CN111285661B - Preparation process of manganese slag and red mud baking-free brick - Google Patents
Preparation process of manganese slag and red mud baking-free brick Download PDFInfo
- Publication number
- CN111285661B CN111285661B CN202010107507.2A CN202010107507A CN111285661B CN 111285661 B CN111285661 B CN 111285661B CN 202010107507 A CN202010107507 A CN 202010107507A CN 111285661 B CN111285661 B CN 111285661B
- Authority
- CN
- China
- Prior art keywords
- red mud
- manganese slag
- brick
- baking
- preparation process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
- C04B28/342—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders the phosphate binder being present in the starting composition as a mixture of free acid and one or more reactive oxides
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a preparation process of a manganese slag and red mud baking-free brick, which takes manganese slag, red mud, water and 85% phosphoric acid as raw materials, the manganese slag and red mud are mechanically crushed and sieved firstly, then the raw materials are sieved, the obtained powder is mixed according to a certain mass ratio, water is added for stirring to form slurry, then phosphoric acid solution is added for mixing and stirring reaction, the slurry is placed in a brick making machine for compression molding, and after a brick blank is molded, pressure maintaining and heat preservation maintenance are carried out, thus obtaining the finished product baking-free brick. The invention is a resource utilization scheme for cooperatively treating manganese slag and red mud, the scheme has the advantages of simple preparation process, no need of calcination, energy conservation and environmental protection, and the prepared manganese slag and red mud baking-free brick has high compressive strength and low cost, and can be widely used for building filling blocks.
Description
Technical Field
The invention relates to the technical field of comprehensive utilization of industrial solid wastes, in particular to a preparation process of a manganese slag and red mud baking-free brick.
Background
At present, solid/hollow bricks used in the traditional construction industry are mostly prepared by sintering clay and shale as raw materials at high temperature (900-1000 ℃), and have the following defects: firstly, natural resources are used as raw materials to destroy cultivated land resources, secondly, the preparation temperature is high, the energy consumption is high, and thirdly, harmful gases are generated in the sintering process to pollute the environment. The manganese slag is acidic waste slag generated by performing pressure filtration and solid-liquid separation on manganese carbonate ore after sulfuric acid leaching or pyrolusite ore after reduction and sulfuric acid leaching. The red mud is alkaline waste residue generated in the production process of alumina. At present, the most main treatment method of manganese slag and red mud is stacking in the open air in a slag yard, great pollution hidden trouble exists to peripheral soil and underground water, and a resource utilization method of manganese slag and red mud needs to be found urgently to solve the problems of the brick used in the traditional construction industry at present.
Disclosure of Invention
The invention aims to: aiming at the problems, a resource utilization scheme for the synergistic treatment of the manganese slag and the red mud is provided, the scheme has the advantages of simple preparation process, no need of calcination, energy conservation and environmental protection, and the prepared manganese slag and red mud baking-free brick has high compressive strength and low cost and can be widely used for building filling blocks.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
a preparation process of a manganese slag and red mud baking-free brick comprises the following steps:
(1) crushing and sieving: respectively collecting the manganese slag and the red mud, removing impurities, drying, respectively mechanically crushing, and sieving to obtain manganese slag powder and red mud powder;
(2) mixing the ingredients: weighing the manganese slag powder and the red mud powder obtained in the step (1) according to a proportion, adding the manganese slag powder and the red mud powder into a mixer, adding a certain amount of water according to a water adding proportion, and adjusting the atmosphere in the mixer to fully stir to obtain a mixture;
(3) mixing phosphoric acid: adding phosphoric acid into the mixture obtained in the step (2) according to a proportion, and stirring to enable the phosphoric acid to fully react to obtain mixed slurry for later use;
(4) green brick forming: putting a certain amount of the mixed slurry obtained in the step (3) into a brick making machine for compression molding to obtain a green brick;
(5) and (3) maintaining the brick body: and (3) placing the green bricks in a kiln for full curing at the temperature of 90-150 ℃ to obtain the manganese slag red mud baking-free bricks.
Further, in the step (1), the sieving mesh number is 100-200 meshes, and Fe in the manganese slag2O3Content and Fe3O4The sum of the contents of the Fe and the Fe in the red mud is not less than 15 percent2O3Content and Al2O3The sum of the contents is not less than 20 percent.
Further, in the step (2), the mass ratio of the manganese slag powder to the red mud powder is 0.25-4.0: 1, and the water adding ratio is 0.1-0.3 times of the total mass of the manganese slag powder and the red mud powder.
