CN1524819A - Clean economical circulatory producing method of magnesite - Google Patents
Clean economical circulatory producing method of magnesite Download PDFInfo
- Publication number
- CN1524819A CN1524819A CNA031339557A CN03133955A CN1524819A CN 1524819 A CN1524819 A CN 1524819A CN A031339557 A CNA031339557 A CN A031339557A CN 03133955 A CN03133955 A CN 03133955A CN 1524819 A CN1524819 A CN 1524819A
- Authority
- CN
- China
- Prior art keywords
- magnesite
- mgo
- giobertite
- light
- purity
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention relates to a magnesite clean and cycled processing method characterized in that, dead-burned magnesite, caustic calcined magnesite, active magnesite, magnesium hydroxide, high-purity magnesite, magnesium salt chemical product, magnesite construction material product and alkaline amorphous refractory are produced at the same site, reclaiming CO2 through external heating, sintering the magnesite in the external heating caustic kiln, producing high silicon content abandoned ore through hydrating method, the mucks of magnesium hydroxide retort and carbonization tank is used as the raw material for the magnesite construction material.
Description
The present invention relates to a kind of magnesite method for producing, especially a kind of cleaner production is eliminated pollutent in process of production, and make full use of waste material and exhaust gas discharged, waste residue, resource can be made full use of, realize that low exploitation, usury are used, the economic method for producing of magnesite clean cycle of the recycling economy pattern of low emission.
Magnesite is non-renewable precious resources, and whole world proven reserve is 12,600,000,000 tons, and Liaoning Province's Haicheng City reaches 22.75 hundred million tons, accounts for the world 18%, 75% of the whole nation.There is more problem in past magnesite processing, mainly contains:
1, ore extraction is only adopted and is not shelled, and influences sustainable development;
2, ore resource does not make full use of, and high grade ore is only used bulk, muck and low-grade
Ore is usefulness not, wastes over half;
3, with the direct grain magnesite of grey fuel is arranged, reduced grade;
4, great majority heavily firing do not have dust removal installation, environmental pollution is serious;
Decomposite the CO that comes when 5, magnesite is calcined
2Do not reclaim, wasted available resources, shadow
Ring climatic deterioration;
6, manage dispersion, blockade on new techniques, state of the art is low, the new product development difficulty;
7, vie each other duplicate construction, the sales promotion of demanding a lower price, enterprise and national economic interest between enterprise
All suffer a loss.
The purpose of this invention is to provide a kind of magnesite resource that rationally utilizes, reduce the economic method for producing of magnesite clean cycle of environmental pollution.
The object of the present invention is achieved like this:
The economic working method of a kind of magnesite clean cycle is characterized in that: produce reburned magnesia, magnesia unslacked, activated carbon, magnesium hydroxide, highly-purity magnesite, magnesium salts Chemicals in same mining area, also produce magnesite building material made, alkaline amorphous refractory simultaneously;
The secondary giobertite of the superfine giobertite of MgO 〉=47% and/or the one-level giobertite of MgO 〉=46% and MgO 〉=45% is with heating the light baking kiln roasting outward, produce high-purity light-burning magnesium powder, activated carbon, high-purity light-burning magnesium powder is produced magnesium hydroxide, deliver to oily shaft furnace calcining behind high-purity light-burning magnesium powder pressure ball, produce highly-purity magnesite;
The one-level giobertite of MgO 〉=46% and the secondary giobertite of MgO 〉=45% are produced reburned magnesia with the shaft furnace calcining;
The one-level giobertite of MgO 〉=46% and the secondary giobertite of MgO 〉=45% are produced magnesia unslacked with the reflecting kiln calcining;
Magnesia unslacked and/or high-purity light-burning magnesium powder be carbonization production lightweight MgO or production magnesium salts Chemicals in the carbonization jar;
Heat the light baking kiln top outside and be provided with induced-draft fan and tightness system recovery CO
2
Magnesium hydroxide adopts the aquation method to produce: magnesite heats light baking kiln outside and is lower than 750 ℃ of roastings, pulverizes to be light-burning magnesium powder, places tank to add water and stirs, and is warming up to 90 ℃, and MgO is converted into Mg (OH)
2, in 10 hours, finish conversion, stop to stir, magnesium liquid is discharged into settling tank, CaCO
3, Al
2O
3, Fe
2O
3, SiO
2Water insoluble, the very fast sedimentation in settling tank of these four kinds of compositions, Mg (OH)
2Be the colloid situation, precipitate very slowly, leave standstill C
3CO
3, Al
2O
3, Fe
2O
3, SiO
2Contamination precipitation, residue will contain Mg (OH) as magnesite building material made raw material
2Colloidal solution is separated to another settling tank, carries out natural subsidence, discharges upper clear supernate, will precipitate partially desiccated, smash and promptly get pulverous Mg (OH)
2Product.
Deliver in the carbonization jar after producing the flue gas washing in outer heating light baking kiln, shaft furnace, the reflecting kiln calcining, participate in magnesia unslacked and/or high-purity light-burning magnesium powder carbonization;
SiO
2〉=3.5% high silicon abandoned mine, magnesium hydroxide retort residue and carbonization jar residue are as magnesite building material made raw material;
The high calcium abandoned mine of CaO 〉=6% is as alkaline amorphous refractory raw material;
Benefit of the present invention is:
Produce multiple product in same mining area, the product of some abandoned mines and some factory or the waste residue that gives off, can be used as the raw material or the additive of another factory, exploitation magnesite building material made, utilize conduct in the past to peel off the high scrap silicon of object, solved the problem of not shelling of only adopting, made full use of waste material and exhaust gas discharged, waste residue, resource can be made full use of, make the regular exploitation of giobertite.Magnesite heats light baking kiln outside and is lower than 750 ℃ of roastings, and the aquation method is produced Mg (OH)
2, heat light baking kiln outward and reclaim CO
2Pollutent is eliminated in process of production, realized that low exploitation, usury are used, the recycling economy pattern of low emission.
Fig. 1 schema of the present invention
As shown in the figure, the economic method for producing of magnesite clean cycle is produced reburned magnesia, magnesia unslacked, activated carbon, magnesium hydroxide, highly-purity magnesite, magnesium salts Chemicals in same mining area, also produces magnesite building material made, alkaline amorphous refractory simultaneously; The product of some abandoned mines and some factory or the waste residue that gives off can be used as the raw material or the additive of another factory.The contaminate environment that kiln is discharged, the dust-laden exhaust gas that is difficult to administer also can be used as the starting material of another factory;
The secondary giobertite of the superfine giobertite of MgO 〉=47% and/or the one-level giobertite of MgO 〉=46% and MgO 〉=45% becomes high-purity light-burning magnesium powder after delivering to the calcining of outer heating light baking kiln, pulverizing, reclaims CO in the calcining
2, CO
2Generally all more than 51%, the past all emits content, CO
2Price is higher, 1 ton of CO
2Price is equivalent to 3 times of magnesia unslacked price, and economic benefit is multiplied.Produce flue gas and deliver to the carbonization that the carbonization jar participates in magnesia unslacked or high-purity magnesium powder; High-purity light-burning magnesium powder or deliver to the magnesium hydroxide retort is produced magnesium hydroxide with the aquation method, and magnesium hydroxide retort residue is done magnesite building material made raw material; Perhaps produce activated carbon; Perhaps deliver to oily shaft furnace calcining behind the pressure ball, produce highly-purity magnesite; Perhaps deliver to the carbonization of carbonization jar, deep processing production lightweight MgO or produce the magnesium salts Chemicals, carbonization jar residue is done magnesite building material made raw material; The kiln in past can not be calcined muck, heats light baking kiln outward and can all utilize muck, and the rubble in about 25% the various concentrate is recycled.
