CN109988914A - The Fast And Accurate Determination method of chromium and the extraction of chromium manufacture Product Process - Google Patents

The Fast And Accurate Determination method of chromium and the extraction of chromium manufacture Product Process Download PDF

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CN109988914A
CN109988914A CN201810030324.8A CN201810030324A CN109988914A CN 109988914 A CN109988914 A CN 109988914A CN 201810030324 A CN201810030324 A CN 201810030324A CN 109988914 A CN109988914 A CN 109988914A
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唐翔
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    • 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
    • C22B3/065—Nitric 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
    • 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
    • C22B3/08—Sulfuric acid, other sulfurated 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
    • 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
    • C22B34/00—Obtaining refractory metals
    • C22B34/30—Obtaining chromium, molybdenum or tungsten
    • C22B34/32—Obtaining chromium
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
    • C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
    • C25C1/10—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese of chromium or manganese
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/28—Electrolytic cell components
    • 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

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Abstract

The present invention relates to the extractions of a kind of Fast And Accurate Determination method of chromium and chromium to manufacture Product Process, by the way that acid dissolution substance containing chromium: crome metal, evanohm, chromite, chromium compound is added, add impurity in extraordinary substance removal chromium solution, high-purity chromium solution is made, chemical method is carried out to chromium solution again and instrument is analyzed, chromium system product is made in the content and extraction chromium for quickly measuring chromium.This method is due to first having purified metal chromium ions, influence of other metal ions to chromium is sufficiently eliminated, keeps the measurement of chromium very quick accurate, the chromium purity is high of extraction, the chromium series high-end product of high-quality is made, is widely used in demand of the different field to chromium system product.

Description

The Fast And Accurate Determination method of chromium and the extraction of chromium manufacture Product Process
Technical field
The present invention relates to a kind of Fast And Accurate Determination of chromium and extraction processes, belong to fine chemistry industry analysis, metallurgy and chemical industry Manufacturing field.
Background technique
Chromium plays an important role in the national economic development.It is widely used in aerospace, high-end weapon, electronic information The fields such as technology, biological medicine, cosmetics, food, health care product, plating, leather, ceramics, pigment.
Chromium is that french chemist in 1797 irrigates Crane analysis crocoite discovery, chromic acid is made with crocoite, and in graphite earthenware Reduction with carbon obtains light gray crome metal in crucible.The production of crome metal, both at home and abroad mainly using chrome green as raw material, using aluminium Thermal method, carbon reduction method, fusion electrolysis method are produced, and are had only a few enterprise to produce pure chromium using sodium, aluminium, zinc reduction chromium chloride, are electrolysed Chromium chloride solution, chromic acid aqueous solution, chromic ammonium alum aqueous solution produce chromium.Early in the iodate chromium heat of model Acker ear report in 1932 High Pure Chromium 99.99% is made in decomposition method, but because cost is excessively high, can only make specific use.
Production chrome green is all to use first to produce hexavalent chromate or chromic anhybride with blast furnace roasting method both at home and abroad, The chromium hydroxide for producing chrome green or reduction of hexavalent chromium production through reduction method again calcines chrome green processed again.
During using aluminothermic process, carbon reduction method, fusion electrolysis method production crome metal, a certain amount of metal joined As fluxing agent, for deoxygenation, sulphur, nitrogen metallic addition, cause the impurity such as heavy metal, aluminium, silicon in the crome metal of production to contain Amount is high, and uses content of beary metal in the crome metal of the productions such as industrial chromic chloride, chromic ammonium alum, chromic anhybride, chromium hydroxide also very high, It is difficult the purity for making chromium reach 99.5%.Content of beary metal in other chromic salts and chromium compound, Organic Chromium is high.
The international and domestic detection method to chromium generally uses the atom of oxidation-reduction method, instruction development process and analysis instrument to inhale Receipts method, photometry, colorimetric method.Maximum problem, in the process of detection chromium, since the sixth of the twelve Earthly Branches is known and unknown gold containing there are many in chromium The presence of category takes part in color similar in same chromium and property is shown, cause to detect in the reagent oxidation reduction process of addition Chromium content it is higher.Although some chromium detection methods joined other metal eliminants in advance, the impurity of removal is too limited, causes Make the equally higher many of chromium result of detection, and from the point of view of the detection method of current existing chromium, detection process is complicated, required Of long duration, at high cost, accuracy is low, and the outstanding problem of most critical is that the chromium actual value of detection is higher.The country has enterprise to invent For the detection method of microelement in Cr VI chromate, the patent No.: 201310342781.8 publication date: 2013.11.20 is only It is simply to consider to remove lead therein, barium metal, and in sexavalence chromic salts production process, chromate natively can directly be removed Lead, barium, the strontium heavy metal in solution are removed, but does not have method removing to other metals, still causes the result of the chromium of detection inaccurate Really, no practical application value.
Summary of the invention
It is an object of the present invention to change the detection method of original chromium, it is new to invent new chromium detection method for innovation and development It is faster accurate to make the measurement of chromium, while chromium being purified from many kinds of substance and is come out for technique, and the chromium for producing high-end high-quality produces Product meet the needs of all trades and professions are to high-end chromium system product, bring benefit to the mankind.
A kind of Fast And Accurate Determination method of chromium and the extraction of chromium manufacture Product Process, feature:
1, it takes crome metal, evanohm, chrome ore, chromium compound to be dissolved in acid, extraordinary substance is added and removes impurity, then to pure Chromium solution carries out quantitative detecting analysis, measures the gross mass of chromium and the extraction of chromium, chromium series of products are made.
(1), by one of crome metal, evanohm, chrome ore, chromium compound or it is a variety of it is levigate be 50 mesh or more, be added acid Dissolution, acid is sulfuric acid, hydrochloric acid, phosphoric acid, one or more in nitric acid, is heated to 20 DEG C -120 DEG C, be completely dissolved chromium for chromium from Son, and hydrogen is recycled, hydrogen is made.
(2), solution is filtered, removes impurity, obtains Cr3+Solution.
(3)、Cr3+Alkali, oxidant, potassium ferrocyanide, potassium ferricyanide, oxalic acid, γ-oxyquinoline, nitrosobenzene hydroxyl are added in solution One of amine, Sodium Dimethyldithiocarbamate are a variety of, heating stirring, react completely, remove impurity, filtering, and filtrate is made in filter cake clean dry For Cr3+Solution.
(4), by part Cr made from step 33+In solution, ammonium hydroxide, urea, alkali, carbonate, one in bicarbonate is added Kind is a variety of, makes Cr3+It is precipitated as chromium hydroxide completely, chromium hydroxide is cleaned, is dry, chromium hydroxide is made, then will be obtained Chromium hydroxide is scaled the practical gross mass of chromium and the actual content of chromium.
(5), part chromium hydroxide made from step (4) is calcined, completely generation chrome green, then by chrome green In be passed through hydrogen, be made High Pure Chromium, obtain the practical gross mass and content of chromium.
(6), by part Ct made from step 33+Solution, addition oxidant complete oxidation are Cr6+, take a small amount of Cr6+Solution adds Enter iron ammonium sulfate titration and precision instrument analysis, then converts to obtain the practical gross mass of chromium and the actual content of chromium.
(7), by part Cr made from step 33+Solution, addition oxidant complete oxidation are Cr6+, take a small amount of Cr6+Solution, The titration of N- phenylanthranilic acid and precision instrument analysis is added, then converts to obtain the practical gross mass of chromium and the reality of chromium contains Amount.
(8), by part Cr made from step 33+Solution, addition oxidant complete oxidation are Cr6+, take a small amount of Cr6+Solution adds Enter diphenylcarbazide titration and precision instrument analysis, then converts to obtain the practical gross mass of chromium and the actual content of chromium.
(9), by part Cr made from step 2 or step 33+In solution, that pyridine precipitate C of γ-oxyquinoline r is added3+, mistake Filter, washing, clean, obtained that pyridine chromium of γ-oxyquinoline, then convert to obtain the gross mass of chromium and the actual content of chromium.
2, by Cr made from claim 1 step 33+Solution produces different products:
(1), by Ct3+Solution evaporation, crystallization, drying, produce product chromic salt, then produce inorganic chromium, Organic Chromium, sexavalence Chromic salts, chromic anhybride.
(2), by Cr3+Solution is put into electrolyser and is electrolysed, and cathode is put into Cr3+Solution and electrolysis auxiliary agent, anode are put into sulphur Acid, Cr3+Solution is powered, and keeps cathode, anode optimum current density, optimum voltage, best ion concentration in electrolyser, cathode High-purity metal chromium is made, chromic anhybride is made in anode.
(3), by Ct3+Solution and auxiliary agent are put into cathode, and anode is put into sulfuric acid, 2- methyl naphthalene, are powered, and keep yin in electrolytic cell Crome metal is made in pole, anode most preferably most current density, optimum voltage, best ion concentration, cathode, and anode obtains 2- methyl -4- Naphthoquinones, then sulfurous acid, alkali is added in 2- methyl -4- naphthoquinones, it further refines, vitamin K is made3。
(4), by Cr3+In solution, one of ammonium hydroxide, alkali, urea, carbonate, bicarbonate or a variety of is added, stirring is anti- It answers, is filtered, washed, dries, product chromium hydroxide is made.
1., by chromium hydroxide be put into incinerator through 900 DEG C -1400 DEG C calcining, be made product chrome green.
2., chromium hydroxide or chrome green be put into vacuum drying oven, 99.9%-99.999% hydrogen is passed through, through 900 High-purity metal chromium is made in DEG C -1600 DEG C of high temperature reductions.
3., chrome green is put into high temperature furnace, high purity aluminum powder and auxiliary agent is added, high-purity metal chromium is made.
4., chrome green is put into fusion electrolysis grain and is electrolysed, and suitable auxiliary agents are added, high pure metal is made in cathode Chromium.
5., chromium hydroxide is produced to inorganic chromium, Organic Chromium, sexavalence chromic salts, chromic anhybride.
(5), it will be passed through hydrogen in chromium chloride, heat 800 DEG C -1400 DEG C, High Pure Chromium is made.
(6), high-purity metal chromium is made through high-temperature calcination in iodate chromium obtained or chromium chloride.
(7), by 700 DEG C -1000 DEG C of chromium sulfate high-temperature calcination obtained, chrome green is made, then by chrome green It is put into vacuum drying oven, is passed through high-purity hydrogen, through 900 DEG C of -1600 DEG C of high temperature reductions, High Pure Chromium is made.
Embodiment
Since crome metal has fusing point high, property is stablized, and oxidation and corrosion is widely used in aerospace, weapon The fields such as equipment, ship naval vessels, aircraft, automobile, electronic information technology, daily necessities, biological medicine, cosmetics.
It due to the detection method of original chromium, is analyzed chromium and conventional element, obtains in many metallic ion mixed liquors The content of chromium out, whether High Pure Chromium or evanohm in fact, wherein being that can not survey in existing method all containing there are many impurity It fixes.The extracting method of detection method and chromium to chromium, it is necessary to have a kind of more scientific, accurate, easily and efficiently detection side Method and extraction process keep the purposes of chromium more extensive.We use existing High Pure Chromium Cr99.5%, Cr99.8%, Cr99.9% The new method and new technology that we invent has made further detection, testing result discovery: has contained a large amount of heavy metal in chromium, be Yellow color, impurity content reach 16%-20%, and causing the content of chromium is only 80% or so.
Embodiment 1,
Take the crome metal 99.8% of domestic certain enterprise's fusion electrolysis production, index value are as follows:
(%) Cr:99.8, Si:0.015, S:0.002, P:0.002, AT:0.013, C:0.01, Bi:0.0003
1, it weighs chromium sample 50g to be put into beaker, weighs sulfuric acid 130g, beaker is placed on electric furnace, 30g water, side is added It heats side and sulfuric acid is added dropwise, be completely dissolved chromium.Filtering removes impurity, obtains filtrate.
2, alkali, oxidant, potassium ferrocyanide, potassium ferricyanide, nitrosobenzene azanol are added in filtrate, stirs reaction completely, multiple mistake Filter, edulcoration, make Chrome-free solion in filter residue, filter residue and drying, weigh as 42.8g, high-purity Cr is made3+Filtrate.
3、Cr3+Ammonium hydroxide is added in filtrate, makes Cr in solution3+It is precipitated as chromium hydroxide completely, is filtered, washed, completely removes Wherein dirt solution, it is dry, Cr (OH) 32H is made2O, weighing and conversing the quality of chromium for 108.26g is 40.5g, chromium Actual content are as follows: 40.5/50=81%.
Example 2,
Take the High Pure Chromium Cr99.5% of domestic certain enterprise electrolysis chromic ammonium alum production.
1, crome metal 50g is weighed, chromium powder is put into 500ml beaker, is placed on electric furnace by sulfuric acid 130g, and 30ml is added Water, the side Bian Jiare acid adding, is completely dissolved chromium powder, and filtering removes impurity, and Cr is made3+Solution.
2, γ-oxyquinoline, nitrosobenzene azanol are added in filtrate, is stirred to react, filters, removes filter residue, repeatedly washs, Make in filter residue without Cr3+High-purity Cr is made in solution3+Solution 350ml.
3, high-purity Cr is taken3+Ammonium persulfate is added by Cr in solution in solution 50ml3+Complete oxidation is Cr6+。
4, with diphenyl carbazide titration solution Cr6+, then atom colorimetric analysis is used, conversing 50ml chromium is 6.1g.Step 3 Cr is made3+Solution is 350ml, and calculating total chromium is 42.7g, and the actual content of chromium is 42.7/50=85.4%.
5, high-purity Cr made from step 2 is taken3+Solution 200ml, is added ammonium hydroxide, and chromium hydroxide is made in filtering, Xian Di, drying 81.52g.6, chromium hydroxide is put into high temperature furnace and is calcined, chrome green 35.66g is made.
7, chrome green is put into mini type high temperature vacuum drying oven, is passed through 99.9% hydrogen, high-purity metal chromium is made 24.398g purity Cr99.995%.
8, by residue 100mlCr made from step 23+Solution is diluted to 30mg/L, and saccharomyces cerevisiae Cordycepps is put into fermentor In, it ferments under the conditions of 26 DEG C -37 DEG C of temperature, when weight in wet base reaches 30g/L or more, stream plus Cr3+Solution, fermentation to weight in wet base reach Stop when 108-160g/L, by centrifuge separation, cleaning, drying, high chromium yeast chromium is made, organic chromium concn reaches 240ug/L.

