CN110002772A - A kind of low-grade magnesite prepares method of magnesium oxide - Google Patents
A kind of low-grade magnesite prepares method of magnesium oxide Download PDFInfo
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- CN110002772A CN110002772A CN201910302189.2A CN201910302189A CN110002772A CN 110002772 A CN110002772 A CN 110002772A CN 201910302189 A CN201910302189 A CN 201910302189A CN 110002772 A CN110002772 A CN 110002772A
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- raw material
- magnesite
- magnesium oxide
- magnetic
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- 235000014380 magnesium carbonate Nutrition 0.000 title claims abstract description 53
- 239000001095 magnesium carbonate Substances 0.000 title claims abstract description 52
- 229910000021 magnesium carbonate Inorganic materials 0.000 title claims abstract description 52
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 title claims abstract description 51
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 26
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000001354 calcination Methods 0.000 claims abstract description 19
- 230000005484 gravity Effects 0.000 claims abstract description 18
- 238000007885 magnetic separation Methods 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims description 42
- 239000006148 magnetic separator Substances 0.000 claims description 12
- 239000012141 concentrate Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical group [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000000746 purification Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 230000005307 ferromagnetism Effects 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 2
- 229910001608 iron mineral Inorganic materials 0.000 abstract description 2
- 230000005389 magnetism Effects 0.000 abstract description 2
- 235000010755 mineral Nutrition 0.000 abstract description 2
- 239000011707 mineral Substances 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000010334 sieve classification Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 229910052681 coesite Inorganic materials 0.000 description 5
- 229910052906 cristobalite Inorganic materials 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 229910052682 stishovite Inorganic materials 0.000 description 5
- 229910052905 tridymite Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000008396 flotation agent Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
-
- 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
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/102—Preheating, burning calcining or cooling of magnesia, e.g. dead burning
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The present invention provides a kind of low-grade magnesites to prepare method of magnesium oxide, comprising the following steps: broken classification, calcining, sieve classification, gravity treatment, magnetic separation, mixed calcining.The technique that the present invention uses preparatory calcining-classification-gravity treatment-magnetic separation-to calcine again, first calcines low-grade magnesite, MgCO under cryogenic3Meeting incomplete decomposing generates CO, CO can play the role of reducing gas, weak magnetism mineral in magnesite are reduced to ferromagnetism iron mineral, then it is classified, different gravity treatment and magnetic separation process are chosen according to size fractionated magnesite characteristic, finally again by the magnesite mixed calcining after purification, 98.5% or more the magnesia grade of acquisition, take full advantage of low-grade magnesite, make low-grade magnesite obtain recycling rationally to utilize, resource utilization is improved, land occupation is reduced, there is preferable Social benefit and economic benefit.
Description
Technical field
The present invention relates to low-grade magnesite technical field of beneficiation, specifically a kind of low-grade magnesite prepares magnesia
Method.
Background technique
China's magnesite resource rich reserves, about 3,100,000,000 t of proven reserve, account for a quarter of whole world gross reserves, main
It is distributed in Liaoning, two province of Shandong, reserves are total to account for about the 95.11% of national gross reserves, and wherein Liaoning Province is concentrated mainly on Liaoning
Southern areas, such as Haicheng City, Yingkou area, proved field has 12, and 25.77 hundred million t of reserves accounts for about national gross reserves
85%, account for the 20% of whole world gross reserves.However the Persisting exploitation and high added value magnesium salts product due to magnesite resource are to former material
Expect desired continuous improvement, capable of directly meeting the magnesite (content of magnesia 43%~47.8%) of production requirement, resource is increasingly
It is few.Simultaneously because the rough operation of magnesite resource, leads to high-quality resource relative shortage.Even more noteworthy low-grade magnesite
A large amount of discarded huge wastes for not only causing resource of mine, and pollute surrounding enviroment.Major impurity in magnesite includes
CaO、Al2O3、SiO2、Fe2O3Deng impurity content height will result directly in the reduction of content of MgO in magnesite, and then lead to its derivative
The consequences such as quality decline, the increase of production cost and the destruction of ecological environment of product.Purification side about low-grade magnesite
Method, industrial at present mainly to use flotation and chemical purification, floatation process equipment investment is big, and process flow is complicated, production cost
Height, and need to cause the pollution of environment and the waste of water resource using flotation agent and a large amount of water resource.Chemical purification
Process flow is more complicated, and technological parameter is difficult to control, and is difficult to accomplish the zero-emission of chemical agent in production process, and be produced into
Therefore this height does not obtain substantive application in the industrial production.
Summary of the invention
The purpose of the present invention is to provide a kind of low-grade magnesites to prepare method of magnesium oxide, to solve above-mentioned background skill
The problem of art.
The technical scheme of the present invention is realized as follows:
A kind of low-grade magnesite prepares method of magnesium oxide, comprising the following steps:
(1) magnesite operation after crushing and screening obtains roasting raw material；
(2) step (1) roasting raw material is sent into 30 ~ 40min of calcined by rotary kiln, be then cooled to room temperature；
(3) magnesite after step (2) calcining is broken, then acquisition -6mm raw material, 6 ~ 12mm raw material are classified through the double-deck reciprocating sieve
With 12 ~ 20mm raw material；
(4) -6mm raw material is sent into jigging machine progress gravity treatment to sort, the light product of acquisition -6mm and -6mm weight product；
(5) 6 ~ 12mm raw material is sent into shaking table progress gravity treatment to sort, obtains the light product of 6 ~ 12mm and 6 ~ 12mm weight product；
(6) 12 ~ 20mm raw material is sent into jigging machine progress gravity treatment to sort, obtains the light product of 12 ~ 20mm and 12 ~ 20mm weight product；
(7) the light product of step (4) -6mm is sent into magnetic separator progress magnetic separation to sort, acquisition -6mm magnetic concentrate and -6mm magnetic separation tail
Mine；
(8) the light product of (5) 6 ~ 12mm of step is sent into magnetic separator progress magnetic separation to sort, obtains 6 ~ 12mm magnetic concentrate and 6 ~ 12mm
Magnetic tailing；
(9) step (7) -6mm magnetic tailing and the light product of (6) 12 ~ 20mm of step filtered, dried, moisture is less than 5%, then
It is uniformly mixed with (8) 6 ~ 12mm magnetic tailing of step, obtains mixture；
(10) step (9) mixture is sent into 1 ~ 2h of calcined by rotary kiln, then cools to room temperature, obtains magnesium oxide product.
Preferably, step (1) the roasting raw material granularity is less than 20mm.
Preferably, step (2) calcination temperature is 580 DEG C ~ 680 DEG C.
Preferably, step (4) jigging machine is rember vibratory jig, and the pulp density of jigging machine is 20% ~ 25%.
Preferably, step (5) shaking table is air table.
Preferably, step (6) jigging machine is diaphragm jig, and the pulp density of jigging machine is 20% ~ 25%.
Preferably, step (7) magnetic separator is high gradient magnetic separator, and magnetic field strength is 1.2T ~ 1.5T.
Preferably, step (8) magnetic separator is dry-type magnetic extractor, and magnetic field strength is 0.8T ~ 1.0T.
Preferably, step (10) calcination temperature is 750 DEG C ~ 850 DEG C.
The invention has the benefit that
The technique that the present invention uses preparatory calcining-classification-gravity treatment-magnetic separation-to calcine again, first by low-grade magnesite in low temperature item
It is calcined under part, MgCO3Meeting incomplete decomposing generates CO, and CO can play the role of reducing gas, by the weak magnetism in magnesite
Mineral reduction is ferromagnetism iron mineral, is then classified, different gravity treatment and magnetic are chosen according to size fractionated magnesite characteristic
Technique is selected, finally again by the magnesite mixed calcining after purification, 98.5% or more the magnesia grade of acquisition is taken full advantage of low
Grade magnesite makes low-grade magnesite obtain recycling and rationally utilizes, and improves resource utilization, reduces land occupation, has preferable
Social benefit and economic benefit.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that implement describedly
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Liaoning low-grade magnesite content of magnesia is 41.08%, SiO2Content is 3.01%, and CaO content is
3.22%, TFe content are 1.25%.
Embodiment 1
A kind of low-grade magnesite prepares method of magnesium oxide, comprising the following steps:
(1) magnesite operation after crushing and screening obtains roasting raw material；
(2) step (1) roasting raw material is sent into calcined by rotary kiln 40min, calcination temperature is 580 DEG C, is then cooled to room temperature；
(3) magnesite after step (2) calcining is broken, then acquisition -6mm raw material, 6 ~ 12mm raw material are classified through the double-deck reciprocating sieve
With 12 ~ 20mm raw material；
(4) by -6mm raw material be sent into rember vibratory jig carry out gravity treatment sort, pulp density 20%, the light product of acquisition -6mm and -
6mm weight product；
(5) 6 ~ 12mm raw material is sent into air table progress gravity treatment to sort, obtains the light product of 6 ~ 12mm and 6 ~ 12mm weight product；
(6) 12 ~ 20mm raw material is sent into diaphragm jig progress gravity treatment to sort, pulp density 20% obtains 12 ~ 20mm and gently produces
Product and 12 ~ 20mm weight product；
(7) the light product of step (4) -6mm is sent into high gradient magnetic separator progress magnetic separation to sort, magnetic field strength 1.5T, obtain -
6mm magnetic concentrate and -6mm magnetic tailing；
(8) the light product of (5) 6 ~ 12mm of step be sent into dry-type magnetic extractor carry out magnetic separation and sort, magnetic field strength be 1.0T obtain 6 ~
12mm magnetic concentrate and 6 ~ 12mm magnetic tailing；
(9) step (7) -6mm magnetic tailing and the light product of (6) 12 ~ 20mm of step filtered, dried, moisture is less than 5%, then
It is uniformly mixed with (8) 6 ~ 12mm magnetic tailing of step, obtains mixture；
(10) step (9) mixture is sent into calcined by rotary kiln 2h, calcination temperature is 750 DEG C, then cools to room temperature, obtains oxygen
Change magnesium products.
It is 98.55% that caustic-calcined magnesite content of magnesia, which is made, in the present embodiment, CaO content 0.30%, SiO2Content is 0.29,
TFe content is 0.30%.
Embodiment 2
A kind of low-grade magnesite prepares method of magnesium oxide, comprising the following steps:
(1) magnesite operation after crushing and screening obtains roasting raw material；
(2) step (1) roasting raw material is sent into calcined by rotary kiln 35min, calcination temperature is 630 DEG C, is then cooled to room temperature；
(3) magnesite after step (2) calcining is broken, then acquisition -6mm raw material, 6 ~ 12mm raw material are classified through the double-deck reciprocating sieve
With 12 ~ 20mm raw material；
(4) by -6mm raw material be sent into rember vibratory jig carry out gravity treatment sort, pulp density 25%, the light product of acquisition -6mm and -
6mm weight product；
(5) 6 ~ 12mm raw material is sent into air table progress gravity treatment to sort, obtains the light product of 6 ~ 12mm and 6 ~ 12mm weight product；
(6) 12 ~ 20mm raw material is sent into diaphragm jig progress gravity treatment to sort, pulp density 25% obtains 12 ~ 20mm and gently produces
Product and 12 ~ 20mm weight product；
(7) the light product of step (4) -6mm is sent into high gradient magnetic separator progress magnetic separation to sort, magnetic field strength 1.3T, obtain -
6mm magnetic concentrate and -6mm magnetic tailing；
(8) the light product of (5) 6 ~ 12mm of step be sent into dry-type magnetic extractor carry out magnetic separation and sort, magnetic field strength be 0.9T obtain 6 ~
12mm magnetic concentrate and 6 ~ 12mm magnetic tailing；
(9) step (7) -6mm magnetic tailing and the light product of (6) 12 ~ 20mm of step filtered, dried, moisture is less than 5%, then
It is uniformly mixed with (8) 6 ~ 12mm magnetic tailing of step, obtains mixture；
(10) step (9) mixture is sent into calcined by rotary kiln 1.5h, calcination temperature is 800 DEG C, then cools to room temperature, obtains
Magnesium oxide product.
It is 98.59% that caustic-calcined magnesite content of magnesia, which is made, in the present embodiment, CaO content 0.28%, SiO2Content is 0.27,
TFe content is 0.27%.
Embodiment 3
A kind of low-grade magnesite prepares method of magnesium oxide, comprising the following steps:
(1) magnesite operation after crushing and screening obtains roasting raw material；
(2) step (1) roasting raw material is sent into calcined by rotary kiln 30min, calcination temperature is 680 DEG C, is then cooled to room temperature；
(3) magnesite after step (2) calcining is broken, then acquisition -6mm raw material, 6 ~ 12mm raw material are classified through the double-deck reciprocating sieve
With 12 ~ 20mm raw material；
(4) by -6mm raw material be sent into rember vibratory jig carry out gravity treatment sort, pulp density 30%, the light product of acquisition -6mm and -
6mm weight product；
(5) 6 ~ 12mm raw material is sent into air table progress gravity treatment to sort, obtains the light product of 6 ~ 12mm and 6 ~ 12mm weight product；
(6) 12 ~ 20mm raw material is sent into diaphragm jig progress gravity treatment to sort, pulp density 30% obtains 12 ~ 20mm and gently produces
Product and 12 ~ 20mm weight product；
(7) the light product of step (4) -6mm is sent into high gradient magnetic separator progress magnetic separation to sort, magnetic field strength 1.2T, obtain -
6mm magnetic concentrate and -6mm magnetic tailing；
(8) the light product of (5) 6 ~ 12mm of step be sent into dry-type magnetic extractor carry out magnetic separation and sort, magnetic field strength be 0.8T obtain 6 ~
12mm magnetic concentrate and 6 ~ 12mm magnetic tailing；
(9) step (7) -6mm magnetic tailing and the light product of (6) 12 ~ 20mm of step filtered, dried, moisture is less than 5%, then
It is uniformly mixed with (8) 6 ~ 12mm magnetic tailing of step, obtains mixture；
(10) step (9) mixture is sent into calcined by rotary kiln 1h, calcination temperature is 850 DEG C, then cools to room temperature, obtains oxygen
Change magnesium products.
It is 98.63% that caustic-calcined magnesite content of magnesia, which is made, in the present embodiment, CaO content 0.27%, SiO2Content is 0.26,
TFe content is 0.25%.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of low-grade magnesite prepares method of magnesium oxide, comprising the following steps:
(1) magnesite operation after crushing and screening obtains roasting raw material；
(2) step (1) roasting raw material is sent into 30 ~ 40min of calcined by rotary kiln, be then cooled to room temperature；
(3) magnesite after step (2) calcining is broken, then acquisition -6mm raw material, 6 ~ 12mm raw material are classified through the double-deck reciprocating sieve
With 12 ~ 20mm raw material；
(4) -6mm raw material is sent into jigging machine progress gravity treatment to sort, the light product of acquisition -6mm and -6mm weight product；
(5) 6 ~ 12mm raw material is sent into shaking table progress gravity treatment to sort, obtains the light product of 6 ~ 12mm and 6 ~ 12mm weight product；
(6) 12 ~ 20mm raw material is sent into jigging machine progress gravity treatment to sort, obtains the light product of 12 ~ 20mm and 12 ~ 20mm weight product；
(7) the light product of step (4) -6mm is sent into magnetic separator progress magnetic separation to sort, acquisition -6mm magnetic concentrate and -6mm magnetic separation tail
Mine；
(8) the light product of (5) 6 ~ 12mm of step is sent into magnetic separator progress magnetic separation to sort, obtains 6 ~ 12mm magnetic concentrate and 6 ~ 12mm
Magnetic tailing；
(9) step (7) -6mm magnetic tailing and the light product of (6) 12 ~ 20mm of step filtered, dried, moisture is less than 5%, then
It is uniformly mixed with (8) 6 ~ 12mm magnetic tailing of step, obtains mixture；
(10) step (9) mixture is sent into 1 ~ 2h of calcined by rotary kiln, then cools to room temperature, obtains magnesium oxide product.
2. a kind of low-grade magnesite according to claim 1 prepares method of magnesium oxide, which is characterized in that the step
(1) roasting raw material granularity is less than 20mm.
3. a kind of low-grade magnesite according to claim 1 prepares method of magnesium oxide, which is characterized in that the step
(2) calcination temperature is 580 DEG C ~ 680 DEG C.
4. a kind of low-grade magnesite according to claim 1 prepares method of magnesium oxide, which is characterized in that the step
(4) jigging machine is rember vibratory jig, and the pulp density of jigging machine is 20% ~ 25%.
5. a kind of low-grade magnesite according to claim 1 prepares method of magnesium oxide, which is characterized in that the step
(5) shaking table is air table.
6. a kind of low-grade magnesite according to claim 1 prepares method of magnesium oxide, which is characterized in that the step
(6) jigging machine is diaphragm jig, and the pulp density of jigging machine is 20% ~ 25%.
7. a kind of low-grade magnesite according to claim 1 prepares method of magnesium oxide, which is characterized in that the step
(7) magnetic separator is high gradient magnetic separator, and magnetic field strength is 1.2T ~ 1.5T.
8. a kind of low-grade magnesite according to claim 1 prepares method of magnesium oxide, which is characterized in that the basis
A kind of low-grade magnesite described in claim 1 prepares method of magnesium oxide, which is characterized in that step (10) the calcining temperature
Degree is 750 DEG C ~ 850 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910302189.2A CN110002772B (en) | 2019-04-16 | 2019-04-16 | Method for preparing magnesium oxide from low-grade magnesite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910302189.2A CN110002772B (en) | 2019-04-16 | 2019-04-16 | Method for preparing magnesium oxide from low-grade magnesite |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498621A (en) * | 2019-09-02 | 2019-11-26 | 于景坤 | A kind of preparation method of ultra-fine purification concentrate powder magnesite clinker |
| CN112320826A (en) * | 2020-10-29 | 2021-02-05 | 刘峰 | Method for jointly preparing high-purity magnesium oxide and refined ammonium sulfate by using low-grade magnesite |
| CN115572080A (en) * | 2022-11-09 | 2023-01-06 | 营口菱镁化工集团有限公司 | Preparation method of feed-grade magnesium oxide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB380868A (en) * | 1931-06-06 | 1932-09-29 | Octave Tagnon | Improvements in and relating to the decomposition of magnesium carbonate-containing ores |
| RU2595120C1 (en) * | 2015-06-17 | 2016-08-20 | Общество С Ограниченной Ответственностью "Группа "Магнезит" | Method of thermomechanical enrichment of magnesite in indirect heating furnaces |
-
2019
- 2019-04-16 CN CN201910302189.2A patent/CN110002772B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB380868A (en) * | 1931-06-06 | 1932-09-29 | Octave Tagnon | Improvements in and relating to the decomposition of magnesium carbonate-containing ores |
| RU2595120C1 (en) * | 2015-06-17 | 2016-08-20 | Общество С Ограниченной Ответственностью "Группа "Магнезит" | Method of thermomechanical enrichment of magnesite in indirect heating furnaces |
Non-Patent Citations (1)
| Title |
|---|
| 邓玉芬等: "菱镁矿阶梯化煅烧制备活性氧化镁", 非金属矿, vol. 40, no. 1, pages 16 - 18 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498621A (en) * | 2019-09-02 | 2019-11-26 | 于景坤 | A kind of preparation method of ultra-fine purification concentrate powder magnesite clinker |
| CN110498621B (en) * | 2019-09-02 | 2021-11-05 | 于景坤 | Preparation method of superfine purified concentrate powder sintered magnesia |
| CN112320826A (en) * | 2020-10-29 | 2021-02-05 | 刘峰 | Method for jointly preparing high-purity magnesium oxide and refined ammonium sulfate by using low-grade magnesite |
| CN115572080A (en) * | 2022-11-09 | 2023-01-06 | 营口菱镁化工集团有限公司 | Preparation method of feed-grade magnesium oxide |
| CN115572080B (en) * | 2022-11-09 | 2024-01-16 | 营口菱镁化工集团有限公司 | Preparation method of feed-grade magnesium oxide |
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| Publication number | Publication date |
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| CN110002772B (en) | 2024-05-07 |
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