CN105648211B - The method of magnesium chloride in high temperature and high pressure method leaching serpentine - Google Patents
The method of magnesium chloride in high temperature and high pressure method leaching serpentine Download PDFInfo
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- CN105648211B CN105648211B CN201510902488.1A CN201510902488A CN105648211B CN 105648211 B CN105648211 B CN 105648211B CN 201510902488 A CN201510902488 A CN 201510902488A CN 105648211 B CN105648211 B CN 105648211B
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- serpentine
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- leaching
- magnesium chloride
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- 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
Abstract
The method that the present invention relates to the use of serpentine resource, belong to the technical field that wet method extracts metallic compound from ore.The method that the present invention is different from magnesium metal in conventional Acid leaching serpentine is to take 100 ~ 200 DEG C of closed high-temperature and high-pressure conditions snake stone flour is reacted with concentrated hydrochloric acid with a kind of semi-solid state, solid-to-liquid ratio 1:1~3:1, leaching temperature is 100 ~ 200 DEG C, and pressure is 505 ~ 1010KPa, 2 ~ 8 hours reaction time.The reaction mass increased activity under high-temperature and high-pressure conditions, so that sour consumption is reduced in leaching process, reduce production cost；Reaction generation magnesium chloride is present in semi-solid state reaction mass, realizes that whole technique does not produce waste liquid and other pollutants completely, improves the value of exploiting and utilizing of serpentine.
Description
Technical field
The method that the present invention relates to the use of serpentine resource, belong to the technology neck that wet method extracts metallic compound from ore
Domain.
Background technology
China's serpentinite mineral resources very abundant, be mostly the serpentinite mineral deposit of ultrabasic rock type, have mineral deposit it is more,
The features such as scale is big, distribution is wide, quality condition is good.Its purposes is primarily useful for building and ornament materials and jade raw material；Utilize it
Resistance to elevated temperatures and make refractory material；It is used for chemical fertilizer, magnesia porcelain, flux for metallurgy using its crystal chemistry characteristic and physical and chemical performance
Raw material；Magnesia and porous silica etc. can also be produced.
Serpentine is the layer silicate mineral being combined by silicon-oxy tetrahedron and hydrogen magnesium octahedron, and its Physicochemical formula is
3MgO·2SiO2·2H2O, the composition being mingled with have CaO, Fe2O3、Al2O3, NiO etc., its various ore deposit of the serpentine ore of different sources
The content and physical property of thing composition are different from.Mainly have to the extracting method of metal oxide in serpentine ore at present following
It is several.
Mixed melting method：Serpentine power is mixed with some basic solvents, it is firm brilliant that it is destroyed under high-temperature fusion
Body structure, further by Ore Leaching.The step of this method is mainly：First step high-temperature fusion, by serpentine and basic solvent
Such as sodium carbonate, ammonium sulfate mixes by a certain percentage, decomposes serpentine in 900 DEG C or so high-temperature fusions；Second step fused mass
Acidolysis, silicon is set to form H by adding inorganic acid2SiO3Precipitation, other elements Mg2+、Fe3+、Ni2+Deng with chloride or sulfuric acid
Salt form exists in solution.
Miberal powder calcination method：Serpentine crystal structure is destroyed by way of calcining, promotes acid leaching efficiency, improves metal ion
Leaching rate.Steps of the method are：First step high-temperature calcination, by serpentine power high-temperature calcination at a temperature of 700 DEG C, make it de-
Water decomposition switchs to amorphous state, and the magnesium and silicon for crystallizing inside can dissociate, and form the free oxidation with elevated chemical activity
Magnesium and silica；Second step solution leaches, can be effectively from calcining snake with ammonium nitrate solution, ammonium chloride solution or ammonium sulfate
Magnesia is optionally leached in line stone.
Wet method acid immersion：The general principle that acidleach is followed the example of is heated to reflux at ambient pressure using strong acid such as hydrochloric acid, sulfuric acid, nitric acid
Acidification is carried out to serpentine ore, makes its decomposition.Acid non-soluble substance and acid-soluble material two parts can be divided into after acidifying.
Compared with simple wet method, although the serpentine through pyrometallurgical smelting has the characteristics that each components utilising rate is high,
It is big to there is energy consumption, the features such as raw materials consumption such as required soda acid is big, and waste water and gas yield is big, although wet method acid immersion is preferably gram
The shortcomings that having taken pyrogenic process, have the characteristics that equipment investment is less, energy consumption is relatively low, raw materials consumption is less, but this method is mostly deposited
Metal ion leaching rate is high, acid-leaching reaction speed is slower, free sulphuric acid concentration is higher in leachate, makes leaching, filtering
The problems such as processing apparatus corrosion is more serious, and caused acidleach liquid measure disaster is handled.
The content of the invention
For the technique deficiency of existing serpentine comprehensive utilization, sour consumption is big in wet processing, and leaching is difficult and acid
Leach the intractable problem of waste liquid and cause serpentine resource exploitation to realize industrialized production so far.For the acid of routine
Leaching method shortcoming, concentrated hydrochloric acid under high-temperature and high-pressure conditions is taken to leach the optimization that serpentine power realizes leaching technology.
The method of magnesium chloride in high temperature and high pressure method leaching serpentine, it is characterised in that there is following technical process and step
Suddenly：
A) serpentine ore is ground into powdered granule of the grain graininess less than 100 mesh；
B) powdered granule of above-mentioned gained is placed in autoclave, with 1:1~3:1 solid-liquid mass ratio adds concentration matter
The concentrated hydrochloric acid that fraction is 37% is measured, semi-solid state is presented in mixed reaction mass；
C) reactor is heated, temperature control makes reaction be carried out under high-temperature and high-pressure conditions at 100 ~ 200 DEG C, and pressure is
505 ~ 1010KPa, in 2 ~ 8 hours reaction time, finally give and be present in magnesium chloride in semi-solid state reactant.
The inventive method uses 100 ~ 200 DEG C of closed high-temperature high-voltage reaction condition, and reaction mass activity and solubility increase
By force, so as to reduce sour consumption on the premise of high leaching rate is ensured, the production cost that magnesium is extracted from serpentine ore is reduced
And leaching time, improve the comprehensive utilization ratio of serpentine ore.And react and carried out in the state of a kind of semisolid, reacted
Full afterchlorinate magnesium is present in the reactant of semi-solid state, neither produces substantial amounts of acid leaching solution and causes secondary pollution, again
In the absence of during the extracting metals magnesium from magnesium chloride because the too high problem of acidity influences follow-up processing.
Embodiment
After now embodiments of the invention are described in.
Embodiment 1
The technical process and step of the present embodiment are described below：
The serpentine power of serpentine gained after attrition grinding working process of serpentinite ore deposit will be picked up from, crosses 100 mesh sieves,
Serpentine power is mixed in autoclave with concentrated hydrochloric acid and heated, solid-liquid weight ratio is 2:1, temperature control is 100 DEG C, this
When closed reactor in pressure can reach 505KPa, the reaction time is 5 hours.Through test analysis after reaction completely, react
The leaching rate of magnesium existing in the form of magnesium chloride is 47.2% in serpentine after complete.
Embodiment 2
The serpentine power of serpentine gained after attrition grinding working process of serpentinite ore deposit will be picked up from, crosses 100 mesh sieves,
Serpentine power is mixed in autoclave with concentrated hydrochloric acid and heated, solid-liquid weight ratio is 1:1, temperature control is 200 DEG C, this
When closed reactor in pressure can reach 1010KPa, the reaction time is 2 hours.Through test analysis after reaction completely, react
The leaching rate of magnesium existing in the form of magnesium chloride is 50.16% in serpentine after complete.
Embodiment 3
The serpentine power of serpentine gained after attrition grinding working process of serpentinite ore deposit will be picked up from, crosses 100 mesh sieves,
Serpentine power is mixed in autoclave with concentrated hydrochloric acid and heated, solid-liquid weight ratio is 2:1, temperature control is 200 DEG C, this
When closed reactor in pressure can reach 1010KPa, the reaction time is 2 hours.Through test analysis after reaction completely, react
The leaching of magnesium existing in the form of magnesium chloride in complete rear serpentine.
Claims (1)
1. a kind of method of magnesium chloride in high temperature and high pressure method leaching serpentine, it is characterised in that there is following technical process and step
Suddenly：
A) serpentine ore is ground into powdered granule of the grain graininess less than 100 mesh；
B) powdered granule of above-mentioned gained is placed in autoclave, with 1:1~3:1 solid-liquid mass ratio addition concentration quality point
Number is 37% concentrated hydrochloric acid, and semi-solid state is presented in mixed reaction mass；
C) reactor is heated, temperature control makes reaction be carried out under high-temperature and high-pressure conditions at 100 ~ 200 DEG C, pressure be 505 ~
1010KPa, in 2 ~ 8 hours reaction time, finally give and be present in magnesium chloride in semi-solid state reactant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510902488.1A CN105648211B (en) | 2015-12-09 | 2015-12-09 | The method of magnesium chloride in high temperature and high pressure method leaching serpentine |
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|---|---|---|---|
| CN201510902488.1A CN105648211B (en) | 2015-12-09 | 2015-12-09 | The method of magnesium chloride in high temperature and high pressure method leaching serpentine |
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| Publication Number | Publication Date |
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| CN105648211A CN105648211A (en) | 2016-06-08 |
| CN105648211B true CN105648211B (en) | 2017-12-22 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357462C (en) * | 2006-03-30 | 2007-12-26 | 上海大学 | Method for comprehensively utilizing serpentine resource |
| CN100383041C (en) * | 2006-09-01 | 2008-04-23 | 上海大学 | Method of preparing nanometer SiO2 from ophiolite |
| CN101016581A (en) * | 2006-12-20 | 2007-08-15 | 福建省顺昌金紫矿业有限公司 | Method of synthetically and highly effectively reclaiming nickel and magnesium resource from nickel-containing serpentine |
| CN101338376A (en) * | 2008-08-15 | 2009-01-07 | 中南大学 | Process for comprehensively developing and utilizing nickel, cobalt, iron and magnesium from laterite-nickel ore |
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