Claims (2)

1. a kind of Fast And Accurate Determination method of chromium and the extraction of chromium manufacture Product Process, feature:
It takes crome metal, evanohm, chrome ore, chromium compound to be dissolved in acid, extraordinary substance is added and removes impurity, then is molten to pure chromium Liquid carries out quantitative detecting analysis, measures the gross mass of chromium and the extraction of chromium, chromium series of products are made.
(1), by one of crome metal, evanohm, chrome ore, chromium compound or it is a variety of it is levigate be 50 mesh or more, be added acid dissolution, Acid is sulfuric acid, hydrochloric acid, phosphoric acid, one or more in nitric acid, is heated to 20 DEG C -120 DEG C, is completely dissolved chromium for chromium ion, and Hydrogen is recycled, hydrogen is made.
(2), solution is filtered, removes impurity, obtains Cr3+Solution.
(3)、Cr3+Alkali, oxidant, potassium ferrocyanide, potassium ferricyanide, oxalic acid, γ-oxyquinoline, nitrosobenzene azanol, good fortune are added in solution One of U.S. sodium is a variety of, heating stirring, reacts completely, removes impurity, filtering, filter cake clean dry, it is Cr that filtrate, which is made,3+ Solution.
(4), by part Cr made from step 33+In solution, be added ammonium hydroxide, urea, alkali, carbonate, one of bicarbonate or It is a variety of, make Cr3+It is precipitated as chromium hydroxide completely, chromium hydroxide is cleaned, is dry, is made chromium hydroxide, then by hydrogen-oxygen obtained Change chromium and is scaled the practical gross mass of chromium and the actual content of chromium.
(5), part chromium hydroxide made from step (4) is calcined, completely generation chrome green, then will led in chrome green Enter hydrogen, High Pure Chromium is made, obtains the practical gross mass and content of chromium.
(6) by part Cr made from step 33+Solution, addition oxidant complete oxidation are Cr6+, take a small amount of Cr6+Sulphur is added in solution Sour ferrous ammonium titration and precision instrument analysis, then convert to obtain the practical gross mass of chromium and the actual content of chromium.
(7), by part Cr made from step 33+Solution, addition oxidant complete oxidation are Cr6+, take a small amount of Cr6+N is added in solution The titration of one phenylanthranilic acid and precision instrument analysis, then convert to obtain the practical gross mass of chromium and the actual content of chromium.
(8), by part Cr made from step 33+Solution, addition oxidant complete oxidation are Cr6+, take a small amount of Cr6+Solution is added two Dinitrodiphenyl carbazide titration and precision instrument analysis, then convert to obtain the practical gross mass of chromium and the actual content of chromium.
(9), by part Cr made from step 2 or step 33+In solution, that pyridine precipitate C of γ-oxyquinoline r is added3+, filter, wash It washs, completely, that pyridine chromium of γ-oxyquinoline is made, then convert to obtain the gross mass of chromium and the actual content of chromium.
2. by Cr made from claim 1 step 33+Solution produces different products:
(1), by Cr3+Solution evaporation, crystallization, drying, produce product chromic salt, then produce inorganic chromium, Organic Chromium, Cr VI Salt, chromic anhybride.
(2), by Cr3+Solution is put into electrolyser and is electrolysed, and cathode is put into Cr3+Solution and electrolysis auxiliary agent, anode are put into sulfuric acid, Cr3+ Solution is powered, and keeps cathode, anode optimum current density, optimum voltage, best ion concentration in electrolyser, and height is made in cathode Chromic anhybride is made in pure metal chromium, anode.
(3), by Cr3+Solution and auxiliary agent are put into cathode, and anode is put into sulfuric acid, 2- methyl naphthalene, be powered, keep electrolytic cell in cathode, Crome metal is made in anode most preferably most current density, optimum voltage, best ion concentration, cathode, and anode obtains 2- methyl -4- naphthalene Quinone, then sulfurous acid, alkali is added in 2- methyl -4- naphthoquinones, it further refines, vitamin K is made3。
(4), by Cr3+In solution, one of ammonium hydroxide, alkali, urea, carbonate, bicarbonate or a variety of is added, is stirred to react, It is filtered, washed, dries, product chromium hydroxide is made.
1., by chromium hydroxide be put into incinerator through 900 DEG C -1400 DEG C calcining, be made product chrome green.
2., chromium hydroxide or chrome green be put into vacuum drying oven, be passed through 99.9%-99.999% hydrogen, through 900 DEG C- High-purity metal chromium is made in 1600 DEG C of high temperature reductions.
3., chrome green is put into high temperature furnace, high purity aluminum powder and auxiliary agent is added, high-purity metal chromium is made.
4., chrome green is put into fusion electrolysis grain and is electrolysed, and suitable auxiliary agents are added, high-purity metal chromium is made in cathode.
5., chromium hydroxide is produced to inorganic chromium, Organic Chromium, sexavalence chromic salts, chromic anhybride.
(5), it will be passed through hydrogen in chromium chloride, heat 800 DEG C -1400 DEG C, High Pure Chromium is made.
(6), high-purity metal chromium is made through high-temperature calcination in iodate chromium obtained or chromium chloride.
(7), by 700 DEG C -1000 DEG C of chromium sulfate high-temperature calcination obtained, chrome green is made, then chrome green is put into In vacuum drying oven, it is passed through high-purity hydrogen, through 900 DEG C of -1600 DEG C of high temperature reductions, High Pure Chromium is made.
CN201810030324.8A 2018-01-03 2018-01-03 The Fast And Accurate Determination method of chromium and the extraction of chromium manufacture Product Process Pending CN109988914A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114444986A (en) * 2022-04-11 2022-05-06 成都数之联科技股份有限公司 Product analysis method, system, device and medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101289227A (en) * 2008-06-18 2008-10-22 代汉松 Process for recovering chromium from waste liquid of vitamin K3 production
CN104743510A (en) * 2013-12-29 2015-07-01 唐翔 Carbon ferrochrome liquid phase method for preparing new energy battery raw material and new energy source hydrogen process
CN106148988A (en) * 2015-03-30 2016-11-23 唐翔 The molten electrolysis of ferrochrome acid produces chromic anhybride technique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101289227A (en) * 2008-06-18 2008-10-22 代汉松 Process for recovering chromium from waste liquid of vitamin K3 production
CN104743510A (en) * 2013-12-29 2015-07-01 唐翔 Carbon ferrochrome liquid phase method for preparing new energy battery raw material and new energy source hydrogen process
CN106148988A (en) * 2015-03-30 2016-11-23 唐翔 The molten electrolysis of ferrochrome acid produces chromic anhybride technique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114444986A (en) * 2022-04-11 2022-05-06 成都数之联科技股份有限公司 Product analysis method, system, device and medium
CN114444986B (en) * 2022-04-11 2022-06-03 成都数之联科技股份有限公司 Product analysis method, system, device and medium

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