CN103569971B - Boiling roaster nickel-molybdenum ore prepares the method for sulfuric acid - Google Patents
Boiling roaster nickel-molybdenum ore prepares the method for sulfuric acid Download PDFInfo
- Publication number
- CN103569971B CN103569971B CN201310547222.0A CN201310547222A CN103569971B CN 103569971 B CN103569971 B CN 103569971B CN 201310547222 A CN201310547222 A CN 201310547222A CN 103569971 B CN103569971 B CN 103569971B
- Authority
- CN
- China
- Prior art keywords
- nickel
- sulfuric acid
- molybdenum ore
- fluidizing furnace
- mixture
- 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.)
- Active
Links
Abstract
The present invention relates to a kind of method that boiling roaster nickel-molybdenum ore prepares sulfuric acid, belong to the technical field preparing sulfuric acid.Its method comprises the following steps: by nickel-molybdenum ore and sulfide containing material mixing, to mixture, the weight content of S is 20% ~ 35%, the weight content of water is 5% ~ 15%, is then placed in fluidizing furnace by this mixture, passes into oxygen-enriched air roasting, to obtain final product.The invention has the beneficial effects as follows: can production cost be reduced, prepare the industrial sulphuric acid product meeting GB/T1534-2001 national standard.
Description
Technical field
The invention belongs to the technical field preparing sulfuric acid, be specifically related to a kind of method that boiling roaster nickel-molybdenum ore prepares sulfuric acid.
Background technology
The preparation method of industrial sulphuric acid, because adopting the difference of raw material, is mainly divided into metallurgical off-gas acid-making, pyrite-based sulfuric acid production, acid production with sulphur and phosphogypsum relieving haperacidity etc.
1, metallurgical off-gas acid-making
Along with developing rapidly of China's non-ferrous metals industry, the improvement of flue gas during smelting, mainly utilizes SO wherein
2produce sulfuric acid, the non-ferrous metal major parts such as copper, lead, zinc, nickel, gold, cobalt, molybdenum, chromium are sulphide oress, in smelting process, because sulphide ores is under pyroreaction, release containing SO
2flue gas, its flue gas composition is different with the characteristic of nonferrous metals ore, composition and smelting technology, its SO
2volumetric concentration, 0.05% ~ 25.0%, is considered from environment protection and the utilization of resources, the SO in this flue gas
2the overwhelming majority all must utilize and reclaim, and its retrieving arrangement is exactly supporting byproduct engineering.Discharge the SO in flue gas
2the overwhelming majority adopts ordinary method to prepare industrial sulphuric acid, for SO
2the flue gas application non-stationary transformantion technique that content is lower and WSA technique are made, for SO
2the flue gas LuReeTM technique that content is higher is made.For SO
2content height adopts ordinary method, and equipment is ripe, and production cost is lower, and for SO
2content is low is used in unstable state and WSA processing method, just there is use apparatus expensive, the shortcoming that production cost is high.
2, pyrite-based sulfuric acid production
Sulfurous iron ore is China's homegrown resource, China occupies 72.70% of global total amount, pyrite-based sulfuric acid production serves part not enough outside supplementary metallurgical off-gas acid-making (this is the acid that environmental requirement must be produced) and phosphogypsum relieving haperacidity (making full use of world's phosphogypsum resource), plays Balanceregulation.China is through oneself's research and development of decades and introduction abroad, and its Technology, equipment level and sulphuric acid plant are close to foreign level.After 2000, bargh of China production cost progressively raises, and in addition after financial crisis in 2007, industrial sulphuric acid price goes way down, its mining production enterprise progressively atrophy, and economic benefit declines.
3, acid production with sulphur
Before the nineties in 20th century, Sulfur price is low, the whole world mostly adopts acid production with sulphur, large large impact pyrite-based sulfuric acid production enterprise, after 2002, Sulfur price rises suddenly and sharply, industrial sulphuric acid enterprise cost is increased, benefit degradation, its production cost is more much higher than pyrite-based sulfuric acid production on the contrary, and its processing requirement equipment is on the contrary very ripe.
4, nickel-molybdenum ore relieving haperacidity
China's zunyi, guizhou and Zhangjiajie, Hunan Yun hide abundant nickel-molybdenum ore resource, but molybdenum nickel grade is very not high, high containing C, complicated component, belong to difficult choosing, difficult smelting mineral, and the technique of its processing nickel-molybdenum ore is divided into pyrogenic process and wet processing.
A, thermal process: domestic traditional technology is that direct-reduction roasting method produces dynamax; Or with oxidizing roasting, after sodium-salt calcination, the serial molybdenum products such as molybdic acid, molybdenum oxide or ammonium molybdate are produced in water logging.But the SO that these two kinds of technological processs produce
2flue gas, environmental pollution is large, and product specification is low, and S, C in nickel-molybdenum ore are not utilized, and due to the existence of C, also there is the ropy shortcoming of the vitriol oil of preparation.
B, wet processing: adopt alkaline oxygenated reagent N aCLO+NaOH Direct Resolution, or decompose with nitric acid, the series product such as ammonium molybdate are produced again from leach liquor, its production cost is high, subsequent handling process is numerous and diverse, S, C are not wherein utilized yet, and due to the existence of C, also there is the ropy shortcoming of the vitriol oil of preparation.
Summary of the invention
The object of this invention is to provide a kind of method that boiling roaster nickel-molybdenum ore prepares sulfuric acid, tooling cost is low, and gained sulfuric acid is superior in quality.
The technical solution used in the present invention is a kind of method that boiling roaster nickel-molybdenum ore prepares sulfuric acid, the method comprises the following steps: by nickel-molybdenum ore and sulfide containing material mixing, to mixture, the weight content of S is 20% ~ 35%, the weight content of water is 5% ~ 15%, then this mixture is placed in fluidizing furnace, pass into oxygen-enriched air roasting, to obtain final product.
As preferably, the blending ratio of described nickel-molybdenum ore and sulfide containing material is 1:0 ~ 5.
As preferably, described sulfide containing material is selected from the one in containing sulfur minerals, sulphur or sulfurous gas, or their mixture.
As preferably, described oxygen enrichment is oxygen level is 20% ~ 40%(volume ratio) air.
As preferably, when roasting, the fluidized layer temperature in described fluidizing furnace is 650 DEG C ~ 900 DEG C, and the pressure bottom fluidizing furnace is 900mmHg ~ 1300mmHg, and the temperature out of fluidizing furnace is 450 DEG C ~ 660 DEG C.
In the present invention, the C content of nickel-molybdenum ore is about 10%, and its combustion heating amount every mole of C is equivalent to 3 moles of S thermal values.By controlling S content and the moisture content of roasting material, passing into the common roasting of oxygen enrichment, not only make full use of S and C in mineral, to also overcome in raw ore C to the impact of acid manufacturing processes, its sulfuric acid preparing gained meets national standard completely, after roasting gained calcining in residual sulphur weight ratio very low (lower than 4%), for the production of follow-up nickel, molybdenum product provides good condition.
In the present invention, nickel-molybdenum ore is also called metallic nickel molybdenum, carbon sulphur molybdenum ore, Jiao Liukuang and bone coal.
Beneficial effect of the present invention is: (1) utilizes preparation method's gained sulfuric acid quality of the present invention to meet national standard.(2) by passing into oxygen-enriched air roasting, adopt nickel-molybdenum ore and sulfide containing material used in combination, the sulphur in raw ore and carbon participation reaction can be made full use of, overcome the technical barrier that can not utilize sulphur and carbon in prior art, significantly reduce production cost, solve the pollution to environment, there is good economic benefit and social benefit.(3) tail gas utilizing this preparation method to discharge, meets national environmental protection comprehensive discharge standard.
Embodiment
For making those skilled in the art understand production technique of the present invention and technique effect in detail, introduce application of the present invention and technique effect further with concrete production instance below.
Embodiment one:
Get 100kg nickel-molybdenum ore and the mixing of 300kg containing sulfur minerals, after testing, in mixture, the weight content of S is 28%, the weight content of water is 10%, then this mixture is placed in fluidized bed roasting in fluidizing furnace, in fluidizing furnace, pass into oxygen level is 30%(volume ratio) air jointly carry out roasting, must containing the furnace gas of sulfur dioxide gas.This furnace gas, through dedusting, after purification, adopts contact process, obtains sulfuric acid.
Wherein, during roasting, the fluidized layer temperature in fluidizing furnace is 750 DEG C, and the pressure bottom fluidizing furnace is 1000mmHg, and the temperature out of fluidizing furnace is 500 DEG C.
After testing, in furnace gas, the concentration of sulfurous gas is 8%.Sulfuric acid meets national standard.
Embodiment two:
Get 100kg nickel-molybdenum ore and the mixing of 10kg sulphur, after testing, in mixture, the weight content of S is 27%, the weight content of water is 8%, then this mixture is placed in fluidized bed roasting in fluidizing furnace, in fluidizing furnace, pass into oxygen level is 20%(volume ratio) air jointly carry out roasting, must containing the furnace gas of sulfur dioxide gas.This furnace gas, through dedusting, after purification, adopts contact process, obtains sulfuric acid.
Wherein, during roasting, the fluidized layer temperature in fluidizing furnace is 650 DEG C, and the pressure bottom fluidizing furnace is 1300mmHg, and the temperature out of fluidizing furnace is 450 DEG C.
After testing, in furnace gas, the concentration of sulfurous gas is 6.8%.Sulfuric acid meets national standard.
Embodiment three:
Get the mixing of 100kg nickel-molybdenum ore, after testing, in material, the weight content of S is 20%, the weight content of water is 5%, then this mixture is placed in fluidized bed roasting in fluidizing furnace, in fluidizing furnace, pass into oxygen level is 40%(volume ratio) air jointly carry out roasting, must containing the furnace gas of sulfur dioxide gas.This furnace gas, through dedusting, after purification, adopts contact process, obtains sulfuric acid.
Wherein, during roasting, the fluidized layer temperature in fluidizing furnace is 900 DEG C, and the pressure bottom fluidizing furnace is 900mmHg, and the temperature out of fluidizing furnace is 660 DEG C.
After testing, in furnace gas, the concentration of sulfurous gas is 5.8%.Sulfuric acid meets National Industrial sulfuric acid primary standard.
Embodiment four:
Get the mixing of 100kg nickel-molybdenum ore, 20kg containing sulfur minerals and 10kg sulphur, after testing, in mixture, the weight content of S is 26%, the weight content of water is 15%, then this mixture is placed in fluidized bed roasting in fluidizing furnace, in fluidizing furnace, pass into oxygen level is 35%(volume ratio) air jointly carry out roasting, must containing the furnace gas of sulfur dioxide gas.This furnace gas, through dedusting, after purification, adopts contact process, obtains sulfuric acid.
Wherein, during roasting, the fluidized layer temperature in fluidizing furnace is 800 DEG C, and the pressure bottom fluidizing furnace is 1100mmHg, and the temperature out of fluidizing furnace is 550 DEG C.
After testing, in furnace gas, the concentration of sulfurous gas is 6.4%.Sulfuric acid meets national standard.
Through test, in above-described embodiment, in furnace gas, the transformation efficiency of sulfur dioxide gas is greater than 98%, can effectively make Sulphur Dioxide be sulfuric acid.The concentration of its sulfuric acid is 93%-98%.
Finally it should be noted that, above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although with reference to above-described embodiment to invention has been detailed description, those skilled in the art are to be understood that, still can modify to the present invention or equivalent replacement, and not departing from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in right of the present invention.
Claims (4)
1. a boiling roaster nickel-molybdenum ore prepares the method for sulfuric acid, it is characterized in that: the method comprises the following steps: by nickel-molybdenum ore and sulfide containing material mixing, to mixture, the weight content of S is 20% ~ 35%, the weight content of water is 5% ~ 15%, then this mixture is placed in fluidizing furnace, pass into oxygen-enriched air roasting, to obtain final product;
The blending ratio of described nickel-molybdenum ore and sulfide containing material is 1:0 ~ 5;
The air of described oxygen enrichment to be oxygen level be 20% ~ 40% volume ratio.
2. boiling roaster nickel-molybdenum ore according to claim 1 prepares the method for sulfuric acid, it is characterized in that: described sulfide containing material is selected from the one in containing sulfur minerals or sulfurous gas, or their mixture.
3. boiling roaster nickel-molybdenum ore according to claim 2 prepares the method for sulfuric acid, it is characterized in that: described containing sulfur minerals is sulphur.
