CN106809843B - A kind of method of lateritic nickel ore acidleach silicon slag production diatomite - Google Patents
A kind of method of lateritic nickel ore acidleach silicon slag production diatomite Download PDFInfo
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- CN106809843B CN106809843B CN201611205026.5A CN201611205026A CN106809843B CN 106809843 B CN106809843 B CN 106809843B CN 201611205026 A CN201611205026 A CN 201611205026A CN 106809843 B CN106809843 B CN 106809843B
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- diatomite
- silicon slag
- acid
- nickel ore
- lateritic nickel
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
- C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
- C01B33/40—Clays
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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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0407—Leaching processes
- C22B23/0415—Leaching processes with acids or salt solutions except ammonium salts solutions
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- Organic Chemistry (AREA)
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- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Silicon Compounds (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of method of lateritic nickel ore acidleach silicon slag production diatomite, the problem of this method is for lateritic nickel ore acidleach silicon slag Resource analysis, a kind of method of resource of simplicity is provided, waste residue passes through the processes such as grinding, pickling, drying, it can use the production of waste residue low cost and meet the diatomite of national standard, while being conducive to improve the yield of smelting nickel system nickel.The invention has the advantages that this method is injected capital into less, reliable product quality, belongs to process for cleanly preparing, there is significant economic benefit and social benefit.
Description
Technical field
The present invention relates to a kind of methods of lateritic nickel ore acidleach silicon slag production diatomite, belong to resource and environment filed.
Background technique
Laterite nickel main component is Ni, SiO2, MgO, Fe2O3, Al2O3, CaO etc., and wherein Si content is generally 3-35%,
When wet process smelting nickel, sulfuric acid (or hydrochloric acid) acidleach is commonly used, the main component of acid-soaked waste residue is SiO2, and content is up to 70-90%, together
The ingredients such as Shi Hanyou a small amount of Mg, Al and Ca, this part substantially all as waste residue stack, occupy large area soil, expend it is huge and
And pollution environment.The enhancing of requirement raising and people's environmental consciousness recently as country to clean manufacturing, both at home and abroad about
Every regulation of waste processing and regeneration is gradually implemented, and requires also higher and higher, Ye Nie enterprise waste residue to treatment of wastes produced
Disposal of resources is imperative.The utilization of silicon resource in waste residue, can not only reduce waste residue disposal costs, but also can produce new
Benefit meets the theory and clean manufacturing requirement of circular economy.
Diatomite is a kind of rock with biological structure, belongs to one kind of clay mineral, by the remains group of ancient times diatom
At chemical component is mainly SiO2, also containing a small amount of Al2O3, CaO, MgO etc., in addition also contains a small amount of organic impurities.Diatom
Diatom content is more in soil, and impurity is fewer, then color is whiter, and matter is lighter, dredges bulk density generally at 0.4-0.9 grams/cube
Between centimetre, true specific gravity is generally at 2.2 grams/cc or so.Since diatom body has numerous shell holes, make diatomite
Has Porous construction, the porosity of diatomite reaches 90-92%, and water imbibition is strong.Diatomite in acid (such as HCl, HSO4,
In HNO3) it is insoluble, but it is dissolved in HF and KOH.The purposes of diatomite is very extensive, is related to water process, chemical industry, building materials, petrochemical industry, doctor
The industries such as medicine, metallurgy, rubber, paint, coating, cosmetics, machinery, the energy.
In the prior art, diatomite processing mainly removes the wherein impurity such as silt particle, clast and iron, aluminium, keeps diatom rich
Collection.Gravity ore dressing method is generally used, gravity separation can be divided into dry type and two kinds of wet type, and dry-type separation is using deaerator
Gangue is removed, or organic matter, volatile matter and moisture are removed using spin-drier, this sorting mode is mainly used for Gao Pin
Position ore；Wet split removes biggish gangue in ore using hydrocyclone etc., is mainly used for poor value.Silicon
The purification of diatomaceous earth is added acid that is, into ore pulp and assistant medicament removes the impurity such as iron, aluminium, processing stream frequently with chemical mineral processing method
Cheng Tongchang are as follows: raw ore → primary grinding and drying → secondary grinding and drying → pre- classification → cyclone separation → powder product
(can be used as final products) → calcined by rotary kiln (or adding fluxing agent calcining) → ore grinding cooling → sorting classifying → filler grade helps
Filtering agent product.
Lateritic nickel ore acid-soaked waste residue, ingredient is close with diatomite main component, and the process of generation also passes through crushing, acidleach
Etc. processes, critical process is identical as diatomite, and silicon is also more hollow structures by acidleach, and activity is high；But due to wet process smelting nickel
The porosity of silicon is not specially required, also not to the processing of impurity specific aim, the performance of diatomite is not achieved in this part waste residue；
During wet process smelting nickel or silicon slag is modified using reasonable process, reaches diatomite standard, can produce huge
Economic benefit and social benefit are the great innovations of smelting nickel industry.
Summary of the invention
The purpose of the present invention is a kind of side of lateritic nickel ore acidleach silicon slag production diatomite there are problem, is provided for above-mentioned
Method, this method meet the diatomite of national standard using the production of waste residue low cost, while being conducive to improve the yield of smelting nickel system nickel, should
Method inject capital into less, reliable product quality, belong to process for cleanly preparing, there is huge economic benefit and social benefit.
Technical solution of the present invention:
A kind of method of lateritic nickel ore acidleach silicon slag production diatomite, steps are as follows:
1) water or acid solution is added in lateritic nickel ore acidleach silicon slag in mixing device, stirs evenly, obtains solidliquid mixture；
2) above-mentioned solidliquid mixture is transported to grinder, grinds silicon slag, until silicon slag solid grain size is that 1-30 is micro-
Rice；
3) solidliquid mixture after above-mentioned grinding is entered dewaterer to be separated by solid-liquid separation, and wash solids to pH be 3-
7；
4) it is dry to moisture < 2% that the solids of above-mentioned washing qualification is carried out to drying at 100-500 DEG C；
5) diatomite for meeting national standard is made through crushing packing in drying object；Acid solution and wash water recycling are impregnated for wet
Method smelting nickel acid leaching system complex acid uses or processing qualified discharge.
Acid solution is the mixing of one or more of sulfuric acid, hydrochloric acid, acetic acid, nitric acid arbitrary proportion in the step 1)
Liquid, the concentration of acid solution are 1-30wt%；Lateritic nickel ore acidleach silicon slag and water or the mass ratio of acid solution are 1:0.5-2.0.
Grinder is colloid mill, sand mill or ball mill in the step 2).
The beneficial effects of the present invention are:
1) present invention changes silicon slag partial size using the method for grinding, leaches impurity simultaneously using sour grinding aid, silicon can be improved
Slag porosity, while the elements such as iron in waste residue, nickel, magnesium are removed, so that diatomite quality is reached standard requirements.
2) acid solution and washing lotion are applied in the present invention, it is possible to reduce acid consumes when nickel minerals acidleach, while remaining nickel can be into waste residue
The dissolution of one step, improves the total recovery of system nickel, makes the reduction of wet process smelting nickel overall cost, remarkable in economical benefits, to wet process smelting nickel work
Skill has great innovative significance.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
It further illustrates, but is not construed as limiting the invention by the following examples.
Embodiment 1:
A kind of method of lateritic nickel ore acidleach silicon slag production diatomite, its step are as follows:
1) it is 6wt% sulphur that 1000Kg lateritic nickel ore acidleach silicon slag (butt calculating) is added in mixing device while concentration is added
Acid solution 1200kg, stirs evenly, and obtains solidliquid mixture；
2) above-mentioned solidliquid mixture is transported to colloid mill, grinds silicon slag, until to reach 5 micro- for silicon slag solid grain size
Rice；
3) solidliquid mixture that grinding is completed enters dewaterer and is separated by solid-liquid separation, and wash solids to pH be 5；
4) it is dry to moisture < 2% that the solids of above-mentioned washing qualification is carried out to drying at 200 DEG C；
5) diatomite for meeting national standard is made through crushing packing in drying object；Acid solution and wash water recycling are impregnated for wet
Method smelting nickel acid leaching system complex acid uses or processing qualified discharge.
Fig. 1 is process flow chart of the invention.
The diatomite 920kg, SiO that meet GB/T 24265-2014 quality requirement are obtained through detection2Content is
80.1wt%.
Embodiment 2:
A kind of method of lateritic nickel ore acidleach silicon slag production diatomite, its step are as follows:
1) 1000Kg lateritic nickel ore acidleach silicon slag (butt calculating) is added in mixing device while 16% sulfuric acid solution is added
1200kg is stirred evenly, and obtains solidliquid mixture；
2) by above-mentioned solidliquid mixture, it is transported to colloid mill, silicon slag is ground, until silicon slag solid grain size reaches d50
=3 microns.
3) solidliquid mixture that grinding is completed enters dewaterer and is separated by solid-liquid separation, and wash solids to pH be 6；
4) it is dry to moisture < 2% that the solids of above-mentioned washing qualification is carried out to drying at 300 DEG C；
5) diatomite for meeting national standard is made through crushing packing in drying object；Acid solution and wash water recycling are impregnated for wet
Method smelting nickel acid leaching system complex acid uses or processing qualified discharge.
The diatomite 850kg, SiO that meet GB/T 24265-2014 quality requirement are obtained through detection2Content is
90.5wt%.
5) grinding acid solution set is used for wet process smelting nickel acid leaching system.
Embodiment 3:
A kind of method of lateritic nickel ore acidleach silicon slag production diatomite, its step are as follows:
1) 1000Kg lateritic nickel ore acidleach silicon slag (butt calculating) is added in mixing device while 10% hydrochloric acid solution is added
1100kg is stirred evenly, and obtains solidliquid mixture；
2) by above-mentioned solidliquid mixture, it is transported to ball mill, silicon slag is ground, until silicon slag solid grain size reaches d50
=7 microns.
3) grinding complete solidliquid mixture enter dewaterer be separated by solid-liquid separation and wash solids to pH be 5；
4) it is dry to moisture < 2% that the solids of above-mentioned washing qualification is carried out to drying at 400 DEG C；
5) diatomite for meeting national standard is made through crushing packing in drying object；Acid solution and wash water recycling are impregnated for wet
Method smelting nickel acid leaching system complex acid uses or processing qualified discharge.
It is detected and obtains meeting diatomite 880kg, the SiO2 content of GB/T 24265-2014 quality requirement and be
83.0wt%.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (2)
1. a kind of method of lateritic nickel ore acidleach silicon slag production diatomite, it is characterised in that steps are as follows:
1) acid solution is added in lateritic nickel ore acidleach silicon slag in mixing device, stirs evenly, obtains solidliquid mixture；
2) above-mentioned solidliquid mixture is transported to grinder, grinds silicon slag, until silicon slag solid grain size is 1-30 microns；
3) solidliquid mixture after above-mentioned grinding is entered dewaterer to be separated by solid-liquid separation, and wash solids to pH be 3-7；
4) it is dry to moisture < 2% that the solids of above-mentioned washing qualification is carried out to drying at 100-500 DEG C；
5) diatomite for meeting national standard is made through crushing packing in drying object；It impregnates acid solution and wash water recycling is used for wet process smelting
Nickel acid leaching system complex acid uses or processing qualified discharge；
Acid solution is the mixed liquor of one or more of sulfuric acid, hydrochloric acid, acetic acid, nitric acid arbitrary proportion in the step 1),
The concentration of acid solution is 1-30wt%；Lateritic nickel ore acidleach silicon slag and the mass ratio of acid solution are 1:0.5-2.0.
2. the method for lateritic nickel ore acidleach silicon slag production diatomite according to claim 1, it is characterised in that: the step 2)
Middle grinder is colloid mill, sand mill or ball mill.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611205026.5A CN106809843B (en) | 2016-12-23 | 2016-12-23 | A kind of method of lateritic nickel ore acidleach silicon slag production diatomite |
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|---|---|---|---|
| CN201611205026.5A CN106809843B (en) | 2016-12-23 | 2016-12-23 | A kind of method of lateritic nickel ore acidleach silicon slag production diatomite |
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| CN106809843A CN106809843A (en) | 2017-06-09 |
| CN106809843B true CN106809843B (en) | 2019-04-05 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326821A (en) * | 2001-07-12 | 2001-12-19 | 柳云珍 | Process for treating silicon slag |
| CN103509955A (en) * | 2013-07-17 | 2014-01-15 | 中信大锰矿业有限责任公司 | Two ore combined process for treatment of laterite nickel ore and pyrolusite |
| CN104630464A (en) * | 2014-12-31 | 2015-05-20 | 金川集团股份有限公司 | Method for extracting nickel and cobalt from laterite-nickel ores by atmospheric-pressure acid leaching |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110116996A1 (en) * | 2009-11-19 | 2011-05-19 | Sang-Bae Kim | Process for non-heating leaching nickel and magnesium from laterite using mechano-chemical effect |
-
2016
- 2016-12-23 CN CN201611205026.5A patent/CN106809843B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326821A (en) * | 2001-07-12 | 2001-12-19 | 柳云珍 | Process for treating silicon slag |
| CN103509955A (en) * | 2013-07-17 | 2014-01-15 | 中信大锰矿业有限责任公司 | Two ore combined process for treatment of laterite nickel ore and pyrolusite |
| CN104630464A (en) * | 2014-12-31 | 2015-05-20 | 金川集团股份有限公司 | Method for extracting nickel and cobalt from laterite-nickel ores by atmospheric-pressure acid leaching |
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