CN106241842A - The production method of light magnesium carbonate - Google Patents

The production method of light magnesium carbonate Download PDF

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Publication number
CN106241842A
CN106241842A CN201610755755.1A CN201610755755A CN106241842A CN 106241842 A CN106241842 A CN 106241842A CN 201610755755 A CN201610755755 A CN 201610755755A CN 106241842 A CN106241842 A CN 106241842A
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magnesium
filter
pyrolysis
liquid
magnesium carbonate
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CN106241842B (en
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朱广东
吉俊康
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Shanxi Baosheng Yuanhua New Material Co., Ltd
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Wenxi Yuanhua Metallurgical Materials Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F5/00—Compounds of magnesium
    • C01F5/24—Magnesium carbonates
    • 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
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • C01P2006/82—Compositional purity water content
    • 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

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treatment Of Sludge (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The invention discloses the production method of a kind of light magnesium carbonate, use and stack for many years, carbonization generates magnesium and the magnesium alloy flux slag of magnesium carbonate composition, the high concentration CO discharged by industries such as chemical fertilizer, oil, biochemical industries2Waste gas is raw material, under high pressure form carbonic acid and convert magnesium carbonate in dissolving slag, it is made to be converted into water soluble carbonate hydrogen magnesium, in vacuum filter, separation is filtered with impurity such as other water-fast calcium carbonate, then it is pyrolyzed, finished product is made in drying, villaumite in filtrate, and magnesium ion non-recovery drains into circulation liquid bath and recycles when being worth.

Description

The production method of light magnesium carbonate
Technical field
The invention belongs to industrial waste in recycling economy and recycle field, relate generally to magnesium metal and magnesium alloy waste residue is raw Produce the production method of light magnesium carbonate.
Background technology
Light magnesium carbonate is a kind of inorganic chemical product, is mainly used in rubber, cable rubber plastics-insulated layer Vulcanization Process of Rubber Accelerator, be again efficient thiofide light magnesium oxide produce raw material, magnesium carbonate is that a kind of senior alkali is fire-resistant Material, it is again the raw material of Organic chemical products fire retardant magnesium hydroxide, and in environmental protection industry, it is the removing of gas sweetening, denitration Agent.It is medicine magnesium salt and the raw material of much Veterinary Medicine production.The outlet chemical products that it or China are traditional, can be every year Country earns foreign exchange multi-billion dollar.
The traditional productive method of chemical engineering of light magnesium carbonate mainly has salt method, halogen double decomposition and dolomite to be raw material Dolomite method, China and in the world accounting weigh more than 70%, for current main production process.
Dolomite method is with dolomite as raw material, is released carbon dioxide through roast dolomite by carbonate decomposition and generates magnesium With the oxide of calcium, the digestion of dolime use water generates hydroxide and the mixture of water of magnesium calcium, exists with this mixture A kind of steel carbonizing apparatus carries out carbonation reaction.In reaction, magnesium hydroxide and calcium hydroxide and carbon dioxide and water reaction There is to neutralize the magnesium bicarbonate of water generation reaction dissolubility in the carbonic acid generated, calcium hydroxide then generates water-insoluble calcium carbonate. After stopped reaction, separating water miscible magnesium bicarbonate and water-insoluble calcium carbonate, water soluble carbonate hydrogen magnesium solution isolates use Steam is pyrolyzed, and generates water-insoluble magnesium carbonate, becomes light magnesium carbonate finished product after dewatered drying, and insoluble carbon Acid calcium separates and becomes product precipitated calcium carbonate after drying.
Summary of the invention
The present invention is to solve the recycling problem of metal current magnesium and magnesium alloy waste residue, it is provided that a kind of production lightweight The method of magnesium carbonate.
