CN109368673A - The method for preparing aluminium hydroxide using corundum slag and chlorination spent acid - Google Patents
The method for preparing aluminium hydroxide using corundum slag and chlorination spent acid Download PDFInfo
- Publication number
- CN109368673A CN109368673A CN201811384116.4A CN201811384116A CN109368673A CN 109368673 A CN109368673 A CN 109368673A CN 201811384116 A CN201811384116 A CN 201811384116A CN 109368673 A CN109368673 A CN 109368673A
- Authority
- CN
- China
- Prior art keywords
- spent acid
- aluminium hydroxide
- corundum slag
- chlorination
- chlorination spent
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
- C01F7/0693—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process from waste-like raw materials, e.g. fly ash or Bayer calcination dust
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Processing Of Solid Wastes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention belongs to chemical metallurgies, and in particular to the method for preparing aluminium hydroxide using corundum slag and chlorination spent acid.Technical problem to be solved by the invention is to provide the methods for preparing aluminium hydroxide using corundum slag and chlorination spent acid, comprising the following steps: a, roasts corundum slag and sodium agent, leaches after roasting, separation of solid and liquid obtains liquid；B, it cleans to liquid obtained by step a, separation of solid and liquid obtains liquid；C, liquid obtained by step b is mixed with chlorination spent acid to mixed system pH and is reacted for 6~10, is separated by solid-liquid separation, washing, drying solid are to get aluminium hydroxide.Two by-products are become the useful raw material of industry and are prepared for aluminium hydroxide by the method for the present invention, while this method has many advantages, such as easy to operate, at low cost, resource rational utilization.
Description
Technical field
The invention belongs to chemical metallurgies, and in particular to the method for preparing aluminium hydroxide using corundum slag and chlorination spent acid.
Background technique
Aluminium hydroxide is a kind of highly important fine inorganic chemicals product, in the production such as filler, papermaking, combustion adjuvant
There is wide application.In addition aluminium hydroxide has both sexes, dissolves quickly in strong acid and strong base.It therefore is numerous species aluminium salt
Important source material.Corundum slag is raw material cheap and easy to get, wherein the aluminium oxide containing 50-60%, by its be made sodium metaaluminate at
This is significantly lower than bauxite, and chlorination spent acid is that the tail gas that chlorination generates obtains 30% or so crude salt acid using multi-stage spray, by
In exhaust gas component complexity, the hydrochloric acid impurity content of generation is very high, and hardly possible leads to waste and the environment of raw material using difficult difficult discharge
Pollution.
Existing patent has no the similar relevant report that aluminium hydroxide is prepared with both raw materials with document.
Summary of the invention
Aluminium hydroxide is prepared using corundum slag and chlorination spent acid technical problem to be solved by the invention is to provide a kind of
Method.Method includes the following steps:
A, corundum slag and sodium agent are roasted, is leached after roasting, separation of solid and liquid obtains liquid；
B, liquid obtained by step a is filtered, separation of solid and liquid obtains liquid；
C, liquid obtained by step b is mixed with chlorination spent acid to mixed system pH and is reacted for 6~10, is separated by solid-liquid separation,
Washing, drying solid are to get aluminium hydroxide.
Specifically, above-mentioned prepared in the method and step a of aluminium hydroxide using corundum slag and chlorination spent acid, the corundum slag is
By-product in vanadium iron production process.
Specifically, above-mentioned prepared in the method and step a of aluminium hydroxide using corundum slag and chlorination spent acid, the corundum slag particle
Spend 300 mesh of <.
Specifically, above-mentioned prepared in the method and step a of aluminium hydroxide using corundum slag and chlorination spent acid, the sodium agent is
At least one of sodium hydroxide, sodium carbonate or sodium bicarbonate.
Specifically, above-mentioned prepared in the method and step a of aluminium hydroxide using corundum slag and chlorination spent acid, the corundum slag with
The mass ratio of sodium agent is 1 ﹕ 1~1.5.
Specifically, above-mentioned prepared in the method and step a of aluminium hydroxide using corundum slag and chlorination spent acid, the maturing temperature
It is 900~1100 DEG C.
Specifically, above-mentioned prepared in the method and step a of aluminium hydroxide using corundum slag and chlorination spent acid, the calcining time
For 1~3h.
Specifically, above-mentioned prepared in the method and step a of aluminium hydroxide using corundum slag and chlorination spent acid, the leaching is used
5~20% sodium hydroxide solution of mass concentration leaches.
Specifically, above-mentioned prepared in the method and step a of aluminium hydroxide using corundum slag and chlorination spent acid, the extraction temperature
It is 40~80 DEG C.
Specifically, above-mentioned prepared in the method and step a of aluminium hydroxide using corundum slag and chlorination spent acid, extraction time 20
~90min.
Specifically, above-mentioned prepared in the method and step b of aluminium hydroxide using corundum slag and chlorination spent acid, the removal of impurities is used
One of flocculant, resin, active carbon or calcium chloride or a variety of is added.Then 30~60min is stirred.Dosage presses 2%-5%
(pressing quality of alumina) control.
Specifically, above-mentioned prepared in the method and step c of aluminium hydroxide using corundum slag and chlorination spent acid, the chlorination spent acid
For the side product chlorinated tail gas acid spray of titanium white chloride production process, the spent acid that hydrochloric acid mass concentration is 26~32% is obtained, is removed
It is 6~10% that hydrochloric acid mass concentration is diluted to after miscellaneous.The removal of impurities is at least one of addition flocculant, resin or active carbon
Stirring stands, is separated by solid-liquid separation.
The method of the present invention roasts corundum slag, alkali leaching, is cleaned, and realizes the separation of aluminium and other impurity, obtains
Then iron-free sodium aluminate solution controls suitable pH with the chlorination spent acid after removal of impurities and is reacted, hydroxide has been prepared
Aluminium.Two by-products are become the useful raw material of industry and are prepared for aluminium hydroxide by the method for the present invention, while this method has operation
Simply, the advantages that at low cost, resource rational utilization.
Specific embodiment
The method of the present invention mixes at least one of corundum slag and sodium hydroxide, sodium carbonate or sodium bicarbonate, high temperature roasting
It burns, then uses alkaline leaching, one of flocculant, resin, active carbon or calcium chloride or a variety of, mistake are added in leachate
Filter to obtain iron-free sodium aluminate solution；Chlorination spent acid carries out purified treatment by hydrochloric acid subsider, and gelling agent is added and is used for deposited salt
Impurity in acid；Then the suitable pH of chlorized abraum salt acid-mixed conjunction control is added into above-mentioned sodium aluminate solution to be reacted, sinks
Shallow lake filtration washing is dry, obtains aluminum hydroxide product.Hydrogen is prepared using corundum slag and chlorination spent acid the present invention provides a kind of
The method of aluminium oxide, comprising the following steps:
(1) corundum slag is subjected to ball milling, 300 mesh of partial size <；Ball milling powder and sodium hydroxide, sodium carbonate or sodium bicarbonate
One of or a variety of mixing, dosage 1 ﹕ 1~1.5 in mass ratio control；Mixing is in 900~1100 DEG C of 1~3h of roasting temperature；
20~90min of mixing is leached under 40~80 DEG C of stirrings using the sodium hydroxide solution of 5~20wt%, and filtrate is obtained by filtration；
(2) addition flocculant, resin, active carbon or calcium chloride are one or more in filtrate, and additional amount accounts for aluminum oxide
The 2~5% of amount are desorbed, are cleaned and are decolourized, and stir 30~60min, it is spare that sodium metaaluminate filtrate is obtained by filtration；
(3) chlorinated exhaust sprays waste hydrochloric acid, obtains the spent acid that hydrochloric acid mass concentration is 26~32%, and flocculant, tree is added
One or more, 1~3h of stirring of rouge or active carbon, stands 4~6h, filtering takes filtrate that deionized water is added to be diluted to 6~10%
It is spare；The low adjusting for being conducive to step (4) pH of concentration in this step, such as excessive concentration, pH reduction is faster, precipitates faster, it is difficult to
Control；And concentration is low, relative solvent is more, the solubility of impurity element be it is constant, entire solution system dissolved impurity is just more
It is more, that is, the concentration of foreign pigment element keeps lower concentration in whole system, is finally difficult to be precipitated, the hydrogen-oxygen of preparation
It is purer to change aluminium；
(4) it takes sodium metaaluminate filtrate that chlorination spent acid is added to mix to pH control 6~10, filtration washing is dry, obtains hydrogen
Alumina product.
