CN109022830A - A kind of microwave-ultrasonic combines the method for preparing high chromium product with salt Ore Leaching chromite - Google Patents
A kind of microwave-ultrasonic combines the method for preparing high chromium product with salt Ore Leaching chromite Download PDFInfo
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- CN109022830A CN109022830A CN201810838703.XA CN201810838703A CN109022830A CN 109022830 A CN109022830 A CN 109022830A CN 201810838703 A CN201810838703 A CN 201810838703A CN 109022830 A CN109022830 A CN 109022830A
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- leached mud
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000011651 chromium Substances 0.000 title claims abstract description 53
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000002386 leaching Methods 0.000 title claims abstract description 15
- 150000003839 salts Chemical class 0.000 title claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 6
- 238000004321 preservation Methods 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 6
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- 229910052681 coesite Inorganic materials 0.000 claims description 5
- 229910052906 cristobalite Inorganic materials 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052682 stishovite Inorganic materials 0.000 claims description 5
- 229910052905 tridymite Inorganic materials 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 14
- 238000001354 calcination Methods 0.000 abstract description 3
- 229910000604 Ferrochrome Inorganic materials 0.000 description 21
- 238000004519 manufacturing process Methods 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 10
- 229910001021 Ferroalloy Inorganic materials 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 229910000851 Alloy steel Inorganic materials 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- RAGLTCMTCZHYEJ-UHFFFAOYSA-M azanium;chromium(3+);hydrogen sulfate Chemical compound [NH4+].[Cr+3].OS([O-])(=O)=O.OS([O-])(=O)=O RAGLTCMTCZHYEJ-UHFFFAOYSA-M 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 235000021438 curry Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229910021555 Chromium Chloride Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910021577 Iron(II) chloride Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 241000982035 Sparattosyce Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 150000001845 chromium compounds Chemical class 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- QSWDMMVNRMROPK-UHFFFAOYSA-K chromium(3+) trichloride Chemical compound [Cl-].[Cl-].[Cl-].[Cr+3] QSWDMMVNRMROPK-UHFFFAOYSA-K 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/32—Obtaining chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/10—Hydrochloric acid, other halogenated acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of methods that microwave-ultrasonic joint prepares high chromium product with salt Ore Leaching chromite, belong to microwave metallurgical and chromite technical field.It is that 200 mesh or less obtain chromite powder that chromite, which is crushed to granularity,；It according to liquid-solid ratio is that concentration is added is 11.6~12.4mol/L hydrochloric acid solution by 2~3:0.5~1mL/g by obtained chromite powder, it heats up 400~600 DEG C under the conditions of microwave power is 1000~1500g/W, and under the conditions of ultrasonic power is 100~180W, supersonic frequency is 20~28KHz heat preservation leach 20~60min, leach after the completion of be filtered, dry after obtain leached mud；It is 200 mesh or less that obtained leached mud, which is smashed to granularity, then the Antaciron reducing agent that leached mud quality 75~100% is added is uniformly mixed, it is that 1100~1450 DEG C of 10~40min of constant temperature microwave calcining obtain high chromium product in temperature at 1000~1500g/W of microwave power.Present invention process is simple, process is short, and strong operability, cost is relatively low.
Description
Technical field
The present invention relates to a kind of methods that microwave-ultrasonic joint prepares high chromium product with salt Ore Leaching chromite, belong to
Microwave metallurgical and chromite technical field.
Background technique
There is no pure chromium in nature, what is had now been found that has more than 50 containing chrome mineral, but most of chrome content is lower, distribution
Dispersion, industrial utility value are lower.Chromite, the i.e. natural aggregate of chrome spinellides, are that chromium is obtained in world economy
Unique industrial source.The main component of chromite is the oxide of iron, magnesium and chromium, and general formula is represented by (FeO Cr2O3)。
Crome metal is brittle metal, cannot separately as metal material, but with the metals such as iron, cobalt, nickel, tungsten, titanium, aluminium, copper
Alloy can be smelted into, is the engineering material with heat resistance, heat resistance, wearability and property.Currently, China develop and
The high temperature alloy trade mark of production has hundreds of, including ferrous alloy, cobalt-base alloys and nickel-base alloy, and chromium is its kind of important conjunction
Gold element.Crome metal is widely used in the spy of the industry such as aviation, nuclear reactor, automobile, shipbuilding, chemical industry, military project as alloying constituent
Kind alloy.Powdery chromium is for the electrode coating of special steel and for thermo electric material such as nickel filament etc..
With the fast development of steel-smelting technology, producing special steel and require the cleanliness of ferroalloy high, quality is stablized, while with
The refinement of steel grade, the demand to middle-low-carbon ferrochrome it is also growing.
Ferrochrome is with chromium and iron ferroalloy as main component, is the important source material of steel and iron industry.Preparing high carbon ferro-chrome has
Blast furnace process method and electric furnace smelting method.Si Tuoda (Stordart) in 1820 and faraday (Faraday) are successfully in reduction chromium
Iron is added when ore, ferrochrome is made.1821 P. Bell Di Er (Bertheir) in crucible heat charcoal, chromium oxide with
The mixture of iron oxide produces ferrochrome.This method be in use to always 1857 E.C. Fu Lei meter (Fremy) use Tasmania
(Tasmania) siderochrome mine smelts in blast furnace and obtains the Tasmania pig iron containing Cr7%~8%.1870~1880 years, blast furnace
The ferrochrome of production contains Cr30%~40%, C10%~20%.Blast furnace process high carbon ferro-chrome is replaced to be a major progress with electric furnace.
1900, electric furnace smelting method was transferred to large-scale industrial production by French P.L.T. angstroms of Shandong (H é roult).Preparing low-carbon ferrochromium has
Thermit reduction, electro silicothermic process, hot-metal process and vacuum solid-state decarburization process.In early 20th century, the method for producing medium carbon ferrochrome is main
There are 3 kinds: (1) refining high carbon ferro-chrome with chrome ore；(2) blow high carbon ferro-chrome in Bei Saimai furnace；(3) match when producing low-carbon ferrochromium
Enter high carbon ferro-chrome.Ferrochrome is an important species of ferroalloy, the development and entire ferroalloy production development of ferrochrome production
It is undivided, and ferroalloy production has obtained constantly developing under the drive of steel and iron industry.From ferroalloy method, development rule
Mould and technical equipment etc. are summarized, ferrochrome three developing periods of production point: blast furnace process period, blast furnace and electric furnace
Extensive not developing period, move towards modernization period.Ferrochrome can improve the physical chemistry and mechanical performance of steel and casting, improve steel
With the quality of casting.The production of modern superior alloy steel need to consume the production consumption of a large amount of ferrochromes, especially stainless steel
The 80% of chromium ore resource.Ferrochrome is the important alloying constituent for producing steel alloy, is widely used in high-alloy steel, obtains steel very high
Use value.Ferrochrome is continued to develop using being the development and application with steel alloy.Meanwhile ferrochrome is also more and more extensive answers
For nonferrous metallurgy and chemical industry, such as it is used as the anode material of production chromium compounds and chromium plating.It follows that ferrochrome production is one
A important industrial department, there is vast potential for future development.
Since chromium and carbon affinity are strong, it is difficult that carbon-free metal chromium is made.Early in 1856 by S.C. Deville
(Deville), E.C. Fu Lei meter (Fremy) and F. Waller (W hler) etc. produce pure chromium with sodium, aluminum and zinc reduction chromium chloride.H.
Goldschmidt, Richard Benedict (Goldschmidt) restores the commercial scale metal of hydrogenation chromium between 1895~1908 years with aluminothermic process
Chromium success.Electrolysis chromium is made in w. this life (Bunsen) report electrolytic chlorination chromium aqueous solution within 189 years.H.R. Callvert in 1905
(Garveth) it is made with electrolysis chromium-ammonium-alum aqueous solution with B.E. curry (Curry) report and is electrolysed chromium, this method is adopted in the U.S.
With about 30 years.Main problem is that electrical efficiency is low, energy consumption is high and cost is expensive.U.S. Bureau was through research in 10 years, in 1946-
Nineteen fifty repeatedly reports electrolysis chromium-ammonium-alum aqueous solution production electrolysis chromium production technology.
Pure chromium is prepared using chromite in the prior art, chromite is mixed with soda ash first, is then roasted in air,
Product of roasting leaches in water, and sulphur powder then is added in leached mud and vapor is restored, hydrogen-oxygen is added in reducing slag after filtering
Change calcium to be calcined, then adds reagent progress melting and crome metal is finally prepared.Metal is prepared known to from the above
The process of chromium is complicated, and the reagent of long flow path, addition is more.
Summary of the invention
For the above-mentioned problems of the prior art and deficiency, the present invention, which provides a kind of microwave-ultrasonic and combines, uses hydrochloric acid
Leach the method that chromite prepares high chromium product.Chromite of the present invention uses salt Ore Leaching, benefit under microwave-ultrasonic synergy
There is good microwave absorbing property with chromite powder, and other impurities ion can be dissolved in the sour generation salt that react in chromite powder
The compound of water and at high temperature easy decomposition remove most foreign ions, and chromium then is prepared in progress microwave calcining and contains
Higher high chromium product is measured, high chromium product, which only needs back to carry out melting processing again, can obtain crome metal.The present invention passes through following
Technical solution is realized.
A kind of microwave-ultrasonic combines the method for preparing high chromium product with salt Ore Leaching chromite, the specific steps of which are as follows:
Chromite is crushed to granularity to obtain chromite powder below 200 mesh by step 1；
Step 2, by chromite powder that step 1 obtains according to liquid-solid ratio be 2~3:0.5~1mL/g be added concentration be 11.6~
12.4mol/L hydrochloric acid solution is warming up to 400~600 DEG C under the conditions of microwave power is 1000~1500g/W, and in ultrasonic function
20~60min is leached in heat preservation under the conditions of rate is 100~180W, supersonic frequency is 20~28KHz, be filtered after the completion of leaching,
Leached mud is obtained after drying；
It is 200 mesh hereinafter, leached mud quality 75~100% is then added that step 3, the leached mud for obtaining step 2, which are smashed to granularity,
Antaciron reducing agent be uniformly mixed, at 1000~1500g/W of microwave power, temperature be 1100~1450 DEG C of constant temperature it is micro-
Wave roasts 10~40min and obtains high chromium product.
Chromite includes following mass percent component: Cr in the step 12O340.82%, SiO25.02%,
Al2O313.04%, CaO2.4%, MgO10.83%, TFe19.85%, Cr2O3/FeO1.69。
Leaching in above-mentioned steps 2 wants reaction equation as follows:
FeO+2HCl=FeCl2+H2O
Fe2O3+6HCl=2FeCl3+3H2O
Al2O3+6HCl=2AlCl3+3H2O
CaO+2HCl=CaCl2+H2O
MgO+2HCl=MgCl2+H2O。
The beneficial effects of the present invention are:
(1) chromite of the present invention uses salt Ore Leaching under microwave-ultrasonic synergy, has good suction using chromite powder
Wave property, and other impurities ion can react with acid and generate salt and be dissolved in the compound of water and easy at high temperature in chromite powder
It decomposes and removes most foreign ions, the higher high chromium product of chromium content, Gao Ge then is prepared in progress microwave calcining
Product, which only needs back to carry out melting processing again, can obtain crome metal.
(2) present invention is compared with conventional heating, and faster, reduction temperature is low, the time is short, chromium for the heating rate that the present invention reacts
High conversion rate；Chromite powder can be used directly in the present invention, is not necessarily to agglomeration, shortens smelting process, realizes energy-saving.
(3) present invention process is simple, process is short, and strong operability, cost is relatively low.
(4) present invention is environment friendly and pollution-free, it is clear that economic cost is low, is an effective way for producing crome metal.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
As shown in Figure 1, the microwave-ultrasonic combines the method for preparing high chromium product with salt Ore Leaching chromite, specific steps
It is as follows:
Chromite is crushed to granularity to obtain chromite powder below 200 mesh by step 1；Chromite includes following mass percent
Component: Cr2O340.82%, SiO25.02%, Al2O313.04%, CaO2.4%, MgO10.83%, TFe19.85%, Cr2O3/
FeO1.69；
Chromite powder that step 1 obtains according to liquid-solid ratio is that concentration is added is that 11.6mol/L hydrochloric acid is molten to 2:0.5mL/g by step 2
Liquid is warming up to 600 DEG C under the conditions of microwave power is 1500g/W, and ultrasonic power is 100W, supersonic frequency is 20KHz item
Under part heat preservation leach 60min, leach after the completion of be filtered, dry after obtain leached mud；
It is 200 mesh hereinafter, the silicon of leached mud quality 100% is then added that step 3, the leached mud for obtaining step 2, which are smashed to granularity,
Ferroalloy reducing agent (68# Antaciron) is uniformly mixed, and is 1100 DEG C of constant temperature microwaves in temperature at microwave power 1000g/W
Roasting 40min obtains high chromium product (chromium content is 13wt% in high chromium product).
Conversion ratio by chromium in this method chromite is 73.25%.
Embodiment 2
As shown in Figure 1, the microwave-ultrasonic combines the method for preparing high chromium product with salt Ore Leaching chromite, specific steps
It is as follows:
Chromite is crushed to granularity to obtain chromite powder below 200 mesh by step 1；Chromite includes following mass percent
Component: Cr2O340.82%, SiO25.02%, Al2O313.04%, CaO2.4%, MgO10.83%, TFe19.85%, Cr2O3/
FeO1.69；
Chromite powder that step 1 obtains according to liquid-solid ratio is that concentration is added is that 12.4mol/L hydrochloric acid is molten to 3:1mL/g by step 2
Liquid is warming up to 400 DEG C under the conditions of microwave power is 1000g/W, and ultrasonic power is 180W, supersonic frequency is 28KHz item
Under part heat preservation leach 20min, leach after the completion of be filtered, dry after obtain leached mud；
It is 200 mesh hereinafter, the silicon of leached mud quality 75% is then added that step 3, the leached mud for obtaining step 2, which are smashed to granularity,
Ferroalloy reducing agent (72# Antaciron) is uniformly mixed, and is 1450 DEG C of constant temperature microwaves in temperature at microwave power 1500g/W
Roasting 10min obtains high chromium product (chromium content is 20wt% in high chromium product).
Conversion ratio by chromium in this method chromite is 95.47%.
Embodiment 3
As shown in Figure 1, the microwave-ultrasonic combines the method for preparing high chromium product with salt Ore Leaching chromite, specific steps
It is as follows:
Chromite is crushed to granularity to obtain chromite powder below 200 mesh by step 1；Chromite includes following mass percent
Component: Cr2O340.82%, SiO25.02%, Al2O313.04%, CaO2.4%, MgO10.83%, TFe19.85%, Cr2O3/
FeO1.69；
Chromite powder that step 1 obtains according to liquid-solid ratio is that concentration is added is that 12.0mol/L hydrochloric acid is molten to 3:1mL/g by step 2
Liquid is warming up to 500 DEG C under the conditions of microwave power is 1300g/W, and ultrasonic power is 120W, supersonic frequency is 24KHz item
Under part heat preservation leach 40min, leach after the completion of be filtered, dry after obtain leached mud；
It is 200 mesh hereinafter, the silicon of leached mud quality 80% is then added that step 3, the leached mud for obtaining step 2, which are smashed to granularity,
Ferroalloy reducing agent (70# Antaciron) is uniformly mixed, and is 1200 DEG C of constant temperature microwaves in temperature at microwave power 1200g/W
Roasting 30min obtains high chromium product (chromium content is 18wt% in high chromium product).
Conversion ratio by chromium in this method chromite is 88.4%.
In conjunction with attached drawing, the embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (2)
1. a kind of microwave-ultrasonic combines the method for preparing high chromium product with salt Ore Leaching chromite, it is characterised in that specific step
It is rapid as follows:
Chromite is crushed to granularity to obtain chromite powder below 200 mesh by step 1；
Step 2, by chromite powder that step 1 obtains according to liquid-solid ratio be 2~3:0.5~1mL/g be added concentration be 11.6~
12.4mol/L hydrochloric acid solution is warming up to 400~600 DEG C under the conditions of microwave power is 1000~1500g/W, and in ultrasonic function
20~60min is leached in heat preservation under the conditions of rate is 100~180W, supersonic frequency is 20~28KHz, be filtered after the completion of leaching,
Leached mud is obtained after drying；
It is 200 mesh hereinafter, leached mud quality 75~100% is then added that step 3, the leached mud for obtaining step 2, which are smashed to granularity,
Antaciron reducing agent be uniformly mixed, at 1000~1500g/W of microwave power, temperature be 1100~1450 DEG C of constant temperature it is micro-
Wave roasts 10~40min and obtains high chromium product.
2. microwave-ultrasonic according to claim 1 combines the method for preparing high chromium product with salt Ore Leaching chromite,
Be characterized in that: chromite includes following mass percent component: Cr in the step 12O340.82%, SiO25.02%,
Al2O313.04%, CaO2.4%, MgO10.83%, TFe19.85%, Cr2O3/FeO1.69。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114105199A (en) * | 2021-11-24 | 2022-03-01 | 四川省绵阳市华意达化工有限公司 | Roasting method for improving chromium and aluminum conversion rate of chromite |
| CN117286337A (en) * | 2023-09-18 | 2023-12-26 | 河北北方铸业有限公司 | Method for recovering chromium from chromite sand |
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| CN114105199B (en) * | 2021-11-24 | 2024-01-02 | 四川省绵阳市华意达化工有限公司 | Roasting method for improving chromium and aluminum conversion rate of chromite |
| CN117286337A (en) * | 2023-09-18 | 2023-12-26 | 河北北方铸业有限公司 | Method for recovering chromium from chromite sand |
| CN117286337B (en) * | 2023-09-18 | 2024-03-15 | 河北北方铸业有限公司 | Method for recovering chromium from chromite sand |
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