The present invention adopts the following technical scheme that realization:
The production method of a kind of light magnesium carbonate, comprises the steps:
(1), broken pulverizing
Magnesium refining waste residue, magnesium alloy smelting flux slag that pH value is 7-8 are crushed to the material powder within 100 mesh the most again；
(2), molten leaching is stirred
To expect that powder and normal-temperature water are mixed in the ratio of solid-to-liquid ratio 1:5 ~ 6, stir；
(3), carbonating
A, the serosity being uniformly mixed is squeezed in carbonators, concentration is reached more than 95% CO2With pressure more than 0.8MPa pressure Lower addition carbonators carries out carbonation reaction, is reacted to solids MgO in sample liquid outlet sample at the bottom of tower and < when 1.0%, releases Carbodiimide solution, enters carbodiimide solution accumulator tank, puts to outlet sample liquid solid Mg < 5% and enters to stop releasing；Again liquid feeding inflation in tower Carry out new round carburizing reagent；
B, carbonization tower top are released tail gas and are entered in gas-liquid separator, and the tail gas after fresh carbon dioxide gas and condensation dehydration is by valve Controlling to enter carbon-dioxide gas compressor import, liquids recovery utilizes；
(4), a vacuum filters
Carbodiimide solution adds to filter on the filter bag of belt vacuum filter position, after the screening after filtration enters cleaning section cleaning Discharging for manufacture of cement from belt vacuum filter band, filtrate drains into filtrate storage tank through water ring vacuum pump；
(5), pyrolysis
Filtrate in filtrate storage tank is squeezed in pyrolysis groove with centrifugal circulating pump, adds in pyrolysis groove with 0.8MPa water vapour Row pyrolysis, be pyrolyzed to MgO in liquid less than 0.1g/L time, pyrolysis mixed liquor put in pyrolytic behavior storage tank；
(6), secondary filter
Being squeezed into by pyrolysis mixed liquor and filter on pyrolytic behavior belt vacuum filter band, filter cake is discharged after cleaning, and filtrate recycles；
(7), dry
Filter cake through over cleaning is added dehydrator dry, be re-fed in pulverizer being ground into light magnesium carbonate finished product.
Present invention employs the technique that another reaction principle is different, using reaction principle is carbon dioxide life soluble in water One-tenth carbonic acid:
CO2+H2O→H2CO3, and the carbonic acid generated is in acid condition, there is following reaction again in carbonic acid,
CaCO3.MgCO3+CO2+H2O→MgHCO3+CaHCO3→MgHCO3+CaCO3↓ +H2O+CO2↑
Because in carbonation reaction, the MgHCO of generation3Stability is fine, and CaHCO3Decompose to give off CO at normal temperatures2And water, So being that calcium carbonate state presents at common state calcium.Magnesium, calcium salt is so made to separate, by instead under normal temperature condition Answer and make magnesium carbonate.By above-mentioned reaction, ironmaking flux activity white clouds matter Calx, marble are produced leftover pieces, metal The waste residue of carbonization for many years is discharged in magnesium factory dolomite barren rock, powder and magnesium refine.And utilize smelting iron and steel, petroleum refining, close Become medicine, the high concentration CO in magnesium metal production2With the CO by concentrating2Generate carbonic acid with water reaction to dissolve in above slag Generating water miscible magnesium bicarbonate and calcium bicarbonate after magnesium carbonate, and calcium carbonate, calcium carbonate reaction, calcium bicarbonate is unstable, After pressure, the calcium bicarbonate decomposition insoluble calcium carbonate of generation separates with magnesium bicarbonate, under pressure condition, and CO2Pressure is the biggest, and pH is the least, Acidity is the strongest, and response speed is the fastest.On the other hand, CO2The carbonic acid acidity of the highest generation of concentration is the strongest, improves pressure and increases CO2 Concentration is the optimum condition of reaction.
Said method produces light magnesium carbonate product, has both eliminated pollution, and the chemical industry producing again relatively high added value produces Product, reach to eliminate and pollute, turn harm into good, environmental protection and the purpose of resource utilization fully.
Flux in the refine and magnesium alloy production of magnesium metal is to have adsorbed a large amount of magnesium in magnesium refine and magnesium alloy production Oxide, adsorb saturated rear flux and lost efficacy, after the discharge of the flux of inefficacy, long-time and atmosphere, due to the sprinkling of rainwater, Chloride in flux slag runs off and is removed, and magnesium oxide, the absorbent lime Carbon Dioxide in Air in useless flux generates carbon Acid magnesium and calcium carbonate, the time is the longest, and carbonisation degree is the highest, often produces one ton of magnesium metal or magnesium alloy 0.2--0.35 to be discharged Flux waste residue about Dun.The magnesium metal of China has developed and has had nearly 30 years, and these waste residues the most never have and effectively reclaimed Utilizing, substantial amounts of waste residue is pulled away by some of the staff and reclaims wherein magnesium and Mg-alloy particles and the most directly discharge.Therefore waste residue is in part Area is highly enriched, and some areas are deposited in about million tons.It addition, the leftover pieces of Marble processing, grounds travel；Magnesium metal factory The granulated slag of dolomite mineral all contains 50% magnesium carbonate composition, it would however also be possible to employ the method tissue produces.
And at the synthesis ammonia plant with coal as raw material, and product is carbamide, when ammonium nitrate etc. is for product, ammonia carbon is uneven, also In some oil coal carbonization factory, synthesis gas purification decarburization has the most highly concentrated carbon dioxide to discharge, and pollutes.
This method combines improvement two kinds of refuses, produces light magnesium carbonate, and by-product recrement is used as cement producting material, Play and turn harm into good, turn waste into wealth.
The inventive method is reasonable in design, uses stacking the most original magnesium oxide carbonization to generate magnesium carbonate composition Flux slag, the high concentration CO discharged by the industry such as chemical fertilizer, oil, biochemical industry2Waste gas is raw material, under high pressure forms carbonic acid Convert and dissolve magnesium carbonate in slag so that it is be converted into water soluble carbonate hydrogen magnesium, and the impurity such as other water-fast calcium carbonate is very Filtering in empty filter and separate, be then pyrolyzed, dry and make finished product, villaumite in filtrate, magnesium ion non-recovery drains into when being worth and follows Ring liquid bath recycles.
Accompanying drawing explanation
Fig. 1 represents the structure connection diagram of light magnesium carbonate reclaimer.
In figure: 1-raw material waste residue, 2-disintegrating machine, 3-pulverizer, 4-absorber, 5-circulates mix and blend groove, 6-circulation fluid Fluid filling pump, 7-recycle liquid pump, 8-carbonators, 9-tail gas separation groove, 10-carbodiimide solution accumulator tank, 11-carbodiimide solution recovery pump, 12-bis- Carbonoxide compressor, belt vacuum filter of 13-, 14-Water-ring vacuum unit, 15-pure carbodiimide solution storage tank, the pure carbonization of 16- Liquid pump, 17-is pyrolyzed groove, 18-pyrolytic behavior storage tank, 19-pyrolytic behavior delivery pump, 20-condenser, No. bis-belt vacuum filters of 21-, 22-magnesium carbonate filter cake, No. bis-belt vacuum filter vacuum pump set of 23-, 24-secondary filter liquid storage tank, 25-secondary filter liquid Pump, 26-high angle belt conveyer conveyer, 27-thick light magnesium carbonate bunker, 28-dehydrator conveyer, 29-dehydrator, 30-finished product Pulverizer, 31-finished light magnesium carbonate, 32-be used as cement raw material, the external steam pipework of L1-, the external cooling water pipeline of L2-, L3-external carbon dioxide pipeline, L4-boiler carrys out hot-blast pipe line, and L5-removes mixing circulation groove recycle-water pipeline, and L6-reclaims hot water and goes Boiler pipe.
Detailed description of the invention
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described in detail.
First, the concrete annexation of light magnesium carbonate production system is as it is shown in figure 1, raw material waste residue 1 is successively through disintegrating machine 2 Circulating mix and blend groove 5 with entering after pulverizer 3, in described circulation mix and blend groove 5, liquid passes through recycle liquid pump 7 and absorber 4 circulation stirrings；In described circulation mix and blend groove 5, liquid adds carbonators 8, described carbonators 8 top gas by fluid filling pump 6 Outlet connects gas-liquid separator 9 top inlet, and described gas-liquid separator 9 top exit connects carbon-dioxide gas compressor 12 import, Described gas-liquid separator 9 outlet at bottom connects circulation mix and blend groove 5；Described carbonators 8 bottom gas inlet is simultaneously and dioxy Change carbon compressor 12 import and external carbon dioxide pipeline L3 connects；Described carbonators 8 bottom liquid outlet connects carbodiimide solution and returns Receiving groove 10, in described carbodiimide solution accumulator tank 10, liquid adds to the mistake of a belt vacuum filter 13 by carbodiimide solution recovery pump 11 Filter portion, filtrate enters pure carbodiimide solution storage tank 15 by Water-ring vacuum unit 14, and in described pure carbodiimide solution storage tank 15, liquid is by pure Carbonization liquid pump 16 add to be pyrolyzed groove (17), the thermal source of described pyrolysis groove 17 from external steam pipework L1, described pyrolysis groove 17 Top gas outlet is connected with the tube side import of condenser 20, and the tube side of described condenser 20 exports by going mixing circulation groove to return Receive water lines L5 to circulation mix and blend groove 5；The shell side import of described condenser 20 connects external cooling water pipeline L2, its shell side Outlet connects recovery hot water and removes boiler pipe L6.The outlet of described pyrolysis groove 17 connects pyrolytic behavior storage tank 18, described pyrolytic behavior storage tank In 18, liquid adds to secondary belt vacuum filter 21 filter house by pyrolytic behavior delivery pump 19, and screening is magnesium carbonate filter cake 22, Filtrate enters secondary filter liquid storage tank 24, described secondary filter liquid storage tank 24 by secondary belt vacuum filter vacuum pump set 23 Interior liquid is recycled to circulate mix and blend groove 5 by secondary filtrate pump 25；Described magnesium carbonate filter cake 22 carries through high angle belt conveyer Thick light magnesium carbonate bunker 27 delivered to by machine 26, and in described thick light magnesium carbonate bunker 27, material is delivered to by dehydrator conveyer 28 Dehydrator 29, is crushed to finished light magnesium carbonate 31 through finished product grinder 30 after drying.
It is applied to said system, the production method of light magnesium carbonate, comprise the steps:
(1), broken, pulverizing
As it is shown in figure 1, will stack through long-term, after immersion, pH value presents the magnesium refining waste residue between 7-8 and magnesium alloy flux slag, It is referred to as raw material waste residue 1, sequentially passes through disintegrating machine 2 and pulverizer 3, be crushed to the material powder within 100 mesh the most again.
(2), molten leaching is stirred
As it is shown in figure 1, put into by material powder in circulation mix and blend groove 5, and normal-temperature water and the mixing of each recycle-water are by solid-to-liquid ratio 1:5-6 Ratio mixing, squeeze in absorber 4 with recycle liquid pump 8, utilize negative pressure in absorber, absorb the dust in crushing process, logical Cross cyclic absorption to stir.
(3), carbonating
A squeezes into the pressure liner of 15-18M as it is shown in figure 1, process (2) is absorbed the serosity fluid filling pump 6 being uniformly mixed In 316L stainless steel carbonators 8, carbonators is arranged side by side 3, can carry out carbonization, it is also possible to carry out carbonization successively simultaneously, Realize producing continuously.Start CO2Compressor 12, reaches by concentration at more than 95% CO2, carry out in the pressure more than 0.8MPa adds tower Carbonation reaction, is reacted to solids MgO in sample liquid outlet sample at the bottom of tower and < when 1.0%, releases carbodiimide solution and reclaim to carbodiimide solution Groove 10, puts to sample liquid outlet sample and stops when solids MgO < 5% enters releasing.In tower, liquid feeding inflation carries out a new round again Carburizing reagent.Finished light magnesium carbonate is to utilize chemical fertilizer, petroleum refining, the highly concentrated CO of biochemical industry discharge2With water under high pressure The carbonic acid reaction formed generates magnesium bicarbonate and extracts.
B is as it is shown in figure 1, carbonization tower top is released in tail gas entrance gas-liquid separator 9, and fresh carbon dioxide gas and condensation are de- Tail gas after water is entered carbon-dioxide gas compressor 12 import by Valve controlling, and liquid is flowed to circulation mix and blend groove by Valve controlling Recycle in 5.
(4), a vacuum filters
Added to as it is shown in figure 1, carbonators in a of process (3) is released liquid by carbodiimide solution pressure itself or recovery pump 11 One time the upper position of filtering of vacuum band-type filter machine 13 band is filtered, and the screening after filtration enters after cleaning section is cleaned true from belt Discharge on empty filter band, once cross filtering residue and include silicon dioxide, calcium oxide and aluminium oxide and a small amount of fluorite, recyclable as water Mud raw material 32, for manufacture of cement.Filtrate drains into pure carbodiimide solution storage tank 15 through liquid-ring type vacuum pump set 14.
(5), steam pyrolysis
As it is shown in figure 1, add in pyrolysis groove 17 with filtrate in the filtrate storage tank 15 of 16 processes (4) of pure carbonization liquid pump, use 0.8MPa steam (L1) add pyrolysis groove in be pyrolyzed, be pyrolyzed in liquid without magnesium ion, be pyrolyzed mixed liquor put into heat Solve in liquid storage tank 18.Pyrolysis gas is discharged in condenser 20 with cooling water (L2) cooling, pyrolysis generation after cooling Carbon dioxide gas and fresh carbon dioxide gas enter carbon-dioxide gas compressor 12 import.After pyrolysis gas cooling, condensed water enters condensation Water storage tank, is squeezed in process (1) circulation mix and blend groove 5 by condensed water centrifugal pump, reclaims hot water (L6), steam for boiler for producing Vapour.
(6), secondary filter
As it is shown in figure 1, process (5) pyrolysis mixed liquor pyrolytic behavior delivery pump 19 after pyrolysis is squeezed into secondary belt vacuum mistake Filter group 21 band is upper to be filtered, and magnesium carbonate filter cake 22 is discharged after cleaning, and filtrate is reclaimed through secondary belt vacuum filter group 23 and entered Secondary filter liquid storage tank 24, then in secondary filter pump 25 is recycled to the circulation mix and blend groove 5 of process (2), chlorine in filtrate U content carries out chloride recovery utilization when reaching more than 10g/L, beats to process (2) mixing circulation with centrifugal pump less than during 1g/L Liquid bath is circulated recovery.
(7), dry
As it is shown in figure 1, by process (6) through the magnesium carbonate filter cake 22 of over cleaning, inclination angle belt conveyor 26 before adding dehydrator Crude product bunker 27 is stored, and then adds to dehydrator 29 by dehydrator conveyer 28, and with 0.8MPa steam, (boiler carrys out hot blast L4) heating, drying, < 0.5% is qualified, and through finished product grinder 30 after cooling, packaging light magnesium carbonate finished product 31 enters in drying to moisture Storehouse.
It should be noted last that, above example is only in order to illustrate technical scheme and unrestricted, although ginseng It is described in detail according to the embodiment of the present invention, it will be understood by those within the art that, to technical scheme Modifying or equivalent, without departure from the spirit and scope of technical scheme, it all should contain claim In protection domain.

Claims (1)

1. the production method of a light magnesium carbonate, it is characterised in that: comprise the steps:
(1), broken pulverizing
Magnesium refining waste residue, magnesium alloy smelting flux slag that pH value is 7-8 are crushed to the material powder within 100 mesh the most again；
(2), molten leaching is stirred
To expect that powder and normal-temperature water are mixed in the ratio of solid-to-liquid ratio 1:5 ~ 6, stir；
(3), carbonating
A, the serosity being uniformly mixed is squeezed in carbonators, concentration is reached more than 95% CO2With pressure more than 0.8MPa pressure Lower addition carbonators carries out carbonation reaction, is reacted to solids MgO in sample liquid outlet sample at the bottom of tower and < when 1.0%, releases Carbodiimide solution, enters carbodiimide solution accumulator tank, puts to outlet sample liquid solid Mg < 5% and enters to stop releasing；Again liquid feeding inflation in tower Carry out new round carburizing reagent；
B, carbonization tower top are released tail gas and are entered in gas-liquid separator, and the tail gas after fresh carbon dioxide gas and condensation dehydration is by valve Controlling to enter carbon-dioxide gas compressor import, liquids recovery utilizes；
(4), a vacuum filters
Carbodiimide solution adds to filter on the filter bag of belt vacuum filter position, after the screening after filtration enters cleaning section cleaning Discharging for manufacture of cement from belt vacuum filter band, filtrate drains into filtrate storage tank through water ring vacuum pump；
(5), pyrolysis
Filtrate in filtrate storage tank is squeezed in pyrolysis groove with centrifugal circulating pump, adds in pyrolysis groove with 0.8MPa water vapour Row pyrolysis, be pyrolyzed to MgO in liquid less than 0.1g/L time, pyrolysis mixed liquor put in pyrolytic behavior storage tank；
(6), secondary filter
Being squeezed into by pyrolysis mixed liquor and filter on pyrolytic behavior belt vacuum filter band, filter cake is discharged after cleaning, and filtrate recycles；
(7), dry
Filter cake through over cleaning is added dehydrator dry, be re-fed in pulverizer being ground into light magnesium carbonate finished product.
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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN107723485A (en) * 2017-10-24 2018-02-23 闻喜县远华冶金材料有限公司 The recycling method of manganese in magnesium alloy flux waste residue
CN107746968A (en) * 2017-10-24 2018-03-02 闻喜县远华冶金材料有限公司 The recovery method of residual Re in magnesium-rare earth flux slag
CN109279630A (en) * 2018-11-28 2019-01-29 南京浦世环境科技发展有限公司 The device and method of light magnesium carbonate is refined in a kind of magnesium carbonate product from carbon sequestration
CN112645368A (en) * 2020-12-25 2021-04-13 河北工程大学 Resource utilization method of waste magnesium oxide catalyst
CN112811448A (en) * 2021-01-18 2021-05-18 朱广东 Recovery process of magnesium oxide reducing slag
CN113683103A (en) * 2021-09-30 2021-11-23 沈阳工业大学 Light magnesium carbonate production device and method based on resource utilization

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107723485A (en) * 2017-10-24 2018-02-23 闻喜县远华冶金材料有限公司 The recycling method of manganese in magnesium alloy flux waste residue
CN107746968A (en) * 2017-10-24 2018-03-02 闻喜县远华冶金材料有限公司 The recovery method of residual Re in magnesium-rare earth flux slag
CN107723485B (en) * 2017-10-24 2019-08-30 闻喜县远华冶金材料有限公司 The recycling method of manganese in magnesium alloy flux waste residue
CN109279630A (en) * 2018-11-28 2019-01-29 南京浦世环境科技发展有限公司 The device and method of light magnesium carbonate is refined in a kind of magnesium carbonate product from carbon sequestration
CN112645368A (en) * 2020-12-25 2021-04-13 河北工程大学 Resource utilization method of waste magnesium oxide catalyst
CN112811448A (en) * 2021-01-18 2021-05-18 朱广东 Recovery process of magnesium oxide reducing slag
CN113683103A (en) * 2021-09-30 2021-11-23 沈阳工业大学 Light magnesium carbonate production device and method based on resource utilization
CN113683103B (en) * 2021-09-30 2023-11-07 沈阳工业大学 Light magnesium carbonate production device and method based on resource utilization

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