Further, in the step (3), the phosphoric acid is 85% phosphoric acid solution, the adding amount of the phosphoric acid solution is 0.2-0.9 times of the total mass of the manganese slag powder and the red mud powder, and the stirring is carried out to ensure that the reaction time is 10-60 min.
Further, in the step (5), the green brick is maintained at 90-150 ℃ and kept for standing for 3-10 days.
Further, the pressure maintaining is to increase the pressure for 1 to 2 hours, then stabilize the pressure for 7 to 9 hours and then reduce the pressure for 1 to 2 hours, thereby finishing the maintenance of the green brick.
The raw materials of the baking-free brick prepared by the preparation process of the manganese slag red mud baking-free brick consist of manganese slag, red mud, water and 85 percent of phosphoric acid.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the invention provides a resource utilization scheme for cooperatively treating manganese slag and red mud, the scheme has the advantages of simple preparation process, no need of calcination, energy conservation and environmental protection, and the prepared manganese slag and red mud baking-free brick has high compressive strength and low cost and can be widely used for building filling blocks. The preparation process is simple to operate, does not need special equipment, is easy to realize and has high economic value.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1
Preparation process of manganese slag and red mud baking-free brick, wherein Fe in manganese slag is used2O3Content and Fe3O4The sum of the contents of the red mud is 17.5 percent, and the used red mud contains Fe2O3Content and Al2O3The sum of the contents is 42.3 percent.
The preparation process comprises the following steps:
a. crushing and sieving: drying the manganese slag and the red mud, respectively mechanically crushing, and then respectively sieving through 100-mesh sieves;
b. preparing materials: weighing manganese slag and red mud according to the mass ratio of 0.25: 1, and adding the manganese slag and the red mud into a mixer;
c. adding water and stirring: adding water into a mixer according to the mass ratio of water to manganese slag to red mud of = 0.1, and stirring for 3 hours in an air atmosphere;
d. adding phosphoric acid and stirring: adding 85% phosphoric acid (manganese slag and red mud) = 0.2 into a mixer according to the mass ratio, and stirring for 10 min;
e. molding: compression molding by a brick making machine;
f. and (5) maintenance: and curing for 3 d at 90 ℃ to obtain the manganese slag red mud baking-free brick.
According to the HJ 557-. According to GB/T2542-2012 & lt test method for wall building bricks & gt, the compressive strength test of the baking-free brick provided by the embodiment 1 shows that the baking-free brick has the compressive strength of 26.8 MPa, meets the strength grade of MU25 national standard, and can be widely applied to building load-bearing filling blocks.
Example 2
Preparation process of manganese slag and red mud baking-free brick, wherein Fe in manganese slag is used2O3Content and Fe3O4The sum of the contents of the red mud is 17.5 percent, and the used red mud contains Fe2O3Content and Al2O3The sum of the contents is 42.3 percent.
The preparation process comprises the following steps:
a. crushing and sieving: drying the manganese slag and the red mud, respectively mechanically crushing, and then respectively sieving by a 200-mesh sieve;
b. preparing materials: weighing manganese slag and red mud according to the mass ratio of 4: 1, and adding the manganese slag and the red mud into a mixer;
c. adding water and stirring: adding water into a mixer according to the mass ratio of water to manganese slag to red mud of = 0.3, and stirring for 3 hours in an air atmosphere;
d. adding phosphoric acid and stirring: adding 85% phosphoric acid (manganese slag and red mud) = 0.9 into a mixer according to the mass ratio, and stirring for 60 min;
e. molding: compression molding by a brick making machine;
f. and (5) maintenance: and maintaining the mixture for 10 days at the temperature of 130 ℃ to obtain the manganese slag and red mud baking-free brick.
According to the HJ 557-. According to GB/T2542-2012 & lt test method for wall building bricks & gt, the compressive strength test of the baking-free brick provided by the embodiment 2 shows that the baking-free brick has the compressive strength of 32.9 MPa, meets the strength grade of MU30 national standard, and can be widely applied to building load-bearing filling blocks.
Example 3
Preparation process of manganese slag and red mud baking-free brick, wherein Fe in manganese slag is used2O3Content and Fe3O4The sum of the contents of the iron and the iron is 22.6 percent, and the used red mud contains Fe2O3Content and Al2O3The sum of the contents is 24.0 percent.
The preparation process comprises the following steps:
a. crushing and sieving: drying the manganese slag and the red mud, respectively mechanically crushing, and then respectively sieving through 100-mesh sieves;
b. preparing materials: weighing manganese slag and red mud according to the mass ratio of 1:1, and adding the manganese slag and the red mud into a mixer;
c. adding water and stirring: adding water into a mixer according to the mass ratio of water to manganese slag to red mud of = 0.2, and stirring for 3 hours in an air atmosphere;
d. adding phosphoric acid and stirring: adding 85% phosphoric acid (manganese slag and red mud) = 0.7 into a mixer according to the mass ratio, and stirring for 15 min;
e. molding: compression molding by a brick making machine;
f. and (5) maintenance: and curing for 3 d at 150 ℃ to obtain the manganese slag red mud baking-free brick.
According to the HJ 557-. According to GB/T2542-2012 & lt test method for wall building bricks & gt, the compressive strength test of the baking-free brick provided by the embodiment 3 shows that the baking-free brick has the compressive strength of 33.2 MPa, meets the strength grade of MU30 national standard, and can be widely applied to building load-bearing filling blocks.
Example 4
Preparation process of manganese slag and red mud baking-free brick, wherein Fe in manganese slag is used2O3Content and Fe3O4The sum of the contents of the components is 26.8 percent, and Fe in the red mud2O3Content and Al2O3The sum of the contents is 24.0 percent.
The preparation process comprises the following steps:
a. crushing and sieving: drying the manganese slag and the red mud, respectively mechanically crushing, and then respectively sieving through 100-mesh sieves;
b. preparing materials: weighing manganese slag and red mud according to the mass ratio of 1:1, and adding the manganese slag and the red mud into a mixer;
c. adding water and stirring: adding water into a mixer according to the mass ratio of water to manganese slag to red mud of = 0.2, and stirring for 3 hours in an air atmosphere;
d. adding an excitant and stirring: the exciting agent is a mixture of ferric sulfate, aluminum sulfate and gypsum in a mass ratio of 1:1:1, the addition amount of the exciting agent is 0.7 times of the total mass of the manganese slag powder and the red mud powder, and the stirring time is 15 min;
e. molding: compression molding by a brick making machine;
f. and (5) maintenance: and curing for 3 d at 90 ℃ to obtain the manganese slag red mud baking-free brick.
According to HJ 557-. The non-fired brick provided in example 4 was subjected to a compressive strength test according to GB/T2542-2012, method for testing wall bricks, and the test result was 19.2 MPa, which did not meet the strength rating of MU30 national standard.
Example 5
Preparation process of manganese slag and red mud baking-free brick, wherein Fe in manganese slag is used2O3Content and Fe3O4The sum of the contents of the components is 26.8 percent, and Fe in the red mud2O3Content and Al2O3The sum of the contents is 24.0 percent.
The preparation process comprises the following steps:
a. crushing and sieving: drying the manganese slag and the red mud, respectively mechanically crushing, and then respectively sieving through 100-mesh sieves;
b. preparing materials: weighing manganese slag and red mud according to the mass ratio of 1:1, and adding the manganese slag and the red mud into a mixer;
c. adding water and stirring: adding water into a mixer according to the mass ratio of water to manganese slag to red mud of = 0.2, and stirring for 3 hours in an air atmosphere;
d. molding: compression molding by a brick making machine to prepare a green brick;
e. roasting: drying the green brick at 105 ℃, then placing the green brick into a high-temperature furnace for roasting, heating to 1100 ℃ at the speed of 5-8 ℃/min, preserving the heat for 10 minutes at the temperature, taking out the green brick, and cooling to the normal temperature to obtain a finished product.
According to HJ 557-. The non-fired brick provided in example 5 was subjected to a compressive strength test according to GB/T2542-2012, test method for wall bricks, and the test result showed 21.5 MPa, which did not meet the strength rating of MU30 national standard.
Example 6
Preparation process of manganese slag and red mud baking-free brick, wherein Fe in manganese slag is used2O3Content and Fe3O4The sum of the contents is 10 percent, and Fe in the red mud2O3Content and Al2O3The sum of the contents is 24.0 percent.
The preparation process comprises the following steps:
a. crushing and sieving: drying the manganese slag and the red mud, respectively mechanically crushing, and then respectively sieving through 100-mesh sieves;
b. preparing materials: weighing manganese slag and red mud according to the mass ratio of 1:1, and adding the manganese slag and the red mud into a mixer;
c. adding water and stirring: adding water into a mixer according to the mass ratio of water to manganese slag to red mud of = 0.2, and stirring for 3 hours in an air atmosphere;
d. adding phosphoric acid and stirring: adding 85% phosphoric acid (manganese slag and red mud) = 0.7 into a mixer according to the mass ratio, and stirring for 15 min;
e. molding: compression molding by a brick making machine;
f. and (5) maintenance: and curing for 3 d at 150 ℃ to obtain the manganese slag red mud baking-free brick.
According to the HJ 557-. The non-fired brick provided in example 6 was subjected to a compressive strength test according to GB/T2542-2012, method for testing wall bricks, and the result was 10 MPa, which did not meet the strength rating of MU30 national standard.
Example 7
Preparation process of manganese slag and red mud baking-free brick, wherein Fe in manganese slag is used2O3Content and Fe3O4The sum of the contents of the components is 26.8 percent, and Fe in the red mud2O3Content and Al2O3The sum of the contents is 15.0 percent.
The preparation process comprises the following steps:
a. crushing and sieving: drying the manganese slag and the red mud, respectively mechanically crushing, and then respectively sieving through 100-mesh sieves;
b. preparing materials: weighing manganese slag and red mud according to the mass ratio of 1:1, and adding the manganese slag and the red mud into a mixer;
c. adding water and stirring: adding water into a mixer according to the mass ratio of water to manganese slag to red mud of = 0.2, and stirring for 3 hours in an air atmosphere;
d. adding phosphoric acid and stirring: adding 85% phosphoric acid (manganese slag and red mud) = 0.7 into a mixer according to the mass ratio, and stirring for 15 min;
e. molding: compression molding by a brick making machine;
f. and (5) maintenance: and curing for 3 d at 150 ℃ to obtain the manganese slag red mud baking-free brick.
According to the HJ 557-. The non-fired brick provided in example 7 was subjected to a compressive strength test according to GB/T2542-2012, method for testing wall bricks, and the result was 12 MPa, which did not meet the strength rating of MU30 national standard.
By integrating the above embodiments, only by completely implementing according to the operation steps in the application and using 85% phosphoric acid for reaction, the manganese slag and the red mud can be fully utilized and prepared into the baking-free brick meeting the national standard, the preparation process is simple, the operation is simple, the calcination is not needed, the energy consumption is reduced, and the method is economical and practical.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (6)
1. A preparation process of a manganese slag and red mud baking-free brick is characterized by comprising the following steps: the method comprises the following steps:
(1) crushing and sieving: respectively collecting manganese slag and red mud, removing impurities, drying, respectively mechanically pulverizing, and sieving to obtain manganese slag powder and red mud powder, wherein Fe in manganese slag2O3Content and Fe3O4The sum of the contents is not less than 15 percent, and Fe in the red mud2O3Content and Al2O3The sum of the contents is not less than 20 percent;
(2) mixing the ingredients: weighing the manganese slag powder and the red mud powder obtained in the step (1) according to the mass ratio of 0.25-4.0: 1, adding the manganese slag powder and the red mud powder into a mixer, adding water which is 0.1-0.3 times of the total mass of the manganese slag powder and the red mud powder according to the water adding ratio, and adjusting the atmosphere in the mixer to fully stir to obtain a mixture;
(3) mixing phosphoric acid: adding phosphoric acid into the mixture obtained in the step (2) according to a ratio, wherein the phosphoric acid is 85% phosphoric acid solution, the adding amount of the phosphoric acid solution is 0.2-0.9 times of the total mass of the manganese slag powder and the red mud powder, and stirring to enable the phosphoric acid solution to react fully to obtain mixed slurry for later use;
(4) green brick forming: putting a certain amount of the mixed slurry obtained in the step (3) into a brick making machine for compression molding to obtain a green brick;
(5) and (3) maintaining the brick body: and (3) placing the green bricks in a kiln for full curing at the temperature of 90-150 ℃ to obtain the manganese slag red mud baking-free bricks.
2. The preparation process of the manganese slag and red mud baking-free brick according to claim 1, which is characterized by comprising the following steps: in the step (1), the sieving mesh number is 100-200 meshes.
3. The preparation process of the manganese slag and red mud baking-free brick according to claim 1, which is characterized by comprising the following steps: in the step (3), the stirring is carried out for a reaction time of 10-60 min.
4. The preparation process of the manganese slag and red mud baking-free brick according to claim 1, which is characterized by comprising the following steps: in the step (5), the curing is to place the green brick in an environment of 90-150 ℃ for heat preservation, pressure maintaining and standing for 3-10 days.
5. The preparation process of the manganese slag and red mud baking-free brick according to claim 4, which is characterized by comprising the following steps: and the pressure maintaining step comprises the steps of firstly increasing the pressure for 1-2 hours, then stabilizing the pressure for 7-9 hours, and then reducing the pressure for 1-2 hours, thereby completing the maintenance of the green brick.
6. The baking-free brick prepared by the preparation process of the manganese slag red mud baking-free brick as claimed in any one of claims 1 to 5 is characterized in that: the raw materials of the baking-free brick consist of manganese slag, red mud, water and 85 percent phosphoric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010107507.2A CN111285661B (en) | 2020-02-21 | 2020-02-21 | Preparation process of manganese slag and red mud baking-free brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010107507.2A CN111285661B (en) | 2020-02-21 | 2020-02-21 | Preparation process of manganese slag and red mud baking-free brick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111285661A CN111285661A (en) | 2020-06-16 |
| CN111285661B true CN111285661B (en) | 2021-08-27 |
Family
ID=71019697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010107507.2A Active CN111285661B (en) | 2020-02-21 | 2020-02-21 | Preparation process of manganese slag and red mud baking-free brick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111285661B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116082011A (en) * | 2022-12-27 | 2023-05-09 | 贵州大学 | Aerated concrete block produced from electrolytic manganese slag and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468905A (en) * | 2007-12-28 | 2009-07-01 | 刘贵堂 | Red mud unburned brick and preparation thereof |
| CN103641402A (en) * | 2013-12-09 | 2014-03-19 | 广西启利新材料科技股份有限公司 | Baking-free brick prepared from red mud |
| CN105294023A (en) * | 2015-11-17 | 2016-02-03 | 中山大学 | Method for repairing heavy metal-polluted soil by using red mud granular material |
| CN109650836A (en) * | 2019-01-31 | 2019-04-19 | 贵州大学 | A kind of preparation method that mangaic acid phase analysis high additive is non-burning brick |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050087107A1 (en) * | 2003-10-23 | 2005-04-28 | Jaquays Charles D. | Building and other materials containing treated bauxite tailings and process for making same |
-
2020
- 2020-02-21 CN CN202010107507.2A patent/CN111285661B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468905A (en) * | 2007-12-28 | 2009-07-01 | 刘贵堂 | Red mud unburned brick and preparation thereof |
| CN103641402A (en) * | 2013-12-09 | 2014-03-19 | 广西启利新材料科技股份有限公司 | Baking-free brick prepared from red mud |
| CN105294023A (en) * | 2015-11-17 | 2016-02-03 | 中山大学 | Method for repairing heavy metal-polluted soil by using red mud granular material |
| CN109650836A (en) * | 2019-01-31 | 2019-04-19 | 贵州大学 | A kind of preparation method that mangaic acid phase analysis high additive is non-burning brick |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111285661A (en) | 2020-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110282925B (en) | Artificial porous aggregate of carbonized steel slag and preparation method thereof | |
| CN113896466B (en) | Red mud consolidation method based on carbonation reaction and carbonized product obtained by same | |
| CN108821621B (en) | Light high-strength ceramsite and preparation method thereof | |
| CN102531667B (en) | Building thermal insulation wall body material and preparation method thereof | |
| CN104446364A (en) | Method for preparing ceramsite through electrolytic manganese sulfate slag | |
| CN112830699B (en) | Cement admixture, preparation method and application | |
| CN105948711B (en) | A kind of fired brick and preparation method thereof | |
| CN108218269B (en) | Nickel iron slag cementing material and preparation process thereof | |
| CN110950619A (en) | Preparation method for producing autoclaved aerated concrete from lithium slag and product thereof | |
| CN112624651A (en) | Resource utilization method of electrolytic manganese filter-pressing residues | |
| CN104478329A (en) | Preparation method for producing autoclaved aerated concrete block by using antimony ore tailing | |
| CN110903046B (en) | Method for preparing building cementing material by using leaching residues of electrolytic manganese metal | |
| CN111285661B (en) | Preparation process of manganese slag and red mud baking-free brick | |
| CN114276097A (en) | Nickel slag cementing material for improving activity of nickel slag through split-phase activation and preparation method thereof | |
| CN104446363A (en) | Method of preparing ceramsite from manganese carbonate residues | |
| CN112028660B (en) | Composition for preparing ultra-light ceramsite, ceramsite and preparation method thereof | |
| CN116332535A (en) | Method for producing active micro powder by cooperatively treating manganese slag by using fluidized bed furnace | |
| CN103755182A (en) | Ardealite cementing material and preparation method thereof | |
| CN113955958B (en) | Environment-friendly high-strength cement and preparation method thereof | |
| CN105859162A (en) | Method for producing sound-absorption material by leaching of slag and granulation of fine powder | |
| CN114085067A (en) | Method for preparing sintered material by using secondary aluminum ash | |
| CN112062544A (en) | Modified red mud-based building block and preparation method thereof | |
| CN111825402A (en) | Resource treatment method of phosphorus slag | |
| CN104177072A (en) | Preparation method for synthesizing anorthite-enstatite composite ceramic from electrolytic manganese slag | |
| CN110590213A (en) | Concrete expanding agent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |