CN112745044A - Ferrous powder sludge substituted ferrous raw material cement and preparation method thereof - Google Patents
Ferrous powder sludge substituted ferrous raw material cement and preparation method thereof Download PDFInfo
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- CN112745044A CN112745044A CN202011549048.XA CN202011549048A CN112745044A CN 112745044 A CN112745044 A CN 112745044A CN 202011549048 A CN202011549048 A CN 202011549048A CN 112745044 A CN112745044 A CN 112745044A
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- Prior art keywords
- parts
- raw material
- iron
- sludge
- ferrous
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Classifications
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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
-
- 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
- C04B7/22—Iron ore cements ; Iron rich cements, e.g. Ferrari cements, Kühl cements
-
- 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
-
- 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
Abstract
The invention discloses iron powder sludge for replacing ferrous raw material cement, which comprises the following components in parts by weight: 60-68 parts of limestone, 6-10 parts of sandstone, 6-8 parts of carbide slag, 2-3 parts of iron raw materials, 6-12 parts of iron ore sludge, 2-3 parts of filter residues and 2-3 parts of shale; the invention also provides a preparation method of the ferrous powder sludge for replacing ferrous raw material cement, which comprises the following steps: and S1, adding limestone, sandstone, carbide slag, an iron raw material, iron ore sludge, filter residues and shale into a mixing device in proportion, and uniformly mixing through the mixing device to obtain a mixed material. The invention reduces the production cost, creates considerable economic benefit, creates additional tax for the country, realizes waste utilization, protects the environment, has good social reaction, realizes win-win of economic development and environmental protection, and forms a good situation of local and enterprise collaborative development by reasonably matching and using the iron ore sludge.
Description
Technical Field
The invention relates to the technical field of cement manufacturing, in particular to ferrous powder sludge cement for replacing ferrous raw material and a preparation method thereof.
Background
In Yinan province, the iron raw materials in the production places in Lanling county are used after being put into operation from the building factory: the iron ore has moderate iron content and less harmful components, but the transport distance is long, the transport cost price is relatively high, so that the production cost is reduced, the search and selection are carried out for many times around the Yinan county, finally, the Yishui county has found that iron ore mining enterprises exist, but the Yishui county has been shut down for years, the local government is contacted, the local population is visited, finally, a waste iron ore dressing sludge storage place is found in the West of Yishui county, the field storage amount is large, other manufacturers do not use the waste iron ore dressing sludge, and the sampling detection shows that the harmful components are high (mainly MgO), so that the waste iron ore sludge at the place is not used by the manufacturers for many years.
But the waste iron ore sludge is not used any more, so that the environment is polluted and the waste iron ore sludge is not easy to treat; if iron ore sludge is used for replacing part of iron ore raw materials to realize the manufacture of cement, a large part of economic cost is saved, and meanwhile, harmful substances can be recycled to reduce the pollution to the environment, so that the iron powder sludge is designed to replace the iron raw material cement and the preparation method thereof.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides iron powder sludge for replacing ferrous raw material cement and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
iron powder sludge replaces iron raw material cement, and the iron powder sludge comprises the following components in parts by weight: 60-68 parts of limestone, 6-10 parts of sandstone, 6-8 parts of carbide slag, 2-3 parts of iron raw materials, 6-12 parts of iron ore sludge, 2-3 parts of filter residues and 2-3 parts of shale.
Preferably, the content of Ca (OH)2 in the carbide slag is more than or equal to 85 percent, and the filter residue contains 18-28 percent of SiO2, 35-40 percent of Al2O3, 6-10 percent of CaO and impurities.
Preferably, the composition comprises the following components in parts by weight: 63-65 parts of limestone, 7-9 parts of sandstone, 6.5-7.5 parts of carbide slag, 2.25-2.75 parts of iron raw material, 8-10 parts of iron ore sludge, 2.25-2.75 parts of filter residue and 2.25-2.75 parts of shale.
Preferably, the composition comprises the following components in parts by weight: 64 parts of limestone, 8 parts of sandstone, 7 parts of carbide slag, 2.5 parts of iron raw materials, 10 parts of iron ore sludge, 2.5 parts of filter residues and 2.5 parts of shale.
The invention also provides a preparation method of the ferrous powder sludge for replacing ferrous raw material cement, which comprises the following steps:
s1, adding limestone, sandstone, carbide slag, an iron raw material, iron ore sludge, filter residues and shale into a mixing device in proportion, and uniformly mixing through the mixing device to obtain a mixed material;
s2, adding the mixed material in the S1 into grinding equipment, and grinding and crushing the mixed material to obtain raw material powder;
s3, adding the raw material powder in the S2 into a rotary kiln to be fired into clinker particles, and then taking out the clinker particles and cooling;
and S4, adding a retarder into the cooled clinker particles in the step S3, mixing and stirring to obtain a cement finished product.
Preferably, the index of MgO in the clinker particles in S3 is improved by 0.15%.
The beneficial effects of the invention are as follows:
the invention reduces the production cost, creates considerable economic benefit, creates additional tax for the country, realizes waste utilization, protects the environment, has good social reaction, realizes win-win of economic development and environmental protection, and forms a good situation of local and enterprise collaborative development by reasonably matching and using the iron ore sludge.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
The embodiment provides iron powder sludge for replacing iron raw material cement, which comprises the following components in parts by weight: 60-68 parts of limestone, 6-10 parts of sandstone, 6-8 parts of carbide slag, 2-3 parts of iron raw materials, 6-12 parts of iron ore sludge, 2-3 parts of filter residues and 2-3 parts of shale; the content of Ca (OH)2 in the carbide slag is more than or equal to 85 percent, and the filter residue contains 18-28 percent of SiO2, 35-40 percent of Al2O3, 6-10 percent of CaO and impurities.
The embodiment also provides a preparation method of the iron powder sludge for replacing ferrous raw material cement, which comprises the following steps:
s1, adding limestone, sandstone, carbide slag, an iron raw material, iron ore sludge, filter residues and shale into a mixing device in proportion, and uniformly mixing through the mixing device to obtain a mixed material;
s2, adding the mixed material in the S1 into grinding equipment, and grinding and crushing the mixed material to obtain raw material powder;
s3, adding the raw material powder in the S2 into a rotary kiln to be fired into clinker particles, and then taking out the clinker particles and cooling;
and S4, adding a retarder into the cooled clinker particles in the step S3, mixing and stirring to obtain a cement finished product.
The invention also includes that the index of MgO in the clinker particles in the S3 is improved by 0.15%.
Example 2
The embodiment provides iron powder sludge for replacing iron raw material cement, which comprises the following components in parts by weight: 63-65 parts of limestone, 7-9 parts of sandstone, 6.5-7.5 parts of carbide slag, 2.25-2.75 parts of iron raw material, 8-10 parts of iron ore sludge, 2.25-2.75 parts of filter residue and 2.25-2.75 parts of shale; the content of Ca (OH)2 in the carbide slag is more than or equal to 85 percent, and the filter residue contains 18-28 percent of SiO2, 35-40 percent of Al2O3, 6-10 percent of CaO and impurities.
The embodiment also provides a preparation method of the iron powder sludge for replacing ferrous raw material cement, which comprises the following steps:
s1, adding limestone, sandstone, carbide slag, an iron raw material, iron ore sludge, filter residues and shale into a mixing device in proportion, and uniformly mixing through the mixing device to obtain a mixed material;
s2, adding the mixed material in the S1 into grinding equipment, and grinding and crushing the mixed material to obtain raw material powder;
s3, adding the raw material powder in the S2 into a rotary kiln to be fired into clinker particles, and then taking out the clinker particles and cooling;
and S4, adding a retarder into the cooled clinker particles in the step S3, mixing and stirring to obtain a cement finished product.
The invention also includes that the index of MgO in the clinker particles in the S3 is improved by 0.15%.
Example 3
The embodiment provides iron powder sludge for replacing iron raw material cement, which comprises the following components in parts by weight: 63 parts of limestone, 7 parts of sandstone, 6.5 parts of carbide slag, 2.25 parts of iron raw material, 8 parts of iron ore sludge, 2.25 parts of filter residue and 2.25 parts of shale; the content of Ca (OH)2 in the carbide slag is more than or equal to 85 percent, and the filter residue contains 18-28 percent of SiO2, 35-40 percent of Al2O3, 6-10 percent of CaO and impurities.
The embodiment also provides a preparation method of the iron powder sludge for replacing ferrous raw material cement, which comprises the following steps:
s1, adding limestone, sandstone, carbide slag, an iron raw material, iron ore sludge, filter residues and shale into a mixing device in proportion, and uniformly mixing through the mixing device to obtain a mixed material;
s2, adding the mixed material in the S1 into grinding equipment, and grinding and crushing the mixed material to obtain raw material powder;
s3, adding the raw material powder in the S2 into a rotary kiln to be fired into clinker particles, and then taking out the clinker particles and cooling;
and S4, adding a retarder into the cooled clinker particles in the step S3, mixing and stirring to obtain a cement finished product.
The invention also includes that the index of MgO in the clinker particles in the S3 is improved by 0.15%.
Example 4
The embodiment provides iron powder sludge for replacing iron raw material cement, which comprises the following components in parts by weight: 65 parts of limestone, 9 parts of sandstone, 7.5 parts of carbide slag, 2.75 parts of iron raw material, 10 parts of iron ore sludge, 2.75 parts of filter residue and 2.75 parts of shale; the content of Ca (OH)2 in the carbide slag is more than or equal to 85 percent, and the filter residue contains 18-28 percent of SiO2, 35-40 percent of Al2O3, 6-10 percent of CaO and impurities.
The embodiment also provides a preparation method of the iron powder sludge for replacing ferrous raw material cement, which comprises the following steps:
s1, adding limestone, sandstone, carbide slag, an iron raw material, iron ore sludge, filter residues and shale into a mixing device in proportion, and uniformly mixing through the mixing device to obtain a mixed material;
s2, adding the mixed material in the S1 into grinding equipment, and grinding and crushing the mixed material to obtain raw material powder;
s3, adding the raw material powder in the S2 into a rotary kiln to be fired into clinker particles, and then taking out the clinker particles and cooling;
and S4, adding a retarder into the cooled clinker particles in the step S3, mixing and stirring to obtain a cement finished product.
The invention also includes that the index of MgO in the clinker particles in the S3 is improved by 0.15%.
Example 5
The embodiment provides iron powder sludge for replacing iron raw material cement, which comprises the following components in parts by weight: 64 parts of limestone, 8 parts of sandstone, 7 parts of carbide slag, 2.5 parts of iron raw materials, 10 parts of iron ore sludge, 2.5 parts of filter residues and 2.5 parts of shale; the content of Ca (OH)2 in the carbide slag is more than or equal to 85 percent, and the filter residue contains 18-28 percent of SiO2, 35-40 percent of Al2O3, 6-10 percent of CaO and impurities.
The embodiment also provides a preparation method of the iron powder sludge for replacing ferrous raw material cement, which comprises the following steps:
s1, adding limestone, sandstone, carbide slag, an iron raw material, iron ore sludge, filter residues and shale into a mixing device in proportion, and uniformly mixing through the mixing device to obtain a mixed material;
s2, adding the mixed material in the S1 into grinding equipment, and grinding and crushing the mixed material to obtain raw material powder;
s3, adding the raw material powder in the S2 into a rotary kiln to be fired into clinker particles, and then taking out the clinker particles and cooling;
and S4, adding a retarder into the cooled clinker particles in the step S3, mixing and stirring to obtain a cement finished product.
The invention also includes that the index of MgO in the clinker particles in the S3 is improved by 0.15%.
The iron ore sludge of the invention: iron ore 4: 1, mixing, carefully observing the firing condition of the rotary kiln in the using process, and adjusting process parameters in time, so as to avoid influencing the firing of clinker due to the change of harmful components, and comprehensively evaluating the using effect by continuously groping and analyzing the components of raw materials and clinker, wherein the conclusion is that the rotary kiln can be normally used; by reasonably matching and using the iron ore sludge, the production cost is reduced, considerable economic benefits are created, additional taxes are created for the country, waste utilization is realized, the environment is protected, the social reaction is good, the win-win situation of economic development and environmental protection is realized, and a good situation of local and enterprise collaborative development is formed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The iron powder sludge replaces ferrous raw material cement and is characterized by comprising the following components in parts by weight: 60-68 parts of limestone, 6-10 parts of sandstone, 6-8 parts of carbide slag, 2-3 parts of iron raw materials, 6-12 parts of iron ore sludge, 2-3 parts of filter residues and 2-3 parts of shale.
2. The ferrous powder sludge as claimed in claim 1, instead of ferrous raw material cement, comprising the following components in parts by weight: 63-65 parts of limestone, 7-9 parts of sandstone, 6.5-7.5 parts of carbide slag, 2.25-2.75 parts of iron raw material, 8-10 parts of iron ore sludge, 2.25-2.75 parts of filter residue and 2.25-2.75 parts of shale.
3. The ferrous powder sludge as claimed in claim 1, instead of ferrous raw material cement, comprising the following components in parts by weight: 64 parts of limestone, 8 parts of sandstone, 7 parts of carbide slag, 2.5 parts of iron raw materials, 10 parts of iron ore sludge, 2.5 parts of filter residues and 2.5 parts of shale.
4. The iron powder sludge cement as claimed in claim 1, wherein the content of Ca (OH)2 in the carbide slag is not less than 85%, and the filter residue contains 18-28% of SiO2, 35-40% of Al2O3, 6-10% of CaO and impurities.
5. The preparation method of the ferrous powder sludge for replacing ferrous raw material cement is characterized by comprising the following steps:
s1, adding limestone, sandstone, carbide slag, an iron raw material, iron ore sludge, filter residues and shale into a mixing device in proportion, and uniformly mixing through the mixing device to obtain a mixed material;
s2, adding the mixed material in the S1 into grinding equipment, and grinding and crushing the mixed material to obtain raw material powder;
s3, adding the raw material powder in the S2 into a rotary kiln to be fired into clinker particles, and then taking out the clinker particles and cooling;
and S4, adding a retarder into the cooled clinker particles in the step S3, mixing and stirring to obtain a cement finished product.
6. The method for preparing ferrous powder sludge to replace ferrous raw material cement according to claim 1, wherein the index of MgO in clinker particles in S3 is increased by 0.15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011549048.XA CN112745044A (en) | 2020-12-24 | 2020-12-24 | Ferrous powder sludge substituted ferrous raw material cement and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011549048.XA CN112745044A (en) | 2020-12-24 | 2020-12-24 | Ferrous powder sludge substituted ferrous raw material cement and preparation method thereof |
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| CN112745044A true CN112745044A (en) | 2021-05-04 |
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| CN202011549048.XA Pending CN112745044A (en) | 2020-12-24 | 2020-12-24 | Ferrous powder sludge substituted ferrous raw material cement and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045354A (en) * | 2016-05-23 | 2016-10-26 | 临沂中联水泥有限公司 | Method for producing silicate clinker by utilizing iron powder sludge raw material |
| CN110482885A (en) * | 2019-09-20 | 2019-11-22 | 四川永祥新材料有限公司 | A kind of portland cement composition of raw materials and portland cement preparation method |
| CN111170662A (en) * | 2019-12-27 | 2020-05-19 | 大冶尖峰水泥有限公司 | Method for producing low-alkali cement from iron ore mining waste soil |
-
2020
- 2020-12-24 CN CN202011549048.XA patent/CN112745044A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045354A (en) * | 2016-05-23 | 2016-10-26 | 临沂中联水泥有限公司 | Method for producing silicate clinker by utilizing iron powder sludge raw material |
| CN110482885A (en) * | 2019-09-20 | 2019-11-22 | 四川永祥新材料有限公司 | A kind of portland cement composition of raw materials and portland cement preparation method |
| CN111170662A (en) * | 2019-12-27 | 2020-05-19 | 大冶尖峰水泥有限公司 | Method for producing low-alkali cement from iron ore mining waste soil |
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Application publication date: 20210504 |
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