4. boiling roaster nickel-molybdenum ore according to claim 1 prepares the method for sulfuric acid, it is characterized in that: when roasting, fluidized layer temperature in described fluidizing furnace is 650 DEG C ~ 900 DEG C, pressure bottom fluidizing furnace is 900mmHg ~ 1300mmHg, and the temperature out of fluidizing furnace is 450 DEG C ~ 660 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310547222.0A CN103569971B (en) | 2013-11-06 | 2013-11-06 | Boiling roaster nickel-molybdenum ore prepares the method for sulfuric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310547222.0A CN103569971B (en) | 2013-11-06 | 2013-11-06 | Boiling roaster nickel-molybdenum ore prepares the method for sulfuric acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103569971A CN103569971A (en) | 2014-02-12 |
| CN103569971B true CN103569971B (en) | 2015-10-28 |
Family
ID=50042784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310547222.0A Active CN103569971B (en) | 2013-11-06 | 2013-11-06 | Boiling roaster nickel-molybdenum ore prepares the method for sulfuric acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103569971B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106834703B (en) * | 2017-03-30 | 2019-04-26 | 中南大学 | A kind of leaching method of waste lithium ion cell anode active material |
| CN110902656A (en) * | 2019-12-12 | 2020-03-24 | 南京乾盛化工科技有限公司 | Production method for preparing sulfuric acid from molybdenum concentrate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245409A (en) * | 2008-03-31 | 2008-08-20 | 昆明理工大学 | Method for producing iron ore concentrate with high arsenic ferro-sulphur ore concentrate |
| CN102199710A (en) * | 2011-05-06 | 2011-09-28 | 中南大学 | Method for extracting and separating nickel and molybdenum from nickel-molybdenum-containing coal gangue |
| CN102268538A (en) * | 2011-07-27 | 2011-12-07 | 中南大学 | Boiling furnace device used for roasting nickel-molybdenum concentrate and method for roasting nickel-molybdenum concentrate |
| CN103088210A (en) * | 2013-01-18 | 2013-05-08 | 中南大学 | Method for selectively leaching nickel and molybdenum from nickel-molybdenum ore |
-
2013
- 2013-11-06 CN CN201310547222.0A patent/CN103569971B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245409A (en) * | 2008-03-31 | 2008-08-20 | 昆明理工大学 | Method for producing iron ore concentrate with high arsenic ferro-sulphur ore concentrate |
| CN102199710A (en) * | 2011-05-06 | 2011-09-28 | 中南大学 | Method for extracting and separating nickel and molybdenum from nickel-molybdenum-containing coal gangue |
| CN102268538A (en) * | 2011-07-27 | 2011-12-07 | 中南大学 | Boiling furnace device used for roasting nickel-molybdenum concentrate and method for roasting nickel-molybdenum concentrate |
| CN103088210A (en) * | 2013-01-18 | 2013-05-08 | 中南大学 | Method for selectively leaching nickel and molybdenum from nickel-molybdenum ore |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103569971A (en) | 2014-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100582264C (en) | Method for extracting metallic nickel cobalt from irony nickel mine | |
| CN106676281B (en) | A kind of technique of Copper making liquid slag ore phase reconstruction Recovering Copper, iron | |
| CN103526024B (en) | Novel clean environment-friendly comprehensive recovery process for high-indium high-iron zinc concentrate | |
| CN1730684A (en) | Bessemer matte production method using nickel sulfide materials | |
| CN102181627B (en) | Method for treating primary low-grade high-phosphorus manganese ore by acid blending curing | |
| CN104278125B (en) | The method of a kind of iron bearing slag making material bath smelting melt reduction iron processed | |
| CN103993182B (en) | The comprehensive recovering process of secondary resource in a kind of iron vitriol slag | |
| CN102108438B (en) | Method for producing pellets from laterite-nickel ore | |
| CN109534476A (en) | A kind of method that copper ashes handles arsenic in nonferrous smelting waste acid | |
| CN104445431A (en) | Method for preparing high-purity iron oxide red from pyrites slag | |
| CN101748296A (en) | Method for extracting vanadium from stone coal | |
| CN104911372A (en) | Pre-treatment method for micro-disseminated type refractory primary gold ore | |
| CN103343242B (en) | Method for interactively roasting bismuth sulfide ore and pyrolusite to extract bismuth and co-produce manganese sulfate | |
| CN101215647B (en) | Roasting technique for extracting vanadium from stone coal vanadium ore | |
| CN106337135A (en) | Novel method for producing vanadium pentoxide through ammonium-free vanadium precipitation | |
| CN104232923B (en) | SO is reduced in a kind of Copper making process 3the method produced | |
| CN104294055A (en) | Method for extracting vanadium from vanadium slag | |
| CN105523588A (en) | Method for preparing high-purity iron oxide red | |
| CN103569971B (en) | Boiling roaster nickel-molybdenum ore prepares the method for sulfuric acid | |
| CN110846496A (en) | Sulfating roasting smelting method of sulfur-containing copper-cobalt concentrate | |
| CN104846189B (en) | Fluidized roasting separation method for siderite-containing mixed iron ore | |
| CN101701275A (en) | Method for preparing nickel iron by using rotary kiln for directly reducing nickel silicate ores | |
| CN101935755B (en) | Two-stage leaching method for vanadium in vanadium-containing ore | |
| CN105907949A (en) | Novel process for comprehensively recovering nickel, cobalt and iron from laterite-nickel ore through low-temperature acidification and acidolysis | |
| CN102321797A (en) | Method for extracting cobalt from vanadic titanomagnetite and preparing superfine cobalt powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |