt% of magnesium oxide, 0.15 wt% of potassium oxide, 0.08 wt% of sodium oxide and 0.18 wt% of alkali.
3. The process for producing airport road cement of claim 1, wherein: the fly ash comprises the following chemical components: a Loss content of 21.84 wt%, a silica content of 37.95 wt%, an alumina content of 25.77 wt%, an iron oxide content of 5.21 wt%, a calcium oxide content of 4.50 wt%, a magnesium oxide content of 0.61 wt%, a potassium oxide content of 0.62 wt%, a sodium oxide content of 0.18 wt% and an alkali content of 0.59 wt%.
4. The process for producing airport road cement of claim 1, wherein: the converter slag comprises the following chemical components: a Loss content of 3.64 wt%, a silica content of 15.37 wt%, an alumina content of 3.63 wt%, an iron oxide content of 25.07 wt%, a calcium oxide content of 38.60 wt%, a magnesium oxide content of 7.19 wt%, a potassium oxide content of 0.16 wt%, a sodium oxide content of 0.19 wt% and an alkali content of 0.30 wt%.
5. The process for producing airport road cement of claim 1, wherein: the silica consists of the following chemical components: 0.95 wt% of Loss, 91.97 wt% of silica, 1.72 wt% of alumina, 0.80 wt% of iron oxide, 2.53 wt% of calcium oxide, 0.81 wt% of magnesium oxide, 0.09 wt% of potassium oxide, 0.11 wt% of sodium oxide and 0.17 wt% of alkali.
6. The process for producing airport road cement of claim 1, wherein: the ground raw powder consists of the following chemical components: 13.42 wt% of silicon oxide, 3.06 wt% of aluminum oxide, 2.56 wt% of iron oxide, 42.04 wt% of calcium oxide, 2.26 wt% of magnesium oxide, 0.30 wt% of alkali and 0.14 wt% of sulfur trioxide.
7. The process for producing airport road cement of claim 1, wherein: the homogenized green powder consisted of the following chemical components: 13.30 wt% of silicon oxide, 3.13 wt% of aluminum oxide, 2.49 wt% of iron oxide, 42.02 wt% of calcium oxide, 2.00 wt% of magnesium oxide, 0.32 wt% of alkali and 0.15 wt% of sulfur trioxide.
8. The process for producing airport road cement of claim 1, wherein: the values of the trisections of the homogenized green powder were 0.96. + -. 0.02 for KH, 2.40. + -. 0.10 for SM and 1.20. + -. 0.10 for IM, respectively.
9. The process for producing airport road cement of claim 1, wherein: the clinker rate index is KH ═ 0.88 + -0.02, SM ═ 2.30 + -0.10 and IM ═ 1.30 + -0.10, and the clinker free calcium is less than or equal to 1.0% and clinker C3A is less than or equal to 7.0%.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111253095A (en) * | 2020-03-14 | 2020-06-09 | 天瑞集团汝州水泥有限公司 | Special road retarding cement |
| CN112897911A (en) * | 2021-02-04 | 2021-06-04 | 中国葛洲坝集团水泥有限公司 | Curing agent and method for reducing leaching toxicity of manganese element in cement |
| CN115231838A (en) * | 2022-07-29 | 2022-10-25 | 四川峨胜水泥集团股份有限公司 | Cement for civil airport cement concrete pavement and preparation method thereof |
| CN115286267A (en) * | 2022-08-18 | 2022-11-04 | 河北鼎星水泥有限公司 | Low-alkali high-strength cement clinker and processing technology thereof |
| CN116143431A (en) * | 2022-12-06 | 2023-05-23 | 陕西富平生态水泥有限公司 | Method for preparing low-alkaline cement clinker by using clay |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649628A (en) * | 2011-10-13 | 2012-08-29 | 内蒙古蒙西水泥股份有限公司 | Method for producing super-low-alkali silicate cement clinker by using industrial waste residue on 5KT/D dry-process kiln |
| CN102659326A (en) * | 2012-04-17 | 2012-09-12 | 新疆天山水泥股份有限公司 | Low-alkaline sulphur-resisting portland cement for road and production method thereof |
| CN103864321A (en) * | 2014-03-19 | 2014-06-18 | 广西鱼峰集团有限公司 | Portland cement for roads and production method thereof |
| CN110330244A (en) * | 2019-08-13 | 2019-10-15 | 中国建筑材料科学研究总院有限公司 | It a kind of road surface quickly repairs with road cement and preparation method thereof |
-
2020
- 2020-01-21 CN CN202010072174.4A patent/CN111170664B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649628A (en) * | 2011-10-13 | 2012-08-29 | 内蒙古蒙西水泥股份有限公司 | Method for producing super-low-alkali silicate cement clinker by using industrial waste residue on 5KT/D dry-process kiln |
| CN102659326A (en) * | 2012-04-17 | 2012-09-12 | 新疆天山水泥股份有限公司 | Low-alkaline sulphur-resisting portland cement for road and production method thereof |
| CN103864321A (en) * | 2014-03-19 | 2014-06-18 | 广西鱼峰集团有限公司 | Portland cement for roads and production method thereof |
| CN110330244A (en) * | 2019-08-13 | 2019-10-15 | 中国建筑材料科学研究总院有限公司 | It a kind of road surface quickly repairs with road cement and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| 吕新锋等: "钢渣作铁质校正原料在1000 t／d熟料线上的应用", 《新世纪水泥导报》 * |
| 左明扬等: "《水泥生产工艺技术》", 31 May 2013, 武汉：武汉理工大学出版社 * |
| 李斌怀: "《预分解窑水泥生产技术与操作》", 31 December 2010, 武汉：武汉理工大学出版社 * |
| 李贺林: "《"十二五"中国水泥工业发展研究报告》", 31 October 2011, 北京：中国建材工业出版社 * |
| 鲁太平: "《葛洲坝水泥厂志》", 31 March 1996, 北京：中国建材工业出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111253095A (en) * | 2020-03-14 | 2020-06-09 | 天瑞集团汝州水泥有限公司 | Special road retarding cement |
| CN112897911A (en) * | 2021-02-04 | 2021-06-04 | 中国葛洲坝集团水泥有限公司 | Curing agent and method for reducing leaching toxicity of manganese element in cement |
| CN115231838A (en) * | 2022-07-29 | 2022-10-25 | 四川峨胜水泥集团股份有限公司 | Cement for civil airport cement concrete pavement and preparation method thereof |
| CN115231838B (en) * | 2022-07-29 | 2023-07-11 | 四川峨胜水泥集团股份有限公司 | Cement for cement concrete pavement of civil airport and preparation method thereof |
| CN115286267A (en) * | 2022-08-18 | 2022-11-04 | 河北鼎星水泥有限公司 | Low-alkali high-strength cement clinker and processing technology thereof |
| CN116143431A (en) * | 2022-12-06 | 2023-05-23 | 陕西富平生态水泥有限公司 | Method for preparing low-alkaline cement clinker by using clay |
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