CN112759289A - Cement raw material additive with grinding-aid and decomposition-promoting effects - Google Patents
Cement raw material additive with grinding-aid and decomposition-promoting effects Download PDFInfo
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- CN112759289A CN112759289A CN202011621301.8A CN202011621301A CN112759289A CN 112759289 A CN112759289 A CN 112759289A CN 202011621301 A CN202011621301 A CN 202011621301A CN 112759289 A CN112759289 A CN 112759289A
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- grinding
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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
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
- C04B7/42—Active ingredients added before, or during, the burning process
- C04B7/428—Organic 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
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
- C04B7/42—Active ingredients added before, or during, the burning process
- C04B7/421—Inorganic materials
- C04B7/424—Oxides, Hydroxides
-
- 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
- C04B7/42—Active ingredients added before, or during, the burning process
- C04B7/421—Inorganic materials
- C04B7/425—Acids or salts thereof
Abstract
The invention discloses a cement raw material additive with grinding-aid and decomposition-promoting effects, belonging to the technical field of building materials. The raw material additive comprises 10-40% of grinding-aid components, 10-40% of organic acid, 10-40% of mineralization components and the balance of water. The cement raw material admixture with grinding-aid and decomposition-promoting functions and excellent comprehensive performance is obtained by reasonably proportioning the grinding-aid components, the organic acid components and the mineralization components in the additive. The grinding-aid components can obviously improve the fineness of the raw materials entering the kiln when the raw materials are used for a bench; the addition of the organic acid can reduce the decomposition surface activation energy of the calcium carbonate, further reduce the decomposition temperature of the calcium carbonate and accelerate the decomposition of the calcium carbonate; the addition of the mineralizing component can reduce the firing temperature of cement clinker, improve the easy firing property of the clinker and improve the 28d strength of the cement clinker by more than 3 MPa.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a cement raw material additive with grinding-aid and decomposition-promoting effects.
Background
The cement is one of three basic materials in the construction industry, has wide use and large use amount, and is called as 'grains in the construction industry'.
At present, the central topic of the world cement industry is still the problem of resource, energy and environment protection, and the addition of various cement additives is an effective way to reduce the energy consumption and environmental pollutant emission in cement production. At present, the types of domestic cement additives mainly comprise a cement grinding aid, a sulfur fixing agent, a mineralizer, a coal-saving combustion improver and the like, and are respectively aimed at the fields of cement grinding, flue gas desulfurization, cement sintering, coal combustion supporting and the like, but the research on the fields of improving cement raw meal grinding aid, catalyzing calcium carbonate decomposition, enhancing cement clinker and the like is less.
The cement which is mainly concentrated in the domestic cement raw material additive is mineralized into one block, and most of the cement raw material additive is compounded by one or more of fluorite, phosphorite slag, various metal tailings, gypsum and the like, although the effect is more obvious, the following defects also exist: (1) the mixing amount is larger, generally more than 1%; (2) the dosage of the powder is adopted, and the metering is inaccurate; (3) the adopted tailings have large quality fluctuation, and the fluctuation of the working condition of the cement kiln is obvious; (4) the tailings are distributed regionally obviously, and the transportation radius is limited.
Patents CN 110240427A, CN 110240426a and CN 109824284a disclose that several chemical waste liquids and alkaline enhancers are compounded as cement raw material additives, respectively, which can increase the yield, reduce the coal consumption, improve the easy combustibility of raw material and improve the comprehensive effect of desulfurization. But has the following drawbacks: (1) the adopted chemical waste liquid belongs to hazardous waste, and can cause harm to human health in production and transportation; (2) the chemical waste liquid has unstable components, large product quality fluctuation and limited sources, and is difficult to popularize and apply comprehensively; (3) the cement clinker aggregate contains a large amount of sodium, potassium and magnesium, belongs to harmful components in cement production, and seriously influences the cement firing condition and the cement clinker quality.
Disclosure of Invention
Aiming at the problems, the invention adopts the method for preparing the cement raw material additive with low mixing amount and stable quality to improve the vertical grinding table time of the cement raw material and reduce the cement burning coal consumption and SO2And NOXDischarge amount and improve the strength of cement clinker. In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
the cement raw material admixture with grinding-aid and decomposition-promoting effects is prepared from the following raw materials in percentage by weight: 10-40% of grinding-aid component, 10-40% of organic acid, 10-40% of mineralizing component and the balance of water.
Preferably, the cement raw material admixture with grinding aid and decomposition promotion functions is prepared from the following raw materials in percentage by weight: grinding aid component 20%, organic acid 40%, mineralizing component 10%, and water in balance
Preferably, the grinding aid component is one or more of hydroxymethyl cellulose, tetrahydroxypropyl ethylenediamine, hexamethylenetetramine and triglycerin.
Preferably, the grinding aid component is prepared by mixing hexamethylenetetramine, hydroxymethyl cellulose, tetrahydroxypropyl ethylenediamine and triglycerin according to a mass ratio of 30:1:40: 30.
Preferably, the organic acid component is one or more of glycolic acid, oxalic acid and sulfanilic acid.
Preferably, the organic acid component oxalic acid, glycolic acid and sulfanilic acid are mixed according to the mass ratio of 4:5: 3.
Preferably, the mineralizing component is one or more of manganese acetate, zinc nitrate, titanium potassium oxalate, lithium acetate and copper nitrate.
Preferably, the mineralization component is obtained by mixing manganese acetate, zinc nitrate, titanium potassium oxalate and lithium acetate according to a mass ratio of 9:7:2:3: 1.
Advantageous effects
The cement raw material admixture with grinding-aid and decomposition-promoting functions and excellent comprehensive performance is obtained by reasonably proportioning the grinding-aid components, the organic acid components and the mineralization components in the additive. Hexamethylenetetramine, hydroxymethyl cellulose, tetrahydroxypropyl ethylenediamine, triglycerin and the like are taken as grinding-aid components, so that the fineness of the raw material entering a kiln can be improved when the raw material is used for a bench; the addition of the organic acid oxalic acid, the glycolic acid and the sulfanilic acid can reduce the surface activation energy of the decomposition of the calcium carbonate, further reduce the decomposition temperature of the calcium carbonate and accelerate the decomposition of the calcium carbonate; the addition of mineralized components of manganese acetate, zinc nitrate, potassium titanium oxalate and lithium acetate can reduce the firing temperature of the cement clinker, improve the easy firing property of the clinker, improve the 28d strength of the cement clinker by more than 3MPa, and reduce the generation of thermal nitrogen oxides and the emission of sulfur dioxide. The raw material additive has the advantages of high-efficiency auxiliary effect, stable quality, aqueous solution, safety, no harm, accurate measurement, convenient production and transportation, and obvious effect, and the raw material additive is a mixture of 0.5-2 per mill.
Detailed Description
The technical solution of the present invention is further described below with reference to specific embodiments, but is not limited thereto.
Example 1
The cement raw material admixture with grinding-aid and decomposition-promoting effects is prepared from the following raw materials in percentage by weight: grinding aid component 20%, organic acid 40%, mineralizing component 10%, and water in balance
The grinding-aid components are obtained by mixing hexamethylenetetramine, hydroxymethyl cellulose, tetrahydroxypropyl ethylenediamine and triglycerin according to a mass ratio of 30:1:40: 30.
The organic acid component oxalic acid, glycolic acid and sulfanilic acid are mixed according to the mass ratio of 4:5: 3.
The mineralization component is obtained by mixing manganese acetate, zinc nitrate, titanium potassium oxalate and lithium acetate according to a mass ratio of 9:7:2:3: 1.
Example 2
The cement raw material admixture with grinding-aid and decomposition-promoting effects is prepared from the following raw materials in percentage by weight: 40% of grinding aid component, 40% of organic acid, 10% of mineralization component and the balance of water.
The grinding-aid components are obtained by mixing hexamethylenetetramine, hydroxymethyl cellulose, tetrahydroxypropyl ethylenediamine and triglycerin according to a mass ratio of 30:1:40: 30.
The organic acid component oxalic acid, glycolic acid and sulfanilic acid are mixed according to the mass ratio of 4:5: 3.
The mineralization component is obtained by mixing manganese acetate, zinc nitrate, titanium potassium oxalate and lithium acetate according to a mass ratio of 9:7:2:3: 1.
Example 3
The cement raw material admixture with grinding-aid and decomposition-promoting effects is prepared from the following raw materials in percentage by weight: grinding aid component 10%, organic acid 10%, mineralizing component 40% and water in balance.
The grinding-aid components are obtained by mixing hexamethylenetetramine, hydroxymethyl cellulose, tetrahydroxypropyl ethylenediamine and triglycerin according to a mass ratio of 30:1:40: 30.
The organic acid component oxalic acid, glycolic acid and sulfanilic acid are mixed according to the mass ratio of 4:5: 3.
The mineralization component is obtained by mixing manganese acetate, zinc nitrate, titanium potassium oxalate and lithium acetate according to a mass ratio of 9:7:2:3: 1.
Example 4
The cement raw material admixture with grinding-aid and decomposition-promoting effects is prepared from the following raw materials in percentage by weight: grinding aid component 20%, organic acid 30%, mineralizing component 20% and water in balance.
The grinding-aid components are obtained by mixing hexamethylenetetramine, hydroxymethyl cellulose, tetrahydroxypropyl ethylenediamine and triglycerin according to a mass ratio of 30:1:40: 30.
The organic acid component oxalic acid, glycolic acid and sulfanilic acid are mixed according to the mass ratio of 4:5: 3.
The mineralization component is obtained by mixing manganese acetate, zinc nitrate, titanium potassium oxalate and lithium acetate according to a mass ratio of 9:7:2:3: 1.
Example 5
The cement raw material admixture with grinding-aid and decomposition-promoting effects is prepared from the following raw materials in percentage by weight: 30% of grinding aid component, 30% of organic acid, 30% of mineralization component and the balance of water.
The grinding-aid components are obtained by mixing hexamethylenetetramine, hydroxymethyl cellulose, tetrahydroxypropyl ethylenediamine and triglycerin according to a mass ratio of 30:1:40: 30.
The organic acid component oxalic acid, glycolic acid and sulfanilic acid are mixed according to the mass ratio of 4:5: 3.
The mineralization component is obtained by mixing manganese acetate, zinc nitrate, titanium potassium oxalate and lithium acetate according to a mass ratio of 9:7:2:3: 1. Comparative example 1 (without tetrahydroxypropyl ethylenediamine)
The cement raw material admixture is prepared from the following raw materials in percentage by weight: grinding aid component 20%, organic acid 40%, mineralizing component 10%, and water in balance
The grinding-aid components are obtained by mixing hexamethylenetetramine, hydroxymethyl cellulose and triglycerin according to the mass ratio of 30:1: 30.
The organic acid component oxalic acid, glycolic acid and sulfanilic acid are mixed according to the mass ratio of 4:5: 3.
The mineralization component is obtained by mixing manganese acetate, zinc nitrate, titanium potassium oxalate and lithium acetate according to a mass ratio of 9:7:2:3: 1.
Comparative example 2 (without titanium Potassium oxalate)
The cement raw material admixture is prepared from the following raw materials in percentage by weight: grinding aid component 10%, organic acid 40%, mineralizing component 10%, and water in balance
The grinding-aid components are obtained by mixing hexamethylenetetramine, hydroxymethyl cellulose, tetrahydroxypropyl ethylenediamine and triglycerin according to a mass ratio of 30:1:40: 30.
The organic acid component oxalic acid, glycolic acid and sulfanilic acid are mixed according to the mass ratio of 4:5: 3.
The mineralization component is obtained by mixing manganese acetate, zinc nitrate and lithium acetate according to a mass ratio of 9:7:3: 1.
Comparative example 3 (without sulfanilic acid)
The cement raw material admixture is prepared from the following raw materials in percentage by weight: grinding aid component 10%, organic acid 40%, mineralizing component 10%, and water in balance
The grinding-aid components are obtained by mixing hexamethylenetetramine, hydroxymethyl cellulose, tetrahydroxypropyl ethylenediamine and triglycerin according to a mass ratio of 30:1:40: 30.
The organic acid component oxalic acid and glycolic acid are mixed according to the mass ratio of 4: 5.
The mineralization component is obtained by mixing manganese acetate, zinc nitrate, titanium potassium oxalate and lithium acetate according to a mass ratio of 9:7:2:3: 1.
Performance testing
Properties of raw meal
Taking raw materials of Jining sea snail cement Limited liability company as experimental samples, drying and crushing the raw materials, and then uniformly stirring to simulate actual cement raw materials of a factory, namely limestone: sandstone: iron ore: the shale is prepared according to the proportion of 85:6.9:4.5:3.6(W/W), 5000g of shale is ground by small grinding every time, and the set time of grinding is 9 minutes.
TABLE 1 grinding aid Performance results for the raw meal
Decomposition rate
Raw material powder of Jining sea snail cement company Limited is taken, the raw material powder is dried for 1h at the temperature of 105 ℃, cement raw material additives are uniformly mixed with the raw material powder according to different mixing amounts, 1g of the mixed raw material powder is loaded in each cupel, after the mixture is uniformly spread, the mixture is respectively calcined for 30min at the temperature of 650 ℃ and 750 ℃, and the loss on ignition is measured, and the results are shown in Table 2:
TABLE 2 decomposition Rate test results
Calcination performance of cement clinker
Taking raw meal powder of Jining sea snail cement Limited company, drying the raw meal powder at 100 ℃ for 1h, transferring the raw meal powder to a high-temperature furnace for calcining for 30 minutes at 950 ℃, then quickly transferring the raw meal powder to the high-temperature furnace for measuring free calcium oxide at 1350 ℃ and 1450 ℃, taking clinker calcined at 1450 ℃ for measuring the strength of 3d and 28d (the measuring method refers to GB T21372-2008 silicate cement clinker):
TABLE 3 Cement Clinker Strength test
It should be noted that the above-mentioned embodiments are only some of the preferred modes for implementing the invention, and not all of them. Obviously, all other embodiments obtained by persons of ordinary skill in the art based on the above-mentioned embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
Claims (8)
1. The cement raw material admixture with grinding-aid and decomposition-promoting effects is characterized by being prepared from the following raw materials in percentage by weight: 10-40% of grinding-aid component, 10-40% of organic acid, 10-40% of mineralizing component and the balance of water.
2. The admixture for cement raw meal with grinding aiding and decomposition promoting effects of claim 1 is characterized by being prepared from the following raw materials in percentage by weight: grinding aid component 20%, organic acid 40%, mineralizing component 10% and water in balance.
3. The admixture for cement raw material with grinding aid and decomposition promoting effects as claimed in claim 1 or 2, wherein the grinding aid component is one or more of hydroxymethyl cellulose, tetrahydroxypropyl ethylenediamine, hexamethylenetetramine and triglycerin.
4. The admixture for cement raw meal with grinding aid and decomposition promotion functions of claim 3, wherein the grinding aid components are hexamethylenetetramine, hydroxymethyl cellulose, tetrahydroxypropyl ethylenediamine and triglycerin which are mixed according to a mass ratio of 30:1:40: 30.
5. The admixture for cement raw material with grinding aid and decomposition promoting effects as claimed in claim 1 or 2, wherein the organic acid component is one or more of glycolic acid, oxalic acid and sulfanilic acid.
6. The admixture for cement raw material with grinding aid and decomposition promoting effects as claimed in claim 5, wherein the organic acid components oxalic acid, glycolic acid and sulfanilic acid are mixed according to a mass ratio of 4:5: 3.
7. The admixture for cement raw meal with grinding aid and decomposition promoting effects as claimed in claim 1 or 2, wherein the mineralizing component is one or more of manganese acetate, zinc nitrate, potassium titanium oxalate, lithium acetate and copper nitrate.
8. The admixture for cement raw meal with grinding aid and decomposition promoting effects as recited in claim 6, wherein the mineralizing component is obtained by mixing manganese acetate, zinc nitrate, copper nitrate, potassium titanium oxalate and lithium acetate according to a mass ratio of 9:7:2:3: 1.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113480231A (en) * | 2021-08-24 | 2021-10-08 | 山东众森科技股份有限公司 | Energy-saving cement raw material grinding aid and preparation method thereof |
| CN113800796A (en) * | 2021-11-02 | 2021-12-17 | 南京永能新材料有限公司 | Cement raw material additive and preparation method thereof |
| CN115353307A (en) * | 2022-08-19 | 2022-11-18 | 安徽海螺制剂工程技术有限公司 | Composite liquid raw material mineralizer |
| CN115557720A (en) * | 2022-10-28 | 2023-01-03 | 安徽海螺制剂工程技术有限公司 | Cement clinker mineralization reinforcing agent |
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Cited By (4)
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| CN113480231A (en) * | 2021-08-24 | 2021-10-08 | 山东众森科技股份有限公司 | Energy-saving cement raw material grinding aid and preparation method thereof |
| CN113800796A (en) * | 2021-11-02 | 2021-12-17 | 南京永能新材料有限公司 | Cement raw material additive and preparation method thereof |
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| CN115557720A (en) * | 2022-10-28 | 2023-01-03 | 安徽海螺制剂工程技术有限公司 | Cement clinker mineralization reinforcing agent |
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