The following table 1 is respectively the ingredient of embodiment 1-2 corundum slag:
Table 1
| Sample ID/% | MgO | TFe | SiO2 | V2O5 | Al2O3 | Cr2O3 | CaO |
| Corundum slag -1 | 8.55 | 0.62 | 0.45 | 1.81 | 58.79 | 0.03 | 22.42 |
| Corundum slag -2 | 9.20 | 0.88 | 0.26 | 1.77 | 58.90 | 0.02 | 22.55 |
Embodiment 1
Corundum slag is subjected to ball milling, 300 mesh of partial size <；Ball milling powder and sodium hydroxide, sodium carbonate, sodium bicarbonate are mixed
It closes, dosage is 1 ﹕, 0.2 ﹕, 0.5 ﹕ 0.5 control in mass ratio；Mixing is in 1100 DEG C of roasting temperature 3h；Use 10% hydroxide
Sodium solution leaches mixing 40min at 60 DEG C and under stirring, and filtrate is obtained by filtration；1.0% calcium chloride is added in filtrate, stirs
It is spare that sodium metaaluminate filtrate is obtained by filtration in 30min；Chlorinated exhaust sprays waste hydrochloric acid, and flocculant is added, and stirs 2h, stands 4h, mistake
Filter, takes filtrate that deionized water is added to be diluted to 10% spare；It takes sodium metaaluminate filtrate that chlorination spent acid is added and mixes to pH control to exist
8.0, filtration washing is dry, obtains aluminum hydroxide product.
Wherein, the recovery rate of aluminium oxide reaches 78% in corundum slag, and alumina composition reaches 64% in aluminum hydroxide product,
Impurity content is low, meets the requirement of some industries.
Embodiment 2
Corundum slag is subjected to ball milling, 300 mesh of partial size <；Ball milling powder and sodium hydroxide, sodium carbonate, sodium bicarbonate are mixed
It closes, dosage is 1 ﹕, 0.2 ﹕, 0.5 ﹕ 0.4 control in mass ratio；Mixing is carrying out 1000 DEG C of roasting temperature 2h；Use 5% hydrogen-oxygen
Change sodium solution and leach mixing 50min at 60 DEG C and under stirring, filtrate is obtained by filtration；Be added in filtrate 0.5% flocculant,
2.0% cation exchange resin and 1.0% calcium chloride stir 60min, it is spare that sodium metaaluminate filtrate are obtained by filtration；Chlorinated exhaust
Waste hydrochloric acid acid is sprayed, flocculant and ion exchange resin is added, stirs 3h, stands 5h, filtering takes filtrate that deionized water is added to dilute
It is spare to 10%；It takes sodium metaaluminate filtrate that chlorination spent acid is added, takes sodium metaaluminate filtrate that chlorination spent acid is added and mix to pH control
7.0, filtration washing is dry, obtains aluminum hydroxide product.
Wherein, the recovery rate of aluminium oxide reaches 81% in corundum slag, and alumina composition reaches 65% in aluminum hydroxide product,
Impurity content is low, meets the requirement of some industries.
Claims (10)
1. the method for preparing aluminium hydroxide using corundum slag and chlorination spent acid, it is characterised in that: the following steps are included:
A, corundum slag and sodium agent are roasted, is leached after roasting, separation of solid and liquid obtains liquid；
B, it cleans to liquid obtained by step a, separation of solid and liquid obtains liquid；
C, liquid obtained by step b is mixed with chlorination spent acid to mixed system pH and is reacted for 6~10, is separated by solid-liquid separation, washing,
Drying solid is to get aluminium hydroxide.
2. the method according to claim 1 for preparing aluminium hydroxide using corundum slag and chlorination spent acid, it is characterised in that: step
In rapid a, 300 mesh of corundum slag granularity <.
3. the method according to claim 1 for preparing aluminium hydroxide using corundum slag and chlorination spent acid, it is characterised in that: step
In rapid a, the sodium agent is at least one of sodium hydroxide, sodium carbonate or sodium bicarbonate.
4. the method according to claim 1 or 3 for preparing aluminium hydroxide using corundum slag and chlorination spent acid, feature exist
In: in step a, the mass ratio of the corundum slag and sodium agent is 1 ﹕ 1~1.5.
5. the method according to claim 1 for preparing aluminium hydroxide using corundum slag and chlorination spent acid, it is characterised in that: step
In rapid a, the maturing temperature is 900~1100 DEG C；Calcining time is 1~3h.
6. the method according to claim 1 for preparing aluminium hydroxide using corundum slag and chlorination spent acid, it is characterised in that: step
In rapid a, described leach is leached using 5~20% sodium hydroxide solution of mass concentration.
7. the method according to claim 1 or 6 for preparing aluminium hydroxide using corundum slag and chlorination spent acid, feature exist
In: in step a, the extraction temperature is 40~80 DEG C；Extraction time is 20~90min.
8. the method according to claim 1 for preparing aluminium hydroxide using corundum slag and chlorination spent acid, it is characterised in that: step
In rapid b, the removal of impurities is realized using at least one of flocculant, resin, active carbon or calcium chloride is added.
9. the method according to claim 8 for preparing aluminium hydroxide using corundum slag and chlorination spent acid, it is characterised in that: step
In rapid b, it is 2~5% that at least one of flocculant, resin, active carbon or calcium chloride additional amount, which is added, in the removal of impurities.
10. the method according to claim 1 for preparing aluminium hydroxide using corundum slag and chlorination spent acid, it is characterised in that:
In step c, the chlorination spent acid is the side product chlorinated tail gas acid spray of titanium white chloride production process, obtains hydrochloric acid mass concentration
For 26~32% spent acid, it is 6~10% that hydrochloric acid mass concentration is diluted to after removal of impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384116.4A CN109368673A (en) | 2018-11-20 | 2018-11-20 | The method for preparing aluminium hydroxide using corundum slag and chlorination spent acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384116.4A CN109368673A (en) | 2018-11-20 | 2018-11-20 | The method for preparing aluminium hydroxide using corundum slag and chlorination spent acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109368673A true CN109368673A (en) | 2019-02-22 |
Family
ID=65376612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811384116.4A Pending CN109368673A (en) | 2018-11-20 | 2018-11-20 | The method for preparing aluminium hydroxide using corundum slag and chlorination spent acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109368673A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110606471A (en) * | 2019-09-18 | 2019-12-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for comprehensively utilizing low-temperature chlorination tail gas |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105129828A (en) * | 2015-07-17 | 2015-12-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Method of preparing sodium metaaluminate from corundum slag |
| CN107814401A (en) * | 2017-12-08 | 2018-03-20 | 西安科技大学 | The method that aluminum oxide is extracted from flyash |
-
2018
- 2018-11-20 CN CN201811384116.4A patent/CN109368673A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105129828A (en) * | 2015-07-17 | 2015-12-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Method of preparing sodium metaaluminate from corundum slag |
| CN107814401A (en) * | 2017-12-08 | 2018-03-20 | 西安科技大学 | The method that aluminum oxide is extracted from flyash |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110606471A (en) * | 2019-09-18 | 2019-12-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for comprehensively utilizing low-temperature chlorination tail gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105883911B (en) | Fused salt chlorimation slag recycling processing method | |
| CN105367428B (en) | A kind of synthesis technique of 2,4- dinitros -6- chloroanilines | |
| CN106480313A (en) | Method for recovering platinum from indissolvable silicon-aluminum-based platinum-containing waste catalyst | |
| CN103214013B (en) | A kind of preparation method of high purity alumina powder | |
| CN113582224B (en) | Resource utilization method for titanium white waste acid leaching fused salt chlorination slag | |
| CN108529658B (en) | Method for recovering aluminum hydroxide from aluminum ash | |
| CN106044799A (en) | Method for comprehensively utilizing titanium chloride residues and filter liquid thereof in chlorination-process technologies for titanium dioxide powder | |
| CN107022681A (en) | A kind of comprehensive recovering process of aluminium scrap silicon middle rare earth, aluminium and silicon | |
| CN108911237A (en) | The method of sodium vanadium extracting waste water resource utilization | |
| CN106044784B (en) | A kind of method using flyash production high-purity silicon dioxide | |
| CN109368673A (en) | The method for preparing aluminium hydroxide using corundum slag and chlorination spent acid | |
| CN109797283A (en) | A kind of hydrochloric acid leaching method of siliceous hydroxide nickel cobalt | |
| CN103738972A (en) | Method for preparing silicon micropowder by using pulverized fuel ash aluminum extraction residues | |
| CN110079664A (en) | The method of Tungsten smelting waste residue arsenic removal | |
| WO2019019844A1 (en) | Process for producing 4a zeolite by treating bayer process red mud with andradite one-step alkali heat method | |
| CN105110378A (en) | Method used for preparing ferrate | |
| CN113800549A (en) | Method for extracting barium chloride from precipitated barium sulfate waste residue | |
| CN107253776A (en) | Washery slag acid waste water technique of zero discharge in a kind of Titanium Dioxide Produced by Chloride Procedure production process | |
| CN105668597B (en) | The method of flyash soda acid combined extracting aluminium base product and silica-based products | |
| CN106379923B (en) | A kind of technique of waste residue production highly pure active magnesia using smelting magnesium | |
| CN106892455B (en) | The green clean method for preparing of vanadium compounds | |
| CN112279284B (en) | Method for comprehensively utilizing high-sulfur bauxite and Bayer process red mud | |
| CN104556168A (en) | Method of activated leaching alumina in fly ash | |
| CN105000537B (en) | A kind of method for separating selenium in alkaline leaching liquid | |
| CN103991851A (en) | New process for green and cyclic production of hydrazine hydrate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190222 |
|
| RJ01 | Rejection of invention patent application after publication |