The one-level giobertite of MgO 〉=46% and the secondary giobertite of MgO 〉=45% can also be delivered to the shaft furnace calcining and produce reburned magnesia, produce flue gas in the calcining and deliver to carbonization, deep processing production lightweight MgO or the production magnesium salts Chemicals that the carbonization jar participates in magnesia unslacked or high-purity magnesium powder; It is serious that past is heavily burnt the smoke pollution of shaft furnace, and the present invention produces in the process of magnesium salts Chemicals at carborization, and ash-laden gas is sent into carbon people jar, has both utilized the CO in the flue gas
2, will reclaiming based on the exhaust gas dust of raw material fine powder again, flue gas has solved dust removal problem through washing simultaneously.The most important heavily burning shaft furnace smoke pollution problem that exists over a long period of time that still solved also is a typical cleaner production pattern
The one-level giobertite of MgO 〉=46% and the secondary giobertite of MgO 〉=45% can also be delivered to the reflecting kiln calcining, pulverize back production magnesia unslacked, produce flue gas in the calcining and deliver to carbonization, deep processing production lightweight MgO or the production magnesium salts Chemicals that the carbonization jar participates in magnesia unslacked or high-purity magnesium powder, magnesia unslacked can also be delivered to the carbonization of carbonization jar, deep processing production lightweight MgO or produce the magnesium salts Chemicals;
SiO
2〉=35% abandoned mine is delivered to the reflecting kiln calcining, is pulverized, and with the residue of magnesite building materials additive and carbonization jar, the residue mixing roller-compaction of magnesium hydroxide retort, makes the magnesite building material made, the SiO of past ore
2The highest permission content 3.5%, SiO
2〉=3.5% ore is all as waste product, and the magnesite formula is as the raw material of magnesite building materials, its SiO
2Content allows 10%, and the high silicon ore of the depleted of making over can be used as the raw material of magnesite building material made.
The magnesite building material made is the great product in market, and it is raw material with the light-burning magnesium powder, also need add additive and material is filled in more adding.Add and fill material and can utilize high silicon ore, also can produce Mg (OH)
2Waste residue with carborization production lightweight MgO and magnesium salts Chemicals.The composition of these waste residues is the impurity in the magnesite, SiO
2, Al
2O
3, Fe
2O
3, CaCO
3Deng, the SiO that low-temperature bake is crossed
2Has certain activity, the phosphoric acid salt of Al, Fe can strengthen the hydration resistance of magnesite product, need to add phosphoric acid or phosphoric acid salt such as tertiary sodium phosphate, Sodium hexametaphosphate 99 in the additive of magnesite product, therefore, these compositions all help improving the hydration resistance of magnesite building material made.CaCO
3Decomposition temperature more than 800 ℃, the mineralogical composition of the light-burning magnesium powder calcium of low-temperature bake is still with CaCO
2Be main, it also is the ore powder that magnesite product need add.Therefore, whole discharges in the magnesite course of processing, the subsidiary material that all can be used as magnesite building materials system, because the market of magnesite building material made is very big, can utilize it to regulate the industrial scale of other products, making with magnesite is the industrial park that raw material contains various products, except that resource being had the high utilization ratio, almost zero release can be reached again, a typical recycling economy should be belonged to.
The abandoned mine of CaO 〉=6% is delivered to shaft furnace calcining, and mix with highly-purity magnesite the calcining back, fragmentation, mixes with amorphous refractory additive such as powder, makes alkaline amorphous refractory; Alkalescence amorphous refractory calcic is higher, can utilize the high calcium abandoned mine.
Magnesite heats light baking kiln outside and is lower than 750 ℃ of roastings, pulverizes to be light-burning magnesium powder, places tank to add water and stirs, and is warming up to 90 ℃, and MgO is converted into Mg (OH)
2, in 10 hours, finish conversion, stop to stir, magnesium liquid is discharged into settling tank, CaCO
3, Al
2O
3, Fe
2O
3, SiO
2Water insoluble, the very fast sedimentation in settling tank of these four kinds of compositions, Mg (OH)
2Be the colloid situation, precipitate very slowly, leave standstill CaCO
3, Al
2O
3, Fe
2O
3, SiO
2Contamination precipitation, residue will contain Mg (OH) as magnesite building material made raw material
2Colloidal solution is separated to another settling tank, carries out natural subsidence, discharges upper clear supernate, will precipitate partially desiccated, smash and promptly get pulverous Mg (OH)
2Product.
Realized the recycling economy of " low exploitation, usury with, low emission " and environmental pollution has been solved in process of production cleaner production.
Claims (1)
1. economic working method of magnesite clean cycle, it is characterized in that: produce reburned magnesia, magnesia unslacked, activated carbon, magnesium hydroxide, highly-purity magnesite, magnesium salts Chemicals in same mining area, also produce magnesite building material made, alkaline amorphous refractory simultaneously;
The secondary giobertite of the superfine giobertite of MgO 〉=47% and/or the one-level giobertite of MgO 〉=46% and MgO 〉=45% is with heating the light baking kiln roasting outward, produce high-purity light-burning magnesium powder, activated carbon, high-purity light-burning magnesium powder is produced magnesium hydroxide, deliver to oily shaft furnace calcining behind high-purity light-burning magnesium powder pressure ball, produce highly-purity magnesite;
The one-level giobertite of MgO 〉=46% and the secondary giobertite of MgO 〉=45% are produced reburned magnesia with the shaft furnace calcining;
The one-level giobertite of MgO 〉=46% and the secondary giobertite of MgO 〉=45% are produced magnesia unslacked with the reflecting kiln calcining;
Magnesia unslacked and/or high-purity light-burning magnesium powder be carbonization production lightweight MgO or production magnesium salts Chemicals in the carbonization jar;
Heat the light baking kiln top outside and be provided with induced-draft fan and tightness system recovery CO
2
Magnesium hydroxide adopts the aquation method to produce: magnesite heats light baking kiln outside and is lower than 750 ℃ of roastings, pulverizes to be light-burning magnesium powder, places tank to add water and stirs, and is warming up to 90 ℃, and MgO is converted into Mg (OH)
2, in 10 hours, finish conversion, stop to stir, magnesium liquid is discharged into settling tank, CaCO
3, Al
2O
3, Fe
2O
3, SiO
2Water insoluble, the very fast sedimentation in settling tank of these four kinds of compositions, Mg (OH)
2Be the colloid situation, precipitate very slowly, leave standstill CaCO
3, Al
2O
3, Fe
2O
3, SiO
2Contamination precipitation, residue will contain Mg (OH) as magnesite building material made raw material
2Colloidal solution is separated to another settling tank, carries out natural subsidence, discharges upper clear supernate, will precipitate partially desiccated, smash and promptly get pulverous Mg (OH)
2Product.
Deliver in the carbonization jar after producing the flue gas washing in outer heating light baking kiln, shaft furnace, the reflecting kiln calcining, participate in magnesia unslacked and/or high-purity light-burning magnesium powder carbonization;
SiO
2〉=3.5% high silicon abandoned mine, magnesium hydroxide retort residue and carbonization jar residue are as magnesite building material made raw material;
The high calcium abandoned mine of CaO 〉=6% is as alkaline amorphous refractory raw material;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031339557A CN1234635C (en) | 2003-09-15 | 2003-09-15 | Clean economical circulatory producing method of magnesite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031339557A CN1234635C (en) | 2003-09-15 | 2003-09-15 | Clean economical circulatory producing method of magnesite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1524819A true CN1524819A (en) | 2004-09-01 |
| CN1234635C CN1234635C (en) | 2006-01-04 |
Family
ID=34286088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031339557A Expired - Fee Related CN1234635C (en) | 2003-09-15 | 2003-09-15 | Clean economical circulatory producing method of magnesite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1234635C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325418C (en) * | 2005-06-03 | 2007-07-11 | 海城华宇集团 | Method for preparing magnesia by using dust removal powder of magnesia for shaft kiln and kibble powder of disused magnesite ore |
| CN100334026C (en) * | 2005-11-18 | 2007-08-29 | 东北大学 | Process for prepering active magnesium oxide |
| CN100427420C (en) * | 2006-03-16 | 2008-10-22 | 海城市西洋耐火材料有限公司 | Process for preparing high temperature vertical kiln oil firing medium magnesite |
| CN102030487A (en) * | 2009-09-28 | 2011-04-27 | 王全祥 | New process for preparing high-purity magnesium oxide by normal temperature carbonization and low temperature pyrolysis |
| CN105130213A (en) * | 2015-07-15 | 2015-12-09 | 后英集团海城市高新技术产品有限公司 | Process of purifying flue gas in magnesite clinker shaft kiln through light-calcined MgO pellet layer and improving strength of MgO pellet |
| CN113634587A (en) * | 2021-08-25 | 2021-11-12 | 昆明理工大学 | Resource utilization method for desulfurization and sulfur by using magnesite |
| CN116943808A (en) * | 2023-07-24 | 2023-10-27 | 重庆九瑞金属材料有限公司 | Magnesium oxide production device and process thereof |
-
2003
- 2003-09-15 CN CNB031339557A patent/CN1234635C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325418C (en) * | 2005-06-03 | 2007-07-11 | 海城华宇集团 | Method for preparing magnesia by using dust removal powder of magnesia for shaft kiln and kibble powder of disused magnesite ore |
| CN100334026C (en) * | 2005-11-18 | 2007-08-29 | 东北大学 | Process for prepering active magnesium oxide |
| CN100427420C (en) * | 2006-03-16 | 2008-10-22 | 海城市西洋耐火材料有限公司 | Process for preparing high temperature vertical kiln oil firing medium magnesite |
| CN102030487A (en) * | 2009-09-28 | 2011-04-27 | 王全祥 | New process for preparing high-purity magnesium oxide by normal temperature carbonization and low temperature pyrolysis |
| CN105130213A (en) * | 2015-07-15 | 2015-12-09 | 后英集团海城市高新技术产品有限公司 | Process of purifying flue gas in magnesite clinker shaft kiln through light-calcined MgO pellet layer and improving strength of MgO pellet |
| CN105130213B (en) * | 2015-07-15 | 2017-09-01 | 后英集团海城市高新技术产品有限公司 | The technique of the gas cleaning of magnesia shaft furnace and raising MgO ball intensity through the light-burned MgO balls bed of material |
| CN113634587A (en) * | 2021-08-25 | 2021-11-12 | 昆明理工大学 | Resource utilization method for desulfurization and sulfur by using magnesite |
| CN113634587B (en) * | 2021-08-25 | 2023-01-31 | 昆明理工大学 | Resource utilization method for desulfurization and sulfur by using magnesite |
| CN116943808A (en) * | 2023-07-24 | 2023-10-27 | 重庆九瑞金属材料有限公司 | Magnesium oxide production device and process thereof |
| CN116943808B (en) * | 2023-07-24 | 2024-02-09 | 重庆九瑞金属材料有限公司 | Magnesium oxide production device and process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1234635C (en) | 2006-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2567977C2 (en) | Method of extraction of metals from aluminium-bearing and titaniferous ores and residual rock | |
| CN102390964A (en) | Steam-pressed environment-friendly brick produced by using coal gangue residues and manufacturing method thereof | |
| Pei et al. | A novel process to fully utilize red mud based on low-calcium sintering | |
| CN101913786B (en) | Method for preparing special cement by circulating fluidized bed combustion ash | |
| CN102351444B (en) | Method for producing high grade cement clinker from full waste residues through rapidly calcining at low temperature | |
| CN107352819A (en) | A kind of aluminium cell carbonaceous waste material is used for the method for producing calcium aluminum fluoride clinker | |
| CN102311136A (en) | Method for producing low iron aluminum sulfate by utilization of coal gangue | |
| CN108585009A (en) | A kind of production line and its technique preparing calcium aluminate powder using white clay | |
| CN112591776B (en) | Coupling use method by utilizing various industrial solid/hazardous wastes | |
| CN111807731B (en) | Method for cooperatively treating chlor-alkali salt mud in cement kiln | |
| CN104446060A (en) | Magnesium oxychloride cement | |
| CN105502974A (en) | Method for treating and utilizing nickel mineral metallurgy waste residues | |
| CN1234635C (en) | Clean economical circulatory producing method of magnesite | |
| CN102424408A (en) | Comprehensive utilization method of boric sludge | |
| CN102515234A (en) | Method for producing low-iron aluminum sulfate and polymeric aluminum ferric sulfate by using coal gangue | |
| CN105601134A (en) | Method for full use of coal gangue for preparing cement | |
| CA1188713A (en) | Process for producing hydraulic cement from dicalcium silicate | |
| CN107200488A (en) | The method that dry-process rotary kiln station-service aluminium cell carbonaceous waste material produces fluoroaluminate cement | |
| CN100338243C (en) | Aluminothermic reduction method and technology of giobertite calcination to produce magnesium | |
| CN108623293A (en) | The technique that a kind of ardealite and red mud prepare high white pottery ceramic material coproduction acid | |
| CN1280099A (en) | Technology for producing alumina via high alumina to silica ratio sintering process | |
| CN1275860C (en) | Process for producing alumina | |
| CN108609878A (en) | A kind of production line and its technique preparing aluminophosphates cementitious material using white clay | |
| CN1283581C (en) | Method of producing mineral polymerized material using k-enriched rock | |
| CN208327409U (en) | A kind of production line preparing calcium aluminate powder using white clay |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |